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General code refactor.

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This commit is contained in:
Natalia Portillo
2021-08-17 21:23:22 +01:00
parent da3cbf28f4
commit 7fdadfa84f
15 changed files with 641 additions and 642 deletions
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1064
.editorconfig
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84
Aaru.Checksums.csproj
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@@ -54,28 +54,28 @@
<ConsolePause>false</ConsolePause>
</PropertyGroup>
<ItemGroup>
<Reference Include="System" />
<Reference Include="System"/>
</ItemGroup>
<ItemGroup>
<Compile Include="CRC16CCITTContext.cs" />
<Compile Include="CRC16IBMContext.cs" />
<Compile Include="Register.cs" />
<Compile Include="SpamSumContext.cs" />
<Compile Include="Adler32Context.cs" />
<Compile Include="CDChecksums.cs" />
<Compile Include="CRC16Context.cs" />
<Compile Include="CRC32Context.cs" />
<Compile Include="CRC64Context.cs" />
<Compile Include="FletcherContext.cs" />
<Compile Include="MD5Context.cs" />
<Compile Include="ReedSolomon.cs" />
<Compile Include="SHA1Context.cs" />
<Compile Include="SHA256Context.cs" />
<Compile Include="SHA384Context.cs" />
<Compile Include="SHA512Context.cs" />
<Compile Include="CRC16CCITTContext.cs"/>
<Compile Include="CRC16IBMContext.cs"/>
<Compile Include="Register.cs"/>
<Compile Include="SpamSumContext.cs"/>
<Compile Include="Adler32Context.cs"/>
<Compile Include="CDChecksums.cs"/>
<Compile Include="CRC16Context.cs"/>
<Compile Include="CRC32Context.cs"/>
<Compile Include="CRC64Context.cs"/>
<Compile Include="FletcherContext.cs"/>
<Compile Include="MD5Context.cs"/>
<Compile Include="ReedSolomon.cs"/>
<Compile Include="SHA1Context.cs"/>
<Compile Include="SHA256Context.cs"/>
<Compile Include="SHA384Context.cs"/>
<Compile Include="SHA512Context.cs"/>
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\Aaru.CommonTypes\Aaru.CommonTypes.csproj" />
<ProjectReference Include="..\Aaru.CommonTypes\Aaru.CommonTypes.csproj"/>
<ProjectReference Include="..\Aaru.Helpers\Aaru.Helpers.csproj">
<Project>{F8BDF57B-1571-4CD0-84B3-B422088D359A}</Project>
<Name>Aaru.Helpers</Name>
@@ -100,32 +100,32 @@
<MonoDevelop>
<Properties>
<Policies>
<StandardHeader IncludeInNewFiles="True" Text="/***************************************************************************&#xA;Aaru Data Preservation Suite&#xA;----------------------------------------------------------------------------&#xA; &#xA;Filename : ${FileName}&#xA;Author(s) : ${AuthorName} &lt;${AuthorEmail}&gt;&#xA;&#xA;Component : Component&#xA; &#xA;--[ Description ] ----------------------------------------------------------&#xA; &#xA; Description&#xA; &#xA;--[ License ] --------------------------------------------------------------&#xA; &#xA; This library is free software; you can redistribute it and/or modify&#xA; it under the terms of the GNU Lesser General Public License as&#xA; published by the Free Software Foundation; either version 2.1 of the&#xA; License, or (at your option) any later version.&#xA;&#xA; This library is distributed in the hope that it will be useful, but&#xA; WITHOUT ANY WARRANTY; without even the implied warranty of&#xA; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU&#xA; Lesser General Public License for more details.&#xA;&#xA; You should have received a copy of the GNU Lesser General Public&#xA; License along with this library; if not, see &lt;http://www.gnu.org/licenses/&gt;.&#xA;&#xA;----------------------------------------------------------------------------&#xA;Copyright © 2011-${Year} ${CopyrightHolder}&#xA;****************************************************************************/" />
