Fix async test method naming: rename Sync to Async

Co-authored-by: adamhathcock <527620+adamhathcock@users.noreply.github.com>

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "csharpier": {
-      "version": "1.2.1",
+      "version": "1.2.5",
       "commands": [
         "csharpier"
       ],

.editorconfig

@@ -368,6 +368,9 @@ dotnet_diagnostic.NX0001.severity = error
 dotnet_diagnostic.NX0002.severity = silent
 dotnet_diagnostic.NX0003.severity = silent
 
+dotnet_diagnostic.VSTHRD110.severity = error
+dotnet_diagnostic.VSTHRD107.severity = error
+
 ##########################################
 # Styles
 ##########################################

.github/COPILOT_AGENT_README.md

@@ -1,15 +0,0 @@
-# Copilot Coding Agent Configuration
-
-This repository includes a minimal opt-in configuration and CI workflow to allow the GitHub Copilot coding agent to open and validate PRs.
-
-- .copilot-agent.yml: opt-in config for automated agents
-- .github/agents/copilot-agent.yml: detailed agent policy configuration
-- .github/workflows/dotnetcore.yml: CI runs on PRs touching the solution, source, or tests to validate changes
-- AGENTS.md: general instructions for Copilot coding agent with project-specific guidelines
-
-Maintainers can adjust the allowed paths or disable the agent by editing or removing .copilot-agent.yml.
-
-Notes:
-- The agent can create, modify, and delete files within the allowed paths (src, tests, README.md, AGENTS.md)
-- All changes require review before merge
-- If build/test paths are different, update the workflow accordingly; this workflow targets SharpCompress.sln and the SharpCompress.Test test project.

.github/prompts/plan-async.prompt.md

@@ -0,0 +1,25 @@
+# Plan: Implement Missing Async Functionality in SharpCompress
+
+SharpCompress has async support for low-level stream operations and Reader/Writer APIs, but critical entry points (Archive.Open, factory methods, initialization) remain synchronous. This plan adds async overloads for all user-facing I/O operations and fixes existing async bugs, enabling full end-to-end async workflows.
+
+## Steps
+
+1. **Add async factory methods** to [ArchiveFactory.cs](src/SharpCompress/Factories/ArchiveFactory.cs), [ReaderFactory.cs](src/SharpCompress/Factories/ReaderFactory.cs), and [WriterFactory.cs](src/SharpCompress/Factories/WriterFactory.cs) with `OpenAsync` and `CreateAsync` overloads accepting `CancellationToken`
+
+2. **Implement async Open methods** on concrete archive types ([ZipArchive.cs](src/SharpCompress/Archives/Zip/ZipArchive.cs), [TarArchive.cs](src/SharpCompress/Archives/Tar/TarArchive.cs), [RarArchive.cs](src/SharpCompress/Archives/Rar/RarArchive.cs), [GZipArchive.cs](src/SharpCompress/Archives/GZip/GZipArchive.cs), [SevenZipArchive.cs](src/SharpCompress/Archives/SevenZip/SevenZipArchive.cs)) and reader types ([ZipReader.cs](src/SharpCompress/Readers/Zip/ZipReader.cs), [TarReader.cs](src/SharpCompress/Readers/Tar/TarReader.cs), etc.)
+
+3. **Convert archive initialization logic to async** including header reading, volume loading, and format signature detection across archive constructors and internal initialization methods
+
+4. **Fix LZMA decoder async bugs** in [LzmaStream.cs](src/SharpCompress/Compressors/LZMA/LzmaStream.cs), [Decoder.cs](src/SharpCompress/Compressors/LZMA/Decoder.cs), and [OutWindow.cs](src/SharpCompress/Compressors/LZMA/OutWindow.cs) to enable true async 7Zip support and remove `NonDisposingStream` workaround
+
+5. **Complete Rar async implementation** by converting `UnpackV2017` methods to async in [UnpackV2017.cs](src/SharpCompress/Compressors/Rar/UnpackV2017.cs) and updating Rar20 decompression
+
+6. **Add comprehensive async tests** covering all new async entry points, cancellation scenarios, and concurrent operations across all archive formats in test files
+
+## Further Considerations
+
+1. **Breaking changes** - Should new async methods be added alongside existing sync methods (non-breaking), or should sync methods eventually be deprecated? Recommend additive approach for backward compatibility.
+
+2. **Performance impact** - Header parsing for formats like Zip/Tar is often small; consider whether truly async parsing adds value vs sync parsing wrapped in Task, or make it conditional based on stream type (network vs file).
+
+3. **7Zip complexity** - The LZMA async bug fix (Step 4) may be challenging due to state management in the decoder; consider whether to scope it separately or implement a simpler workaround that maintains correctness.

.github/prompts/plan-for-next.prompt.md

@@ -0,0 +1,123 @@
+# Plan: Modernize SharpCompress Public API
+
+Based on comprehensive analysis, the API has several inconsistencies around factory patterns, async support, format capabilities, and options classes. Most improvements can be done incrementally without breaking changes.
+
+## Steps
+
+1. **Standardize factory patterns** by deprecating format-specific static `Open` methods in [Archives/Zip/ZipArchive.cs](src/SharpCompress/Archives/Zip/ZipArchive.cs), [Archives/Tar/TarArchive.cs](src/SharpCompress/Archives/Tar/TarArchive.cs), etc. in favor of centralized [Factories/ArchiveFactory.cs](src/SharpCompress/Factories/ArchiveFactory.cs)
+
+2. **Complete async implementation** in [Writers/Zip/ZipWriter.cs](src/SharpCompress/Writers/Zip/ZipWriter.cs) and other writers that currently use sync-over-async, implementing true async I/O throughout the writer hierarchy
+
+3. **Unify options classes** by making [Common/ExtractionOptions.cs](src/SharpCompress/Common/ExtractionOptions.cs) inherit from `OptionsBase` and adding progress reporting to extraction methods consistently
+
+4. **Clarify GZip semantics** in [Archives/GZip/GZipArchive.cs](src/SharpCompress/Archives/GZip/GZipArchive.cs) by adding XML documentation explaining single-entry limitation and relationship to GZip compression used in Tar.gz
+
+## Further Considerations
+
+1. **Breaking changes roadmap** - Should we plan a major version (2.0) to remove deprecated factory methods, clean up `ArchiveType` enum (remove Arc/Arj or add full support), and consolidate naming patterns?
+
+2. **Progress reporting consistency** - Should `IProgress<ArchiveExtractionProgress<IEntry>>` be added to all extraction extension methods or consolidated into options classes?
+
+## Detailed Analysis
+
+### Factory Pattern Issues
+
+Three different factory patterns exist with overlapping functionality:
+
+1. **Static Factories**: ArchiveFactory, ReaderFactory, WriterFactory
+2. **Instance Factories**: IArchiveFactory, IReaderFactory, IWriterFactory
+3. **Format-specific static methods**: Each archive class has static `Open` methods
+
+**Example confusion:**
+```csharp
+// Three ways to open a Zip archive - which is recommended?
+var archive1 = ArchiveFactory.Open("file.zip");
+var archive2 = ZipArchive.Open("file.zip");
+var archive3 = ArchiveFactory.AutoFactory.Open(fileInfo, options);
+```
+
+### Async Support Gaps
+
+Base `IWriter` interface has async methods, but writer implementations provide minimal async support. Most writers just call synchronous methods:
+
+```csharp
+public virtual async Task WriteAsync(...)
+{
+    // Default implementation calls synchronous version
+    Write(filename, source, modificationTime);
+    await Task.CompletedTask.ConfigureAwait(false);
+}
+```
+
+Real async implementations only in:
+- `TarWriter` - Proper async implementation
+- Most other writers use sync-over-async
+
+### GZip Archive Special Case
+
+GZip is treated as both a compression format and an archive format, but only supports single-entry archives:
+
+```csharp
+protected override GZipArchiveEntry CreateEntryInternal(...)
+{
+    if (Entries.Any())
+    {
+        throw new InvalidFormatException("Only one entry is allowed in a GZip Archive");
+    }
+    // ...
+}
+```
+
+### Options Class Hierarchy
+
+```
+OptionsBase (LeaveStreamOpen, ArchiveEncoding)
+  ├─ ReaderOptions (LookForHeader, Password, DisableCheckIncomplete, BufferSize, ExtensionHint, Progress)
+  ├─ WriterOptions (CompressionType, CompressionLevel, Progress)
+  │   ├─ ZipWriterOptions (ArchiveComment, UseZip64)
+  │   ├─ TarWriterOptions (FinalizeArchiveOnClose, HeaderFormat)
+  │   └─ GZipWriterOptions (no additional properties)
+  └─ ExtractionOptions (standalone - Overwrite, ExtractFullPath, PreserveFileTime, PreserveAttributes)
+```
+
+**Issues:**
+- `ExtractionOptions` doesn't inherit from `OptionsBase` - no encoding support during extraction
+- Progress reporting inconsistency between readers and extraction
+- Obsolete properties (`ChecksumIsValid`, `Version`) with unclear migration path
+
+### Implementation Priorities
+
+**High Priority (Non-Breaking):**
+1. Add API usage guide (Archive vs Reader, factory recommendations, async best practices)
+2. Fix progress reporting consistency
+3. Complete async implementation in writers
+
+**Medium Priority (Next Major Version):**
+1. Unify factory pattern - deprecate format-specific static `Open` methods
+2. Clean up options classes - make `ExtractionOptions` inherit from `OptionsBase`
+3. Clarify archive types - remove Arc/Arj from `ArchiveType` enum or add full support
+4. Standardize naming across archive types
+
+**Low Priority:**
+1. Add BZip2 archive support similar to GZipArchive
+2. Complete obsolete property cleanup with migration guide
+
+### Backward Compatibility Strategy
+
+**Safe (Non-Breaking) Changes:**
+- Add new methods to interfaces (use default implementations)
+- Add new options properties (with defaults)
+- Add new factory methods
+- Improve async implementations
+- Add progress reporting support
+
+**Breaking Changes to Avoid:**
+- ❌ Removing format-specific `Open` methods (deprecate instead)
+- ❌ Changing `LeaveStreamOpen` default (currently `true`)
+- ❌ Removing obsolete properties before major version bump
+- ❌ Changing return types or signatures of existing methods
+
+**Deprecation Pattern:**
+- Use `[Obsolete]` for one major version
+- Use `[EditorBrowsable(EditorBrowsableState.Never)]` in next major version
+- Remove in following major version

.github/workflows/NUGET_RELEASE.md

@@ -0,0 +1,155 @@
+# NuGet Release Workflow
+
+This document describes the automated NuGet release workflow for SharpCompress.
+
+## Overview
+
+The `nuget-release.yml` workflow automatically builds, tests, and publishes SharpCompress packages to NuGet.org when:
+- Changes are pushed to the `master` or `release` branch
+- A version tag (format: `MAJOR.MINOR.PATCH`) is pushed
+
+The workflow runs on both Windows and Ubuntu, but only the Windows build publishes to NuGet.
+
+## How It Works
+
+### Version Determination
+
+The workflow automatically determines the version based on whether the commit is tagged using C# code in the build project:
+
+1. **Tagged Release (Stable)**:
+   - If the current commit has a version tag (e.g., `0.42.1`)
+   - Uses the tag as the version number
+   - Published as a stable release
+
+2. **Untagged Release (Prerelease)**:
+   - If the current commit is NOT tagged
+   - Creates a prerelease version based on the next minor version
+   - Format: `{NEXT_MINOR_VERSION}-beta.{COMMIT_COUNT}`
+   - Example: `0.43.0-beta.123` (if last tag is 0.42.x)
+   - Published as a prerelease to NuGet.org (Windows build only)
+
+### Workflow Steps
+
+The workflow runs on a matrix of operating systems (Windows and Ubuntu):
+
+1. **Checkout**: Fetches the repository with full history for version detection
+2. **Setup .NET**: Installs .NET 10.0
+3. **Determine Version**: Runs `determine-version` build target to check for tags and determine version
+4. **Update Version**: Runs `update-version` build target to update the version in the project file
+5. **Build and Test**: Runs the full build and test suite on both platforms
+6. **Upload Artifacts**: Uploads the generated `.nupkg` files as workflow artifacts (separate for each OS)
+7. **Push to NuGet**: (Windows only) Runs `push-to-nuget` build target to publish the package to NuGet.org using the API key
+
+All version detection, file updates, and publishing logic is implemented in C# in the `build/Program.cs` file using build targets.
+
+## Setup Requirements
+
+### 1. NuGet API Key Secret
+
+The workflow requires a `NUGET_API_KEY` secret to be configured in the repository settings:
+
+1. Go to https://www.nuget.org/account/apikeys
+2. Create a new API key with "Push" permission for the SharpCompress package
+3. In GitHub, go to: **Settings** → **Secrets and variables** → **Actions**
+4. Create a new secret named `NUGET_API_KEY` with the API key value
+
+### 2. Branch Protection (Recommended)
+
+Consider enabling branch protection rules for the `release` branch to ensure:
+- Code reviews are required before merging
+- Status checks pass before merging
+- Only authorized users can push to the branch
+
+## Usage
+
+### Creating a Stable Release
+
+There are two ways to trigger a stable release:
+
+**Method 1: Push tag to trigger workflow**
+1. Ensure all changes are committed on the `master` or `release` branch
+2. Create and push a version tag:
+   ```bash
+   git checkout master  # or release
+   git tag 0.43.0
+   git push origin 0.43.0
+   ```
+3. The workflow will automatically trigger, build, test, and publish `SharpCompress 0.43.0` to NuGet.org (Windows build)
+
+**Method 2: Tag after pushing to branch**
+1. Ensure all changes are merged and pushed to the `master` or `release` branch
+2. Create and push a version tag on the already-pushed commit:
+   ```bash
+   git checkout master  # or release
+   git tag 0.43.0
+   git push origin 0.43.0
+   ```
+3. The workflow will automatically trigger, build, test, and publish `SharpCompress 0.43.0` to NuGet.org (Windows build)
+
+### Creating a Prerelease
+
+1. Push changes to the `master` or `release` branch without tagging:
+   ```bash
+   git checkout master  # or release
+   git push origin master  # or release
+   ```
+2. The workflow will automatically:
+   - Build and test the project on both Windows and Ubuntu
+   - Publish a prerelease version like `0.43.0-beta.456` to NuGet.org (Windows build)
+
+## Troubleshooting
+
+### Workflow Fails to Push to NuGet
+
+- **Check the API Key**: Ensure `NUGET_API_KEY` is set correctly in repository secrets
+- **Check API Key Permissions**: Verify the API key has "Push" permission for SharpCompress
+- **Check API Key Expiration**: NuGet API keys may expire; create a new one if needed
+
+### Version Conflict
+
+If you see "Package already exists" errors:
+- The workflow uses `--skip-duplicate` flag to handle this gracefully
+- If you need to republish the same version, delete it from NuGet.org first (if allowed)
+
+### Build or Test Failures
+
+- The workflow will not push to NuGet if build or tests fail
+- Check the workflow logs in GitHub Actions for details
+- Fix the issues and push again
+
+## Manual Package Creation
+
+If you need to create a package manually without publishing:
+
+```bash
+dotnet run --project build/build.csproj -- publish
+```
+
+The package will be created in the `artifacts/` directory.
+
+## Build Targets
+
+The workflow uses the following C# build targets defined in `build/Program.cs`:
+
+- **determine-version**: Detects version from git tags and outputs VERSION and PRERELEASE variables
+- **update-version**: Updates VersionPrefix, AssemblyVersion, and FileVersion in the project file
+- **push-to-nuget**: Pushes the generated NuGet packages to NuGet.org (requires NUGET_API_KEY)
+
+These targets can be run manually for testing:
+
+```bash
+# Determine the version
+dotnet run --project build/build.csproj -- determine-version
+
+# Update version in project file
+VERSION=0.43.0 dotnet run --project build/build.csproj -- update-version
+
+# Push to NuGet (requires NUGET_API_KEY environment variable)
+NUGET_API_KEY=your-key dotnet run --project build/build.csproj -- push-to-nuget
+```
+
+## Related Files
+
+- `.github/workflows/nuget-release.yml` - The workflow definition
+- `build/Program.cs` - Build script with version detection and publishing logic
+- `src/SharpCompress/SharpCompress.csproj` - Project file with version information

.github/workflows/TESTING.md

@@ -0,0 +1,120 @@
+# Testing Guide for NuGet Release Workflow
+
+This document describes how to test the NuGet release workflow.
+
+## Testing Strategy
+
+Since this workflow publishes to NuGet.org and requires repository secrets, testing should be done carefully. The workflow runs on both Windows and Ubuntu, but only the Windows build publishes to NuGet.
+
+## Pre-Testing Checklist
+
+- [x] Workflow YAML syntax validated
+- [x] Version determination logic tested locally
+- [x] Version update logic tested locally
+- [x] Build script works (`dotnet run --project build/build.csproj`)
+
+## Manual Testing Steps
+
+### 1. Test Prerelease Publishing (Recommended First Test)
+
+This tests the workflow on untagged commits to the master or release branch.
+
+**Steps:**
+1. Ensure `NUGET_API_KEY` secret is configured in repository settings
+2. Create a test commit on the `master` or `release` branch (e.g., update a comment or README)
+3. Push to the `master` or `release` branch
+4. Monitor the GitHub Actions workflow at: https://github.com/adamhathcock/sharpcompress/actions
+5. Verify:
+   - Workflow triggers and runs successfully on both Windows and Ubuntu
+   - Version is determined correctly (e.g., `0.43.0-beta.XXX` if last tag is 0.42.x)
+   - Build and tests pass on both platforms
+   - Package artifacts are uploaded for both platforms
+   - Package is pushed to NuGet.org as prerelease (Windows build only)
+
+**Expected Outcome:**
+- A new prerelease package appears on NuGet.org: https://www.nuget.org/packages/SharpCompress/
+- Package version follows pattern: `{NEXT_MINOR_VERSION}-beta.{COMMIT_COUNT}`
+
+### 2. Test Tagged Release Publishing
+
+This tests the workflow when a version tag is pushed.
+
+**Steps:**
+1. Prepare the `master` or `release` branch with all desired changes
+2. Create a version tag (must be a pure semantic version like `MAJOR.MINOR.PATCH`):
+   ```bash
+   git checkout master  # or release
+   git tag 0.42.2
+   git push origin 0.42.2
+   ```
+3. Monitor the GitHub Actions workflow
+4. Verify:
+   - Workflow triggers and runs successfully on both Windows and Ubuntu
+   - Version is determined as the tag (e.g., `0.42.2`)
+   - Build and tests pass on both platforms
+   - Package artifacts are uploaded for both platforms
+   - Package is pushed to NuGet.org as stable release (Windows build only)
+
+**Expected Outcome:**
+- A new stable release package appears on NuGet.org
+- Package version matches the tag
+
+### 3. Test Duplicate Package Handling
+
+This tests the `--skip-duplicate` flag behavior.
+
+**Steps:**
+1. Push to the `release` branch without making changes
+2. Monitor the workflow
+3. Verify:
+   - Workflow runs but NuGet push is skipped with "duplicate" message
+   - No errors occur
+
+### 4. Test Build Failure Handling
+
+This tests that failed builds don't publish packages.
+
+**Steps:**
+1. Introduce a breaking change in a test or code
+2. Push to the `release` branch
+3. Verify:
+   - Workflow runs and detects the failure
+   - Build or test step fails
+   - NuGet push step is skipped
+   - No package is published
+
+## Verification
+
+After each test, verify:
+
+1. **GitHub Actions Logs**: Check the workflow logs for any errors or warnings
+2. **NuGet.org**: Verify the package appears with correct version and metadata
+3. **Artifacts**: Download and inspect the uploaded artifacts
+
+## Rollback/Cleanup
+
+If testing produces unwanted packages:
+
+1. **Prerelease packages**: Can be unlisted on NuGet.org (Settings → Unlist)
+2. **Stable packages**: Cannot be deleted, only unlisted (use test versions)
+3. **Tags**: Can be deleted with:
+   ```bash
+   git tag -d 0.42.2
+   git push origin :refs/tags/0.42.2
+   ```
+
+## Known Limitations
+
+- NuGet.org does not allow re-uploading the same version
+- Deleted packages on NuGet.org reserve the version number
+- The workflow requires the `NUGET_API_KEY` secret to be set
+
+## Success Criteria
+
+The workflow is considered successful if:
+
+- ✅ Prerelease versions are published correctly with beta suffix
+- ✅ Tagged versions are published as stable releases
+- ✅ Build and test failures prevent publishing
+- ✅ Duplicate packages are handled gracefully
+- ✅ Workflow logs are clear and informative

.github/workflows/dotnetcore.yml

@@ -1,25 +0,0 @@
-name: SharpCompress
-on:
-  push:
-    branches:
-      - 'master'
-  pull_request:
-    types: [ opened, synchronize, reopened, ready_for_review ]
-
-jobs:
-  build:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [windows-latest, ubuntu-latest]
-
-    steps:
-    - uses: actions/checkout@v6
-    - uses: actions/setup-dotnet@v5
-      with:
-        dotnet-version: 10.0.x
-    - run: dotnet run --project build/build.csproj
-    - uses: actions/upload-artifact@v5
-      with:
-        name: ${{ matrix.os }}-sharpcompress.nupkg
-        path: artifacts/*

.github/workflows/nuget-release.yml

@@ -0,0 +1,61 @@
+name: NuGet Release
+
+on:
+  push:
+    branches:
+      - 'master'
+      - 'release'
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+'
+  pull_request:
+    branches:
+      - 'master'
+      - 'release'
+
+permissions:
+  contents: read
+
+jobs:
+  build-and-publish:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-latest, ubuntu-latest]
+    
+    steps:
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: 0  # Fetch all history for versioning
+    
+    - uses: actions/setup-dotnet@v5
+      with:
+        dotnet-version: 10.0.x
+    
+    # Determine version using C# build target
+    - name: Determine Version
+      id: version
+      run: dotnet run --project build/build.csproj -- determine-version
+    
+    # Update version in project file using C# build target
+    - name: Update Version in Project
+      run: dotnet run --project build/build.csproj -- update-version
+      env:
+        VERSION: ${{ steps.version.outputs.version }}
+    
+    # Build and test
+    - name: Build and Test
+      run: dotnet run --project build/build.csproj
+    
+    # Upload artifacts for verification
+    - name: Upload NuGet Package
+      uses: actions/upload-artifact@v6
+      with:
+        name: ${{ matrix.os }}-nuget-package
+        path: artifacts/*.nupkg
+    
+    # Push to NuGet.org using C# build target (Windows only, not on PRs)
+    - name: Push to NuGet
+      if: success() && matrix.os == 'windows-latest' && github.event_name != 'pull_request'
+      run: dotnet run --project build/build.csproj -- push-to-nuget
+      env:
+        NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }}

.gitignore

@@ -16,6 +16,7 @@ tests/TestArchives/*/Scratch2
 .vs
 tools
 .idea/
+artifacts/
 
 .DS_Store
 *.snupkg

AGENTS.md

@@ -28,14 +28,38 @@ SharpCompress is a pure C# compression library supporting multiple archive forma
 
 ## Code Formatting
 
+**Copilot agents: You MUST run the `format` task after making code changes to ensure consistency.**
+
 - Use CSharpier for code formatting to ensure consistent style across the project
 - CSharpier is configured as a local tool in `.config/dotnet-tools.json`
-- Restore tools with: `dotnet tool restore`
-- Format files from the project root with: `dotnet csharpier .`
-- **Run `dotnet csharpier .` from the project root after making code changes before committing**
-- Configure your IDE to format on save using CSharpier for the best experience
+
+### Commands
+
+1. **Restore tools** (first time only):
+   ```bash
+   dotnet tool restore
+   ```
+
+2. **Check if files are formatted correctly** (doesn't modify files):
+   ```bash
+   dotnet csharpier check .
+   ```
+   - Exit code 0: All files are properly formatted
+   - Exit code 1: Some files need formatting (will show which files and differences)
+
+3. **Format files** (modifies files):
+   ```bash
+   dotnet csharpier format .
+   ```
+   - Formats all files in the project to match CSharpier style
+   - Run from project root directory
+
+4. **Configure your IDE** to format on save using CSharpier for the best experience
+
+### Additional Notes
 - The project also uses `.editorconfig` for editor settings (indentation, encoding, etc.)
 - Let CSharpier handle code style while `.editorconfig` handles editor behavior
+- Always run `dotnet csharpier check .` before committing to verify formatting
 
 ## Project Setup and Structure
 

Directory.Packages.props

@@ -1,21 +1,23 @@
 <Project>
   <ItemGroup>
-    <PackageVersion Include="Bullseye" Version="6.0.0" />
+    <PackageVersion Include="Bullseye" Version="6.1.0" />
     <PackageVersion Include="AwesomeAssertions" Version="9.3.0" />
     <PackageVersion Include="Glob" Version="1.1.9" />
-    <PackageVersion Include="JetBrains.Profiler.SelfApi" Version="2.5.14" />
+    <PackageVersion Include="JetBrains.Profiler.SelfApi" Version="2.5.15" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="10.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageVersion Include="Mono.Posix.NETStandard" Version="1.0.0" />
-    <PackageVersion Include="SimpleExec" Version="12.0.0" />
+    <PackageVersion Include="SimpleExec" Version="13.0.0" />
+    <PackageVersion Include="System.Text.Encoding.CodePages" Version="10.0.0" />
     <PackageVersion Include="System.Buffers" Version="4.6.1" />
     <PackageVersion Include="System.Memory" Version="4.6.3" />
-    <PackageVersion Include="System.Text.Encoding.CodePages" Version="10.0.0" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
-    <PackageVersion Include="ZstdSharp.Port" Version="0.8.6" />
-    <PackageVersion Include="Microsoft.NET.ILLink.Tasks" Version="10.0.0" />
-    <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
-    <PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" />
+    <GlobalPackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
+    <GlobalPackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" />
+    <GlobalPackageReference
+      Include="Microsoft.VisualStudio.Threading.Analyzers"
+      Version="17.14.15"
+    />
   </ItemGroup>
 </Project>

FORMATS.md

@@ -10,7 +10,10 @@
 
 | Archive Format         | Compression Format(s)                             | Compress/Decompress | Archive API     | Reader API | Writer API    |
 | ---------------------- | ------------------------------------------------- | ------------------- | --------------- | ---------- | ------------- |
-| Rar                    | Rar                                               | Decompress (1)      | RarArchive      | RarReader  | N/A           |
+| Ace                    | None                                              | Decompress          | N/A             | AceReader  | N/A           |
+| Arc                    | None, Packed, Squeezed, Crunched                  | Decompress          | N/A             | ArcReader  | N/A           |
+| Arj                    | None                                              | Decompress          | N/A             | ArjReader  | N/A           |
+| Rar                    | Rar                                               | Decompress          | RarArchive      | RarReader  | N/A           |
 | Zip (2)                | None, Shrink, Reduce, Implode, DEFLATE, Deflate64, BZip2, LZMA/LZMA2, PPMd                           | Both                | ZipArchive      | ZipReader  | ZipWriter     | 
 | Tar                    | None                                              | Both                | TarArchive      | TarReader  | TarWriter (3) |
 | Tar.GZip               | DEFLATE                                           | Both                | TarArchive      | TarReader  | TarWriter (3) |
@@ -24,7 +27,7 @@
 1. SOLID Rars are only supported in the RarReader API.
 2. Zip format supports pkware and WinzipAES encryption. However, encrypted LZMA is not supported. Zip64 reading/writing is supported but only with seekable streams as the Zip spec doesn't support Zip64 data in post data descriptors. Deflate64 is only supported for reading. See [Zip Format Notes](#zip-format-notes) for details on multi-volume archives and streaming behavior.
 3. The Tar format requires a file size in the header. If no size is specified to the TarWriter and the stream is not seekable, then an exception will be thrown.
-4. The 7Zip format doesn't allow for reading as a forward-only stream so 7Zip is only supported through the Archive API
+4. The 7Zip format doesn't allow for reading as a forward-only stream so 7Zip is only supported through the Archive API. See [7Zip Format Notes](#7zip-format-notes) for details on async extraction behavior.
 5. LZip has no support for extra data like the file name or timestamp. There is a default filename used when looking at the entry Key on the archive.
 
 ### Zip Format Notes
@@ -32,6 +35,18 @@
 - Multi-volume/split ZIP archives require ZipArchive (seekable streams) as ZipReader cannot seek across volume files.
 - ZipReader processes entries from LocalEntry headers (which include directory entries ending with `/`) and intentionally skips DirectoryEntry headers from the central directory, as they are redundant in streaming mode - all entry data comes from LocalEntry headers which ZipReader has already processed.
 
+### 7Zip Format Notes
+
+- **Async Extraction Performance**: When using async extraction methods (e.g., `ExtractAllEntries()` with `MoveToNextEntryAsync()`), each file creates its own decompression stream to avoid state corruption in the LZMA decoder. This is less efficient than synchronous extraction, which can reuse a single decompression stream for multiple files in the same folder.
+  
+  **Performance Impact**: For archives with many small files in the same compression folder, async extraction will be slower than synchronous extraction because it must:
+  1. Create a new LZMA decoder for each file
+  2. Skip through the decompressed data to reach each file's starting position
+  
+  **Recommendation**: For best performance with 7Zip archives, use synchronous extraction methods (`MoveToNextEntry()` and `WriteEntryToDirectory()`) when possible. Use async methods only when you need to avoid blocking the thread (e.g., in UI applications or async-only contexts).
+  
+  **Technical Details**: 7Zip archives group files into "folders" (compression units), where all files in a folder share one continuous LZMA-compressed stream. The LZMA decoder maintains internal state (dictionary window, decoder positions) that assumes sequential, non-interruptible processing. Async operations can yield control during awaits, which would corrupt this shared state. To avoid this, async extraction creates a fresh decoder stream for each file.
+
 ## Compression Streams
 
 For those who want to directly compress/decompress bits. The single file formats are represented here as well. However, BZip2, LZip and XZ have no metadata (GZip has a little) so using them without something like a Tar file makes little sense.

OLD_CHANGELOG.md

@@ -0,0 +1,142 @@
+
+# Version Log
+
+* [Releases](https://github.com/adamhathcock/sharpcompress/releases)
+
+## Version 0.18
+
+* [Now on Github releases](https://github.com/adamhathcock/sharpcompress/releases/tag/0.18)
+
+## Version 0.17.1
+
+* Fix - [Bug Fix for .NET Core on Windows](https://github.com/adamhathcock/sharpcompress/pull/257)
+
+## Version 0.17.0
+
+* New - Full LZip support! Can read and write LZip files and Tars inside LZip files. [Make LZip a first class citizen. #241](https://github.com/adamhathcock/sharpcompress/issues/241)
+* New - XZ read support! Can read XZ files and Tars inside XZ files. [XZ in SharpCompress #91](https://github.com/adamhathcock/sharpcompress/issues/94)
+* Fix - [Regression - zip file writing on seekable streams always assumed stream start was 0. Introduced with Zip64 writing.](https://github.com/adamhathcock/sharpcompress/issues/244)
+* Fix - [Zip files with post-data descriptors can be properly skipped via decompression](https://github.com/adamhathcock/sharpcompress/issues/162)
+
+## Version 0.16.2
+
+* Fix [.NET 3.5 should support files and cryptography (was a regression from 0.16.0)](https://github.com/adamhathcock/sharpcompress/pull/251)
+* Fix [Zip per entry compression customization wrote the wrong method into the zip archive](https://github.com/adamhathcock/sharpcompress/pull/249)
+
+## Version 0.16.1
+
+* Fix [Preserve compression method when getting a compressed stream](https://github.com/adamhathcock/sharpcompress/pull/235)
+* Fix [RAR entry key normalization fix](https://github.com/adamhathcock/sharpcompress/issues/201)
+
+## Version 0.16.0
+
+* Breaking - [Progress Event Tracking rethink](https://github.com/adamhathcock/sharpcompress/pull/226)
+* Update to VS2017 - [VS2017](https://github.com/adamhathcock/sharpcompress/pull/231) - Framework targets have been changed.
+* New - [Add Zip64 writing](https://github.com/adamhathcock/sharpcompress/pull/211)
+* [Fix invalid/mismatching Zip version flags.](https://github.com/adamhathcock/sharpcompress/issues/164) - This allows nuget/System.IO.Packaging to read zip files generated by SharpCompress
+* [Fix 7Zip directory hiding](https://github.com/adamhathcock/sharpcompress/pull/215/files)
+* [Verify RAR CRC headers](https://github.com/adamhathcock/sharpcompress/pull/220)
+
+## Version 0.15.2
+
+* [Fix invalid headers](https://github.com/adamhathcock/sharpcompress/pull/210) - fixes an issue creating large-ish zip archives that was introduced with zip64 reading.
+
+## Version 0.15.1
+
+* [Zip64 extending information and ZipReader](https://github.com/adamhathcock/sharpcompress/pull/206)
+
+## Version 0.15.0
+
+* [Add zip64 support for ZipArchive extraction](https://github.com/adamhathcock/sharpcompress/pull/205)
+
+## Version 0.14.1
+
+* [.NET Assemblies aren't strong named](https://github.com/adamhathcock/sharpcompress/issues/158)
+* [Pkware encryption for Zip files didn't allow for multiple reads of an entry](https://github.com/adamhathcock/sharpcompress/issues/197)
+* [GZip Entry couldn't be read multiple times](https://github.com/adamhathcock/sharpcompress/issues/198)
+
+## Version 0.14.0
+
+* [Support for LZip reading in for Tars](https://github.com/adamhathcock/sharpcompress/pull/191)
+
+## Version 0.13.1
+
+* [Fix null password on ReaderFactory. Fix null options on SevenZipArchive](https://github.com/adamhathcock/sharpcompress/pull/188)
+* [Make PpmdProperties lazy to avoid unnecessary allocations.](https://github.com/adamhathcock/sharpcompress/pull/185)
+
+## Version 0.13.0
+
+* Breaking change: Big refactor of Options on API.
+* 7Zip supports Deflate
+
+## Version 0.12.4
+
+* Forward only zip issue fix https://github.com/adamhathcock/sharpcompress/issues/160
+* Try to fix frameworks again by copying targets from JSON.NET
+
+## Version 0.12.3
+
+* 7Zip fixes https://github.com/adamhathcock/sharpcompress/issues/73
+* Maybe all profiles will work with project.json now
+
+## Version 0.12.2
+
+* Support Profile 259 again
+
+## Version 0.12.1
+
+* Support Silverlight 5
+
+## Version 0.12.0
+
+* .NET Core RTM!
+* Bug fix for Tar long paths
+
+## Version 0.11.6
+
+* Bug fix for global header in Tar
+* Writers now have a leaveOpen `bool` overload. They won't close streams if not-requested to.
+
+## Version 0.11.5
+
+* Bug fix in Skip method
+
+## Version 0.11.4
+
+* SharpCompress is now endian neutral (matters for Mono platforms)
+* Fix for Inflate (need to change implementation)
+* Fixes for RAR detection
+
+## Version 0.11.1
+
+* Added Cancel on IReader
+* Removed .NET 2.0 support and LinqBridge dependency
+
+## Version 0.11
+
+* Been over a year, contains mainly fixes from contributors!
+* Possible breaking change: ArchiveEncoding is UTF8 by default now.
+* TAR supports writing long names using longlink
+* RAR Protect Header added
+
+## Version 0.10.3
+
+* Finally fixed Disposal issue when creating a new archive with the Archive API
+
+## Version 0.10.2
+
+* Fixed Rar Header reading for invalid extended time headers.
+* Windows Store assembly is now strong named
+* Known issues with Long Tar names being worked on
+* Updated to VS2013
+* Portable targets SL5 and Windows Phone 8 (up from SL4 and WP7)
+
+## Version 0.10.1
+
+* Fixed 7Zip extraction performance problem
+
+## Version 0.10:
+
+* Added support for RAR Decryption (thanks to https://github.com/hrasyid)
+* Embedded some BouncyCastle crypto classes to allow RAR Decryption and Winzip AES Decryption in Portable and Windows Store DLLs
+* Built in Release (I think)

README.md

@@ -4,7 +4,7 @@ SharpCompress is a compression library in pure C# for .NET Framework 4.8, .NET 8
 
 The major feature is support for non-seekable streams so large files can be processed on the fly (i.e. download stream).
 
-**NEW:** All I/O operations now support async/await for improved performance and scalability. See the [Async Usage](#async-usage) section below.
+**NEW:** All I/O operations now support async/await for improved performance and scalability. See the [USAGE.md](USAGE.md#async-examples) for examples.
 
 GitHub Actions Build -
 [![SharpCompress](https://github.com/adamhathcock/sharpcompress/actions/workflows/dotnetcore.yml/badge.svg)](https://github.com/adamhathcock/sharpcompress/actions/workflows/dotnetcore.yml)
@@ -34,235 +34,11 @@ Hi everyone. I hope you're using SharpCompress and finding it useful. Please giv
 
 Please do not email me directly to ask for help. If you think there is a real issue, please report it here.
 
-## Async Usage
-
-SharpCompress now provides full async/await support for all I/O operations, allowing for better performance and scalability in modern applications.
-
-### Async Reading Examples
-
-Extract entries asynchronously:
-```csharp
-using (Stream stream = File.OpenRead("archive.zip"))
-using (var reader = ReaderFactory.Open(stream))
-{
-    while (reader.MoveToNextEntry())
-    {
-        if (!reader.Entry.IsDirectory)
-        {
-            // Async extraction
-            await reader.WriteEntryToDirectoryAsync(
-                @"C:\temp",
-                new ExtractionOptions() { ExtractFullPath = true, Overwrite = true },
-                cancellationToken
-            );
-        }
-    }
-}
-```
-
-Extract all entries to directory asynchronously:
-```csharp
-using (Stream stream = File.OpenRead("archive.tar.gz"))
-using (var reader = ReaderFactory.Open(stream))
-{
-    await reader.WriteAllToDirectoryAsync(
-        @"C:\temp",
-        new ExtractionOptions() { ExtractFullPath = true, Overwrite = true },
-        cancellationToken
-    );
-}
-```
-
-Open entry stream asynchronously:
-```csharp
-using (var archive = ZipArchive.Open("archive.zip"))
-{
-    foreach (var entry in archive.Entries.Where(e => !e.IsDirectory))
-    {
-        using (var entryStream = await entry.OpenEntryStreamAsync(cancellationToken))
-        {
-            // Process stream asynchronously
-            await entryStream.CopyToAsync(outputStream, cancellationToken);
-        }
-    }
-}
-```
-
-### Async Writing Examples
-
-Write files asynchronously:
-```csharp
-using (Stream stream = File.OpenWrite("output.zip"))
-using (var writer = WriterFactory.Open(stream, ArchiveType.Zip, CompressionType.Deflate))
-{
-    await writer.WriteAsync("file1.txt", fileStream, DateTime.Now, cancellationToken);
-}
-```
-
-Write all files from directory asynchronously:
-```csharp
-using (Stream stream = File.OpenWrite("output.tar.gz"))
-using (var writer = WriterFactory.Open(stream, ArchiveType.Tar, new WriterOptions(CompressionType.GZip)))
-{
-    await writer.WriteAllAsync(@"D:\files", "*", SearchOption.AllDirectories, cancellationToken);
-}
-```
-
-All async methods support `CancellationToken` for graceful cancellation of long-running operations.
-
 ## Want to contribute?
 
 I'm always looking for help or ideas. Please submit code or email with ideas. Unfortunately, just letting me know you'd like to help is not enough because I really have no overall plan of what needs to be done. I'll definitely accept code submissions and add you as a member of the project!
 
-## TODOs (always lots)
-
-* RAR 5 decryption crc check support
-* 7Zip writing
-* Zip64 (Need writing and extend Reading)
-* Multi-volume Zip support.
-* ZStandard writing
-
-## Version Log
-
-* [Releases](https://github.com/adamhathcock/sharpcompress/releases)
-
-### Version 0.18
-
-* [Now on Github releases](https://github.com/adamhathcock/sharpcompress/releases/tag/0.18)
-
-### Version 0.17.1
-
-* Fix - [Bug Fix for .NET Core on Windows](https://github.com/adamhathcock/sharpcompress/pull/257)
-
-### Version 0.17.0
-
-* New - Full LZip support! Can read and write LZip files and Tars inside LZip files. [Make LZip a first class citizen. #241](https://github.com/adamhathcock/sharpcompress/issues/241)
-* New - XZ read support! Can read XZ files and Tars inside XZ files. [XZ in SharpCompress #91](https://github.com/adamhathcock/sharpcompress/issues/94)
-* Fix - [Regression - zip file writing on seekable streams always assumed stream start was 0. Introduced with Zip64 writing.](https://github.com/adamhathcock/sharpcompress/issues/244)
-* Fix - [Zip files with post-data descriptors can be properly skipped via decompression](https://github.com/adamhathcock/sharpcompress/issues/162)
-
-### Version 0.16.2
-
-* Fix [.NET 3.5 should support files and cryptography (was a regression from 0.16.0)](https://github.com/adamhathcock/sharpcompress/pull/251)
-* Fix [Zip per entry compression customization wrote the wrong method into the zip archive](https://github.com/adamhathcock/sharpcompress/pull/249)
-
-### Version 0.16.1
-
-* Fix [Preserve compression method when getting a compressed stream](https://github.com/adamhathcock/sharpcompress/pull/235)
-* Fix [RAR entry key normalization fix](https://github.com/adamhathcock/sharpcompress/issues/201)
-
-### Version 0.16.0
-
-* Breaking - [Progress Event Tracking rethink](https://github.com/adamhathcock/sharpcompress/pull/226)
-* Update to VS2017 - [VS2017](https://github.com/adamhathcock/sharpcompress/pull/231) - Framework targets have been changed.
-* New - [Add Zip64 writing](https://github.com/adamhathcock/sharpcompress/pull/211)
-* [Fix invalid/mismatching Zip version flags.](https://github.com/adamhathcock/sharpcompress/issues/164) - This allows nuget/System.IO.Packaging to read zip files generated by SharpCompress
-* [Fix 7Zip directory hiding](https://github.com/adamhathcock/sharpcompress/pull/215/files)
-* [Verify RAR CRC headers](https://github.com/adamhathcock/sharpcompress/pull/220)
-
-### Version 0.15.2
-
-* [Fix invalid headers](https://github.com/adamhathcock/sharpcompress/pull/210) - fixes an issue creating large-ish zip archives that was introduced with zip64 reading.
-
-### Version 0.15.1
-
-* [Zip64 extending information and ZipReader](https://github.com/adamhathcock/sharpcompress/pull/206)
-
-### Version 0.15.0
-
-* [Add zip64 support for ZipArchive extraction](https://github.com/adamhathcock/sharpcompress/pull/205)
-
-### Version 0.14.1
-
-* [.NET Assemblies aren't strong named](https://github.com/adamhathcock/sharpcompress/issues/158)
-* [Pkware encryption for Zip files didn't allow for multiple reads of an entry](https://github.com/adamhathcock/sharpcompress/issues/197)
-* [GZip Entry couldn't be read multiple times](https://github.com/adamhathcock/sharpcompress/issues/198)
-
-### Version 0.14.0
-
-* [Support for LZip reading in for Tars](https://github.com/adamhathcock/sharpcompress/pull/191)
-
-### Version 0.13.1
-
-* [Fix null password on ReaderFactory. Fix null options on SevenZipArchive](https://github.com/adamhathcock/sharpcompress/pull/188)
-* [Make PpmdProperties lazy to avoid unnecessary allocations.](https://github.com/adamhathcock/sharpcompress/pull/185)
-
-### Version 0.13.0
-
-* Breaking change: Big refactor of Options on API.
-* 7Zip supports Deflate
-
-### Version 0.12.4
-
-* Forward only zip issue fix https://github.com/adamhathcock/sharpcompress/issues/160
-* Try to fix frameworks again by copying targets from JSON.NET
-
-### Version 0.12.3
-
-* 7Zip fixes https://github.com/adamhathcock/sharpcompress/issues/73
-* Maybe all profiles will work with project.json now
-
-### Version 0.12.2
-
-* Support Profile 259 again
-
-### Version 0.12.1
-
-* Support Silverlight 5
-
-### Version 0.12.0
-
-* .NET Core RTM!
-* Bug fix for Tar long paths
-
-### Version 0.11.6
-
-* Bug fix for global header in Tar
-* Writers now have a leaveOpen `bool` overload. They won't close streams if not-requested to.
-
-### Version 0.11.5
-
-* Bug fix in Skip method
-
-### Version 0.11.4
-
-* SharpCompress is now endian neutral (matters for Mono platforms)
-* Fix for Inflate (need to change implementation)
-* Fixes for RAR detection
-
-### Version 0.11.1
-
-* Added Cancel on IReader
-* Removed .NET 2.0 support and LinqBridge dependency
-
-### Version 0.11
-
-* Been over a year, contains mainly fixes from contributors!
-* Possible breaking change: ArchiveEncoding is UTF8 by default now.
-* TAR supports writing long names using longlink
-* RAR Protect Header added
-
-### Version 0.10.3
-
-* Finally fixed Disposal issue when creating a new archive with the Archive API
-
-### Version 0.10.2
-
-* Fixed Rar Header reading for invalid extended time headers.
-* Windows Store assembly is now strong named
-* Known issues with Long Tar names being worked on
-* Updated to VS2013
-* Portable targets SL5 and Windows Phone 8 (up from SL4 and WP7)
-
-### Version 0.10.1
-
-* Fixed 7Zip extraction performance problem
-
-### Version 0.10:
-
-* Added support for RAR Decryption (thanks to https://github.com/hrasyid)
-* Embedded some BouncyCastle crypto classes to allow RAR Decryption and Winzip AES Decryption in Portable and Windows Store DLLs
-* Built in Release (I think)
+## Notes
 
 XZ implementation based on: https://github.com/sambott/XZ.NET by @sambott
 

SharpCompress.sln

@@ -20,7 +20,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Config", "Config", "{CDB425
 		.editorconfig = .editorconfig
 		Directory.Packages.props = Directory.Packages.props
 		NuGet.config = NuGet.config
-		.github\workflows\dotnetcore.yml = .github\workflows\dotnetcore.yml
+		.github\workflows\nuget-release.yml = .github\workflows\nuget-release.yml
 		USAGE.md = USAGE.md
 		README.md = README.md
 		FORMATS.md = FORMATS.md

USAGE.md

@@ -87,20 +87,17 @@ memoryStream.Position = 0;
 ### Extract all files from a rar file to a directory using RarArchive
 
 Note: Extracting a solid rar or 7z file needs to be done in sequential order to get acceptable decompression speed.
-It is explicitly recommended to use `ExtractAllEntries` when extracting an entire `IArchive` instead of iterating over all its `Entries`.
-Alternatively, use `IArchive.WriteToDirectory`.
+`ExtractAllEntries` is primarily intended for solid archives (like solid Rar) or 7Zip archives, where sequential extraction provides the best performance. For general/simple extraction with any supported archive type, use `archive.WriteToDirectory()` instead.
 
 ```C#
 using (var archive = RarArchive.Open("Test.rar"))
 {
-    using (var reader = archive.ExtractAllEntries())
+    // Simple extraction with RarArchive; this WriteToDirectory pattern works for all archive types
+    archive.WriteToDirectory(@"D:\temp", new ExtractionOptions()
     {
-        reader.WriteAllToDirectory(@"D:\temp", new ExtractionOptions()
-        {
-            ExtractFullPath = true,
-            Overwrite = true
-        });
-    }
+        ExtractFullPath = true,
+        Overwrite = true
+    });
 }
 ```
 
@@ -116,6 +113,29 @@ using (var archive = RarArchive.Open("Test.rar"))
 }
 ```
 
+### Extract solid Rar or 7Zip archives with progress reporting
+
+`ExtractAllEntries` only works for solid archives (Rar) or 7Zip archives. For optimal performance with these archive types, use this method:
+
+```C#
+using SharpCompress.Common;
+using SharpCompress.Readers;
+
+var progress = new Progress<ProgressReport>(report =>
+{
+    Console.WriteLine($"Extracting {report.EntryPath}: {report.PercentComplete}%");
+});
+
+using (var archive = RarArchive.Open("archive.rar", new ReaderOptions { Progress = progress })) // Must be solid Rar or 7Zip
+{
+    archive.WriteToDirectory(@"D:\output", new ExtractionOptions()
+    {
+        ExtractFullPath = true,
+        Overwrite = true
+    });
+}
+```
+
 ### Use ReaderFactory to autodetect archive type and Open the entry stream
 
 ```C#
@@ -298,14 +318,12 @@ using (var writer = WriterFactory.Open(stream, ArchiveType.Zip, CompressionType.
 ```C#
 using (var archive = ZipArchive.Open("archive.zip"))
 {
-    using (var reader = archive.ExtractAllEntries())
-    {
-        await reader.WriteAllToDirectoryAsync(
-            @"C:\output",
-            new ExtractionOptions() { ExtractFullPath = true, Overwrite = true },
-            cancellationToken
-        );
-    }
+    // Simple async extraction - works for all archive types
+    await archive.WriteToDirectoryAsync(
+        @"C:\output",
+        new ExtractionOptions() { ExtractFullPath = true, Overwrite = true },
+        cancellationToken
+    );
 }
 ```
 

build/Program.cs

@@ -1,7 +1,10 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Runtime.InteropServices;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
 using GlobExpressions;
 using static Bullseye.Targets;
 using static SimpleExec.Command;
@@ -11,7 +14,11 @@ const string Restore = "restore";
 const string Build = "build";
 const string Test = "test";
 const string Format = "format";
+const string CheckFormat = "check-format";
 const string Publish = "publish";
+const string DetermineVersion = "determine-version";
+const string UpdateVersion = "update-version";
+const string PushToNuGet = "push-to-nuget";
 
 Target(
     Clean,
@@ -42,12 +49,20 @@ Target(
 Target(
     Format,
     () =>
+    {
+        Run("dotnet", "tool restore");
+        Run("dotnet", "csharpier format .");
+    }
+);
+Target(
+    CheckFormat,
+    () =>
     {
         Run("dotnet", "tool restore");
         Run("dotnet", "csharpier check .");
     }
 );
-Target(Restore, [Format], () => Run("dotnet", "restore"));
+Target(Restore, [CheckFormat], () => Run("dotnet", "restore"));
 
 Target(
     Build,
@@ -61,7 +76,7 @@ Target(
 Target(
     Test,
     [Build],
-    ["net8.0", "net48"],
+    ["net10.0", "net48"],
     framework =>
     {
         IEnumerable<string> GetFiles(string d)
@@ -90,6 +105,164 @@ Target(
     }
 );
 
+Target(
+    DetermineVersion,
+    async () =>
+    {
+        var (version, isPrerelease) = await GetVersion();
+        Console.WriteLine($"VERSION={version}");
+        Console.WriteLine($"PRERELEASE={isPrerelease.ToString().ToLower()}");
+
+        // Write to environment file for GitHub Actions
+        var githubOutput = Environment.GetEnvironmentVariable("GITHUB_OUTPUT");
+        if (!string.IsNullOrEmpty(githubOutput))
+        {
+            File.AppendAllText(githubOutput, $"version={version}\n");
+            File.AppendAllText(githubOutput, $"prerelease={isPrerelease.ToString().ToLower()}\n");
+        }
+    }
+);
+
+Target(
+    UpdateVersion,
+    async () =>
+    {
+        var version = Environment.GetEnvironmentVariable("VERSION");
+        if (string.IsNullOrEmpty(version))
+        {
+            var (detectedVersion, _) = await GetVersion();
+            version = detectedVersion;
+        }
+
+        Console.WriteLine($"Updating project file with version: {version}");
+
+        var projectPath = "src/SharpCompress/SharpCompress.csproj";
+        var content = File.ReadAllText(projectPath);
+
+        // Get base version (without prerelease suffix)
+        var baseVersion = version.Split('-')[0];
+
+        // Update VersionPrefix
+        content = Regex.Replace(
+            content,
+            @"<VersionPrefix>[^<]*</VersionPrefix>",
+            $"<VersionPrefix>{version}</VersionPrefix>"
+        );
+
+        // Update AssemblyVersion
+        content = Regex.Replace(
+            content,
+            @"<AssemblyVersion>[^<]*</AssemblyVersion>",
+            $"<AssemblyVersion>{baseVersion}</AssemblyVersion>"
+        );
+
+        // Update FileVersion
+        content = Regex.Replace(
+            content,
+            @"<FileVersion>[^<]*</FileVersion>",
+            $"<FileVersion>{baseVersion}</FileVersion>"
+        );
+
+        File.WriteAllText(projectPath, content);
+        Console.WriteLine($"Updated VersionPrefix to: {version}");
+        Console.WriteLine($"Updated AssemblyVersion and FileVersion to: {baseVersion}");
+    }
+);
+
+Target(
+    PushToNuGet,
+    () =>
+    {
+        var apiKey = Environment.GetEnvironmentVariable("NUGET_API_KEY");
+        if (string.IsNullOrEmpty(apiKey))
+        {
+            Console.WriteLine(
+                "NUGET_API_KEY environment variable is not set. Skipping NuGet push."
+            );
+            return;
+        }
+
+        var packages = Directory.GetFiles("artifacts", "*.nupkg");
+        if (packages.Length == 0)
+        {
+            Console.WriteLine("No packages found in artifacts directory.");
+            return;
+        }
+
+        foreach (var package in packages)
+        {
+            Console.WriteLine($"Pushing {package} to NuGet.org");
+            try
+            {
+                // Note: API key is passed via command line argument which is standard practice for dotnet nuget push
+                // The key is already in an environment variable and not displayed in normal output
+                Run(
+                    "dotnet",
+                    $"nuget push \"{package}\" --api-key {apiKey} --source https://api.nuget.org/v3/index.json --skip-duplicate"
+                );
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Failed to push {package}: {ex.Message}");
+                throw;
+            }
+        }
+    }
+);
+
 Target("default", [Publish], () => Console.WriteLine("Done!"));
 
 await RunTargetsAndExitAsync(args);
+
+static async Task<(string version, bool isPrerelease)> GetVersion()
+{
+    // Check if current commit has a version tag
+    var currentTag = (await GetGitOutput("tag", "--points-at HEAD"))
+        .Split('\n', StringSplitOptions.RemoveEmptyEntries)
+        .FirstOrDefault(tag => Regex.IsMatch(tag.Trim(), @"^\d+\.\d+\.\d+$"));
+
+    if (!string.IsNullOrEmpty(currentTag))
+    {
+        // Tagged release - use the tag as version
+        var version = currentTag.Trim();
+        Console.WriteLine($"Building tagged release version: {version}");
+        return (version, false);
+    }
+    else
+    {
+        // Not tagged - create prerelease version based on next minor version
+        var allTags = (await GetGitOutput("tag", "--list"))
+            .Split('\n', StringSplitOptions.RemoveEmptyEntries)
+            .Where(tag => Regex.IsMatch(tag.Trim(), @"^\d+\.\d+\.\d+$"))
+            .Select(tag => tag.Trim())
+            .ToList();
+
+        var lastTag = allTags.OrderBy(tag => Version.Parse(tag)).LastOrDefault() ?? "0.0.0";
+        var lastVersion = Version.Parse(lastTag);
+
+        // Increment minor version for next release
+        var nextVersion = new Version(lastVersion.Major, lastVersion.Minor + 1, 0);
+
+        // Use commit count since the last version tag if available; otherwise, fall back to total count
+        var revListArgs = allTags.Any() ? $"--count {lastTag}..HEAD" : "--count HEAD";
+        var commitCount = (await GetGitOutput("rev-list", revListArgs)).Trim();
+
+        var version = $"{nextVersion}-beta.{commitCount}";
+        Console.WriteLine($"Building prerelease version: {version}");
+        return (version, true);
+    }
+}
+
+static async Task<string> GetGitOutput(string command, string args)
+{
+    try
+    {
+        // Use SimpleExec's Read to execute git commands in a cross-platform way
+        var (output, _) = await ReadAsync("git", $"{command} {args}");
+        return output;
+    }
+    catch (Exception ex)
+    {
+        throw new Exception($"Git command failed: git {command} {args}\n{ex.Message}", ex);
+    }
+}

build/packages.lock.json

@@ -4,9 +4,9 @@
     "net10.0": {
       "Bullseye": {
         "type": "Direct",
-        "requested": "[6.0.0, )",
-        "resolved": "6.0.0",
-        "contentHash": "vgwwXfzs7jJrskWH7saHRMgPzziq/e86QZNWY1MnMxd7e+De7E7EX4K3C7yrvaK9y02SJoLxNxcLG/q5qUAghw=="
+        "requested": "[6.1.0, )",
+        "resolved": "6.1.0",
+        "contentHash": "fltnAJDe0BEX5eymXGUq+il2rSUA0pHqUonNDRH2TrvRu8SkU17mYG0IVpdmG2ibtfhdjNrv4CuTCxHOwcozCA=="
       },
       "Glob": {
         "type": "Direct",
@@ -14,11 +14,51 @@
         "resolved": "1.1.9",
         "contentHash": "AfK5+ECWYTP7G3AAdnU8IfVj+QpGjrh9GC2mpdcJzCvtQ4pnerAGwHsxJ9D4/RnhDUz2DSzd951O/lQjQby2Sw=="
       },
+      "Microsoft.NETFramework.ReferenceAssemblies": {
+        "type": "Direct",
+        "requested": "[1.0.3, )",
+        "resolved": "1.0.3",
+        "contentHash": "vUc9Npcs14QsyOD01tnv/m8sQUnGTGOw1BCmKcv77LBJY7OxhJ+zJF7UD/sCL3lYNFuqmQEVlkfS4Quif6FyYg==",
+        "dependencies": {
+          "Microsoft.NETFramework.ReferenceAssemblies.net461": "1.0.3"
+        }
+      },
+      "Microsoft.SourceLink.GitHub": {
+        "type": "Direct",
+        "requested": "[8.0.0, )",
+        "resolved": "8.0.0",
+        "contentHash": "G5q7OqtwIyGTkeIOAc3u2ZuV/kicQaec5EaRnc0pIeSnh9LUjj+PYQrJYBURvDt7twGl2PKA7nSN0kz1Zw5bnQ==",
+        "dependencies": {
+          "Microsoft.Build.Tasks.Git": "8.0.0",
+          "Microsoft.SourceLink.Common": "8.0.0"
+        }
+      },
+      "Microsoft.VisualStudio.Threading.Analyzers": {
+        "type": "Direct",
+        "requested": "[17.14.15, )",
+        "resolved": "17.14.15",
+        "contentHash": "mXQPJsbuUD2ydq4/ffd8h8tSOFCXec+2xJOVNCvXjuMOq/+5EKHq3D2m2MC2+nUaXeFMSt66VS/J4HdKBixgcw=="
+      },
       "SimpleExec": {
         "type": "Direct",
-        "requested": "[12.0.0, )",
-        "resolved": "12.0.0",
-        "contentHash": "ptxlWtxC8vM6Y6e3h9ZTxBBkOWnWrm/Sa1HT+2i1xcXY3Hx2hmKDZP5RShPf8Xr9D+ivlrXNy57ktzyH8kyt+Q=="
+        "requested": "[13.0.0, )",
+        "resolved": "13.0.0",
+        "contentHash": "zcCR1pupa1wI1VqBULRiQKeHKKZOuJhi/K+4V5oO+rHJZlaOD53ViFo1c3PavDoMAfSn/FAXGAWpPoF57rwhYg=="
+      },
+      "Microsoft.Build.Tasks.Git": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "bZKfSIKJRXLTuSzLudMFte/8CempWjVamNUR5eHJizsy+iuOuO/k2gnh7W0dHJmYY0tBf+gUErfluCv5mySAOQ=="
+      },
+      "Microsoft.NETFramework.ReferenceAssemblies.net461": {
+        "type": "Transitive",
+        "resolved": "1.0.3",
+        "contentHash": "AmOJZwCqnOCNp6PPcf9joyogScWLtwy0M1WkqfEQ0M9nYwyDD7EX9ZjscKS5iYnyvteX7kzSKFCKt9I9dXA6mA=="
+      },
+      "Microsoft.SourceLink.Common": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "dk9JPxTCIevS75HyEQ0E4OVAFhB2N+V9ShCXf8Q6FkUQZDkgLI12y679Nym1YqsiSysuQskT7Z+6nUf3yab6Vw=="
       }
     }
   }

src/SharpCompress/Archives/AbstractArchive.cs

@@ -1,14 +1,13 @@
-using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
+using System.Threading.Tasks;
 using SharpCompress.Common;
 using SharpCompress.IO;
 using SharpCompress.Readers;
 
 namespace SharpCompress.Archives;
 