<TextStylePolicy FileWidth="120" TabWidth="4" IndentWidth="4" RemoveTrailingWhitespace="True" NoTabsAfterNonTabs="False" EolMarker="Native" TabsToSpaces="True" scope="text/x-csharp" />
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<StandardHeader IncludeInNewFiles="True" Text="/***************************************************************************&#xA;Aaru Data Preservation Suite&#xA;----------------------------------------------------------------------------&#xA; &#xA;Filename : ${FileName}&#xA;Author(s) : ${AuthorName} &lt;${AuthorEmail}&gt;&#xA;&#xA;Component : Component&#xA; &#xA;--[ Description ] ----------------------------------------------------------&#xA; &#xA; Description&#xA; &#xA;--[ License ] --------------------------------------------------------------&#xA; &#xA; This library is free software; you can redistribute it and/or modify&#xA; it under the terms of the GNU Lesser General Public License as&#xA; published by the Free Software Foundation; either version 2.1 of the&#xA; License, or (at your option) any later version.&#xA;&#xA; This library is distributed in the hope that it will be useful, but&#xA; WITHOUT ANY WARRANTY; without even the implied warranty of&#xA; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU&#xA; Lesser General Public License for more details.&#xA;&#xA; You should have received a copy of the GNU Lesser General Public&#xA; License along with this library; if not, see &lt;http://www.gnu.org/licenses/&gt;.&#xA;&#xA;----------------------------------------------------------------------------&#xA;Copyright © 2011-${Year} ${CopyrightHolder}&#xA;****************************************************************************/"/>
<TextStylePolicy FileWidth="120" TabWidth="4" IndentWidth="4" RemoveTrailingWhitespace="True" NoTabsAfterNonTabs="False" EolMarker="Native" TabsToSpaces="True" scope="text/x-csharp"/>
<CSharpFormattingPolicy IndentBlock="True" IndentBraces="False" IndentSwitchSection="True" IndentSwitchCaseSection="True" LabelPositioning="OneLess" NewLinesForBracesInTypes="True" NewLinesForBracesInMethods="True" NewLinesForBracesInProperties="True" NewLinesForBracesInAccessors="True" NewLinesForBracesInAnonymousMethods="True" NewLinesForBracesInControlBlocks="True" NewLinesForBracesInAnonymousTypes="True" NewLinesForBracesInObjectCollectionArrayInitializers="True" NewLinesForBracesInLambdaExpressionBody="True" NewLineForElse="True" NewLineForCatch="True" NewLineForFinally="True" NewLineForMembersInObjectInit="True" NewLineForMembersInAnonymousTypes="True" NewLineForClausesInQuery="True" SpacingAfterMethodDeclarationName="False" SpaceWithinMethodDeclarationParenthesis="False" SpaceBetweenEmptyMethodDeclarationParentheses="False" SpaceAfterMethodCallName="False" SpaceWithinMethodCallParentheses="False" SpaceBetweenEmptyMethodCallParentheses="False" SpaceWithinExpressionParentheses="False" SpaceWithinCastParentheses="False" SpaceWithinOtherParentheses="False" SpaceAfterCast="False" SpacesIgnoreAroundVariableDeclaration="False" SpaceBeforeOpenSquareBracket="False" SpaceBetweenEmptySquareBrackets="False" SpaceWithinSquareBrackets="False" SpaceAfterColonInBaseTypeDeclaration="True" SpaceAfterComma="True" SpaceAfterDot="False" SpaceAfterSemicolonsInForStatement="True" SpaceBeforeColonInBaseTypeDeclaration="True" SpaceBeforeComma="False" SpaceBeforeDot="False" SpaceBeforeSemicolonsInForStatement="False" SpacingAroundBinaryOperator="Single" WrappingPreserveSingleLine="True" WrappingKeepStatementsOnSingleLine="True" PlaceSystemDirectiveFirst="True" SpaceAfterControlFlowStatementKeyword="False" scope="text/x-csharp"/>
</Policies>
</Properties>
</MonoDevelop>
</ProjectExtensions>