-public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IArchiveExtractionListener
+public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IAsyncArchive
     where TEntry : IArchiveEntry
     where TVolume : IVolume
 {
@@ -17,11 +16,6 @@ public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IArchiveExtra
     private bool _disposed;
     private readonly SourceStream? _sourceStream;
 
-    public event EventHandler<ArchiveExtractionEventArgs<IArchiveEntry>>? EntryExtractionBegin;
-    public event EventHandler<ArchiveExtractionEventArgs<IArchiveEntry>>? EntryExtractionEnd;
-
-    public event EventHandler<CompressedBytesReadEventArgs>? CompressedBytesRead;
-    public event EventHandler<FilePartExtractionBeginEventArgs>? FilePartExtractionBegin;
     protected ReaderOptions ReaderOptions { get; }
 
     internal AbstractArchive(ArchiveType type, SourceStream sourceStream)
@@ -31,6 +25,12 @@ public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IArchiveExtra
         _sourceStream = sourceStream;
         _lazyVolumes = new LazyReadOnlyCollection<TVolume>(LoadVolumes(_sourceStream));
         _lazyEntries = new LazyReadOnlyCollection<TEntry>(LoadEntries(Volumes));
+        _lazyVolumesAsync = new LazyAsyncReadOnlyCollection<TVolume>(
+            LoadVolumesAsync(_sourceStream)
+        );
+        _lazyEntriesAsync = new LazyAsyncReadOnlyCollection<TEntry>(
+            LoadEntriesAsync(_lazyVolumesAsync)
+        );
     }
 
     internal AbstractArchive(ArchiveType type)
@@ -39,25 +39,16 @@ public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IArchiveExtra
         ReaderOptions = new();
         _lazyVolumes = new LazyReadOnlyCollection<TVolume>(Enumerable.Empty<TVolume>());
         _lazyEntries = new LazyReadOnlyCollection<TEntry>(Enumerable.Empty<TEntry>());
+        _lazyVolumesAsync = new LazyAsyncReadOnlyCollection<TVolume>(
+            AsyncEnumerableEx.Empty<TVolume>()
+        );
+        _lazyEntriesAsync = new LazyAsyncReadOnlyCollection<TEntry>(
+            AsyncEnumerableEx.Empty<TEntry>()
+        );
     }
 
     public ArchiveType Type { get; }
 
-    void IArchiveExtractionListener.FireEntryExtractionBegin(IArchiveEntry entry) =>
-        EntryExtractionBegin?.Invoke(this, new ArchiveExtractionEventArgs<IArchiveEntry>(entry));
-
-    void IArchiveExtractionListener.FireEntryExtractionEnd(IArchiveEntry entry) =>
-        EntryExtractionEnd?.Invoke(this, new ArchiveExtractionEventArgs<IArchiveEntry>(entry));
-
-    private static Stream CheckStreams(Stream stream)
-    {
-        if (!stream.CanSeek || !stream.CanRead)
-        {
-            throw new ArchiveException("Archive streams must be Readable and Seekable");
-        }
-        return stream;
-    }
-
     /// <summary>
     /// Returns an ReadOnlyCollection of all the RarArchiveEntries across the one or many parts of the RarArchive.
     /// </summary>
@@ -83,6 +74,19 @@ public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IArchiveExtra
     protected abstract IEnumerable<TVolume> LoadVolumes(SourceStream sourceStream);
     protected abstract IEnumerable<TEntry> LoadEntries(IEnumerable<TVolume> volumes);
 
+    protected virtual IAsyncEnumerable<TVolume> LoadVolumesAsync(SourceStream sourceStream) =>
+        LoadVolumes(sourceStream).ToAsyncEnumerable();
+
+    protected virtual async IAsyncEnumerable<TEntry> LoadEntriesAsync(
+        IAsyncEnumerable<TVolume> volumes
+    )
+    {
+        foreach (var item in LoadEntries(await volumes.ToListAsync()))
+        {
+            yield return item;
+        }
+    }
+
     IEnumerable<IArchiveEntry> IArchive.Entries => Entries.Cast<IArchiveEntry>();
 
     IEnumerable<IVolume> IArchive.Volumes => _lazyVolumes.Cast<IVolume>();
@@ -99,38 +103,12 @@ public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IArchiveExtra
         }
     }
 
-    void IArchiveExtractionListener.EnsureEntriesLoaded()
+    private void EnsureEntriesLoaded()
     {
         _lazyEntries.EnsureFullyLoaded();
         _lazyVolumes.EnsureFullyLoaded();
     }
 
-    void IExtractionListener.FireCompressedBytesRead(
-        long currentPartCompressedBytes,
-        long compressedReadBytes
-    ) =>
-        CompressedBytesRead?.Invoke(
-            this,
-            new CompressedBytesReadEventArgs(
-                currentFilePartCompressedBytesRead: currentPartCompressedBytes,
-                compressedBytesRead: compressedReadBytes
-            )
-        );
-
-    void IExtractionListener.FireFilePartExtractionBegin(
-        string name,
-        long size,
-        long compressedSize
-    ) =>
-        FilePartExtractionBegin?.Invoke(
-            this,
-            new FilePartExtractionBeginEventArgs(
-                compressedSize: compressedSize,
-                size: size,
-                name: name
-            )
-        );
-
     /// <summary>
     /// Use this method to extract all entries in an archive in order.
     /// This is primarily for SOLID Rar Archives or 7Zip Archives as they need to be
@@ -146,15 +124,16 @@ public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IArchiveExtra
     {
         if (!IsSolid && Type != ArchiveType.SevenZip)
         {
-            throw new InvalidOperationException(
+            throw new SharpCompressException(
                 "ExtractAllEntries can only be used on solid archives or 7Zip archives (which require random access)."
             );
         }
-        ((IArchiveExtractionListener)this).EnsureEntriesLoaded();
+        EnsureEntriesLoaded();
         return CreateReaderForSolidExtraction();
     }
 
     protected abstract IReader CreateReaderForSolidExtraction();
+    protected abstract ValueTask<IAsyncReader> CreateReaderForSolidExtractionAsync();
 
     /// <summary>
     /// Archive is SOLID (this means the Archive saved bytes by reusing information which helps for archives containing many small files).
@@ -173,8 +152,71 @@ public abstract class AbstractArchive<TEntry, TVolume> : IArchive, IArchiveExtra
     {
         get
         {
-            ((IArchiveExtractionListener)this).EnsureEntriesLoaded();
+            EnsureEntriesLoaded();
             return Entries.All(x => x.IsComplete);
         }
     }
+
+    #region Async Support
+
+    private readonly LazyAsyncReadOnlyCollection<TVolume> _lazyVolumesAsync;
+    private readonly LazyAsyncReadOnlyCollection<TEntry> _lazyEntriesAsync;
+
+    public virtual async ValueTask DisposeAsync()
+    {
+        if (!_disposed)
+        {
+            await foreach (var v in _lazyVolumesAsync)
+            {
+                v.Dispose();
+            }
+            foreach (var v in _lazyEntriesAsync.GetLoaded().Cast<Entry>())
+            {
+                v.Close();
+            }
+            _sourceStream?.Dispose();
+
+            _disposed = true;
+        }
+    }
+
+    private async ValueTask EnsureEntriesLoadedAsync()
+    {
+        await _lazyEntriesAsync.EnsureFullyLoaded();
+        await _lazyVolumesAsync.EnsureFullyLoaded();
+    }
+
+    public virtual IAsyncEnumerable<TEntry> EntriesAsync => _lazyEntriesAsync;
+    IAsyncEnumerable<IArchiveEntry> IAsyncArchive.EntriesAsync =>
+        EntriesAsync.Cast<TEntry, IArchiveEntry>();
+
+    public IAsyncEnumerable<IVolume> VolumesAsync => _lazyVolumesAsync.Cast<TVolume, IVolume>();
+
+    public async ValueTask<IAsyncReader> ExtractAllEntriesAsync()
+    {
+        if (!IsSolid && Type != ArchiveType.SevenZip)
+        {
+            throw new SharpCompressException(
+                "ExtractAllEntries can only be used on solid archives or 7Zip archives (which require random access)."
+            );
+        }
+        await EnsureEntriesLoadedAsync();
+        return await CreateReaderForSolidExtractionAsync();
+    }
+
+    public virtual ValueTask<bool> IsSolidAsync() => new(false);
+
+    public async ValueTask<bool> IsCompleteAsync()
+    {
+        await EnsureEntriesLoadedAsync();
+        return await EntriesAsync.All(x => x.IsComplete);
+    }
+
+    public async ValueTask<long> TotalSizeAsync() =>
+        await EntriesAsync.Aggregate(0L, (total, cf) => total + cf.CompressedSize);
+
+    public async ValueTask<long> TotalUncompressSizeAsync() =>
+        await EntriesAsync.Aggregate(0L, (total, cf) => total + cf.Size);
+
+    #endregion
 }

src/SharpCompress/Archives/AbstractWritableArchive.cs

@@ -162,7 +162,7 @@ public abstract class AbstractWritableArchive<TEntry, TVolume>
         SaveTo(stream, options, OldEntries, newEntries);
     }
 
-    public async Task SaveToAsync(
+    public async ValueTask SaveToAsync(
         Stream stream,
         WriterOptions options,
         CancellationToken cancellationToken = default
@@ -208,7 +208,7 @@ public abstract class AbstractWritableArchive<TEntry, TVolume>
         IEnumerable<TEntry> newEntries
     );
 
-    protected abstract Task SaveToAsync(
+    protected abstract ValueTask SaveToAsync(
         Stream stream,
         WriterOptions options,
         IEnumerable<TEntry> oldEntries,

src/SharpCompress/Archives/ArchiveFactory.cs

@@ -2,6 +2,8 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Common;
 using SharpCompress.Factories;
 using SharpCompress.IO;
@@ -24,6 +26,28 @@ public static class ArchiveFactory
         return FindFactory<IArchiveFactory>(stream).Open(stream, readerOptions);
     }
 
+    /// <summary>
+    /// Opens an Archive for random access asynchronously
+    /// </summary>
+    /// <param name="stream"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    public static async ValueTask<IAsyncArchive> OpenAsync(
+        Stream stream,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        readerOptions ??= new ReaderOptions();
+        stream = SharpCompressStream.Create(stream, bufferSize: readerOptions.BufferSize);
+        var factory = await FindFactoryAsync<IArchiveFactory>(stream, cancellationToken)
+            .ConfigureAwait(false);
+        return await factory
+            .OpenAsync(stream, readerOptions, cancellationToken)
+            .ConfigureAwait(false);
+    }
+
     public static IWritableArchive Create(ArchiveType type)
     {
         var factory = Factory
@@ -49,6 +73,22 @@ public static class ArchiveFactory
         return Open(new FileInfo(filePath), options);
     }
 
+    /// <summary>
+    /// Opens an Archive from a filepath asynchronously.
+    /// </summary>
+    /// <param name="filePath"></param>
+    /// <param name="options"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        string filePath,
+        ReaderOptions? options = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        filePath.NotNullOrEmpty(nameof(filePath));
+        return OpenAsync(new FileInfo(filePath), options, cancellationToken);
+    }
+
     /// <summary>
     /// Constructor with a FileInfo object to an existing file.
     /// </summary>
@@ -61,6 +101,25 @@ public static class ArchiveFactory
         return FindFactory<IArchiveFactory>(fileInfo).Open(fileInfo, options);
     }
 
+    /// <summary>
+    /// Opens an Archive from a FileInfo object asynchronously.
+    /// </summary>
+    /// <param name="fileInfo"></param>
+    /// <param name="options"></param>
+    /// <param name="cancellationToken"></param>
+    public static async ValueTask<IAsyncArchive> OpenAsync(
+        FileInfo fileInfo,
+        ReaderOptions? options = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        options ??= new ReaderOptions { LeaveStreamOpen = false };
+
+        var factory = await FindFactoryAsync<IArchiveFactory>(fileInfo, cancellationToken)
+            .ConfigureAwait(false);
+        return await factory.OpenAsync(fileInfo, options, cancellationToken).ConfigureAwait(false);
+    }
+
     /// <summary>
     /// Constructor with IEnumerable FileInfo objects, multi and split support.
     /// </summary>
@@ -87,6 +146,40 @@ public static class ArchiveFactory
         return FindFactory<IMultiArchiveFactory>(fileInfo).Open(filesArray, options);
     }
 
+    /// <summary>
+    /// Opens a multi-part archive from files asynchronously.
+    /// </summary>
+    /// <param name="fileInfos"></param>
+    /// <param name="options"></param>
+    /// <param name="cancellationToken"></param>
+    public static async ValueTask<IAsyncArchive> OpenAsync(
+        IEnumerable<FileInfo> fileInfos,
+        ReaderOptions? options = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        fileInfos.NotNull(nameof(fileInfos));
+        var filesArray = fileInfos.ToArray();
+        if (filesArray.Length == 0)
+        {
+            throw new InvalidOperationException("No files to open");
+        }
+
+        var fileInfo = filesArray[0];
+        if (filesArray.Length == 1)
+        {
+            return await OpenAsync(fileInfo, options, cancellationToken).ConfigureAwait(false);
+        }
+
+        fileInfo.NotNull(nameof(fileInfo));
+        options ??= new ReaderOptions { LeaveStreamOpen = false };
+
+        var factory = FindFactory<IMultiArchiveFactory>(fileInfo);
+        return await factory
+            .OpenAsync(filesArray, options, cancellationToken)
+            .ConfigureAwait(false);
+    }
+
     /// <summary>
     /// Constructor with IEnumerable FileInfo objects, multi and split support.
     /// </summary>
@@ -113,6 +206,41 @@ public static class ArchiveFactory
         return FindFactory<IMultiArchiveFactory>(firstStream).Open(streamsArray, options);
     }
 
+    /// <summary>
+    /// Opens a multi-part archive from streams asynchronously.
+    /// </summary>
+    /// <param name="streams"></param>
+    /// <param name="options"></param>
+    /// <param name="cancellationToken"></param>
+    public static async ValueTask<IAsyncArchive> OpenAsync(
+        IEnumerable<Stream> streams,
+        ReaderOptions? options = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        streams.NotNull(nameof(streams));
+        var streamsArray = streams.ToArray();
+        if (streamsArray.Length == 0)
+        {
+            throw new InvalidOperationException("No streams");
+        }
+
+        var firstStream = streamsArray[0];
+        if (streamsArray.Length == 1)
+        {
+            return await OpenAsync(firstStream, options, cancellationToken).ConfigureAwait(false);
+        }
+
+        firstStream.NotNull(nameof(firstStream));
+        options ??= new ReaderOptions();
+
+        var factory = FindFactory<IMultiArchiveFactory>(firstStream);
+        return await factory
+            .OpenAsync(streamsArray, options, cancellationToken)
+            .ConfigureAwait(false);
+    }
+
     /// <summary>
     /// Extract to specific directory, retaining filename
     /// </summary>
@@ -166,6 +294,52 @@ public static class ArchiveFactory
         );
     }
 
+    private static async ValueTask<T> FindFactoryAsync<T>(
+        FileInfo finfo,
+        CancellationToken cancellationToken
+    )
+        where T : IFactory
+    {
+        finfo.NotNull(nameof(finfo));
+        using Stream stream = finfo.OpenRead();
+        return await FindFactoryAsync<T>(stream, cancellationToken);
+    }
+
+    private static async ValueTask<T> FindFactoryAsync<T>(
+        Stream stream,
+        CancellationToken cancellationToken
+    )
+        where T : IFactory
+    {
+        stream.NotNull(nameof(stream));
+        if (!stream.CanRead || !stream.CanSeek)
+        {
+            throw new ArgumentException("Stream should be readable and seekable");
+        }
+
+        var factories = Factory.Factories.OfType<T>();
+
+        var startPosition = stream.Position;
+
+        foreach (var factory in factories)
+        {
+            stream.Seek(startPosition, SeekOrigin.Begin);
+
+            if (await factory.IsArchiveAsync(stream, cancellationToken: cancellationToken))
+            {
+                stream.Seek(startPosition, SeekOrigin.Begin);
+
+                return factory;
+            }
+        }
+
+        var extensions = string.Join(", ", factories.Select(item => item.Name));
+
+        throw new InvalidOperationException(
+            $"Cannot determine compressed stream type. Supported Archive Formats: {extensions}"
+        );
+    }
+
     public static bool IsArchive(
         string filePath,
         out ArchiveType? type,

src/SharpCompress/Archives/AutoArchiveFactory.cs

@@ -1,12 +1,14 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Common;
 using SharpCompress.Readers;
 
 namespace SharpCompress.Archives;
 
-class AutoArchiveFactory : IArchiveFactory
+internal class AutoArchiveFactory : IArchiveFactory
 {
     public string Name => nameof(AutoArchiveFactory);
 
@@ -20,11 +22,30 @@ class AutoArchiveFactory : IArchiveFactory
         int bufferSize = ReaderOptions.DefaultBufferSize
     ) => throw new NotSupportedException();
 
+    public ValueTask<bool> IsArchiveAsync(
+        Stream stream,
+        string? password = null,
+        int bufferSize = ReaderOptions.DefaultBufferSize,
+        CancellationToken cancellationToken = default
+    ) => throw new NotSupportedException();
+
     public FileInfo? GetFilePart(int index, FileInfo part1) => throw new NotSupportedException();
 
     public IArchive Open(Stream stream, ReaderOptions? readerOptions = null) =>
         ArchiveFactory.Open(stream, readerOptions);
 
+    public async ValueTask<IAsyncArchive> OpenAsync(
+        Stream stream,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    ) => await ArchiveFactory.OpenAsync(stream, readerOptions, cancellationToken);
+
     public IArchive Open(FileInfo fileInfo, ReaderOptions? readerOptions = null) =>
         ArchiveFactory.Open(fileInfo, readerOptions);
+
+    public async ValueTask<IAsyncArchive> OpenAsync(
+        FileInfo fileInfo,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    ) => await ArchiveFactory.OpenAsync(fileInfo, readerOptions, cancellationToken);
 }

src/SharpCompress/Archives/GZip/GZipArchive.cs

@@ -102,6 +102,70 @@ public class GZipArchive : AbstractWritableArchive<GZipArchiveEntry, GZipVolume>
         );
     }
 
+    /// <summary>
+    /// Opens a GZipArchive asynchronously from a stream.
+    /// </summary>
+    /// <param name="stream"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        Stream stream,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(stream, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a GZipArchive asynchronously from a FileInfo.
+    /// </summary>
+    /// <param name="fileInfo"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        FileInfo fileInfo,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfo, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a GZipArchive asynchronously from multiple streams.
+    /// </summary>
+    /// <param name="streams"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<Stream> streams,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(streams, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a GZipArchive asynchronously from multiple FileInfo objects.
+    /// </summary>
+    /// <param name="fileInfos"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<FileInfo> fileInfos,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfos, readerOptions));
+    }
+
     public static GZipArchive Create() => new();
 
     /// <summary>
@@ -138,10 +202,13 @@ public class GZipArchive : AbstractWritableArchive<GZipArchiveEntry, GZipVolume>
         SaveTo(stream, new WriterOptions(CompressionType.GZip));
     }
 
-    public Task SaveToAsync(string filePath, CancellationToken cancellationToken = default) =>
+    public ValueTask SaveToAsync(string filePath, CancellationToken cancellationToken = default) =>
         SaveToAsync(new FileInfo(filePath), cancellationToken);
 
-    public async Task SaveToAsync(FileInfo fileInfo, CancellationToken cancellationToken = default)
+    public async ValueTask SaveToAsync(
+        FileInfo fileInfo,
+        CancellationToken cancellationToken = default
+    )
     {
         using var stream = fileInfo.Open(FileMode.Create, FileAccess.Write);
         await SaveToAsync(stream, new WriterOptions(CompressionType.GZip), cancellationToken)
@@ -167,6 +234,28 @@ public class GZipArchive : AbstractWritableArchive<GZipArchiveEntry, GZipVolume>
         return true;
     }
 
+    public static async ValueTask<bool> IsGZipFileAsync(
+        Stream stream,
+        CancellationToken cancellationToken = default
+    )
+    {
+        // read the header on the first read
+        byte[] header = new byte[10];
+
+        // workitem 8501: handle edge case (decompress empty stream)
+        if (!await stream.ReadFullyAsync(header, cancellationToken).ConfigureAwait(false))
+        {
+            return false;
+        }
+
+        if (header[0] != 0x1F || header[1] != 0x8B || header[2] != 8)
+        {
+            return false;
+        }
+
+        return true;
+    }
+
     internal GZipArchive()
         : base(ArchiveType.GZip) { }
 
@@ -213,7 +302,7 @@ public class GZipArchive : AbstractWritableArchive<GZipArchiveEntry, GZipVolume>
         }
     }
 
-    protected override async Task SaveToAsync(
+    protected override async ValueTask SaveToAsync(
         Stream stream,
         WriterOptions options,
         IEnumerable<GZipArchiveEntry> oldEntries,
@@ -250,4 +339,11 @@ public class GZipArchive : AbstractWritableArchive<GZipArchiveEntry, GZipVolume>
         stream.Position = 0;
         return GZipReader.Open(stream);
     }
+
+    protected override ValueTask<IAsyncReader> CreateReaderForSolidExtractionAsync()
+    {
+        var stream = Volumes.Single().Stream;
+        stream.Position = 0;
+        return new(GZipReader.Open(stream));
+    }
 }

src/SharpCompress/Archives/GZip/GZipArchiveEntry.cs

@@ -23,10 +23,12 @@ public class GZipArchiveEntry : GZipEntry, IArchiveEntry
         return Parts.Single().GetCompressedStream().NotNull();
     }
 
-    public virtual Task<Stream> OpenEntryStreamAsync(CancellationToken cancellationToken = default)
+    public async ValueTask<Stream> OpenEntryStreamAsync(
+        CancellationToken cancellationToken = default
+    )
     {
         // GZip synchronous implementation is fast enough, just wrap it
-        return Task.FromResult(OpenEntryStream());
+        return OpenEntryStream();
     }
 
     #region IArchiveEntry Members

src/SharpCompress/Archives/IArchive.cs

@@ -7,12 +7,6 @@ namespace SharpCompress.Archives;
 
 public interface IArchive : IDisposable
 {
-    event EventHandler<ArchiveExtractionEventArgs<IArchiveEntry>> EntryExtractionBegin;
-    event EventHandler<ArchiveExtractionEventArgs<IArchiveEntry>> EntryExtractionEnd;
-
-    event EventHandler<CompressedBytesReadEventArgs> CompressedBytesRead;
-    event EventHandler<FilePartExtractionBeginEventArgs> FilePartExtractionBegin;
-
     IEnumerable<IArchiveEntry> Entries { get; }
     IEnumerable<IVolume> Volumes { get; }
 

src/SharpCompress/Archives/IArchiveEntry.cs

@@ -17,7 +17,7 @@ public interface IArchiveEntry : IEntry
     /// Opens the current entry as a stream that will decompress as it is read asynchronously.
     /// Read the entire stream or use SkipEntry on EntryStream.
     /// </summary>
-    Task<Stream> OpenEntryStreamAsync(CancellationToken cancellationToken = default);
+    ValueTask<Stream> OpenEntryStreamAsync(CancellationToken cancellationToken = default);
 
     /// <summary>
     /// The archive can find all the parts of the archive needed to extract this entry.

src/SharpCompress/Archives/IArchiveEntryExtensions.cs

@@ -1,3 +1,4 @@
+using System;
 using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
@@ -8,127 +9,157 @@ namespace SharpCompress.Archives;
 
 public static class IArchiveEntryExtensions
 {
-    public static void WriteTo(this IArchiveEntry archiveEntry, Stream streamToWriteTo)
+    private const int BufferSize = 81920;
+
+    /// <param name="archiveEntry">The archive entry to extract.</param>
+    extension(IArchiveEntry archiveEntry)
     {
-        if (archiveEntry.IsDirectory)
+        /// <summary>
+        /// Extract entry to the specified stream.
+        /// </summary>
+        /// <param name="streamToWriteTo">The stream to write the entry content to.</param>
+        /// <param name="progress">Optional progress reporter for tracking extraction progress.</param>
+        public void WriteTo(Stream streamToWriteTo, IProgress<ProgressReport>? progress = null)
         {
-            throw new ExtractionException("Entry is a file directory and cannot be extracted.");
+            if (archiveEntry.IsDirectory)
+            {
+                throw new ExtractionException("Entry is a file directory and cannot be extracted.");
+            }
+
+            using var entryStream = archiveEntry.OpenEntryStream();
+            var sourceStream = WrapWithProgress(entryStream, archiveEntry, progress);
+            sourceStream.CopyTo(streamToWriteTo, BufferSize);
         }
 
-        var streamListener = (IArchiveExtractionListener)archiveEntry.Archive;
-        streamListener.EnsureEntriesLoaded();
-        streamListener.FireEntryExtractionBegin(archiveEntry);
-        streamListener.FireFilePartExtractionBegin(
-            archiveEntry.Key ?? "Key",
-            archiveEntry.Size,
-            archiveEntry.CompressedSize
-        );
-        var entryStream = archiveEntry.OpenEntryStream();
-        using (entryStream)
+        /// <summary>
+        /// Extract entry to the specified stream asynchronously.
+        /// </summary>
+        /// <param name="streamToWriteTo">The stream to write the entry content to.</param>
+        /// <param name="cancellationToken">Cancellation token.</param>
+        /// <param name="progress">Optional progress reporter for tracking extraction progress.</param>
+        public async ValueTask WriteToAsync(
+            Stream streamToWriteTo,
+            IProgress<ProgressReport>? progress = null,
+            CancellationToken cancellationToken = default
+        )
         {
-            using Stream s = new ListeningStream(streamListener, entryStream);
-            s.CopyTo(streamToWriteTo);
+            if (archiveEntry.IsDirectory)
+            {
+                throw new ExtractionException("Entry is a file directory and cannot be extracted.");
+            }
+
+            using var entryStream = await archiveEntry.OpenEntryStreamAsync(cancellationToken);
+            var sourceStream = WrapWithProgress(entryStream, archiveEntry, progress);
+            await sourceStream
+                .CopyToAsync(streamToWriteTo, BufferSize, cancellationToken)
+                .ConfigureAwait(false);
         }
-        streamListener.FireEntryExtractionEnd(archiveEntry);
     }
 
-    public static async Task WriteToAsync(
-        this IArchiveEntry archiveEntry,
-        Stream streamToWriteTo,
-        CancellationToken cancellationToken = default
+    private static Stream WrapWithProgress(
+        Stream source,
+        IArchiveEntry entry,
+        IProgress<ProgressReport>? progress
     )
     {
-        if (archiveEntry.IsDirectory)
+        if (progress is null)
         {
-            throw new ExtractionException("Entry is a file directory and cannot be extracted.");
+            return source;
         }
 
-        var streamListener = (IArchiveExtractionListener)archiveEntry.Archive;
-        streamListener.EnsureEntriesLoaded();
-        streamListener.FireEntryExtractionBegin(archiveEntry);
-        streamListener.FireFilePartExtractionBegin(
-            archiveEntry.Key ?? "Key",
-            archiveEntry.Size,
-            archiveEntry.CompressedSize
+        var entryPath = entry.Key ?? string.Empty;
+        var totalBytes = GetEntrySizeSafe(entry);
+        return new ProgressReportingStream(
+            source,
+            progress,
+            entryPath,
+            totalBytes,
+            leaveOpen: true
         );
-        var entryStream = archiveEntry.OpenEntryStream();
-        using (entryStream)
-        {
-            using Stream s = new ListeningStream(streamListener, entryStream);
-            await s.CopyToAsync(streamToWriteTo, 81920, cancellationToken).ConfigureAwait(false);
-        }
-        streamListener.FireEntryExtractionEnd(archiveEntry);
     }
 
-    /// <summary>
-    /// Extract to specific directory, retaining filename
-    /// </summary>
-    public static void WriteToDirectory(
-        this IArchiveEntry entry,
-        string destinationDirectory,
-        ExtractionOptions? options = null
-    ) =>
-        ExtractionMethods.WriteEntryToDirectory(
-            entry,
-            destinationDirectory,
-            options,
-            entry.WriteToFile
-        );
+    private static long? GetEntrySizeSafe(IArchiveEntry entry)
+    {
+        try
+        {
+            var size = entry.Size;
+            return size >= 0 ? size : null;
+        }
+        catch (NotImplementedException)
+        {
+            return null;
+        }
+    }
 
-    /// <summary>
-    /// Extract to specific directory asynchronously, retaining filename
-    /// </summary>
-    public static Task WriteToDirectoryAsync(
-        this IArchiveEntry entry,
-        string destinationDirectory,
-        ExtractionOptions? options = null,
-        CancellationToken cancellationToken = default
-    ) =>
-        ExtractionMethods.WriteEntryToDirectoryAsync(
-            entry,
-            destinationDirectory,
-            options,
-            (x, opt) => entry.WriteToFileAsync(x, opt, cancellationToken),
-            cancellationToken
-        );
+    extension(IArchiveEntry entry)
+    {
+        /// <summary>
+        /// Extract to specific directory, retaining filename
+        /// </summary>
+        public void WriteToDirectory(
+            string destinationDirectory,
+            ExtractionOptions? options = null
+        ) =>
+            ExtractionMethods.WriteEntryToDirectory(
+                entry,
+                destinationDirectory,
+                options,
+                entry.WriteToFile
+            );
 
-    /// <summary>
-    /// Extract to specific file
-    /// </summary>
-    public static void WriteToFile(
-        this IArchiveEntry entry,
-        string destinationFileName,
-        ExtractionOptions? options = null
-    ) =>
-        ExtractionMethods.WriteEntryToFile(
-            entry,
-            destinationFileName,
-            options,
-            (x, fm) =>
-            {
-                using var fs = File.Open(destinationFileName, fm);
-                entry.WriteTo(fs);
-            }
-        );
+        /// <summary>
+        /// Extract to specific directory asynchronously, retaining filename
+        /// </summary>
+        public async ValueTask WriteToDirectoryAsync(
+            string destinationDirectory,
+            ExtractionOptions? options = null,
+            CancellationToken cancellationToken = default
+        ) =>
+            await ExtractionMethods
+                .WriteEntryToDirectoryAsync(
+                    entry,
+                    destinationDirectory,
+                    options,
+                    entry.WriteToFileAsync,
+                    cancellationToken
+                )
+                .ConfigureAwait(false);
 
-    /// <summary>
-    /// Extract to specific file asynchronously
-    /// </summary>
-    public static Task WriteToFileAsync(
-        this IArchiveEntry entry,
-        string destinationFileName,
-        ExtractionOptions? options = null,
-        CancellationToken cancellationToken = default
-    ) =>
-        ExtractionMethods.WriteEntryToFileAsync(
-            entry,
-            destinationFileName,
-            options,
-            async (x, fm) =>
-            {
-                using var fs = File.Open(destinationFileName, fm);
-                await entry.WriteToAsync(fs, cancellationToken).ConfigureAwait(false);
-            },
-            cancellationToken
-        );
+        /// <summary>
+        /// Extract to specific file
+        /// </summary>
+        public void WriteToFile(string destinationFileName, ExtractionOptions? options = null) =>
+            ExtractionMethods.WriteEntryToFile(
+                entry,
+                destinationFileName,
+                options,
+                (x, fm) =>
+                {
+                    using var fs = File.Open(destinationFileName, fm);
+                    entry.WriteTo(fs);
+                }
+            );
+
+        /// <summary>
+        /// Extract to specific file asynchronously
+        /// </summary>
+        public async ValueTask WriteToFileAsync(
+            string destinationFileName,
+            ExtractionOptions? options = null,
+            CancellationToken cancellationToken = default
+        ) =>
+            await ExtractionMethods
+                .WriteEntryToFileAsync(
+                    entry,
+                    destinationFileName,
+                    options,
+                    async (x, fm, ct) =>
+                    {
+                        using var fs = File.Open(destinationFileName, fm);
+                        await entry.WriteToAsync(fs, null, ct).ConfigureAwait(false);
+                    },
+                    cancellationToken
+                )
+                .ConfigureAwait(false);
+    }
 }

src/SharpCompress/Archives/IArchiveExtensions.cs

@@ -1,8 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Linq;
-using System.Threading;
 using SharpCompress.Common;
 using SharpCompress.Readers;
 
@@ -10,76 +8,75 @@ namespace SharpCompress.Archives;
 
 public static class IArchiveExtensions
 {
-    /// <summary>
-    /// Extract to specific directory, retaining filename
-    /// </summary>
-    public static void WriteToDirectory(
-        this IArchive archive,
-        string destinationDirectory,
-        ExtractionOptions? options = null
-    )
-    {
-        using var reader = archive.ExtractAllEntries();
-        reader.WriteAllToDirectory(destinationDirectory, options);
-    }
-
-    /// <summary>
-    /// Extracts the archive to the destination directory. Directories will be created as needed.
-    /// </summary>
     /// <param name="archive">The archive to extract.</param>
-    /// <param name="destination">The folder to extract into.</param>
-    /// <param name="progressReport">Optional progress report callback.</param>
-    /// <param name="cancellationToken">Optional cancellation token.</param>
-    public static void ExtractToDirectory(
-        this IArchive archive,
-        string destination,
-        Action<double>? progressReport = null,
-        CancellationToken cancellationToken = default
-    )
+    extension(IArchive archive)
     {
-        // Prepare for progress reporting
-        var totalBytes = archive.TotalUncompressSize;
-        var bytesRead = 0L;
-
-        // Tracking for created directories.
-        var seenDirectories = new HashSet<string>();
-
-        // Extract
-        foreach (var entry in archive.Entries)
+        /// <summary>
+        /// Extract to specific directory with progress reporting
+        /// </summary>
+        /// <param name="destinationDirectory">The folder to extract into.</param>
+        /// <param name="options">Extraction options.</param>
+        /// <param name="progress">Optional progress reporter for tracking extraction progress.</param>
+        public void WriteToDirectory(
+            string destinationDirectory,
+            ExtractionOptions? options = null,
+            IProgress<ProgressReport>? progress = null
+        )
         {
-            cancellationToken.ThrowIfCancellationRequested();
-
-            if (entry.IsDirectory)
+            // For solid archives (Rar, 7Zip), use the optimized reader-based approach
+            if (archive.IsSolid || archive.Type == ArchiveType.SevenZip)
             {
-                var dirPath = Path.Combine(destination, entry.Key.NotNull("Entry Key is null"));
-                if (
-                    Path.GetDirectoryName(dirPath + "/") is { } emptyDirectory
-                    && seenDirectories.Add(dirPath)
-                )
-                {
-                    Directory.CreateDirectory(emptyDirectory);
-                }
-                continue;
+                using var reader = archive.ExtractAllEntries();
+                reader.WriteAllToDirectory(destinationDirectory, options);
             }
-
-            // Create each directory if not already created
-            var path = Path.Combine(destination, entry.Key.NotNull("Entry Key is null"));
-            if (Path.GetDirectoryName(path) is { } directory)
+            else
             {
-                if (!Directory.Exists(directory) && !seenDirectories.Contains(directory))
-                {
-                    Directory.CreateDirectory(directory);
-                    seenDirectories.Add(directory);
-                }
+                // For non-solid archives, extract entries directly
+                archive.WriteToDirectoryInternal(destinationDirectory, options, progress);
             }
+        }
 
-            // Write file
-            using var fs = File.OpenWrite(path);
-            entry.WriteTo(fs);
+        private void WriteToDirectoryInternal(
+            string destinationDirectory,
+            ExtractionOptions? options,
+            IProgress<ProgressReport>? progress
+        )
+        {
+            // Prepare for progress reporting
+            var totalBytes = archive.TotalUncompressSize;
+            var bytesRead = 0L;
 
-            // Update progress
-            bytesRead += entry.Size;
-            progressReport?.Invoke(bytesRead / (double)totalBytes);
+            // Tracking for created directories.
+            var seenDirectories = new HashSet<string>();
+
+            // Extract
+            foreach (var entry in archive.Entries)
+            {
+                if (entry.IsDirectory)
+                {
+                    var dirPath = Path.Combine(
+                        destinationDirectory,
+                        entry.Key.NotNull("Entry Key is null")
+                    );
+                    if (
+                        Path.GetDirectoryName(dirPath + "/") is { } parentDirectory
+                        && seenDirectories.Add(dirPath)
+                    )
+                    {
+                        Directory.CreateDirectory(parentDirectory);
+                    }
+                    continue;
+                }
+
+                // Use the entry's WriteToDirectory method which respects ExtractionOptions
+                entry.WriteToDirectory(destinationDirectory, options);
+
+                // Update progress
+                bytesRead += entry.Size;
+                progress?.Report(
+                    new ProgressReport(entry.Key ?? string.Empty, bytesRead, totalBytes)
+                );
+            }
         }
     }
 }

src/SharpCompress/Archives/IArchiveExtractionListener.cs

@@ -1,10 +0,0 @@
-using SharpCompress.Common;
-
-namespace SharpCompress.Archives;
-
-internal interface IArchiveExtractionListener : IExtractionListener
-{
-    void EnsureEntriesLoaded();
-    void FireEntryExtractionBegin(IArchiveEntry entry);
-    void FireEntryExtractionEnd(IArchiveEntry entry);
-}

src/SharpCompress/Archives/IArchiveFactory.cs

@@ -1,4 +1,6 @@
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Factories;
 using SharpCompress.Readers;
 
@@ -26,10 +28,34 @@ public interface IArchiveFactory : IFactory
     /// <param name="readerOptions">reading options.</param>
     IArchive Open(Stream stream, ReaderOptions? readerOptions = null);
 
+    /// <summary>
+    /// Opens an Archive for random access asynchronously.
+    /// </summary>
+    /// <param name="stream">An open, readable and seekable stream.</param>
+    /// <param name="readerOptions">reading options.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    ValueTask<IAsyncArchive> OpenAsync(
+        Stream stream,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    );
+
     /// <summary>
     /// Constructor with a FileInfo object to an existing file.
     /// </summary>
     /// <param name="fileInfo">the file to open.</param>
     /// <param name="readerOptions">reading options.</param>
     IArchive Open(FileInfo fileInfo, ReaderOptions? readerOptions = null);
+
+    /// <summary>
+    /// Opens an Archive from a FileInfo object asynchronously.
+    /// </summary>
+    /// <param name="fileInfo">the file to open.</param>
+    /// <param name="readerOptions">reading options.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    ValueTask<IAsyncArchive> OpenAsync(
+        FileInfo fileInfo,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    );
 }

src/SharpCompress/Archives/IAsyncArchive.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using SharpCompress.Common;
+using SharpCompress.Readers;
+
+namespace SharpCompress.Archives;
+
+public interface IAsyncArchive : IAsyncDisposable
+{
+    IAsyncEnumerable<IArchiveEntry> EntriesAsync { get; }
+    IAsyncEnumerable<IVolume> VolumesAsync { get; }
+
+    ArchiveType Type { get; }
+
+    /// <summary>
+    /// Use this method to extract all entries in an archive in order.
+    /// This is primarily for SOLID Rar Archives or 7Zip Archives as they need to be
+    /// extracted sequentially for the best performance.
+    /// </summary>
+    ValueTask<IAsyncReader> ExtractAllEntriesAsync();
+
+    /// <summary>
+    /// Archive is SOLID (this means the Archive saved bytes by reusing information which helps for archives containing many small files).
+    /// Rar Archives can be SOLID while all 7Zip archives are considered SOLID.
+    /// </summary>
+    ValueTask<bool> IsSolidAsync();
+
+    /// <summary>
+    /// This checks to see if all the known entries have IsComplete = true
+    /// </summary>
+    ValueTask<bool> IsCompleteAsync();
+
+    /// <summary>
+    /// The total size of the files compressed in the archive.
+    /// </summary>
+    ValueTask<long> TotalSizeAsync();
+
+    /// <summary>
+    /// The total size of the files as uncompressed in the archive.
+    /// </summary>
+    ValueTask<long> TotalUncompressSizeAsync();
+}

src/SharpCompress/Archives/IAsyncArchiveExtensions.cs

@@ -0,0 +1,93 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using SharpCompress.Common;
+using SharpCompress.Readers;
+
+namespace SharpCompress.Archives;
+
+public static class IAsyncArchiveExtensions
+{
+    /// <summary>
+    /// Extract to specific directory asynchronously with progress reporting and cancellation support
+    /// </summary>
+    /// <param name="archive">The archive to extract.</param>
+    /// <param name="destinationDirectory">The folder to extract into.</param>
+    /// <param name="options">Extraction options.</param>
+    /// <param name="progress">Optional progress reporter for tracking extraction progress.</param>
+    /// <param name="cancellationToken">Optional cancellation token.</param>
+    public static async Task WriteToDirectoryAsync(
+        this IAsyncArchive archive,
+        string destinationDirectory,
+        ExtractionOptions? options = null,
+        IProgress<ProgressReport>? progress = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        // For solid archives (Rar, 7Zip), use the optimized reader-based approach
+        if (await archive.IsSolidAsync() || archive.Type == ArchiveType.SevenZip)
+        {
+            await using var reader = await archive.ExtractAllEntriesAsync();
+            await reader.WriteAllToDirectoryAsync(destinationDirectory, options, cancellationToken);
+        }
+        else
+        {
+            // For non-solid archives, extract entries directly
+            await archive.WriteToDirectoryAsyncInternal(
+                destinationDirectory,
+                options,
+                progress,
+                cancellationToken
+            );
+        }
+    }
+
+    private static async Task WriteToDirectoryAsyncInternal(
+        this IAsyncArchive archive,
+        string destinationDirectory,
+        ExtractionOptions? options,
+        IProgress<ProgressReport>? progress,
+        CancellationToken cancellationToken
+    )
+    {
+        // Prepare for progress reporting
+        var totalBytes = await archive.TotalUncompressSizeAsync();
+        var bytesRead = 0L;
+
+        // Tracking for created directories.
+        var seenDirectories = new HashSet<string>();
+
+        // Extract
+        await foreach (var entry in archive.EntriesAsync.WithCancellation(cancellationToken))
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            if (entry.IsDirectory)
+            {
+                var dirPath = Path.Combine(
+                    destinationDirectory,
+                    entry.Key.NotNull("Entry Key is null")
+                );
+                if (
+                    Path.GetDirectoryName(dirPath + "/") is { } parentDirectory
+                    && seenDirectories.Add(dirPath)
+                )
+                {
+                    Directory.CreateDirectory(parentDirectory);
+                }
+                continue;
+            }
+
+            // Use the entry's WriteToDirectoryAsync method which respects ExtractionOptions
+            await entry
+                .WriteToDirectoryAsync(destinationDirectory, options, cancellationToken)
+                .ConfigureAwait(false);
+
+            // Update progress
+            bytesRead += entry.Size;
+            progress?.Report(new ProgressReport(entry.Key ?? string.Empty, bytesRead, totalBytes));
+        }
+    }
+}

src/SharpCompress/Archives/IMultiArchiveFactory.cs

@@ -1,5 +1,7 @@
 using System.Collections.Generic;
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Factories;
 using SharpCompress.Readers;
 
@@ -27,10 +29,34 @@ public interface IMultiArchiveFactory : IFactory
     /// <param name="readerOptions">reading options.</param>
     IArchive Open(IReadOnlyList<Stream> streams, ReaderOptions? readerOptions = null);
 
+    /// <summary>
+    /// Opens a multi-part archive from streams asynchronously.
+    /// </summary>
+    /// <param name="streams"></param>
+    /// <param name="readerOptions">reading options.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<Stream> streams,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    );
+
     /// <summary>
     /// Constructor with IEnumerable Stream objects, multi and split support.
     /// </summary>
     /// <param name="fileInfos"></param>
     /// <param name="readerOptions">reading options.</param>
     IArchive Open(IReadOnlyList<FileInfo> fileInfos, ReaderOptions? readerOptions = null);
+
+    /// <summary>
+    /// Opens a multi-part archive from files asynchronously.
+    /// </summary>
+    /// <param name="fileInfos"></param>
+    /// <param name="readerOptions">reading options.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<FileInfo> fileInfos,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    );
 }

src/SharpCompress/Archives/IWritableArchive.cs

@@ -22,7 +22,7 @@ public interface IWritableArchive : IArchive
 
     void SaveTo(Stream stream, WriterOptions options);
 
-    Task SaveToAsync(
+    ValueTask SaveToAsync(
         Stream stream,
         WriterOptions options,
         CancellationToken cancellationToken = default

src/SharpCompress/Archives/IWritableArchiveExtensions.cs

@@ -44,14 +44,14 @@ public static class IWritableArchiveExtensions
         writableArchive.SaveTo(stream, options);
     }
 
-    public static Task SaveToAsync(
+    public static ValueTask SaveToAsync(
         this IWritableArchive writableArchive,
         string filePath,
         WriterOptions options,
         CancellationToken cancellationToken = default
     ) => writableArchive.SaveToAsync(new FileInfo(filePath), options, cancellationToken);
 
-    public static async Task SaveToAsync(
+    public static async ValueTask SaveToAsync(
         this IWritableArchive writableArchive,
         FileInfo fileInfo,
         WriterOptions options,

src/SharpCompress/Archives/Rar/RarArchive.cs

@@ -2,6 +2,8 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Common;
 using SharpCompress.Common.Rar;
 using SharpCompress.Common.Rar.Headers;
@@ -65,7 +67,13 @@ public class RarArchive : AbstractArchive<RarArchiveEntry, RarVolume>
         return new StreamRarArchiveVolume(sourceStream, ReaderOptions, i++).AsEnumerable();
     }
 
-    protected override IReader CreateReaderForSolidExtraction()
+    protected override IReader CreateReaderForSolidExtraction() =>
+        CreateReaderForSolidExtractionInternal();
+
+    protected override ValueTask<IAsyncReader> CreateReaderForSolidExtractionAsync() =>
+        new(CreateReaderForSolidExtractionInternal());
+
+    private RarReader CreateReaderForSolidExtractionInternal()
     {
         if (this.IsMultipartVolume())
         {
@@ -181,6 +189,70 @@ public class RarArchive : AbstractArchive<RarArchiveEntry, RarVolume>
         );
     }
 
+    /// <summary>
+    /// Opens a RarArchive asynchronously from a stream.
+    /// </summary>
+    /// <param name="stream"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        Stream stream,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(stream, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a RarArchive asynchronously from a FileInfo.
+    /// </summary>
+    /// <param name="fileInfo"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        FileInfo fileInfo,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfo, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a RarArchive asynchronously from multiple streams.
+    /// </summary>
+    /// <param name="streams"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<Stream> streams,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(streams, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a RarArchive asynchronously from multiple FileInfo objects.
+    /// </summary>
+    /// <param name="fileInfos"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<FileInfo> fileInfos,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfos, readerOptions));
+    }
+
     public static bool IsRarFile(string filePath) => IsRarFile(new FileInfo(filePath));
 
     public static bool IsRarFile(FileInfo fileInfo)

src/SharpCompress/Archives/Rar/RarArchiveEntry.cs

@@ -76,7 +76,7 @@ public class RarArchiveEntry : RarEntry, IArchiveEntry
             stream = new RarStream(
                 archive.UnpackV1.Value,
                 FileHeader,
-                new MultiVolumeReadOnlyStream(Parts.Cast<RarFilePart>(), archive)
+                new MultiVolumeReadOnlyStream(Parts.Cast<RarFilePart>())
             );
         }
         else
@@ -84,7 +84,7 @@ public class RarArchiveEntry : RarEntry, IArchiveEntry
             stream = new RarStream(
                 archive.UnpackV2017.Value,
                 FileHeader,
-                new MultiVolumeReadOnlyStream(Parts.Cast<RarFilePart>(), archive)
+                new MultiVolumeReadOnlyStream(Parts.Cast<RarFilePart>())
             );
         }
 
@@ -92,7 +92,9 @@ public class RarArchiveEntry : RarEntry, IArchiveEntry
         return stream;
     }
 
-    public async Task<Stream> OpenEntryStreamAsync(CancellationToken cancellationToken = default)
+    public async ValueTask<Stream> OpenEntryStreamAsync(
+        CancellationToken cancellationToken = default
+    )
     {
         RarStream stream;
         if (IsRarV3)
@@ -100,7 +102,7 @@ public class RarArchiveEntry : RarEntry, IArchiveEntry
             stream = new RarStream(
                 archive.UnpackV1.Value,
                 FileHeader,
-                new MultiVolumeReadOnlyStream(Parts.Cast<RarFilePart>(), archive)
+                new MultiVolumeReadOnlyStream(Parts.Cast<RarFilePart>())
             );
         }
         else
@@ -108,7 +110,7 @@ public class RarArchiveEntry : RarEntry, IArchiveEntry
             stream = new RarStream(
                 archive.UnpackV2017.Value,
                 FileHeader,
-                new MultiVolumeReadOnlyStream(Parts.Cast<RarFilePart>(), archive)
+                new MultiVolumeReadOnlyStream(Parts.Cast<RarFilePart>())
             );
         }
 

src/SharpCompress/Archives/SevenZip/SevenZipArchive.cs

@@ -2,6 +2,8 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Common;
 using SharpCompress.Common.SevenZip;
 using SharpCompress.Compressors.LZMA.Utilites;
@@ -103,6 +105,70 @@ public class SevenZipArchive : AbstractArchive<SevenZipArchiveEntry, SevenZipVol
         );
     }
 
+    /// <summary>
+    /// Opens a SevenZipArchive asynchronously from a stream.
+    /// </summary>
+    /// <param name="stream"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        Stream stream,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(stream, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a SevenZipArchive asynchronously from a FileInfo.
+    /// </summary>
+    /// <param name="fileInfo"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        FileInfo fileInfo,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfo, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a SevenZipArchive asynchronously from multiple streams.
+    /// </summary>
+    /// <param name="streams"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<Stream> streams,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(streams, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a SevenZipArchive asynchronously from multiple FileInfo objects.
+    /// </summary>
+    /// <param name="fileInfos"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<FileInfo> fileInfos,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfos, readerOptions));
+    }
+
     /// <summary>
     /// Constructor with a SourceStream able to handle FileInfo and Streams.
     /// </summary>
@@ -199,6 +265,9 @@ public class SevenZipArchive : AbstractArchive<SevenZipArchiveEntry, SevenZipVol
     protected override IReader CreateReaderForSolidExtraction() =>
         new SevenZipReader(ReaderOptions, this);
 
+    protected override ValueTask<IAsyncReader> CreateReaderForSolidExtractionAsync() =>
+        new(new SevenZipReader(ReaderOptions, this));
+
     public override bool IsSolid =>
         Entries
             .Where(x => !x.IsDirectory)
@@ -213,9 +282,7 @@ public class SevenZipArchive : AbstractArchive<SevenZipArchiveEntry, SevenZipVol
     private sealed class SevenZipReader : AbstractReader<SevenZipEntry, SevenZipVolume>
     {
         private readonly SevenZipArchive _archive;
-        private CFolder? _currentFolder;
-        private Stream? _currentStream;
-        private CFileItem? _currentItem;
+        private SevenZipEntry? _currentEntry;
 
         internal SevenZipReader(ReaderOptions readerOptions, SevenZipArchive archive)
             : base(readerOptions, ArchiveType.SevenZip) => this._archive = archive;
@@ -228,40 +295,135 @@ public class SevenZipArchive : AbstractArchive<SevenZipArchiveEntry, SevenZipVol
             stream.Position = 0;
             foreach (var dir in entries.Where(x => x.IsDirectory))
             {
+                _currentEntry = dir;
                 yield return dir;
             }
-            foreach (
-                var group in entries.Where(x => !x.IsDirectory).GroupBy(x => x.FilePart.Folder)
-            )
+            // For non-directory entries, yield them without creating shared streams
+            // Each call to GetEntryStream() will create a fresh decompression stream
+            // to avoid state corruption issues with async operations
+            foreach (var entry in entries.Where(x => !x.IsDirectory))
             {
-                _currentFolder = group.Key;
-                if (group.Key is null)
-                {
-                    _currentStream = Stream.Null;
-                }
-                else
-                {
-                    _currentStream = _archive._database?.GetFolderStream(
-                        stream,
-                        _currentFolder,
-                        new PasswordProvider(Options.Password)
-                    );
-                }
-                foreach (var entry in group)
-                {
-                    _currentItem = entry.FilePart.Header;
-                    yield return entry;
-                }
+                _currentEntry = entry;
+                yield return entry;
             }
         }
 
-        protected override EntryStream GetEntryStream() =>
-            CreateEntryStream(
-                new ReadOnlySubStream(
-                    _currentStream.NotNull("currentStream is not null"),
-                    _currentItem?.Size ?? 0
-                )
-            );
+        protected override EntryStream GetEntryStream()
+        {
+            // Create a fresh decompression stream for each file (no state sharing).
+            // However, the LZMA decoder has bugs in its async implementation that cause
+            // state corruption even on fresh streams. The SyncOnlyStream wrapper
+            // works around these bugs by forcing async operations to use sync equivalents.
+            //
+            // TODO: Fix the LZMA decoder async bugs (in LzmaStream, Decoder, OutWindow)
+            // so this wrapper is no longer necessary.
+            var entry = _currentEntry.NotNull("currentEntry is not null");
+            if (entry.IsDirectory)
+            {
+                return CreateEntryStream(Stream.Null);
+            }
+            return CreateEntryStream(new SyncOnlyStream(entry.FilePart.GetCompressedStream()));
+        }
+    }
+
+    /// <summary>
+    /// WORKAROUND: Forces async operations to use synchronous equivalents.
+    /// This is necessary because the LZMA decoder has bugs in its async implementation
+    /// that cause state corruption (IndexOutOfRangeException, DataErrorException).
+    ///
+    /// The proper fix would be to repair the LZMA decoder's async methods
+    /// (LzmaStream.ReadAsync, Decoder.CodeAsync, OutWindow async operations),
+    /// but that requires deep changes to the decoder state machine.
+    /// </summary>
+    private sealed class SyncOnlyStream : Stream
+    {
+        private readonly Stream _baseStream;
+
+        public SyncOnlyStream(Stream baseStream) => _baseStream = baseStream;
+
+        public override bool CanRead => _baseStream.CanRead;
+        public override bool CanSeek => _baseStream.CanSeek;
+        public override bool CanWrite => _baseStream.CanWrite;
+        public override long Length => _baseStream.Length;
+        public override long Position
+        {
+            get => _baseStream.Position;
+            set => _baseStream.Position = value;
+        }
+
+        public override void Flush() => _baseStream.Flush();
+
+        public override int Read(byte[] buffer, int offset, int count) =>
+            _baseStream.Read(buffer, offset, count);
+
+        public override long Seek(long offset, SeekOrigin origin) =>
+            _baseStream.Seek(offset, origin);
+
+        public override void SetLength(long value) => _baseStream.SetLength(value);
+
+        public override void Write(byte[] buffer, int offset, int count) =>
+            _baseStream.Write(buffer, offset, count);
+
+        // Force async operations to use sync equivalents to avoid LZMA decoder bugs
+        public override Task<int> ReadAsync(
+            byte[] buffer,
+            int offset,
+            int count,
+            CancellationToken cancellationToken
+        )
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            return Task.FromResult(_baseStream.Read(buffer, offset, count));
+        }
+
+        public override Task WriteAsync(
+            byte[] buffer,
+            int offset,
+            int count,
+            CancellationToken cancellationToken
+        )
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            _baseStream.Write(buffer, offset, count);
+            return Task.CompletedTask;
+        }
+
+        public override Task FlushAsync(CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            _baseStream.Flush();
+            return Task.CompletedTask;
+        }
+
+#if !NETFRAMEWORK && !NETSTANDARD2_0
+        public override ValueTask<int> ReadAsync(
+            Memory<byte> buffer,
+            CancellationToken cancellationToken = default
+        )
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            return new ValueTask<int>(_baseStream.Read(buffer.Span));
+        }
+
+        public override ValueTask WriteAsync(
+            ReadOnlyMemory<byte> buffer,
+            CancellationToken cancellationToken = default
+        )
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            _baseStream.Write(buffer.Span);
+            return ValueTask.CompletedTask;
+        }
+#endif
+
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _baseStream.Dispose();
+            }
+            base.Dispose(disposing);
+        }
     }
 
     private class PasswordProvider : IPasswordProvider

src/SharpCompress/Archives/SevenZip/SevenZipArchiveEntry.cs

@@ -12,8 +12,9 @@ public class SevenZipArchiveEntry : SevenZipEntry, IArchiveEntry
 
     public Stream OpenEntryStream() => FilePart.GetCompressedStream();
 