<PropertyGroup Condition="$(TargetFramework.StartsWith('net4')) and '$(OS)' == 'Unix'">
<!-- When compiling .NET SDK 2.0 projects targeting .NET 4.x on Mono using 'dotnet build' you -->
<!-- have to teach MSBuild where the Mono copy of the reference asssemblies is -->
<!-- Look in the standard install locations -->
<BaseFrameworkPathOverrideForMono Condition="'$(BaseFrameworkPathOverrideForMono)' == '' AND EXISTS('/Library/Frameworks/Mono.framework/Versions/Current/lib/mono')">/Library/Frameworks/Mono.framework/Versions/Current/lib/mono</BaseFrameworkPathOverrideForMono>
<BaseFrameworkPathOverrideForMono Condition="'$(BaseFrameworkPathOverrideForMono)' == '' AND EXISTS('/usr/lib/mono')">/usr/lib/mono</BaseFrameworkPathOverrideForMono>
<BaseFrameworkPathOverrideForMono Condition="'$(BaseFrameworkPathOverrideForMono)' == '' AND EXISTS('/usr/local/lib/mono')">/usr/local/lib/mono</BaseFrameworkPathOverrideForMono>
<!-- If we found Mono reference assemblies, then use them -->
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net40'">$(BaseFrameworkPathOverrideForMono)/4.0-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net45'">$(BaseFrameworkPathOverrideForMono)/4.5-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net451'">$(BaseFrameworkPathOverrideForMono)/4.5.1-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net452'">$(BaseFrameworkPathOverrideForMono)/4.5.2-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net46'">$(BaseFrameworkPathOverrideForMono)/4.6-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net461'">$(BaseFrameworkPathOverrideForMono)/4.6.1-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net462'">$(BaseFrameworkPathOverrideForMono)/4.6.2-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net47'">$(BaseFrameworkPathOverrideForMono)/4.7-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net471'">$(BaseFrameworkPathOverrideForMono)/4.7.1-api</FrameworkPathOverride>
<EnableFrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != ''">true</EnableFrameworkPathOverride>
<!-- Add the Facades directory. Not sure how else to do this. Necessary at least for .NET 4.5 -->
<AssemblySearchPaths Condition="'$(BaseFrameworkPathOverrideForMono)' != ''">$(FrameworkPathOverride)/Facades;$(AssemblySearchPaths)</AssemblySearchPaths>
</PropertyGroup>
<PropertyGroup Condition="$(TargetFramework.StartsWith('net4')) and '$(OS)' == 'Unix'">
<!-- When compiling .NET SDK 2.0 projects targeting .NET 4.x on Mono using 'dotnet build' you -->
<!-- have to teach MSBuild where the Mono copy of the reference asssemblies is -->
<!-- Look in the standard install locations -->
<BaseFrameworkPathOverrideForMono Condition="'$(BaseFrameworkPathOverrideForMono)' == '' AND EXISTS('/Library/Frameworks/Mono.framework/Versions/Current/lib/mono')">/Library/Frameworks/Mono.framework/Versions/Current/lib/mono</BaseFrameworkPathOverrideForMono>
<BaseFrameworkPathOverrideForMono Condition="'$(BaseFrameworkPathOverrideForMono)' == '' AND EXISTS('/usr/lib/mono')">/usr/lib/mono</BaseFrameworkPathOverrideForMono>
<BaseFrameworkPathOverrideForMono Condition="'$(BaseFrameworkPathOverrideForMono)' == '' AND EXISTS('/usr/local/lib/mono')">/usr/local/lib/mono</BaseFrameworkPathOverrideForMono>
<!-- If we found Mono reference assemblies, then use them -->