-    public Task<Stream> OpenEntryStreamAsync(CancellationToken cancellationToken = default) =>
-        Task.FromResult(OpenEntryStream());
+    public async ValueTask<Stream> OpenEntryStreamAsync(
+        CancellationToken cancellationToken = default
+    ) => OpenEntryStream();
 
     public IArchive Archive { get; }
 

src/SharpCompress/Archives/Tar/TarArchive.cs

@@ -103,6 +103,70 @@ public class TarArchive : AbstractWritableArchive<TarArchiveEntry, TarVolume>
         );
     }
 
+    /// <summary>
+    /// Opens a TarArchive asynchronously from a stream.
+    /// </summary>
+    /// <param name="stream"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        Stream stream,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(stream, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a TarArchive asynchronously from a FileInfo.
+    /// </summary>
+    /// <param name="fileInfo"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        FileInfo fileInfo,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfo, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a TarArchive asynchronously from multiple streams.
+    /// </summary>
+    /// <param name="streams"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<Stream> streams,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(streams, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a TarArchive asynchronously from multiple FileInfo objects.
+    /// </summary>
+    /// <param name="fileInfos"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<FileInfo> fileInfos,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfos, readerOptions));
+    }
+
     public static bool IsTarFile(string filePath) => IsTarFile(new FileInfo(filePath));
 
     public static bool IsTarFile(FileInfo fileInfo)
@@ -259,7 +323,7 @@ public class TarArchive : AbstractWritableArchive<TarArchiveEntry, TarVolume>
         }
     }
 
-    protected override async Task SaveToAsync(
+    protected override async ValueTask SaveToAsync(
         Stream stream,
         WriterOptions options,
         IEnumerable<TarArchiveEntry> oldEntries,
@@ -302,4 +366,11 @@ public class TarArchive : AbstractWritableArchive<TarArchiveEntry, TarVolume>
         stream.Position = 0;
         return TarReader.Open(stream);
     }
+
+    protected override ValueTask<IAsyncReader> CreateReaderForSolidExtractionAsync()
+    {
+        var stream = Volumes.Single().Stream;
+        stream.Position = 0;
+        return new(TarReader.Open(stream));
+    }
 }

src/SharpCompress/Archives/Tar/TarArchiveEntry.cs

@@ -14,9 +14,9 @@ public class TarArchiveEntry : TarEntry, IArchiveEntry
 
     public virtual Stream OpenEntryStream() => Parts.Single().GetCompressedStream().NotNull();
 
-    public virtual Task<Stream> OpenEntryStreamAsync(
+    public async ValueTask<Stream> OpenEntryStreamAsync(
         CancellationToken cancellationToken = default
-    ) => Task.FromResult(OpenEntryStream());
+    ) => OpenEntryStream();
 
     #region IArchiveEntry Members
 

src/SharpCompress/Archives/Zip/ZipArchive.cs

@@ -124,6 +124,70 @@ public class ZipArchive : AbstractWritableArchive<ZipArchiveEntry, ZipVolume>
         );
     }
 
+    /// <summary>
+    /// Opens a ZipArchive asynchronously from a stream.
+    /// </summary>
+    /// <param name="stream"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        Stream stream,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(stream, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a ZipArchive asynchronously from a FileInfo.
+    /// </summary>
+    /// <param name="fileInfo"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        FileInfo fileInfo,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfo, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a ZipArchive asynchronously from multiple streams.
+    /// </summary>
+    /// <param name="streams"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<Stream> streams,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(streams, readerOptions));
+    }
+
+    /// <summary>
+    /// Opens a ZipArchive asynchronously from multiple FileInfo objects.
+    /// </summary>
+    /// <param name="fileInfos"></param>
+    /// <param name="readerOptions"></param>
+    /// <param name="cancellationToken"></param>
+    public static ValueTask<IAsyncArchive> OpenAsync(
+        IReadOnlyList<FileInfo> fileInfos,
+        ReaderOptions? readerOptions = null,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        return new(Open(fileInfos, readerOptions));
+    }
+
     public static bool IsZipFile(
         string filePath,
         string? password = null,
@@ -199,7 +263,95 @@ public class ZipArchive : AbstractWritableArchive<ZipArchiveEntry, ZipVolume>
                 if (stream.CanSeek) //could be multipart. Test for central directory - might not be z64 safe
                 {
                     var z = new SeekableZipHeaderFactory(password, new ArchiveEncoding());
-                    var x = z.ReadSeekableHeader(stream).FirstOrDefault();
+                    var x = z.ReadSeekableHeader(stream, useSync: true).FirstOrDefault();
+                    return x?.ZipHeaderType == ZipHeaderType.DirectoryEntry;
+                }
+                else
+                {
+                    return false;
+                }
+            }
+            return Enum.IsDefined(typeof(ZipHeaderType), header.ZipHeaderType);
+        }
+        catch (CryptographicException)
+        {
+            return true;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    public static async ValueTask<bool> IsZipFileAsync(
+        Stream stream,
+        string? password = null,
+        int bufferSize = ReaderOptions.DefaultBufferSize,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        var headerFactory = new StreamingZipHeaderFactory(password, new ArchiveEncoding(), null);
+        try
+        {
+            if (stream is not SharpCompressStream)
+            {
+                stream = new SharpCompressStream(stream, bufferSize: bufferSize);
+            }
+
+            var header = await headerFactory
+                .ReadStreamHeaderAsync(stream)
+                .Where(x => x.ZipHeaderType != ZipHeaderType.Split)
+                .FirstOrDefaultAsync();
+            if (header is null)
+            {
+                return false;
+            }
+            return Enum.IsDefined(typeof(ZipHeaderType), header.ZipHeaderType);
+        }
+        catch (CryptographicException)
+        {
+            return true;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    public static async ValueTask<bool> IsZipMultiAsync(
+        Stream stream,
+        string? password = null,
+        int bufferSize = ReaderOptions.DefaultBufferSize,
+        CancellationToken cancellationToken = default
+    )
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        var headerFactory = new StreamingZipHeaderFactory(password, new ArchiveEncoding(), null);
+        try
+        {
+            if (stream is not SharpCompressStream)
+            {
+                stream = new SharpCompressStream(stream, bufferSize: bufferSize);
+            }
+
+            var header = headerFactory
+                .ReadStreamHeader(stream)
+                .FirstOrDefault(x => x.ZipHeaderType != ZipHeaderType.Split);
+            if (header is null)
+            {
+                if (stream.CanSeek) //could be multipart. Test for central directory - might not be z64 safe
+                {
+                    var z = new SeekableZipHeaderFactory(password, new ArchiveEncoding());
+                    ZipHeader? x = null;
+                    await foreach (
+                        var h in z.ReadSeekableHeaderAsync(stream)
+                            .WithCancellation(cancellationToken)
+                    )
+                    {
+                        x = h;
+                        break;
+                    }
                     return x?.ZipHeaderType == ZipHeaderType.DirectoryEntry;
                 }
                 else
@@ -254,7 +406,9 @@ public class ZipArchive : AbstractWritableArchive<ZipArchiveEntry, ZipVolume>
     protected override IEnumerable<ZipArchiveEntry> LoadEntries(IEnumerable<ZipVolume> volumes)
     {
         var vols = volumes.ToArray();
-        foreach (var h in headerFactory.NotNull().ReadSeekableHeader(vols.Last().Stream))
+        foreach (
+            var h in headerFactory.NotNull().ReadSeekableHeader(vols.Last().Stream, useSync: true)
+        )
         {
             if (h != null)
             {
@@ -298,6 +452,59 @@ public class ZipArchive : AbstractWritableArchive<ZipArchiveEntry, ZipVolume>
         }
     }
 
+    protected override async IAsyncEnumerable<ZipArchiveEntry> LoadEntriesAsync(
+        IAsyncEnumerable<ZipVolume> volumes
+    )
+    {
+        var vols = await volumes.ToListAsync();
+        var volsArray = vols.ToArray();
+
+        await foreach (
+            var h in headerFactory.NotNull().ReadSeekableHeaderAsync(volsArray.Last().Stream)
+        )
+        {
+            if (h != null)
+            {
+                switch (h.ZipHeaderType)
+                {
+                    case ZipHeaderType.DirectoryEntry:
+                        {
+                            var deh = (DirectoryEntryHeader)h;
+                            Stream s;
+                            if (
+                                deh.RelativeOffsetOfEntryHeader + deh.CompressedSize
+                                > volsArray[deh.DiskNumberStart].Stream.Length
+                            )
+                            {
+                                var v = volsArray.Skip(deh.DiskNumberStart).ToArray();
+                                s = new SourceStream(
+                                    v[0].Stream,
+                                    i => i < v.Length ? v[i].Stream : null,
+                                    new ReaderOptions() { LeaveStreamOpen = true }
+                                );
+                            }
+                            else
+                            {
+                                s = volsArray[deh.DiskNumberStart].Stream;
+                            }
+
+                            yield return new ZipArchiveEntry(
+                                this,
+                                new SeekableZipFilePart(headerFactory.NotNull(), deh, s)
+                            );
+                        }
+                        break;
+                    case ZipHeaderType.DirectoryEnd:
+                    {
+                        var bytes = ((DirectoryEndHeader)h).Comment ?? Array.Empty<byte>();
+                        volsArray.Last().Comment = ReaderOptions.ArchiveEncoding.Decode(bytes);
+                        yield break;
+                    }
+                }
+            }
+        }
+    }
+
     public void SaveTo(Stream stream) => SaveTo(stream, new WriterOptions(CompressionType.Deflate));
 
     protected override void SaveTo(
@@ -329,7 +536,7 @@ public class ZipArchive : AbstractWritableArchive<ZipArchiveEntry, ZipVolume>
         }
     }
 
-    protected override async Task SaveToAsync(
+    protected override async ValueTask SaveToAsync(
         Stream stream,
         WriterOptions options,
         IEnumerable<ZipArchiveEntry> oldEntries,
@@ -385,4 +592,11 @@ public class ZipArchive : AbstractWritableArchive<ZipArchiveEntry, ZipVolume>
         ((IStreamStack)stream).StackSeek(0);
         return ZipReader.Open(stream, ReaderOptions, Entries);
     }
+
+    protected override ValueTask<IAsyncReader> CreateReaderForSolidExtractionAsync()
+    {
+        var stream = Volumes.Single().Stream;
+        stream.Position = 0;
+        return new(ZipReader.Open(stream));
+    }
 }

src/SharpCompress/Archives/Zip/ZipArchiveEntry.cs

@@ -13,9 +13,17 @@ public class ZipArchiveEntry : ZipEntry, IArchiveEntry
 
     public virtual Stream OpenEntryStream() => Parts.Single().GetCompressedStream().NotNull();
 
-    public virtual Task<Stream> OpenEntryStreamAsync(
+    public async ValueTask<Stream> OpenEntryStreamAsync(
         CancellationToken cancellationToken = default
-    ) => Task.FromResult(OpenEntryStream());
+    )
+    {
+        var part = Parts.Single();
+        if (part is SeekableZipFilePart seekablePart)
+        {
+            return (await seekablePart.GetCompressedStreamAsync(cancellationToken)).NotNull();
+        }
+        return OpenEntryStream();
+    }
 
     #region IArchiveEntry Members
 

src/SharpCompress/AssemblyInfo.cs

@@ -1,7 +1,8 @@
 using System;
 using System.Runtime.CompilerServices;
 
-[assembly: CLSCompliant(true)]
+// CLSCompliant(false) is required because ZStandard integration uses unsafe code
+[assembly: CLSCompliant(false)]
 [assembly: InternalsVisibleTo(
     "SharpCompress.Test,PublicKey=0024000004800000940000000602000000240000525341310004000001000100158bebf1433f76dffc356733c138babea7a47536c65ed8009b16372c6f4edbb20554db74a62687f56b97c20a6ce8c4b123280279e33c894e7b3aa93ab3c573656fde4db576cfe07dba09619ead26375b25d2c4a8e43f7be257d712b0dd2eb546f67adb09281338618a58ac834fc038dd7e2740a7ab3591826252e4f4516306dc"
 )]

src/SharpCompress/Common/Ace/AceCrc.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SharpCompress.Common.Ace
+{
+    public class AceCrc
+    {
+        // CRC-32 lookup table (standard polynomial 0xEDB88320, reflected)
+        private static readonly uint[] Crc32Table = GenerateTable();
+
+        private static uint[] GenerateTable()
+        {
+            var table = new uint[256];
+
+            for (int i = 0; i < 256; i++)
+            {
+                uint crc = (uint)i;
+
+                for (int j = 0; j < 8; j++)
+                {
+                    if ((crc & 1) != 0)
+                        crc = (crc >> 1) ^ 0xEDB88320u;
+                    else
+                        crc >>= 1;
+                }
+
+                table[i] = crc;
+            }
+
+            return table;
+        }
+
+        /// <summary>
+        /// Calculate ACE CRC-32 checksum.
+        /// ACE CRC-32 uses standard CRC-32 polynomial (0xEDB88320, reflected)
+        /// with init=0xFFFFFFFF but NO final XOR.
+        /// </summary>
+        public static uint AceCrc32(ReadOnlySpan<byte> data)
+        {
+            uint crc = 0xFFFFFFFFu;
+
+            foreach (byte b in data)
+            {
+                crc = (crc >> 8) ^ Crc32Table[(crc ^ b) & 0xFF];
+            }
+
+            return crc; // No final XOR for ACE
+        }
+
+        /// <summary>
+        /// ACE CRC-16 is the lower 16 bits of the ACE CRC-32.
+        /// </summary>
+        public static ushort AceCrc16(ReadOnlySpan<byte> data)
+        {
+            return (ushort)(AceCrc32(data) & 0xFFFF);
+        }
+    }
+}

src/SharpCompress/Common/Ace/AceEntry.cs

@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SharpCompress.Common.Ace.Headers;
+
+namespace SharpCompress.Common.Ace
+{
+    public class AceEntry : Entry
+    {
+        private readonly AceFilePart _filePart;
+
+        internal AceEntry(AceFilePart filePart)
+        {
+            _filePart = filePart;
+        }
+
+        public override long Crc
+        {
+            get
+            {
+                if (_filePart == null)
+                {
+                    return 0;
+                }
+                return _filePart.Header.Crc32;
+            }
+        }
+
+        public override string? Key => _filePart?.Header.Filename;
+
+        public override string? LinkTarget => null;
+
+        public override long CompressedSize => _filePart?.Header.PackedSize ?? 0;
+
+        public override CompressionType CompressionType
+        {
+            get
+            {
+                if (_filePart.Header.CompressionType == Headers.CompressionType.Stored)
+                {
+                    return CompressionType.None;
+                }
+                return CompressionType.AceLZ77;
+            }
+        }
+
+        public override long Size => _filePart?.Header.OriginalSize ?? 0;
+
+        public override DateTime? LastModifiedTime => _filePart.Header.DateTime;
+
+        public override DateTime? CreatedTime => null;
+
+        public override DateTime? LastAccessedTime => null;
+
+        public override DateTime? ArchivedTime => null;
+
+        public override bool IsEncrypted => _filePart.Header.IsFileEncrypted;
+
+        public override bool IsDirectory => _filePart.Header.IsDirectory;
+
+        public override bool IsSplitAfter => false;
+
+        internal override IEnumerable<FilePart> Parts => _filePart.Empty();
+    }
+}

src/SharpCompress/Common/Ace/AceFilePart.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SharpCompress.Common.Ace.Headers;
+using SharpCompress.IO;
+
+namespace SharpCompress.Common.Ace
+{
+    public class AceFilePart : FilePart
+    {
+        private readonly Stream _stream;
+        internal AceFileHeader Header { get; set; }
+
+        internal AceFilePart(AceFileHeader localAceHeader, Stream seekableStream)
+            : base(localAceHeader.ArchiveEncoding)
+        {
+            _stream = seekableStream;
+            Header = localAceHeader;
+        }
+
+        internal override string? FilePartName => Header.Filename;
+
+        internal override Stream GetCompressedStream()
+        {
+            if (_stream != null)
+            {
+                Stream compressedStream;
+                switch (Header.CompressionType)
+                {
+                    case Headers.CompressionType.Stored:
+                        compressedStream = new ReadOnlySubStream(
+                            _stream,
+                            Header.DataStartPosition,
+                            Header.PackedSize
+                        );
+                        break;
+                    default:
+                        throw new NotSupportedException(
+                            "CompressionMethod: " + Header.CompressionQuality
+                        );
+                }
+                return compressedStream;
+            }
+            return _stream.NotNull();
+        }
+
+        internal override Stream? GetRawStream() => _stream;
+    }
+}

src/SharpCompress/Common/Ace/AceVolume.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SharpCompress.Common.Arj;
+using SharpCompress.Readers;
+
+namespace SharpCompress.Common.Ace
+{
+    public class AceVolume : Volume
+    {
+        public AceVolume(Stream stream, ReaderOptions readerOptions, int index = 0)
+            : base(stream, readerOptions, index) { }
+
+        public override bool IsFirstVolume
+        {
+            get { return true; }
+        }
+
+        /// <summary>
+        /// ArjArchive is part of a multi-part archive.
+        /// </summary>
+        public override bool IsMultiVolume
+        {
+            get { return false; }
+        }
+
+        internal IEnumerable<AceFilePart> GetVolumeFileParts()
+        {
+            return new List<AceFilePart>();
+        }
+    }
+}

src/SharpCompress/Common/Ace/Headers/AceFileHeader.cs

@@ -0,0 +1,171 @@
+using System;
+using System.Buffers.Binary;
+using System.Collections.Generic;
+using System.IO;
+using System.Xml.Linq;
+using SharpCompress.Common.Arc;
+
+namespace SharpCompress.Common.Ace.Headers
+{
+    /// <summary>
+    /// ACE file entry header
+    /// </summary>
+    public sealed class AceFileHeader : AceHeader
+    {
+        public long DataStartPosition { get; private set; }
+        public long PackedSize { get; set; }
+        public long OriginalSize { get; set; }
+        public DateTime DateTime { get; set; }
+        public int Attributes { get; set; }
+        public uint Crc32 { get; set; }
+        public CompressionType CompressionType { get; set; }
+        public CompressionQuality CompressionQuality { get; set; }
+        public ushort Parameters { get; set; }
+        public string Filename { get; set; } = string.Empty;
+        public List<byte> Comment { get; set; } = new();
+
+        /// <summary>
+        /// File data offset in the archive
+        /// </summary>
+        public ulong DataOffset { get; set; }
+
+        public bool IsDirectory => (Attributes & 0x10) != 0;
+
+        public bool IsContinuedFromPrev =>
+            (HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.CONTINUED_PREV) != 0;
+
+        public bool IsContinuedToNext =>
+            (HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.CONTINUED_NEXT) != 0;
+
+        public int DictionarySize
+        {
+            get
+            {
+                int bits = Parameters & 0x0F;
+                return bits < 10 ? 1024 : 1 << bits;
+            }
+        }
+
+        public AceFileHeader(IArchiveEncoding archiveEncoding)
+            : base(archiveEncoding, AceHeaderType.FILE) { }
+
+        /// <summary>
+        /// Reads the next file entry header from the stream.
+        /// Returns null if no more entries or end of archive.
+        /// Supports both ACE 1.0 and ACE 2.0 formats.
+        /// </summary>
+        public override AceHeader? Read(Stream stream)
+        {
+            var headerData = ReadHeader(stream);
+            if (headerData.Length == 0)
+            {
+                return null;
+            }
+            int offset = 0;
+
+            // Header type (1 byte)
+            HeaderType = headerData[offset++];
+
+            // Skip recovery record headers (ACE 2.0 feature)
+            if (HeaderType == (byte)SharpCompress.Common.Ace.Headers.AceHeaderType.RECOVERY32)
+            {
+                // Skip to next header
+                return null;
+            }
+
+            if (HeaderType != (byte)SharpCompress.Common.Ace.Headers.AceHeaderType.FILE)
+            {
+                // Unknown header type - skip
+                return null;
+            }
+
+            // Header flags (2 bytes)
+            HeaderFlags = BitConverter.ToUInt16(headerData, offset);
+            offset += 2;
+
+            // Packed size (4 bytes)
+            PackedSize = BitConverter.ToUInt32(headerData, offset);
+            offset += 4;
+
+            // Original size (4 bytes)
+            OriginalSize = BitConverter.ToUInt32(headerData, offset);
+            offset += 4;
+
+            // File date/time in DOS format (4 bytes)
+            var dosDateTime = BitConverter.ToUInt32(headerData, offset);
+            DateTime = ConvertDosDateTime(dosDateTime);
+            offset += 4;
+
+            // File attributes (4 bytes)
+            Attributes = (int)BitConverter.ToUInt32(headerData, offset);
+            offset += 4;
+
+            // CRC32 (4 bytes)
+            Crc32 = BitConverter.ToUInt32(headerData, offset);
+            offset += 4;
+
+            // Compression type (1 byte)
+            byte compressionType = headerData[offset++];
+            CompressionType = GetCompressionType(compressionType);
+
+            // Compression quality/parameter (1 byte)
+            byte compressionQuality = headerData[offset++];
+            CompressionQuality = GetCompressionQuality(compressionQuality);
+
+            // Parameters (2 bytes)
+            Parameters = BitConverter.ToUInt16(headerData, offset);
+            offset += 2;
+
+            // Reserved (2 bytes) - skip
+            offset += 2;
+
+            // Filename length (2 bytes)
+            var filenameLength = BitConverter.ToUInt16(headerData, offset);
+            offset += 2;
+
+            // Filename
+            if (offset + filenameLength <= headerData.Length)
+            {
+                Filename = ArchiveEncoding.Decode(headerData, offset, filenameLength);
+                offset += filenameLength;
+            }
+
+            // Handle comment if present
+            if ((HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.COMMENT) != 0)
+            {
+                // Comment length (2 bytes)
+                if (offset + 2 <= headerData.Length)
+                {
+                    ushort commentLength = BitConverter.ToUInt16(headerData, offset);
+                    offset += 2 + commentLength; // Skip comment
+                }
+            }
+
+            // Store the data start position
+            DataStartPosition = stream.Position;
+
+            return this;
+        }
+
+        public CompressionType GetCompressionType(byte value) =>
+            value switch
+            {
+                0 => CompressionType.Stored,
+                1 => CompressionType.Lz77,
+                2 => CompressionType.Blocked,
+                _ => CompressionType.Unknown,
+            };
+
+        public CompressionQuality GetCompressionQuality(byte value) =>
+            value switch
+            {
+                0 => CompressionQuality.None,
+                1 => CompressionQuality.Fastest,
+                2 => CompressionQuality.Fast,
+                3 => CompressionQuality.Normal,
+                4 => CompressionQuality.Good,
+                5 => CompressionQuality.Best,
+                _ => CompressionQuality.Unknown,
+            };
+    }
+}

src/SharpCompress/Common/Ace/Headers/AceHeader.cs

@@ -0,0 +1,153 @@
+using System;
+using System.IO;
+using SharpCompress.Common.Arj.Headers;
+using SharpCompress.Crypto;
+
+namespace SharpCompress.Common.Ace.Headers
+{
+    /// <summary>
+    /// Header type constants
+    /// </summary>
+    public enum AceHeaderType
+    {
+        MAIN = 0,
+        FILE = 1,
+        RECOVERY32 = 2,
+        RECOVERY64A = 3,
+        RECOVERY64B = 4,
+    }
+
+    public abstract class AceHeader
+    {
+        // ACE signature: bytes at offset 7 should be "**ACE**"
+        private static readonly byte[] AceSignature =
+        [
+            (byte)'*',
+            (byte)'*',
+            (byte)'A',
+            (byte)'C',
+            (byte)'E',
+            (byte)'*',
+            (byte)'*',
+        ];
+
+        public AceHeader(IArchiveEncoding archiveEncoding, AceHeaderType type)
+        {
+            AceHeaderType = type;
+            ArchiveEncoding = archiveEncoding;
+        }
+
+        public IArchiveEncoding ArchiveEncoding { get; }
+        public AceHeaderType AceHeaderType { get; }
+
+        public ushort HeaderFlags { get; set; }
+        public ushort HeaderCrc { get; set; }
+        public ushort HeaderSize { get; set; }
+        public byte HeaderType { get; set; }
+
+        public bool IsFileEncrypted =>
+            (HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.FILE_ENCRYPTED) != 0;
+        public bool Is64Bit =>
+            (HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.MEMORY_64BIT) != 0;
+
+        public bool IsSolid =>
+            (HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.SOLID_MAIN) != 0;
+
+        public bool IsMultiVolume =>
+            (HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.MULTIVOLUME) != 0;
+
+        public abstract AceHeader? Read(Stream reader);
+
+        public byte[] ReadHeader(Stream stream)
+        {
+            // Read header CRC (2 bytes) and header size (2 bytes)
+            var headerBytes = new byte[4];
+            if (stream.Read(headerBytes, 0, 4) != 4)
+            {
+                return Array.Empty<byte>();
+            }
+
+            HeaderCrc = BitConverter.ToUInt16(headerBytes, 0); // CRC for validation
+            HeaderSize = BitConverter.ToUInt16(headerBytes, 2);
+            if (HeaderSize == 0)
+            {
+                return Array.Empty<byte>();
+            }
+
+            // Read the header data
+            var body = new byte[HeaderSize];
+            if (stream.Read(body, 0, HeaderSize) != HeaderSize)
+            {
+                return Array.Empty<byte>();
+            }
+
+            // Verify crc
+            var checksum = AceCrc.AceCrc16(body);
+            if (checksum != HeaderCrc)
+            {
+                throw new InvalidDataException("Header checksum is invalid");
+            }
+            return body;
+        }
+
+        public static bool IsArchive(Stream stream)
+        {
+            // ACE files have a specific signature
+            // First two bytes are typically 0x60 0xEA (signature bytes)
+            // At offset 7, there should be "**ACE**" (7 bytes)
+            var bytes = new byte[14];
+            if (stream.Read(bytes, 0, 14) != 14)
+            {
+                return false;
+            }
+
+            // Check for "**ACE**" at offset 7
+            return CheckMagicBytes(bytes, 7);
+        }
+
+        protected static bool CheckMagicBytes(byte[] headerBytes, int offset)
+        {
+            // Check for "**ACE**" at specified offset
+            for (int i = 0; i < AceSignature.Length; i++)
+            {
+                if (headerBytes[offset + i] != AceSignature[i])
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        protected DateTime ConvertDosDateTime(uint dosDateTime)
+        {
+            try
+            {
+                int second = (int)(dosDateTime & 0x1F) * 2;
+                int minute = (int)((dosDateTime >> 5) & 0x3F);
+                int hour = (int)((dosDateTime >> 11) & 0x1F);
+                int day = (int)((dosDateTime >> 16) & 0x1F);
+                int month = (int)((dosDateTime >> 21) & 0x0F);
+                int year = (int)((dosDateTime >> 25) & 0x7F) + 1980;
+
+                if (
+                    day < 1
+                    || day > 31
+                    || month < 1
+                    || month > 12
+                    || hour > 23
+                    || minute > 59
+                    || second > 59
+                )
+                {
+                    return DateTime.MinValue;
+                }
+
+                return new DateTime(year, month, day, hour, minute, second);
+            }
+            catch
+            {
+                return DateTime.MinValue;
+            }
+        }
+    }
+}

src/SharpCompress/Common/Ace/Headers/AceMainHeader.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Buffers.Binary;
+using System.Collections.Generic;
+using System.IO;
+using SharpCompress.Common.Ace.Headers;
+using SharpCompress.Common.Zip.Headers;
+using SharpCompress.Crypto;
+
+namespace SharpCompress.Common.Ace.Headers
+{
+    /// <summary>
+    /// ACE main archive header
+    /// </summary>
+    public sealed class AceMainHeader : AceHeader
+    {
+        public byte ExtractVersion { get; set; }
+        public byte CreatorVersion { get; set; }
+        public HostOS HostOS { get; set; }
+        public byte VolumeNumber { get; set; }
+        public DateTime DateTime { get; set; }
+        public string Advert { get; set; } = string.Empty;
+        public List<byte> Comment { get; set; } = new();
+        public byte AceVersion { get; private set; }
+
+        public AceMainHeader(IArchiveEncoding archiveEncoding)
+            : base(archiveEncoding, AceHeaderType.MAIN) { }
+
+        /// <summary>
+        /// Reads the main archive header from the stream.
+        /// Returns header if this is a valid ACE archive.
+        /// Supports both ACE 1.0 and ACE 2.0 formats.
+        /// </summary>
+        public override AceHeader? Read(Stream stream)
+        {
+            var headerData = ReadHeader(stream);
+            if (headerData.Length == 0)
+            {
+                return null;
+            }
+            int offset = 0;
+
+            // Header type should be 0 for main header
+            if (headerData[offset++] != HeaderType)
+            {
+                return null;
+            }
+
+            // Header flags (2 bytes)
+            HeaderFlags = BitConverter.ToUInt16(headerData, offset);
+            offset += 2;
+
+            // Skip signature "**ACE**" (7 bytes)
+            if (!CheckMagicBytes(headerData, offset))
+            {
+                throw new InvalidDataException("Invalid ACE archive signature.");
+            }
+            offset += 7;
+
+            // ACE version (1 byte) - 10 for ACE 1.0, 20 for ACE 2.0
+            AceVersion = headerData[offset++];
+            ExtractVersion = headerData[offset++];
+
+            // Host OS (1 byte)
+            if (offset < headerData.Length)
+            {
+                var hostOsByte = headerData[offset++];
+                HostOS = hostOsByte <= 11 ? (HostOS)hostOsByte : HostOS.Unknown;
+            }
+            // Volume number (1 byte)
+            VolumeNumber = headerData[offset++];
+
+            // Creation date/time (4 bytes)
+            var dosDateTime = BitConverter.ToUInt32(headerData, offset);
+            DateTime = ConvertDosDateTime(dosDateTime);
+            offset += 4;
+
+            // Reserved fields (8 bytes)
+            if (offset + 8 <= headerData.Length)
+            {
+                offset += 8;
+            }
+
+            // Skip additional fields based on flags
+            // Handle comment if present
+            if ((HeaderFlags & SharpCompress.Common.Ace.Headers.HeaderFlags.COMMENT) != 0)
+            {
+                if (offset + 2 <= headerData.Length)
+                {
+                    ushort commentLength = BitConverter.ToUInt16(headerData, offset);
+                    offset += 2 + commentLength;
+                }
+            }
+
+            return this;
+        }
+    }
+}

src/SharpCompress/Common/Ace/Headers/CompressionQuality.cs

@@ -0,0 +1,16 @@
+namespace SharpCompress.Common.Ace.Headers
+{
+    /// <summary>
+    /// Compression quality
+    /// </summary>
+    public enum CompressionQuality
+    {
+        None,
+        Fastest,
+        Fast,
+        Normal,
+        Good,
+        Best,
+        Unknown,
+    }
+}

src/SharpCompress/Common/Ace/Headers/CompressionType.cs

@@ -0,0 +1,13 @@
+namespace SharpCompress.Common.Ace.Headers
+{
+    /// <summary>
+    /// Compression types
+    /// </summary>
+    public enum CompressionType
+    {
+        Stored,
+        Lz77,
+        Blocked,
+        Unknown,
+    }
+}

src/SharpCompress/Common/Ace/Headers/HeaderFlags.cs

@@ -0,0 +1,33 @@
+namespace SharpCompress.Common.Ace.Headers
+{
+    /// <summary>
+    /// Header flags (main + file, overlapping meanings)
+    /// </summary>
+    public static class HeaderFlags
+    {
+        // Shared / low bits
+        public const ushort ADDSIZE = 0x0001; // extra size field present
+        public const ushort COMMENT = 0x0002; // comment present
+        public const ushort MEMORY_64BIT = 0x0004;
+        public const ushort AV_STRING = 0x0008; // AV string present
+        public const ushort SOLID = 0x0010; // solid file
+        public const ushort LOCKED = 0x0020;
+        public const ushort PROTECTED = 0x0040;
+
+        // Main header specific
+        public const ushort V20FORMAT = 0x0100;
+        public const ushort SFX = 0x0200;
+        public const ushort LIMITSFXJR = 0x0400;
+        public const ushort MULTIVOLUME = 0x0800;
+        public const ushort ADVERT = 0x1000;
+        public const ushort RECOVERY = 0x2000;
+        public const ushort LOCKED_MAIN = 0x4000;
+        public const ushort SOLID_MAIN = 0x8000;
+
+        // File header specific (same bits, different meaning)
+        public const ushort NTSECURITY = 0x0400;
+        public const ushort CONTINUED_PREV = 0x1000;
+        public const ushort CONTINUED_NEXT = 0x2000;
+        public const ushort FILE_ENCRYPTED = 0x4000; // file encrypted (file header)
+    }
+}

src/SharpCompress/Common/Ace/Headers/HostOS.cs

@@ -0,0 +1,22 @@
+namespace SharpCompress.Common.Ace.Headers
+{
+    /// <summary>
+    /// Host OS type
+    /// </summary>
+    public enum HostOS
+    {
+        MsDos = 0,
+        Os2,
+        Windows,
+        Unix,
+        MacOs,
+        WinNt,
+        Primos,
+        AppleGs,
+        Atari,
+        Vax,
+        Amiga,
+        Next,
+        Unknown,
+    }
+}

src/SharpCompress/Common/Arc/ArcEntryHeader.cs

@@ -7,7 +7,7 @@ namespace SharpCompress.Common.Arc
 {
     public class ArcEntryHeader
     {
-        public ArchiveEncoding ArchiveEncoding { get; }
+        public IArchiveEncoding ArchiveEncoding { get; }
         public CompressionType CompressionMethod { get; private set; }
         public string? Name { get; private set; }
         public long CompressedSize { get; private set; }
@@ -16,7 +16,7 @@ namespace SharpCompress.Common.Arc
         public long OriginalSize { get; private set; }
         public long DataStartPosition { get; private set; }
 
-        public ArcEntryHeader(ArchiveEncoding archiveEncoding)
+        public ArcEntryHeader(IArchiveEncoding archiveEncoding)
         {
             this.ArchiveEncoding = archiveEncoding;
         }

src/SharpCompress/Common/ArchiveEncoding.cs

@@ -3,55 +3,11 @@ using System.Text;
 
 namespace SharpCompress.Common;
 
-public class ArchiveEncoding
+public class ArchiveEncoding : IArchiveEncoding
 {
-    /// <summary>
-    /// Default encoding to use when archive format doesn't specify one.
-    /// </summary>
-    public Encoding? Default { get; set; }
-
-    /// <summary>
-    /// ArchiveEncoding used by encryption schemes which don't comply with RFC 2898.
-    /// </summary>
-    public Encoding? Password { get; set; }
-
-    /// <summary>
-    /// Set this encoding when you want to force it for all encoding operations.
-    /// </summary>
+    public Encoding Default { get; set; } = Encoding.Default;
+    public Encoding Password { get; set; } = Encoding.Default;
+    public Encoding UTF8 { get; set; } = Encoding.UTF8;
     public Encoding? Forced { get; set; }
-
-    /// <summary>
-    /// Set this when you want to use a custom method for all decoding operations.
-    /// </summary>
-    /// <returns>string Func(bytes, index, length)</returns>
-    public Func<byte[], int, int, string>? CustomDecoder { get; set; }
-
-    public ArchiveEncoding()
-        : this(Encoding.Default, Encoding.Default) { }
-
-    public ArchiveEncoding(Encoding def, Encoding password)
-    {
-        Default = def;
-        Password = password;
-    }
-
-#if !NETFRAMEWORK
-    static ArchiveEncoding() => Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
-#endif
-
-    public string Decode(byte[] bytes) => Decode(bytes, 0, bytes.Length);
-
-    public string Decode(byte[] bytes, int start, int length) =>
-        GetDecoder().Invoke(bytes, start, length);
-
-    public string DecodeUTF8(byte[] bytes) => Encoding.UTF8.GetString(bytes, 0, bytes.Length);
-
-    public byte[] Encode(string str) => GetEncoding().GetBytes(str);
-
-    public Encoding GetEncoding() => Forced ?? Default ?? Encoding.UTF8;
-
-    public Encoding GetPasswordEncoding() => Password ?? Encoding.UTF8;
-
-    public Func<byte[], int, int, string> GetDecoder() =>
-        CustomDecoder ?? ((bytes, index, count) => GetEncoding().GetString(bytes, index, count));
+    public Func<byte[], int, int, EncodingType, string>? CustomDecoder { get; set; }
 }

src/SharpCompress/Common/ArchiveEncodingExtensions.cs

@@ -0,0 +1,87 @@
+using System;
+using System.Text;
+
+namespace SharpCompress.Common;
+
+/// <summary>
+/// Specifies the type of encoding to use.
+/// </summary>
+public enum EncodingType
+{
+    /// <summary>
+    /// Uses the default encoding.
+    /// </summary>
+    Default,
+
+    /// <summary>
+    /// Uses UTF-8 encoding.
+    /// </summary>
+    UTF8,
+}
+
+/// <summary>
+/// Provides extension methods for archive encoding.
+/// </summary>
+public static class ArchiveEncodingExtensions
+{
+#if !NETFRAMEWORK
+    /// <summary>
+    /// Registers the code pages encoding provider.
+    /// </summary>
+    static ArchiveEncodingExtensions() =>
+        Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+#endif
+
+    extension(IArchiveEncoding encoding)
+    {
+        /// <summary>
+        /// Gets the encoding based on the archive encoding settings.
+        /// </summary>
+        /// <param name="useUtf8">Whether to use UTF-8.</param>
+        /// <returns>The encoding.</returns>
+        public Encoding GetEncoding(bool useUtf8 = false) =>
+            encoding.Forced ?? (useUtf8 ? encoding.UTF8 : encoding.Default);
+
+        /// <summary>
+        /// Gets the decoder function for the archive encoding.
+        /// </summary>
+        /// <returns>The decoder function.</returns>
+        public Func<byte[], int, int, EncodingType, string> GetDecoder() =>
+            encoding.CustomDecoder
+            ?? (
+                (bytes, index, count, type) =>
+                    encoding.GetEncoding(type == EncodingType.UTF8).GetString(bytes, index, count)
+            );
+
+        /// <summary>
+        /// Encodes a string using the default encoding.
+        /// </summary>
+        /// <param name="str">The string to encode.</param>
+        /// <returns>The encoded bytes.</returns>
+        public byte[] Encode(string str) => encoding.Default.GetBytes(str);
+
+        /// <summary>
+        /// Decodes bytes using the specified encoding type.
+        /// </summary>
+        /// <param name="bytes">The bytes to decode.</param>
+        /// <param name="type">The encoding type.</param>
+        /// <returns>The decoded string.</returns>
+        public string Decode(byte[] bytes, EncodingType type = EncodingType.Default) =>
+            encoding.Decode(bytes, 0, bytes.Length, type);
+
+        /// <summary>
+        /// Decodes a portion of bytes using the specified encoding type.
+        /// </summary>
+        /// <param name="bytes">The bytes to decode.</param>
+        /// <param name="start">The start index.</param>
+        /// <param name="length">The length.</param>
+        /// <param name="type">The encoding type.</param>
+        /// <returns>The decoded string.</returns>
+        public string Decode(
+            byte[] bytes,
+            int start,
+            int length,
+            EncodingType type = EncodingType.Default
+        ) => encoding.GetDecoder()(bytes, start, length, type);
+    }
+}

src/SharpCompress/Common/ArchiveExtractionEventArgs.cs

@@ -1,10 +0,0 @@
-using System;
-
-namespace SharpCompress.Common;
-
-public class ArchiveExtractionEventArgs<T> : EventArgs
-{
-    internal ArchiveExtractionEventArgs(T entry) => Item = entry;
-
-    public T Item { get; }
-}

src/SharpCompress/Common/ArchiveType.cs

@@ -9,4 +9,5 @@ public enum ArchiveType
     GZip,
     Arc,
     Arj,
+    Ace,
 }

src/SharpCompress/Common/Arj/Headers/ArjHeader.cs

@@ -34,14 +34,13 @@ namespace SharpCompress.Common.Arj.Headers
         public byte[] ReadHeader(Stream stream)
         {
             // check for magic bytes
-            Span<byte> magic = stackalloc byte[2];
+            var magic = new byte[2];
             if (stream.Read(magic) != 2)
             {
                 return Array.Empty<byte>();
             }
 
-            var magicValue = (ushort)(magic[0] | magic[1] << 8);
-            if (magicValue != ARJ_MAGIC)
+            if (!CheckMagicBytes(magic))
             {
                 throw new InvalidDataException("Not an ARJ file (wrong magic bytes)");
             }
@@ -138,5 +137,22 @@ namespace SharpCompress.Common.Arj.Headers
                 ? (FileType)value
                 : Headers.FileType.Unknown;
         }
+
+        public static bool IsArchive(Stream stream)
+        {
+            var bytes = new byte[2];
+            if (stream.Read(bytes, 0, 2) != 2)
+            {
+                return false;
+            }
+
+            return CheckMagicBytes(bytes);
+        }
+
+        protected static bool CheckMagicBytes(byte[] headerBytes)
+        {
+            var magicValue = (ushort)(headerBytes[0] | headerBytes[1] << 8);
+            return magicValue == ARJ_MAGIC;
+        }
     }
 }

src/SharpCompress/Common/AsyncBinaryReader.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Buffers.Binary;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace SharpCompress.Common
+{
+    public sealed class AsyncBinaryReader : IDisposable
+    {
+        private readonly Stream _stream;
+        private readonly Stream _originalStream;
+        private readonly bool _leaveOpen;
+        private readonly byte[] _buffer = new byte[8];
+        private bool _disposed;
+
+        public AsyncBinaryReader(Stream stream, bool leaveOpen = false, int bufferSize = 4096)
+        {
+            _originalStream = stream ?? throw new ArgumentNullException(nameof(stream));
+            _leaveOpen = leaveOpen;
+
+            // Use the stream directly without wrapping in BufferedStream
+            // BufferedStream uses synchronous Read internally which doesn't work with async-only streams
+            // SharpCompress uses SharpCompressStream for buffering which supports true async reads
+            _stream = stream;
+        }
+
+        public Stream BaseStream => _stream;
+
+        public async ValueTask<byte> ReadByteAsync(CancellationToken ct = default)
+        {
+            await _stream.ReadExactAsync(_buffer, 0, 1, ct).ConfigureAwait(false);
+            return _buffer[0];
+        }
+
+        public async ValueTask<ushort> ReadUInt16Async(CancellationToken ct = default)
+        {
+            await _stream.ReadExactAsync(_buffer, 0, 2, ct).ConfigureAwait(false);
+            return BinaryPrimitives.ReadUInt16LittleEndian(_buffer);
+        }
+
+        public async ValueTask<uint> ReadUInt32Async(CancellationToken ct = default)
+        {
+            await _stream.ReadExactAsync(_buffer, 0, 4, ct).ConfigureAwait(false);
+            return BinaryPrimitives.ReadUInt32LittleEndian(_buffer);
+        }
+
+        public async ValueTask<ulong> ReadUInt64Async(CancellationToken ct = default)
+        {
+            await _stream.ReadExactAsync(_buffer, 0, 8, ct).ConfigureAwait(false);
+            return BinaryPrimitives.ReadUInt64LittleEndian(_buffer);
+        }
+
+        public async ValueTask<byte[]> ReadBytesAsync(int count, CancellationToken ct = default)
+        {
+            var result = new byte[count];
+            await _stream.ReadExactAsync(result, 0, count, ct).ConfigureAwait(false);
+            return result;
+        }
+
+        public void Dispose()
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            _disposed = true;
+
+            // Dispose the original stream if we own it
+            if (!_leaveOpen)
+            {
+                _originalStream.Dispose();
+            }
+        }
+
+#if NET6_0_OR_GREATER
+        public async ValueTask DisposeAsync()
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            _disposed = true;
+
+            // Dispose the original stream if we own it
+            if (!_leaveOpen)
+            {
+                await _originalStream.DisposeAsync().ConfigureAwait(false);
+            }
+        }
+#endif
+    }
+}

src/SharpCompress/Common/CompressedBytesReadEventArgs.cs

@@ -1,25 +0,0 @@
-using System;
-
-namespace SharpCompress.Common;
-
-public sealed class CompressedBytesReadEventArgs : EventArgs
-{
-    public CompressedBytesReadEventArgs(
-        long compressedBytesRead,
-        long currentFilePartCompressedBytesRead
-    )
-    {
-        CompressedBytesRead = compressedBytesRead;
-        CurrentFilePartCompressedBytesRead = currentFilePartCompressedBytesRead;
-    }
-
-    /// <summary>
-    /// Compressed bytes read for the current entry
-    /// </summary>
-    public long CompressedBytesRead { get; }
-
-    /// <summary>
-    /// Current file part read for Multipart files (e.g. Rar)
-    /// </summary>
-    public long CurrentFilePartCompressedBytesRead { get; }
-}

src/SharpCompress/Common/CompressionType.cs

@@ -30,4 +30,5 @@ public enum CompressionType
     Distilled,
     ZStandard,
     ArjLZ77,
+    AceLZ77,
 }

src/SharpCompress/Common/EntryStream.cs

@@ -56,7 +56,7 @@ public class EntryStream : Stream, IStreamStack
     /// <summary>
     /// Asynchronously skip the rest of the entry stream.
     /// </summary>
-    public async Task SkipEntryAsync(CancellationToken cancellationToken = default)
+    public async ValueTask SkipEntryAsync(CancellationToken cancellationToken = default)
     {
         await this.SkipAsync(cancellationToken).ConfigureAwait(false);
         _completed = true;

src/SharpCompress/Common/ExtractionMethods.cs

@@ -124,11 +124,11 @@ internal static class ExtractionMethods
         }
     }
 
-    public static async Task WriteEntryToDirectoryAsync(
+    public static async ValueTask WriteEntryToDirectoryAsync(
         IEntry entry,
         string destinationDirectory,
         ExtractionOptions? options,
-        Func<string, ExtractionOptions?, Task> writeAsync,
+        Func<string, ExtractionOptions?, CancellationToken, ValueTask> writeAsync,
         CancellationToken cancellationToken = default
     )
     {
@@ -189,7 +189,7 @@ internal static class ExtractionMethods
                     "Entry is trying to write a file outside of the destination directory."
                 );
             }
-            await writeAsync(destinationFileName, options).ConfigureAwait(false);
+            await writeAsync(destinationFileName, options, cancellationToken).ConfigureAwait(false);
         }
         else if (options.ExtractFullPath && !Directory.Exists(destinationFileName))
         {
@@ -197,11 +197,11 @@ internal static class ExtractionMethods
         }
     }
 
-    public static async Task WriteEntryToFileAsync(
+    public static async ValueTask WriteEntryToFileAsync(
         IEntry entry,
         string destinationFileName,
         ExtractionOptions? options,
-        Func<string, FileMode, Task> openAndWriteAsync,
+        Func<string, FileMode, CancellationToken, ValueTask> openAndWriteAsync,
         CancellationToken cancellationToken = default
     )
     {
@@ -225,7 +225,8 @@ internal static class ExtractionMethods
                 fm = FileMode.CreateNew;
             }
 
-            await openAndWriteAsync(destinationFileName, fm).ConfigureAwait(false);
+            await openAndWriteAsync(destinationFileName, fm, cancellationToken)
+                .ConfigureAwait(false);
             entry.PreserveExtractionOptions(destinationFileName, options);
         }
     }

src/SharpCompress/Common/FilePart.cs

@@ -1,12 +1,14 @@
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common;
 
 public abstract class FilePart
 {
-    protected FilePart(ArchiveEncoding archiveEncoding) => ArchiveEncoding = archiveEncoding;
+    protected FilePart(IArchiveEncoding archiveEncoding) => ArchiveEncoding = archiveEncoding;
 
-    internal ArchiveEncoding ArchiveEncoding { get; }
+    internal IArchiveEncoding ArchiveEncoding { get; }
 
     internal abstract string? FilePartName { get; }
     public int Index { get; set; }
@@ -14,4 +16,8 @@ public abstract class FilePart
     internal abstract Stream? GetCompressedStream();
     internal abstract Stream? GetRawStream();
     internal bool Skipped { get; set; }
+
+    internal virtual ValueTask<Stream?> GetCompressedStreamAsync(
+        CancellationToken cancellationToken = default
+    ) => new(GetCompressedStream());
 }

src/SharpCompress/Common/FilePartExtractionBeginEventArgs.cs

@@ -1,28 +0,0 @@
-using System;
-
-namespace SharpCompress.Common;
-
-public sealed class FilePartExtractionBeginEventArgs : EventArgs
-{
-    public FilePartExtractionBeginEventArgs(string name, long size, long compressedSize)
-    {
-        Name = name;
-        Size = size;
-        CompressedSize = compressedSize;
-    }
-
-    /// <summary>
-    /// File name for the part for the current entry
-    /// </summary>
-    public string Name { get; }
-
-    /// <summary>
-    /// Uncompressed size of the current entry in the part
-    /// </summary>
-    public long Size { get; }
-
-    /// <summary>
-    /// Compressed size of the current entry in the part
-    /// </summary>
-    public long CompressedSize { get; }
-}

src/SharpCompress/Common/GZip/GZipFilePart.cs

@@ -13,7 +13,7 @@ internal sealed class GZipFilePart : FilePart
     private string? _name;
     private readonly Stream _stream;
 
-    internal GZipFilePart(Stream stream, ArchiveEncoding archiveEncoding)
+    internal GZipFilePart(Stream stream, IArchiveEncoding archiveEncoding)
         : base(archiveEncoding)
     {
         _stream = stream;

src/SharpCompress/Common/IArchiveEncoding.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Text;
+
+namespace SharpCompress.Common;
+
+/// <summary>
+/// Defines the encoding settings for archives.
+/// </summary>
+public interface IArchiveEncoding
+{
+    /// <summary>
+    /// Default encoding to use when archive format doesn't specify one.  Required and defaults to Encoding.Default.
+    /// </summary>
+    public Encoding Default { get; set; }
+
+    /// <summary>
+    /// ArchiveEncoding used by encryption schemes which don't comply with RFC 2898. Required and defaults to Encoding.Default.
+    /// </summary>
+    public Encoding Password { get; set; }
+
+    /// <summary>
+    /// Default encoding to use when archive format specifies UTF-8 encoding. Required and defaults to Encoding.UTF8.
+    /// </summary>
+    public Encoding UTF8 { get; set; }
+
+    /// <summary>
+    /// Set this encoding when you want to force it for all encoding operations.
+    /// </summary>
+    public Encoding? Forced { get; set; }
+
+    /// <summary>
+    /// Set this when you want to use a custom method for all decoding operations.
+    /// </summary>
+    /// <returns>string Func(bytes, index, length, EncodingType)</returns>
+    public Func<byte[], int, int, EncodingType, string>? CustomDecoder { get; set; }
+}

src/SharpCompress/Common/IExtractionListener.cs

@@ -1,7 +0,0 @@
-namespace SharpCompress.Common;
-
-public interface IExtractionListener
-{
-    void FireFilePartExtractionBegin(string name, long size, long compressedSize);
-    void FireCompressedBytesRead(long currentPartCompressedBytes, long compressedReadBytes);
-}

src/SharpCompress/Common/OptionsBase.cs

@@ -7,5 +7,5 @@ public class OptionsBase
     /// </summary>
     public bool LeaveStreamOpen { get; set; } = true;
 
-    public ArchiveEncoding ArchiveEncoding { get; set; } = new();
+    public IArchiveEncoding ArchiveEncoding { get; set; } = new ArchiveEncoding();
 }

src/SharpCompress/Common/ProgressReport.cs

@@ -0,0 +1,43 @@
+namespace SharpCompress.Common;
+
+/// <summary>
+/// Represents progress information for compression or extraction operations.
+/// </summary>
+public sealed class ProgressReport
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ProgressReport"/> class.
+    /// </summary>
+    /// <param name="entryPath">The path of the entry being processed.</param>
+    /// <param name="bytesTransferred">Number of bytes transferred so far.</param>
+    /// <param name="totalBytes">Total bytes to be transferred, or null if unknown.</param>
+    public ProgressReport(string entryPath, long bytesTransferred, long? totalBytes)
+    {
+        EntryPath = entryPath;
+        BytesTransferred = bytesTransferred;
+        TotalBytes = totalBytes;
+    }
+
+    /// <summary>
+    /// Gets the path of the entry being processed.
+    /// </summary>
+    public string EntryPath { get; }
+
+    /// <summary>
+    /// Gets the number of bytes transferred so far.
+    /// </summary>
+    public long BytesTransferred { get; }
+
+    /// <summary>
+    /// Gets the total number of bytes to be transferred, or null if unknown.
+    /// </summary>
+    public long? TotalBytes { get; }
+
+    /// <summary>
+    /// Gets the progress percentage (0-100), or null if total bytes is unknown.
+    /// </summary>
+    public double? PercentComplete =>
+        TotalBytes.HasValue && TotalBytes.Value > 0
+            ? (double)BytesTransferred / TotalBytes.Value * 100
+            : null;
+}

src/SharpCompress/Common/Rar/Headers/RarHeader.cs

@@ -13,7 +13,7 @@ internal class RarHeader : IRarHeader
     internal static RarHeader? TryReadBase(
         RarCrcBinaryReader reader,
         bool isRar5,
-        ArchiveEncoding archiveEncoding
+        IArchiveEncoding archiveEncoding
     )
     {
         try
@@ -26,7 +26,7 @@ internal class RarHeader : IRarHeader
         }
     }
 
-    private RarHeader(RarCrcBinaryReader reader, bool isRar5, ArchiveEncoding archiveEncoding)
+    private RarHeader(RarCrcBinaryReader reader, bool isRar5, IArchiveEncoding archiveEncoding)
     {
         _headerType = HeaderType.Null;
         _isRar5 = isRar5;
@@ -115,7 +115,7 @@ internal class RarHeader : IRarHeader
 
     protected int HeaderSize { get; }
 
-    internal ArchiveEncoding ArchiveEncoding { get; }
+    internal IArchiveEncoding ArchiveEncoding { get; }
 
     /// <summary>
     /// Extra header size.

src/SharpCompress/Common/ReaderExtractionEventArgs.cs

@@ -1,17 +0,0 @@
-using System;
-using SharpCompress.Readers;
-
-namespace SharpCompress.Common;
-
-public sealed class ReaderExtractionEventArgs<T> : EventArgs
-{
-    internal ReaderExtractionEventArgs(T entry, ReaderProgress? readerProgress = null)
-    {
-        Item = entry;
-        ReaderProgress = readerProgress;
-    }
-
-    public T Item { get; }
-
-    public ReaderProgress? ReaderProgress { get; }
-}

src/SharpCompress/Common/SevenZip/SevenZipFilePart.cs

@@ -15,7 +15,7 @@ internal class SevenZipFilePart : FilePart
         ArchiveDatabase database,
         int index,
         CFileItem fileEntry,
-        ArchiveEncoding archiveEncoding
+        IArchiveEncoding archiveEncoding
     )
         : base(archiveEncoding)
     {
@@ -55,7 +55,7 @@ internal class SevenZipFilePart : FilePart
         {
             folderStream.Skip(skipSize);
         }
-        return new ReadOnlySubStream(folderStream, Header.Size);
+        return new ReadOnlySubStream(folderStream, Header.Size, leaveOpen: false);
     }
 
     public CompressionType CompressionType

src/SharpCompress/Common/Tar/Headers/TarHeader.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Buffers.Binary;
+using System.Collections.Generic;
 using System.IO;
 using System.Text;
 
@@ -9,8 +10,16 @@ internal sealed class TarHeader
 {
     internal static readonly DateTime EPOCH = new(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
 
-    public TarHeader(ArchiveEncoding archiveEncoding) => ArchiveEncoding = archiveEncoding;
+    public TarHeader(
+        IArchiveEncoding archiveEncoding,
+        TarHeaderWriteFormat writeFormat = TarHeaderWriteFormat.GNU_TAR_LONG_LINK
+    )
+    {
+        ArchiveEncoding = archiveEncoding;
+        WriteFormat = writeFormat;
+    }
 
+    internal TarHeaderWriteFormat WriteFormat { get; set; }
     internal string? Name { get; set; }
     internal string? LinkName { get; set; }
 
@@ -21,7 +30,7 @@ internal sealed class TarHeader
     internal DateTime LastModifiedTime { get; set; }
     internal EntryType EntryType { get; set; }
     internal Stream? PackedStream { get; set; }
-    internal ArchiveEncoding ArchiveEncoding { get; }
+    internal IArchiveEncoding ArchiveEncoding { get; }
 
     internal const int BLOCK_SIZE = 512;
 
@@ -30,6 +39,114 @@ internal sealed class TarHeader
     private const int MAX_LONG_NAME_SIZE = 32768;
 
     internal void Write(Stream output)
+    {
+        switch (WriteFormat)
+        {
+            case TarHeaderWriteFormat.GNU_TAR_LONG_LINK:
+                WriteGnuTarLongLink(output);
+                break;
+            case TarHeaderWriteFormat.USTAR:
+                WriteUstar(output);
+                break;
+            default:
+                throw new Exception("This should be impossible...");
+        }
+    }
+
+    internal void WriteUstar(Stream output)
+    {
+        var buffer = new byte[BLOCK_SIZE];
+
+        WriteOctalBytes(511, buffer, 100, 8); // file mode
+        WriteOctalBytes(0, buffer, 108, 8); // owner ID
+        WriteOctalBytes(0, buffer, 116, 8); // group ID
+
+        //ArchiveEncoding.UTF8.GetBytes("magic").CopyTo(buffer, 257);
+        var nameByteCount = ArchiveEncoding
+            .GetEncoding()
+            .GetByteCount(Name.NotNull("Name is null"));
+
+        if (nameByteCount > 100)
+        {
+            // if name is longer, try to split it into name and namePrefix
+
+            string fullName = Name.NotNull("Name is null");
+
+            // find all directory separators
+            List<int> dirSeps = new List<int>();
+            for (int i = 0; i < fullName.Length; i++)
+            {
+                if (fullName[i] == Path.DirectorySeparatorChar)
+                {
+                    dirSeps.Add(i);
+                }
+            }
+
+            // find the right place to split the name
+            int splitIndex = -1;
+            for (int i = 0; i < dirSeps.Count; i++)
+            {
+                int count = ArchiveEncoding
+                    .GetEncoding()
+                    .GetByteCount(fullName.Substring(0, dirSeps[i]));
+                if (count < 155)
+                {
+                    splitIndex = dirSeps[i];
+                }
+                else
+                {
+                    break;
+                }
+            }
+
+            if (splitIndex == -1)
+            {
+                throw new Exception(
+                    $"Tar header USTAR format can not fit file name \"{fullName}\" of length {nameByteCount}! Directory separator not found! Try using GNU Tar format instead!"
+                );
+            }
+
+            string namePrefix = fullName.Substring(0, splitIndex);
+            string name = fullName.Substring(splitIndex + 1);
+
+            if (this.ArchiveEncoding.GetEncoding().GetByteCount(namePrefix) >= 155)
+                throw new Exception(
+                    $"Tar header USTAR format can not fit file name \"{fullName}\" of length {nameByteCount}! Try using GNU Tar format instead!"
+                );
+
+            if (this.ArchiveEncoding.GetEncoding().GetByteCount(name) >= 100)
+                throw new Exception(
+                    $"Tar header USTAR format can not fit file name \"{fullName}\" of length {nameByteCount}! Try using GNU Tar format instead!"
+                );
+
+            // write name prefix
+            WriteStringBytes(ArchiveEncoding.Encode(namePrefix), buffer, 345, 100);
+            // write partial name
+            WriteStringBytes(ArchiveEncoding.Encode(name), buffer, 100);
+        }
+        else
+        {
+            WriteStringBytes(ArchiveEncoding.Encode(Name.NotNull("Name is null")), buffer, 100);
+        }
+
+        WriteOctalBytes(Size, buffer, 124, 12);
+        var time = (long)(LastModifiedTime.ToUniversalTime() - EPOCH).TotalSeconds;
+        WriteOctalBytes(time, buffer, 136, 12);
+        buffer[156] = (byte)EntryType;
+
+        // write ustar magic field
+        WriteStringBytes(Encoding.ASCII.GetBytes("ustar"), buffer, 257, 6);
+        // write ustar version "00"
+        buffer[263] = 0x30;
+        buffer[264] = 0x30;
+
+        var crc = RecalculateChecksum(buffer);
+        WriteOctalBytes(crc, buffer, 148, 8);
+
+        output.Write(buffer, 0, buffer.Length);
+    }
+
+    internal void WriteGnuTarLongLink(Stream output)
     {
         var buffer = new byte[BLOCK_SIZE];
 
@@ -85,7 +202,7 @@ internal sealed class TarHeader
                 0,
                 100 - ArchiveEncoding.GetEncoding().GetMaxByteCount(1)
             );
-            Write(output);
+            WriteGnuTarLongLink(output);
         }
     }
 
@@ -241,6 +358,18 @@ internal sealed class TarHeader
         buffer.Slice(i, length - i).Clear();
     }
 
+    private static void WriteStringBytes(
+        ReadOnlySpan<byte> name,
+        Span<byte> buffer,
+        int offset,
+        int length
+    )
+    {
+        name.CopyTo(buffer.Slice(offset));
+        var i = Math.Min(length, name.Length);
+        buffer.Slice(offset + i, length - i).Clear();
+    }
+
     private static void WriteStringBytes(string name, byte[] buffer, int offset, int length)
     {
         int i;

src/SharpCompress/Common/Tar/Headers/TarHeaderWriteFormat.cs

@@ -0,0 +1,7 @@
+namespace SharpCompress.Common.Tar.Headers;
+
+public enum TarHeaderWriteFormat
+{
+    GNU_TAR_LONG_LINK,
+    USTAR,
+}

src/SharpCompress/Common/Tar/TarEntry.cs

@@ -54,7 +54,7 @@ public class TarEntry : Entry
         StreamingMode mode,
         Stream stream,
         CompressionType compressionType,
-        ArchiveEncoding archiveEncoding
+        IArchiveEncoding archiveEncoding
     )
     {
         foreach (var header in TarHeaderFactory.ReadHeader(mode, stream, archiveEncoding))

src/SharpCompress/Common/Tar/TarHeaderFactory.cs

@@ -10,7 +10,7 @@ internal static class TarHeaderFactory
     internal static IEnumerable<TarHeader?> ReadHeader(
         StreamingMode mode,
         Stream stream,
-        ArchiveEncoding archiveEncoding
+        IArchiveEncoding archiveEncoding
     )
     {
         while (true)

src/SharpCompress/Common/Zip/Headers/DirectoryEndHeader.cs

@@ -1,4 +1,5 @@
 using System.IO;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
@@ -19,6 +20,18 @@ internal class DirectoryEndHeader : ZipHeader
         Comment = reader.ReadBytes(CommentLength);
     }
 
+    internal override async ValueTask Read(AsyncBinaryReader reader)
+    {
+        VolumeNumber = await reader.ReadUInt16Async();
+        FirstVolumeWithDirectory = await reader.ReadUInt16Async();
+        TotalNumberOfEntriesInDisk = await reader.ReadUInt16Async();
+        TotalNumberOfEntries = await reader.ReadUInt16Async();
+        DirectorySize = await reader.ReadUInt32Async();
+        DirectoryStartOffsetRelativeToDisk = await reader.ReadUInt32Async();
+        CommentLength = await reader.ReadUInt16Async();
+        Comment = await reader.ReadBytesAsync(CommentLength);
+    }
+
     public ushort VolumeNumber { get; private set; }
 
     public ushort FirstVolumeWithDirectory { get; private set; }

src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.cs

@@ -1,11 +1,12 @@
 using System.IO;
 using System.Linq;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
 internal class DirectoryEntryHeader : ZipFileEntry
 {
-    public DirectoryEntryHeader(ArchiveEncoding archiveEncoding)
+    public DirectoryEntryHeader(IArchiveEncoding archiveEncoding)
         : base(ZipHeaderType.DirectoryEntry, archiveEncoding) { }
 
     internal override void Read(BinaryReader reader)
@@ -31,7 +32,37 @@ internal class DirectoryEntryHeader : ZipFileEntry
         var extra = reader.ReadBytes(extraLength);
         var comment = reader.ReadBytes(commentLength);
 
-        // According to .ZIP File Format Specification
+        ProcessReadData(name, extra, comment);
+    }
+
+    internal override async ValueTask Read(AsyncBinaryReader reader)
+    {
+        Version = await reader.ReadUInt16Async();
+        VersionNeededToExtract = await reader.ReadUInt16Async();
+        Flags = (HeaderFlags)await reader.ReadUInt16Async();
+        CompressionMethod = (ZipCompressionMethod)await reader.ReadUInt16Async();
+        OriginalLastModifiedTime = LastModifiedTime = await reader.ReadUInt16Async();
+        OriginalLastModifiedDate = LastModifiedDate = await reader.ReadUInt16Async();
+        Crc = await reader.ReadUInt32Async();
+        CompressedSize = await reader.ReadUInt32Async();
+        UncompressedSize = await reader.ReadUInt32Async();
+        var nameLength = await reader.ReadUInt16Async();
+        var extraLength = await reader.ReadUInt16Async();
+        var commentLength = await reader.ReadUInt16Async();
+        DiskNumberStart = await reader.ReadUInt16Async();
+        InternalFileAttributes = await reader.ReadUInt16Async();
+        ExternalFileAttributes = await reader.ReadUInt32Async();
+        RelativeOffsetOfEntryHeader = await reader.ReadUInt32Async();
+
+        var name = await reader.ReadBytesAsync(nameLength);
+        var extra = await reader.ReadBytesAsync(extraLength);
+        var comment = await reader.ReadBytesAsync(commentLength);
+
+        ProcessReadData(name, extra, comment);
+    }
+
+    private void ProcessReadData(byte[] name, byte[] extra, byte[] comment)
+    {
         //
         // For example: https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT
         //
@@ -41,8 +72,8 @@ internal class DirectoryEntryHeader : ZipFileEntry
 
         if (Flags.HasFlag(HeaderFlags.Efs))
         {
-            Name = ArchiveEncoding.DecodeUTF8(name);
-            Comment = ArchiveEncoding.DecodeUTF8(comment);
+            Name = ArchiveEncoding.Decode(name, EncodingType.UTF8);
+            Comment = ArchiveEncoding.Decode(comment, EncodingType.UTF8);
         }
         else
         {

src/SharpCompress/Common/Zip/Headers/IgnoreHeader.cs

@@ -1,4 +1,5 @@
 using System.IO;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
@@ -8,4 +9,6 @@ internal class IgnoreHeader : ZipHeader
         : base(type) { }
 
     internal override void Read(BinaryReader reader) { }
+
+    internal override ValueTask Read(AsyncBinaryReader reader) => default;
 }

src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.cs

@@ -1,13 +1,12 @@
 using System.IO;
 using System.Linq;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
-internal class LocalEntryHeader : ZipFileEntry
+internal class LocalEntryHeader(IArchiveEncoding archiveEncoding)
+    : ZipFileEntry(ZipHeaderType.LocalEntry, archiveEncoding)
 {
-    public LocalEntryHeader(ArchiveEncoding archiveEncoding)
-        : base(ZipHeaderType.LocalEntry, archiveEncoding) { }
-
     internal override void Read(BinaryReader reader)
     {
         Version = reader.ReadUInt16();
@@ -23,7 +22,29 @@ internal class LocalEntryHeader : ZipFileEntry
         var name = reader.ReadBytes(nameLength);
         var extra = reader.ReadBytes(extraLength);
 
-        // According to .ZIP File Format Specification
+        ProcessReadData(name, extra);
+    }
+
+    internal override async ValueTask Read(AsyncBinaryReader reader)
+    {
+        Version = await reader.ReadUInt16Async();
+        Flags = (HeaderFlags)await reader.ReadUInt16Async();
+        CompressionMethod = (ZipCompressionMethod)await reader.ReadUInt16Async();
+        OriginalLastModifiedTime = LastModifiedTime = await reader.ReadUInt16Async();
+        OriginalLastModifiedDate = LastModifiedDate = await reader.ReadUInt16Async();
+        Crc = await reader.ReadUInt32Async();
+        CompressedSize = await reader.ReadUInt32Async();
+        UncompressedSize = await reader.ReadUInt32Async();
+        var nameLength = await reader.ReadUInt16Async();
+        var extraLength = await reader.ReadUInt16Async();
+        var name = await reader.ReadBytesAsync(nameLength);
+        var extra = await reader.ReadBytesAsync(extraLength);
+
+        ProcessReadData(name, extra);
+    }
+
+    private void ProcessReadData(byte[] name, byte[] extra)
+    {
         //
         // For example: https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT
         //
@@ -33,7 +54,7 @@ internal class LocalEntryHeader : ZipFileEntry
 
         if (Flags.HasFlag(HeaderFlags.Efs))
         {
-            Name = ArchiveEncoding.DecodeUTF8(name);
+            Name = ArchiveEncoding.Decode(name, EncodingType.UTF8);
         }
         else
         {

src/SharpCompress/Common/Zip/Headers/SplitHeader.cs

@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
@@ -9,4 +10,7 @@ internal class SplitHeader : ZipHeader
         : base(ZipHeaderType.Split) { }
 
     internal override void Read(BinaryReader reader) => throw new NotImplementedException();
+
+    internal override ValueTask Read(AsyncBinaryReader reader) =>
+        throw new NotImplementedException();
 }

src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndHeader.cs

@@ -1,4 +1,5 @@
 using System.IO;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
@@ -26,6 +27,25 @@ internal class Zip64DirectoryEndHeader : ZipHeader
         );
     }
 
+    internal override async ValueTask Read(AsyncBinaryReader reader)
+    {
+        SizeOfDirectoryEndRecord = (long)await reader.ReadUInt64Async();
+        VersionMadeBy = await reader.ReadUInt16Async();
+        VersionNeededToExtract = await reader.ReadUInt16Async();
+        VolumeNumber = await reader.ReadUInt32Async();
+        FirstVolumeWithDirectory = await reader.ReadUInt32Async();
+        TotalNumberOfEntriesInDisk = (long)await reader.ReadUInt64Async();
+        TotalNumberOfEntries = (long)await reader.ReadUInt64Async();
+        DirectorySize = (long)await reader.ReadUInt64Async();
+        DirectoryStartOffsetRelativeToDisk = (long)await reader.ReadUInt64Async();
+        DataSector = await reader.ReadBytesAsync(
+            (int)(
+                SizeOfDirectoryEndRecord
+                - SIZE_OF_FIXED_HEADER_DATA_EXCEPT_SIGNATURE_AND_SIZE_FIELDS
+            )
+        );
+    }
+
     private const int SIZE_OF_FIXED_HEADER_DATA_EXCEPT_SIGNATURE_AND_SIZE_FIELDS = 44;
 
     public long SizeOfDirectoryEndRecord { get; private set; }

src/SharpCompress/Common/Zip/Headers/Zip64DirectoryEndLocatorHeader.cs

@@ -1,12 +1,10 @@
 using System.IO;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
-internal class Zip64DirectoryEndLocatorHeader : ZipHeader
+internal class Zip64DirectoryEndLocatorHeader() : ZipHeader(ZipHeaderType.Zip64DirectoryEndLocator)
 {
-    public Zip64DirectoryEndLocatorHeader()
-        : base(ZipHeaderType.Zip64DirectoryEndLocator) { }
-
     internal override void Read(BinaryReader reader)
     {
         FirstVolumeWithDirectory = reader.ReadUInt32();
@@ -14,6 +12,13 @@ internal class Zip64DirectoryEndLocatorHeader : ZipHeader
         TotalNumberOfVolumes = reader.ReadUInt32();
     }
 
+    internal override async ValueTask Read(AsyncBinaryReader reader)
+    {
+        FirstVolumeWithDirectory = await reader.ReadUInt32Async();
+        RelativeOffsetOfTheEndOfDirectoryRecord = (long)await reader.ReadUInt64Async();
+        TotalNumberOfVolumes = await reader.ReadUInt32Async();
+    }
+
     public uint FirstVolumeWithDirectory { get; private set; }
 
     public long RelativeOffsetOfTheEndOfDirectoryRecord { get; private set; }

src/SharpCompress/Common/Zip/Headers/ZipFileEntry.cs

@@ -2,18 +2,14 @@ using System;
 using System.Buffers.Binary;
 using System.Collections.Generic;
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
-internal abstract class ZipFileEntry : ZipHeader
+internal abstract class ZipFileEntry(ZipHeaderType type, IArchiveEncoding archiveEncoding)
+    : ZipHeader(type)
 {
-    protected ZipFileEntry(ZipHeaderType type, ArchiveEncoding archiveEncoding)
-        : base(type)
-    {
-        Extra = new List<ExtraData>();
-        ArchiveEncoding = archiveEncoding;
-    }
-
     internal bool IsDirectory
     {
         get
@@ -30,7 +26,7 @@ internal abstract class ZipFileEntry : ZipHeader
 
     internal Stream? PackedStream { get; set; }
 
-    internal ArchiveEncoding ArchiveEncoding { get; }
+    internal IArchiveEncoding ArchiveEncoding { get; } = archiveEncoding;
 
     internal string? Name { get; set; }
 
@@ -44,7 +40,7 @@ internal abstract class ZipFileEntry : ZipHeader
 
     internal long UncompressedSize { get; set; }
 
-    internal List<ExtraData> Extra { get; set; }
+    internal List<ExtraData> Extra { get; set; } = new();
 
     public string? Password { get; set; }
 
@@ -63,6 +59,24 @@ internal abstract class ZipFileEntry : ZipHeader
         return encryptionData;
     }
 
+    internal async ValueTask<PkwareTraditionalEncryptionData> ComposeEncryptionDataAsync(
+        Stream archiveStream,
+        CancellationToken cancellationToken = default
+    )
+    {
+        if (archiveStream is null)
+        {
+            throw new ArgumentNullException(nameof(archiveStream));
+        }
+
+        var buffer = new byte[12];
+        await archiveStream.ReadFullyAsync(buffer, 0, 12, cancellationToken).ConfigureAwait(false);
+
+        var encryptionData = PkwareTraditionalEncryptionData.ForRead(Password!, this, buffer);
+
+        return encryptionData;
+    }
+
     internal WinzipAesEncryptionData? WinzipAesEncryptionData { get; set; }
 
     /// <summary>

src/SharpCompress/Common/Zip/Headers/ZipHeader.cs

@@ -1,18 +1,14 @@
 using System.IO;
+using System.Threading.Tasks;
 
 namespace SharpCompress.Common.Zip.Headers;
 
-internal abstract class ZipHeader
+internal abstract class ZipHeader(ZipHeaderType type)
 {
-    protected ZipHeader(ZipHeaderType type)
-    {
-        ZipHeaderType = type;
-        HasData = true;
-    }
-
-    internal ZipHeaderType ZipHeaderType { get; }
+    internal ZipHeaderType ZipHeaderType { get; } = type;
 
     internal abstract void Read(BinaryReader reader);
+    internal abstract ValueTask Read(AsyncBinaryReader reader);
 
-    internal bool HasData { get; set; }
+    internal bool HasData { get; set; } = true;
 }

src/SharpCompress/Common/Zip/PkwareTraditionalEncryptionData.cs

@@ -8,9 +8,9 @@ internal class PkwareTraditionalEncryptionData
 {
     private static readonly CRC32 CRC32 = new();
     private readonly uint[] _keys = { 0x12345678, 0x23456789, 0x34567890 };
-    private readonly ArchiveEncoding _archiveEncoding;
+    private readonly IArchiveEncoding _archiveEncoding;
 
-    private PkwareTraditionalEncryptionData(string password, ArchiveEncoding archiveEncoding)
+    private PkwareTraditionalEncryptionData(string password, IArchiveEncoding archiveEncoding)
     {
         _archiveEncoding = archiveEncoding;
         Initialize(password);
@@ -103,7 +103,7 @@ internal class PkwareTraditionalEncryptionData
 
     internal byte[] StringToByteArray(string value)
     {
-        var a = _archiveEncoding.GetPasswordEncoding().GetBytes(value);
+        var a = _archiveEncoding.Password.GetBytes(value);
         return a;
     }
 

src/SharpCompress/Common/Zip/SeekableZipFilePart.cs

@@ -1,4 +1,6 @@
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Common.Zip.Headers;
 
 namespace SharpCompress.Common.Zip;
@@ -25,9 +27,24 @@ internal class SeekableZipFilePart : ZipFilePart
         return base.GetCompressedStream();
     }
 
+    internal override async ValueTask<Stream?> GetCompressedStreamAsync(
+        CancellationToken cancellationToken = default
+    )
+    {
+        if (!_isLocalHeaderLoaded)
+        {
+            await LoadLocalHeaderAsync(cancellationToken);
+            _isLocalHeaderLoaded = true;
+        }
+        return await base.GetCompressedStreamAsync(cancellationToken);
+    }
+
     private void LoadLocalHeader() =>
         Header = _headerFactory.GetLocalHeader(BaseStream, (DirectoryEntryHeader)Header);
 
+    private async ValueTask LoadLocalHeaderAsync(CancellationToken cancellationToken = default) =>
+        Header = await _headerFactory.GetLocalHeaderAsync(BaseStream, (DirectoryEntryHeader)Header);
+
     protected override Stream CreateBaseStream()
     {
         BaseStream.Position = Header.DataStartPosition.NotNull();

src/SharpCompress/Common/Zip/SeekableZipHeaderFactory.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Threading.Tasks;
 using SharpCompress.Common.Zip.Headers;
 using SharpCompress.IO;
 
@@ -15,10 +16,77 @@ internal sealed class SeekableZipHeaderFactory : ZipHeaderFactory
     private const int MAX_SEARCH_LENGTH_FOR_EOCD = 65557;
     private bool _zip64;
 
-    internal SeekableZipHeaderFactory(string? password, ArchiveEncoding archiveEncoding)
+    internal SeekableZipHeaderFactory(string? password, IArchiveEncoding archiveEncoding)
         : base(StreamingMode.Seekable, password, archiveEncoding) { }
 
-    internal IEnumerable<ZipHeader> ReadSeekableHeader(Stream stream)
+    internal async IAsyncEnumerable<ZipHeader> ReadSeekableHeaderAsync(Stream stream)
+    {
+        var reader = new AsyncBinaryReader(stream);
+
+        await SeekBackToHeaderAsync(stream, reader);
+
+        var eocd_location = stream.Position;
+        var entry = new DirectoryEndHeader();
+        await entry.Read(reader);
+
+        if (entry.IsZip64)
+        {
+            _zip64 = true;
+
+            // ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR should be before the EOCD
+            stream.Seek(eocd_location - ZIP64_EOCD_LENGTH - 4, SeekOrigin.Begin);
+            uint zip64_locator = await reader.ReadUInt32Async();
+            if (zip64_locator != ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR)
+            {
+                throw new ArchiveException("Failed to locate the Zip64 Directory Locator");
+            }
+
+            var zip64Locator = new Zip64DirectoryEndLocatorHeader();
+            await zip64Locator.Read(reader);
+
+            stream.Seek(zip64Locator.RelativeOffsetOfTheEndOfDirectoryRecord, SeekOrigin.Begin);
+            var zip64Signature = await reader.ReadUInt32Async();
+            if (zip64Signature != ZIP64_END_OF_CENTRAL_DIRECTORY)
+            {
+                throw new ArchiveException("Failed to locate the Zip64 Header");
+            }
+
+            var zip64Entry = new Zip64DirectoryEndHeader();
+            await zip64Entry.Read(reader);
+            stream.Seek(zip64Entry.DirectoryStartOffsetRelativeToDisk, SeekOrigin.Begin);
+        }
+        else
+        {
+            stream.Seek(entry.DirectoryStartOffsetRelativeToDisk, SeekOrigin.Begin);
+        }
+
+        var position = stream.Position;
+        while (true)
+        {
+            stream.Position = position;
+            var signature = await reader.ReadUInt32Async();
+            var nextHeader = await ReadHeader(signature, reader, _zip64);
+            position = stream.Position;
+
+            if (nextHeader is null)
+            {
+                yield break;
+            }
+
+            if (nextHeader is DirectoryEntryHeader entryHeader)
+            {
+                //entry could be zero bytes so we need to know that.
+                entryHeader.HasData = entryHeader.CompressedSize != 0;
+                yield return entryHeader;
+            }
+            else if (nextHeader is DirectoryEndHeader endHeader)
+            {
+                yield return endHeader;
+            }
+        }
+    }
+
+    internal IEnumerable<ZipHeader> ReadSeekableHeader(Stream stream, bool useSync)
     {
         var reader = new BinaryReader(stream);
 
@@ -85,6 +153,73 @@ internal sealed class SeekableZipHeaderFactory : ZipHeaderFactory
         }
     }
 
+    internal async IAsyncEnumerable<ZipHeader> ReadSeekableHeaderAsync(Stream stream, bool useSync)
+    {
+        var reader = new AsyncBinaryReader(stream);
+
+        await SeekBackToHeaderAsync(stream, reader);
+
+        var eocd_location = stream.Position;
+        var entry = new DirectoryEndHeader();
+        await entry.Read(reader);
+
+        if (entry.IsZip64)
+        {
+            _zip64 = true;
+
+            // ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR should be before the EOCD
+            stream.Seek(eocd_location - ZIP64_EOCD_LENGTH - 4, SeekOrigin.Begin);
+            var zip64_locator = await reader.ReadUInt32Async();
+            if (zip64_locator != ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR)
+            {
+                throw new ArchiveException("Failed to locate the Zip64 Directory Locator");
+            }
+
+            var zip64Locator = new Zip64DirectoryEndLocatorHeader();
+            await zip64Locator.Read(reader);
+
+            stream.Seek(zip64Locator.RelativeOffsetOfTheEndOfDirectoryRecord, SeekOrigin.Begin);
+            var zip64Signature = await reader.ReadUInt32Async();
+            if (zip64Signature != ZIP64_END_OF_CENTRAL_DIRECTORY)
+            {
+                throw new ArchiveException("Failed to locate the Zip64 Header");
+            }
+
+            var zip64Entry = new Zip64DirectoryEndHeader();
+            await zip64Entry.Read(reader);
+            stream.Seek(zip64Entry.DirectoryStartOffsetRelativeToDisk, SeekOrigin.Begin);
+        }
+        else
+        {
+            stream.Seek(entry.DirectoryStartOffsetRelativeToDisk, SeekOrigin.Begin);
+        }
+
+        var position = stream.Position;
+        while (true)
+        {
+            stream.Position = position;
+            var signature = await reader.ReadUInt32Async();
+            var nextHeader = await ReadHeader(signature, reader, _zip64);
+            position = stream.Position;
+
+            if (nextHeader is null)
+            {
+                yield break;
+            }
+
+            if (nextHeader is DirectoryEntryHeader entryHeader)
+            {
+                //entry could be zero bytes so we need to know that.
+                entryHeader.HasData = entryHeader.CompressedSize != 0;
+                yield return entryHeader;
+            }
+            else if (nextHeader is DirectoryEndHeader endHeader)
+            {
+                yield return endHeader;
+            }
+        }
+    }
+
     private static bool IsMatch(byte[] haystack, int position, byte[] needle)
     {
         for (var i = 0; i < needle.Length; i++)
@@ -98,6 +233,45 @@ internal sealed class SeekableZipHeaderFactory : ZipHeaderFactory
         return true;
     }
 
+    private static async ValueTask SeekBackToHeaderAsync(Stream stream, AsyncBinaryReader reader)
+    {
+        // Minimum EOCD length
+        if (stream.Length < MINIMUM_EOCD_LENGTH)
+        {
+            throw new ArchiveException(
+                "Could not find Zip file Directory at the end of the file. File may be corrupted."
+            );
+        }
+
+        var len =
+            stream.Length < MAX_SEARCH_LENGTH_FOR_EOCD
+                ? (int)stream.Length
+                : MAX_SEARCH_LENGTH_FOR_EOCD;
+        // We search for marker in reverse to find the first occurance
+        byte[] needle = { 0x06, 0x05, 0x4b, 0x50 };
+
+        stream.Seek(-len, SeekOrigin.End);
+
+        var seek = await reader.ReadBytesAsync(len);
+
+        // Search in reverse
+        Array.Reverse(seek);
+
+        // don't exclude the minimum eocd region, otherwise you fail to locate the header in empty zip files
+        var max_search_area = len; // - MINIMUM_EOCD_LENGTH;
+
+        for (var pos_from_end = 0; pos_from_end < max_search_area; ++pos_from_end)
+        {
+            if (IsMatch(seek, pos_from_end, needle))
+            {
+                stream.Seek(-pos_from_end, SeekOrigin.End);
+                return;
+            }
+        }
+
+        throw new ArchiveException("Failed to locate the Zip Header");
+    }
+
     private static void SeekBackToHeader(Stream stream, BinaryReader reader)
     {
         // Minimum EOCD length
@@ -163,4 +337,31 @@ internal sealed class SeekableZipHeaderFactory : ZipHeaderFactory
         }
         return localEntryHeader;
     }
+
+    internal async ValueTask<LocalEntryHeader> GetLocalHeaderAsync(
+        Stream stream,
+        DirectoryEntryHeader directoryEntryHeader
+    )
+    {
+        stream.Seek(directoryEntryHeader.RelativeOffsetOfEntryHeader, SeekOrigin.Begin);
+        var reader = new AsyncBinaryReader(stream);
+        var signature = await reader.ReadUInt32Async();
+        if (await ReadHeader(signature, reader, _zip64) is not LocalEntryHeader localEntryHeader)
+        {
+            throw new InvalidOperationException();
+        }
+
+        // populate fields only known from the DirectoryEntryHeader
+        localEntryHeader.HasData = directoryEntryHeader.HasData;
+        localEntryHeader.ExternalFileAttributes = directoryEntryHeader.ExternalFileAttributes;
+        localEntryHeader.Comment = directoryEntryHeader.Comment;
+
+        if (FlagUtility.HasFlag(localEntryHeader.Flags, HeaderFlags.UsePostDataDescriptor))
+        {
+            localEntryHeader.Crc = directoryEntryHeader.Crc;
+            localEntryHeader.CompressedSize = directoryEntryHeader.CompressedSize;
+            localEntryHeader.UncompressedSize = directoryEntryHeader.UncompressedSize;
+        }
+        return localEntryHeader;
+    }
 }

src/SharpCompress/Common/Zip/StreamingZipFilePart.cs

@@ -1,4 +1,6 @@
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Common.Zip.Headers;
 using SharpCompress.Compressors.Deflate;
 using SharpCompress.IO;
@@ -31,6 +33,28 @@ internal sealed class StreamingZipFilePart : ZipFilePart
         return _decompressionStream;
     }
 
+    internal override async ValueTask<Stream?> GetCompressedStreamAsync(
+        CancellationToken cancellationToken = default
+    )
+    {
+        if (!Header.HasData)
+        {
+            return Stream.Null;
+        }
+        _decompressionStream = await CreateDecompressionStreamAsync(
+                await GetCryptoStreamAsync(CreateBaseStream(), cancellationToken)
+                    .ConfigureAwait(false),
+                Header.CompressionMethod,
+                cancellationToken
+            )
+            .ConfigureAwait(false);
+        if (LeaveStreamOpen)
+        {
+            return SharpCompressStream.Create(_decompressionStream, leaveOpen: true);
+        }
+        return _decompressionStream;
+    }
+
     internal BinaryReader FixStreamedFileLocation(ref SharpCompressStream rewindableStream)
     {
         if (Header.IsDirectory)

src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.cs

@@ -2,6 +2,9 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using SharpCompress.Common;
 using SharpCompress.Common.Zip.Headers;
 using SharpCompress.IO;
 
@@ -13,7 +16,7 @@ internal class StreamingZipHeaderFactory : ZipHeaderFactory
 
     internal StreamingZipHeaderFactory(
         string? password,
-        ArchiveEncoding archiveEncoding,
+        IArchiveEncoding archiveEncoding,
         IEnumerable<ZipEntry>? entries
     )
         : base(StreamingMode.Streaming, password, archiveEncoding) => _entries = entries;
@@ -200,4 +203,331 @@ internal class StreamingZipHeaderFactory : ZipHeaderFactory
             yield return header;
         }
     }
+
+    /// <summary>
+    /// Reads ZIP headers asynchronously for streams that do not support synchronous reads.
+    /// </summary>
+    internal IAsyncEnumerable<ZipHeader> ReadStreamHeaderAsync(Stream stream) =>
+        new StreamHeaderAsyncEnumerable(this, stream);
+
+    /// <summary>
+    /// Invokes the shared async header parsing logic on the base factory.
+    /// </summary>
+    private ValueTask<ZipHeader?> ReadHeaderAsyncInternal(
+        uint headerBytes,
+        AsyncBinaryReader reader
+    ) => ReadHeader(headerBytes, reader);
+
+    /// <summary>
+    /// Exposes the last parsed local entry header to the async enumerator so it can handle streaming data descriptors.
+    /// </summary>
+    private LocalEntryHeader? LastEntryHeader
+    {
+        get => _lastEntryHeader;
+        set => _lastEntryHeader = value;
+    }
+
+    /// <summary>
+    /// Produces an async enumerator for streaming ZIP headers.
+    /// </summary>
+    private sealed class StreamHeaderAsyncEnumerable : IAsyncEnumerable<ZipHeader>
+    {
+        private readonly StreamingZipHeaderFactory _headerFactory;
+        private readonly Stream _stream;
+
+        public StreamHeaderAsyncEnumerable(StreamingZipHeaderFactory headerFactory, Stream stream)
+        {
+            _headerFactory = headerFactory;
+            _stream = stream;
+        }
+
+        public IAsyncEnumerator<ZipHeader> GetAsyncEnumerator(
+            CancellationToken cancellationToken = default
+        ) => new StreamHeaderAsyncEnumerator(_headerFactory, _stream, cancellationToken);
+    }
+
+    /// <summary>
+    /// Async implementation of <see cref="ReadStreamHeader"/> using <see cref="AsyncBinaryReader"/> to avoid sync reads.
+    /// </summary>
+    private sealed class StreamHeaderAsyncEnumerator : IAsyncEnumerator<ZipHeader>, IDisposable
+    {
+        private readonly StreamingZipHeaderFactory _headerFactory;
+        private readonly SharpCompressStream _rewindableStream;
+        private readonly AsyncBinaryReader _reader;
+        private readonly CancellationToken _cancellationToken;
+        private bool _completed;
+
+        public StreamHeaderAsyncEnumerator(
+            StreamingZipHeaderFactory headerFactory,
+            Stream stream,
+            CancellationToken cancellationToken
+        )
+        {
+            _headerFactory = headerFactory;
+            _rewindableStream = EnsureSharpCompressStream(stream);
+            _reader = new AsyncBinaryReader(_rewindableStream, leaveOpen: true);
+            _cancellationToken = cancellationToken;
+        }
+
+        private ZipHeader? _current;
+
+        public ZipHeader Current =>
+            _current ?? throw new InvalidOperationException("No current header is available.");
+
+        /// <summary>
+        /// Advances to the next ZIP header in the stream, honoring streaming data descriptors where applicable.
+        /// </summary>
+        public async ValueTask<bool> MoveNextAsync()
+        {
+            if (_completed)
+            {
+                return false;
+            }
+
+            while (true)
+            {
+                _cancellationToken.ThrowIfCancellationRequested();
+
+                uint headerBytes;
+                var lastEntryHeader = _headerFactory.LastEntryHeader;
+                if (
+                    lastEntryHeader != null
+                    && FlagUtility.HasFlag(lastEntryHeader.Flags, HeaderFlags.UsePostDataDescriptor)
+                )
+                {
+                    if (lastEntryHeader.Part is null)
+                    {
+                        continue;
+                    }
+
+                    var pos = _rewindableStream.CanSeek ? (long?)_rewindableStream.Position : null;
+
+                    var crc = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+                    if (crc == POST_DATA_DESCRIPTOR)
+                    {
+                        crc = await _reader
+                            .ReadUInt32Async(_cancellationToken)
+                            .ConfigureAwait(false);
+                    }
+                    lastEntryHeader.Crc = crc;
+
+                    //attempt 32bit read
+                    ulong compressedSize = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+                    ulong uncompressedSize = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+                    headerBytes = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+
+                    //check for zip64 sentinel or unexpected header
+                    bool isSentinel =
+                        compressedSize == 0xFFFFFFFF || uncompressedSize == 0xFFFFFFFF;
+                    bool isHeader = headerBytes == 0x04034b50 || headerBytes == 0x02014b50;
+
+                    if (!isHeader && !isSentinel)
+                    {
+                        //reshuffle into 64-bit values
+                        compressedSize = (uncompressedSize << 32) | compressedSize;
+                        uncompressedSize =
+                            ((ulong)headerBytes << 32)
+                            | await _reader
+                                .ReadUInt32Async(_cancellationToken)
+                                .ConfigureAwait(false);
+                        headerBytes = await _reader
+                            .ReadUInt32Async(_cancellationToken)
+                            .ConfigureAwait(false);
+                    }
+                    else if (isSentinel)
+                    {
+                        //standards-compliant zip64 descriptor
+                        compressedSize = await _reader
+                            .ReadUInt64Async(_cancellationToken)
+                            .ConfigureAwait(false);
+                        uncompressedSize = await _reader
+                            .ReadUInt64Async(_cancellationToken)
+                            .ConfigureAwait(false);
+                    }
+
+                    lastEntryHeader.CompressedSize = (long)compressedSize;
+                    lastEntryHeader.UncompressedSize = (long)uncompressedSize;
+
+                    if (pos.HasValue)
+                    {
+                        lastEntryHeader.DataStartPosition = pos - lastEntryHeader.CompressedSize;
+                    }
+                }
+                else if (lastEntryHeader != null && lastEntryHeader.IsZip64)
+                {
+                    if (lastEntryHeader.Part is null)
+                    {
+                        continue;
+                    }
+
+                    var pos = _rewindableStream.CanSeek ? (long?)_rewindableStream.Position : null;
+
+                    headerBytes = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+
+                    _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // version
+                    _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // flags
+                    _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // compressionMethod
+                    _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // lastModifiedDate
+                    _ = await _reader.ReadUInt16Async(_cancellationToken).ConfigureAwait(false); // lastModifiedTime
+
+                    var crc = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+
+                    if (crc == POST_DATA_DESCRIPTOR)
+                    {
+                        crc = await _reader
+                            .ReadUInt32Async(_cancellationToken)
+                            .ConfigureAwait(false);
+                    }
+                    lastEntryHeader.Crc = crc;
+
+                    // The DataDescriptor can be either 64bit or 32bit
+                    var compressedSize = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+                    var uncompressedSize = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+
+                    // Check if we have header or 64bit DataDescriptor
+                    var testHeader = !(headerBytes == 0x04034b50 || headerBytes == 0x02014b50);
+
+                    var test64Bit = ((long)uncompressedSize << 32) | compressedSize;
+                    if (test64Bit == lastEntryHeader.CompressedSize && testHeader)
+                    {
+                        lastEntryHeader.UncompressedSize =
+                            (
+                                (long)
+                                    await _reader
+                                        .ReadUInt32Async(_cancellationToken)
+                                        .ConfigureAwait(false) << 32
+                            ) | headerBytes;
+                        headerBytes = await _reader
+                            .ReadUInt32Async(_cancellationToken)
+                            .ConfigureAwait(false);
+                    }
+                    else
+                    {
+                        lastEntryHeader.UncompressedSize = uncompressedSize;
+                    }
+
+                    if (pos.HasValue)
+                    {
+                        lastEntryHeader.DataStartPosition = pos - lastEntryHeader.CompressedSize;
+
+                        // 4 = First 4 bytes of the entry header (i.e. 50 4B 03 04)
+                        _rewindableStream.Position = pos.Value + 4;
+                    }
+                }
+                else
+                {
+                    headerBytes = await _reader
+                        .ReadUInt32Async(_cancellationToken)
+                        .ConfigureAwait(false);
+                }
+
+                _headerFactory.LastEntryHeader = null;
+                var header = await _headerFactory
+                    .ReadHeaderAsyncInternal(headerBytes, _reader)
+                    .ConfigureAwait(false);
+                if (header is null)
+                {
+                    _completed = true;
+                    return false;
+                }
+
+                //entry could be zero bytes so we need to know that.
+                if (header.ZipHeaderType == ZipHeaderType.LocalEntry)
+                {
+                    var localHeader = (LocalEntryHeader)header;
+                    var directoryHeader = _headerFactory._entries?.FirstOrDefault(entry =>
+                        entry.Key == localHeader.Name
+                        && localHeader.CompressedSize == 0
+                        && localHeader.UncompressedSize == 0
+                        && localHeader.Crc == 0
+                        && localHeader.IsDirectory == false
+                    );
+
+                    if (directoryHeader != null)
+                    {
+                        localHeader.UncompressedSize = directoryHeader.Size;
+                        localHeader.CompressedSize = directoryHeader.CompressedSize;
+                        localHeader.Crc = (uint)directoryHeader.Crc;
+                    }
+
+                    // If we have CompressedSize, there is data to be read
+                    if (localHeader.CompressedSize > 0)
+                    {
+                        header.HasData = true;
+                    } // Check if zip is streaming ( Length is 0 and is declared in PostDataDescriptor )
+                    else if (localHeader.Flags.HasFlag(HeaderFlags.UsePostDataDescriptor))
+                    {
+                        var nextHeaderBytes = await _reader
+                            .ReadUInt32Async(_cancellationToken)
+                            .ConfigureAwait(false);
+                        ((IStreamStack)_rewindableStream).Rewind(sizeof(uint));
+
+                        // Check if next data is PostDataDescriptor, streamed file with 0 length
+                        header.HasData = !IsHeader(nextHeaderBytes);
+                    }
+                    else // We are not streaming and compressed size is 0, we have no data
+                    {
+                        header.HasData = false;
+                    }
+                }
+
+                _current = header;
+                return true;
+            }
+        }
+
+        public ValueTask DisposeAsync()
+        {
+            Dispose();
+            return default;
+        }
+
+        /// <summary>
+        /// Disposes the underlying reader (without closing the archive stream).
+        /// </summary>
+        public void Dispose()
+        {
+            _reader.Dispose();
+        }
+
+        /// <summary>
+        /// Ensures the stream is a <see cref="SharpCompressStream"/> so header parsing can use rewind/buffer helpers.
+        /// </summary>
+        private static SharpCompressStream EnsureSharpCompressStream(Stream stream)
+        {
+            if (stream is SharpCompressStream sharpCompressStream)
+            {
+                return sharpCompressStream;
+            }
+
+            // Ensure the stream is already a SharpCompressStream so the buffer/size is set.
+            // The original code wrapped this with RewindableStream; use SharpCompressStream so we can get the buffer size.
+            if (stream is SourceStream src)
+            {
+                return new SharpCompressStream(
+                    stream,
+                    src.ReaderOptions.LeaveStreamOpen,
+                    bufferSize: src.ReaderOptions.BufferSize
+                );
+            }
+
+            throw new ArgumentException("Stream must be a SharpCompressStream", nameof(stream));
+        }
+    }
 }

src/SharpCompress/Common/Zip/WinzipAesEncryptionData.cs

@@ -20,7 +20,7 @@ internal class WinzipAesEncryptionData
     {
         _keySize = keySize;
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD2_0
         var rfc2898 = new Rfc2898DeriveBytes(password, salt, RFC2898_ITERATIONS);
         KeyBytes = rfc2898.GetBytes(KeySizeInBytes);
         IvBytes = rfc2898.GetBytes(KeySizeInBytes);

src/SharpCompress/Common/Zip/ZipFilePart.cs

@@ -2,6 +2,8 @@ using System;
 using System.Buffers.Binary;
 using System.IO;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using SharpCompress.Common.Zip.Headers;
 using SharpCompress.Compressors;
 using SharpCompress.Compressors.BZip2;
@@ -13,8 +15,8 @@ using SharpCompress.Compressors.PPMd;
 using SharpCompress.Compressors.Reduce;
 using SharpCompress.Compressors.Shrink;
 using SharpCompress.Compressors.Xz;
+using SharpCompress.Compressors.ZStandard;
 using SharpCompress.IO;
-using ZstdSharp;
 
 namespace SharpCompress.Common.Zip;
 
@@ -264,4 +266,244 @@ internal abstract class ZipFilePart : FilePart
         }
         return plainStream;
     }
+
+    internal override async ValueTask<Stream?> GetCompressedStreamAsync(
+        CancellationToken cancellationToken = default
+    )
+    {
+        if (!Header.HasData)
+        {
+            return Stream.Null;
+        }
+        var decompressionStream = await CreateDecompressionStreamAsync(
+                await GetCryptoStreamAsync(CreateBaseStream(), cancellationToken)
+                    .ConfigureAwait(false),
+                Header.CompressionMethod,
+                cancellationToken
+            )
+            .ConfigureAwait(false);
+        if (LeaveStreamOpen)
+        {
+            return SharpCompressStream.Create(decompressionStream, leaveOpen: true);
+        }
+        return decompressionStream;
+    }
+
+    protected async Task<Stream> GetCryptoStreamAsync(
+        Stream plainStream,
+        CancellationToken cancellationToken = default
+    )
+    {
+        var isFileEncrypted = FlagUtility.HasFlag(Header.Flags, HeaderFlags.Encrypted);
+
+        if (Header.CompressedSize == 0 && isFileEncrypted)
+        {
+            throw new NotSupportedException("Cannot encrypt file with unknown size at start.");
+        }
+
+        if (
+            (
+                Header.CompressedSize == 0
+                && FlagUtility.HasFlag(Header.Flags, HeaderFlags.UsePostDataDescriptor)
+            ) || Header.IsZip64
+        )
+        {
+            plainStream = SharpCompressStream.Create(plainStream, leaveOpen: true); //make sure AES doesn't close
+        }
+        else
+        {
+            plainStream = new ReadOnlySubStream(plainStream, Header.CompressedSize); //make sure AES doesn't close
+        }
+
+        if (isFileEncrypted)
+        {
+            switch (Header.CompressionMethod)
+            {
+                case ZipCompressionMethod.None:
+                case ZipCompressionMethod.Shrink:
+                case ZipCompressionMethod.Reduce1:
+                case ZipCompressionMethod.Reduce2:
+                case ZipCompressionMethod.Reduce3:
+                case ZipCompressionMethod.Reduce4:
+                case ZipCompressionMethod.Deflate:
+                case ZipCompressionMethod.Deflate64:
+                case ZipCompressionMethod.BZip2:
+                case ZipCompressionMethod.LZMA:
+                case ZipCompressionMethod.PPMd:
+                {
+                    return new PkwareTraditionalCryptoStream(
+                        plainStream,
+                        await Header
+                            .ComposeEncryptionDataAsync(plainStream, cancellationToken)
+                            .ConfigureAwait(false),
+                        CryptoMode.Decrypt
+                    );
+                }
+
+                case ZipCompressionMethod.WinzipAes:
+                {
+                    if (Header.WinzipAesEncryptionData != null)
+                    {
+                        return new WinzipAesCryptoStream(
+                            plainStream,
+                            Header.WinzipAesEncryptionData,
+                            Header.CompressedSize - 10
+                        );
+                    }
+                    return plainStream;
+                }
+
+                default:
+                {
+                    throw new InvalidOperationException("Header.CompressionMethod is invalid");
+                }
+            }
+        }
+        return plainStream;
+    }
+
+    protected async Task<Stream> CreateDecompressionStreamAsync(
+        Stream stream,
+        ZipCompressionMethod method,
+        CancellationToken cancellationToken = default
+    )
+    {
+        switch (method)
+        {
+            case ZipCompressionMethod.None:
+            {
+                if (Header.CompressedSize is 0)
+                {
+                    return new DataDescriptorStream(stream);
+                }
+
+                return stream;
+            }
+            case ZipCompressionMethod.Shrink:
+            {
+                return new ShrinkStream(
+                    stream,
+                    CompressionMode.Decompress,
+                    Header.CompressedSize,
+                    Header.UncompressedSize
+                );
+            }
+            case ZipCompressionMethod.Reduce1:
+            {
+                return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 1);
+            }
+            case ZipCompressionMethod.Reduce2:
+            {
+                return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 2);
+            }
+            case ZipCompressionMethod.Reduce3:
+            {
+                return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 3);
+            }
+            case ZipCompressionMethod.Reduce4:
+            {
+                return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 4);
+            }
+            case ZipCompressionMethod.Explode:
+            {
+                return new ExplodeStream(
+                    stream,
+                    Header.CompressedSize,
+                    Header.UncompressedSize,
+                    Header.Flags
+                );
+            }
+
+            case ZipCompressionMethod.Deflate:
+            {
+                return new DeflateStream(stream, CompressionMode.Decompress);
+            }
+            case ZipCompressionMethod.Deflate64:
+            {
+                return new Deflate64Stream(stream, CompressionMode.Decompress);
+            }
+            case ZipCompressionMethod.BZip2:
+            {
+                return new BZip2Stream(stream, CompressionMode.Decompress, false);
+            }
+            case ZipCompressionMethod.LZMA:
+            {
+                if (FlagUtility.HasFlag(Header.Flags, HeaderFlags.Encrypted))
+                {
+                    throw new NotSupportedException("LZMA with pkware encryption.");
+                }
+                var buffer = new byte[4];
+                await stream.ReadFullyAsync(buffer, 0, 4, cancellationToken).ConfigureAwait(false);
+                var version = BinaryPrimitives.ReadUInt16LittleEndian(buffer.AsSpan(0, 2));
+                var propsSize = BinaryPrimitives.ReadUInt16LittleEndian(buffer.AsSpan(2, 2));
+                var props = new byte[propsSize];
+                await stream
+                    .ReadFullyAsync(props, 0, propsSize, cancellationToken)
+                    .ConfigureAwait(false);
+                return new LzmaStream(
+                    props,
+                    stream,
+                    Header.CompressedSize > 0 ? Header.CompressedSize - 4 - props.Length : -1,
+                    FlagUtility.HasFlag(Header.Flags, HeaderFlags.Bit1)
+                        ? -1
+                        : Header.UncompressedSize
+                );
+            }
+            case ZipCompressionMethod.Xz:
+            {
+                return new XZStream(stream);
+            }
+            case ZipCompressionMethod.ZStandard:
+            {
+                return new DecompressionStream(stream);
+            }
+            case ZipCompressionMethod.PPMd:
+            {
+                var props = new byte[2];
+                await stream.ReadFullyAsync(props, 0, 2, cancellationToken).ConfigureAwait(false);
+                return new PpmdStream(new PpmdProperties(props), stream, false);
+            }
+            case ZipCompressionMethod.WinzipAes:
+            {
+                var data = Header.Extra.SingleOrDefault(x => x.Type == ExtraDataType.WinZipAes);
+                if (data is null)
+                {
+                    throw new InvalidFormatException("No Winzip AES extra data found.");
+                }
+
+                if (data.Length != 7)
+                {
+                    throw new InvalidFormatException("Winzip data length is not 7.");
+                }
+
+                var compressedMethod = BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes);
+
+                if (compressedMethod != 0x01 && compressedMethod != 0x02)
+                {
+                    throw new InvalidFormatException(
+                        "Unexpected vendor version number for WinZip AES metadata"
+                    );
+                }
+
+                var vendorId = BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes.AsSpan(2));
+                if (vendorId != 0x4541)
+                {
+                    throw new InvalidFormatException(
+                        "Unexpected vendor ID for WinZip AES metadata"
+                    );
+                }
+
+                return await CreateDecompressionStreamAsync(
+                    stream,
+                    (ZipCompressionMethod)
+                        BinaryPrimitives.ReadUInt16LittleEndian(data.DataBytes.AsSpan(5)),
+                    cancellationToken
+                );
+            }
+            default:
+            {
+                throw new NotSupportedException("CompressionMethod: " + Header.CompressionMethod);
+            }
+        }
+    }
 }

src/SharpCompress/Common/Zip/ZipHeaderFactory.cs

@@ -1,6 +1,8 @@
 using System;
 using System.IO;
 using System.Linq;
+using System.Threading.Tasks;
+using SharpCompress;
 using SharpCompress.Common.Zip.Headers;
 using SharpCompress.IO;
 
@@ -21,12 +23,12 @@ internal class ZipHeaderFactory
     protected LocalEntryHeader? _lastEntryHeader;
     private readonly string? _password;
     private readonly StreamingMode _mode;
-    private readonly ArchiveEncoding _archiveEncoding;
+    private readonly IArchiveEncoding _archiveEncoding;
 
     protected ZipHeaderFactory(
         StreamingMode mode,
         string? password,
-        ArchiveEncoding archiveEncoding
+        IArchiveEncoding archiveEncoding
     )
     {
         _mode = mode;
@@ -34,6 +36,82 @@ internal class ZipHeaderFactory
         _archiveEncoding = archiveEncoding;
     }
 
+    protected async ValueTask<ZipHeader?> ReadHeader(
+        uint headerBytes,
+        AsyncBinaryReader reader,
+        bool zip64 = false
+    )
+    {
+        switch (headerBytes)
+        {
+            case ENTRY_HEADER_BYTES:
+            {
+                var entryHeader = new LocalEntryHeader(_archiveEncoding);
+                await entryHeader.Read(reader);
+                await LoadHeaderAsync(entryHeader, reader.BaseStream).ConfigureAwait(false);
+
+                _lastEntryHeader = entryHeader;
+                return entryHeader;
+            }
+            case DIRECTORY_START_HEADER_BYTES:
+            {
+                var entry = new DirectoryEntryHeader(_archiveEncoding);
+                await entry.Read(reader);
+                return entry;
+            }
+            case POST_DATA_DESCRIPTOR:
+            {
+                if (
+                    _lastEntryHeader != null
+                    && FlagUtility.HasFlag(
+                        _lastEntryHeader.NotNull().Flags,
+                        HeaderFlags.UsePostDataDescriptor
+                    )
+                )
+                {
+                    _lastEntryHeader.Crc = await reader.ReadUInt32Async();
+                    _lastEntryHeader.CompressedSize = zip64
+                        ? (long)await reader.ReadUInt64Async()
+                        : await reader.ReadUInt32Async();
+                    _lastEntryHeader.UncompressedSize = zip64
+                        ? (long)await reader.ReadUInt64Async()
+                        : await reader.ReadUInt32Async();
+                }
+                else
+                {
+                    await reader.ReadBytesAsync(zip64 ? 20 : 12);
+                }
+                return null;
+            }
+            case DIGITAL_SIGNATURE:
+                return null;
+            case DIRECTORY_END_HEADER_BYTES:
+            {
+                var entry = new DirectoryEndHeader();
+                await entry.Read(reader);
+                return entry;
+            }
+            case SPLIT_ARCHIVE_HEADER_BYTES:
+            {
+                return new SplitHeader();
+            }
+            case ZIP64_END_OF_CENTRAL_DIRECTORY:
+            {
+                var entry = new Zip64DirectoryEndHeader();
+                await entry.Read(reader);
+                return entry;
+            }
+            case ZIP64_END_OF_CENTRAL_DIRECTORY_LOCATOR:
+            {
+                var entry = new Zip64DirectoryEndLocatorHeader();
+                await entry.Read(reader);
+                return entry;
+            }
+            default:
+                return null;
+        }
+    }
+
     protected ZipHeader? ReadHeader(uint headerBytes, BinaryReader reader, bool zip64 = false)
     {
         switch (headerBytes)
@@ -205,4 +283,82 @@ internal class ZipHeaderFactory
 
         //}
     }
+
+    /// <summary>
+    /// Loads encryption metadata and stream positioning for a header using async reads where needed.
+    /// </summary>
+    private async ValueTask LoadHeaderAsync(ZipFileEntry entryHeader, Stream stream)
+    {
+        if (FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.Encrypted))
+        {
+            if (
+                !entryHeader.IsDirectory
+                && entryHeader.CompressedSize == 0
+                && FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.UsePostDataDescriptor)
+            )
+            {
+                throw new NotSupportedException(
+                    "SharpCompress cannot currently read non-seekable Zip Streams with encrypted data that has been written in a non-seekable manner."
+                );
+            }
+
+            if (_password is null)
+            {
+                throw new CryptographicException("No password supplied for encrypted zip.");
+            }
+
+            entryHeader.Password = _password;
+
+            if (entryHeader.CompressionMethod == ZipCompressionMethod.WinzipAes)
+            {
+                var data = entryHeader.Extra.SingleOrDefault(x =>
+                    x.Type == ExtraDataType.WinZipAes
+                );
+                if (data != null)
+                {
+                    var keySize = (WinzipAesKeySize)data.DataBytes[4];
+
+                    var salt = new byte[WinzipAesEncryptionData.KeyLengthInBytes(keySize) / 2];
+                    var passwordVerifyValue = new byte[2];
+                    await stream.ReadExactAsync(salt, 0, salt.Length).ConfigureAwait(false);
+                    await stream.ReadExactAsync(passwordVerifyValue, 0, 2).ConfigureAwait(false);
+
+                    entryHeader.WinzipAesEncryptionData = new WinzipAesEncryptionData(
+                        keySize,
+                        salt,
+                        passwordVerifyValue,
+                        _password
+                    );
+
+                    entryHeader.CompressedSize -= (uint)(salt.Length + 2);
+                }
+            }
+        }
+
+        if (entryHeader.IsDirectory)
+        {
+            return;
+        }
+
+        switch (_mode)
+        {
+            case StreamingMode.Seekable:
+            {
+                entryHeader.DataStartPosition = stream.Position;
+                stream.Position += entryHeader.CompressedSize;
+                break;
+            }
+
+            case StreamingMode.Streaming:
+            {
+                entryHeader.PackedStream = stream;
+                break;
+            }
+
+            default:
+            {
+                throw new InvalidFormatException("Invalid StreamingMode");
+            }
+        }
+    }
 }

src/SharpCompress/Compressors/ADC/ADCBase.cs

@@ -104,7 +104,7 @@ public static class ADCBase
     /// <param name="bufferSize">Max size for decompressed data</param>
     /// <param name="cancellationToken">Cancellation token</param>
     /// <returns>Result containing bytes read and decompressed data</returns>
-    public static async Task<AdcDecompressResult> DecompressAsync(
+    public static async ValueTask<AdcDecompressResult> DecompressAsync(
         byte[] input,
         int bufferSize = 262144,
         CancellationToken cancellationToken = default
@@ -117,7 +117,7 @@ public static class ADCBase
     /// <param name="bufferSize">Max size for decompressed data</param>
     /// <param name="cancellationToken">Cancellation token</param>
     /// <returns>Result containing bytes read and decompressed data</returns>
-    public static async Task<AdcDecompressResult> DecompressAsync(
+    public static async ValueTask<AdcDecompressResult> DecompressAsync(
         Stream input,
         int bufferSize = 262144,
         CancellationToken cancellationToken = default

src/SharpCompress/Compressors/Deflate/ZlibBaseStream.cs

@@ -400,7 +400,7 @@ internal class ZlibBaseStream : Stream, IStreamStack
         }
     }
 
-    private async Task finishAsync(CancellationToken cancellationToken = default)
+    private async ValueTask finishAsync(CancellationToken cancellationToken = default)
     {
         if (_z is null)
         {
@@ -646,7 +646,9 @@ internal class ZlibBaseStream : Stream, IStreamStack
         return _encoding.GetString(buffer, 0, buffer.Length);
     }
 
-    private async Task<string> ReadZeroTerminatedStringAsync(CancellationToken cancellationToken)
+    private async ValueTask<string> ReadZeroTerminatedStringAsync(
+        CancellationToken cancellationToken
+    )
     {
         var list = new List<byte>();
         var done = false;
@@ -729,7 +731,9 @@ internal class ZlibBaseStream : Stream, IStreamStack
         return totalBytesRead;
     }
 
-    private async Task<int> _ReadAndValidateGzipHeaderAsync(CancellationToken cancellationToken)
+    private async ValueTask<int> _ReadAndValidateGzipHeaderAsync(
+        CancellationToken cancellationToken
+    )
     {
         var totalBytesRead = 0;