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net40'">$(BaseFrameworkPathOverrideForMono)/4.0-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net45'">$(BaseFrameworkPathOverrideForMono)/4.5-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net451'">$(BaseFrameworkPathOverrideForMono)/4.5.1-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net452'">$(BaseFrameworkPathOverrideForMono)/4.5.2-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net46'">$(BaseFrameworkPathOverrideForMono)/4.6-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net461'">$(BaseFrameworkPathOverrideForMono)/4.6.1-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net462'">$(BaseFrameworkPathOverrideForMono)/4.6.2-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net47'">$(BaseFrameworkPathOverrideForMono)/4.7-api</FrameworkPathOverride>
<FrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND '$(TargetFramework)' == 'net471'">$(BaseFrameworkPathOverrideForMono)/4.7.1-api</FrameworkPathOverride>
<EnableFrameworkPathOverride Condition="'$(BaseFrameworkPathOverrideForMono)' != ''">true</EnableFrameworkPathOverride>
<!-- Add the Facades directory. Not sure how else to do this. Necessary at least for .NET 4.5 -->
<AssemblySearchPaths Condition="'$(BaseFrameworkPathOverrideForMono)' != ''">$(FrameworkPathOverride)/Facades;$(AssemblySearchPaths)</AssemblySearchPaths>
</PropertyGroup>
</Project>

1
Adler32Context.cs
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@@ -37,6 +37,7 @@ using Aaru.Helpers;
namespace Aaru.Checksums
{
/// <inheritdoc />
/// <summary>Implements the Adler-32 algorithm</summary>
public sealed class Adler32Context : IChecksum
{

33
CDChecksums.cs
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@@ -45,21 +45,32 @@ namespace Aaru.Checksums
static byte[] _eccBTable;
static uint[] _edcTable;
/// <summary>
/// Checks the EDC and ECC of a CD sector
/// </summary>
/// <summary>Checks the EDC and ECC of a CD sector</summary>
/// <param name="buffer">CD sector</param>
/// <returns><c>true</c> if all checks were correct, <c>false</c> if any of them weren't, and <c>null</c> if none of them are present.</returns>
/// <returns>
/// <c>true</c> if all checks were correct, <c>false</c> if any of them weren't, and <c>null</c> if none of them
/// are present.
/// </returns>
public static bool? CheckCdSector(byte[] buffer) => CheckCdSector(buffer, out _, out _, out _);
/// <summary>
/// Checks the EDC and ECC of a CD sector
/// </summary>
/// <summary>Checks the EDC and ECC of a CD sector</summary>
/// <param name="buffer">CD sector</param>
/// <param name="correctEccP"><c>true</c> if ECC P is correct, <c>false</c> if it isn't, and <c>null</c> if there is no ECC P in sector.</param>
/// <param name="correctEccQ"><c>true</c> if ECC Q is correct, <c>false</c> if it isn't, and <c>null</c> if there is no ECC Q in sector.</param>
/// <param name="correctEdc"><c>true</c> if EDC is correct, <c>false</c> if it isn't, and <c>null</c> if there is no EDC in sector.</param>
/// <returns><c>true</c> if all checks were correct, <c>false</c> if any of them weren't, and <c>null</c> if none of them are present.</returns>
/// <param name="correctEccP">
/// <c>true</c> if ECC P is correct, <c>false</c> if it isn't, and <c>null</c> if there is no ECC
/// P in sector.
/// </param>
/// <param name="correctEccQ">
/// <c>true</c> if ECC Q is correct, <c>false</c> if it isn't, and <c>null</c> if there is no ECC
/// Q in sector.
/// </param>
/// <param name="correctEdc">
/// <c>true</c> if EDC is correct, <c>false</c> if it isn't, and <c>null</c> if there is no EDC in
/// sector.
/// </param>
/// <returns>
/// <c>true</c> if all checks were correct, <c>false</c> if any of them weren't, and <c>null</c> if none of them
/// are present.
/// </returns>
public static bool? CheckCdSector(byte[] buffer, out bool? correctEccP, out bool? correctEccQ,
out bool? correctEdc)
{

12
CRC16CCITTContext.cs
View File

@@ -33,9 +33,7 @@
namespace Aaru.Checksums
{
/// <inheritdoc />
/// <summary>
/// Implements the CRC16 algorithm with CCITT polynomial and seed
/// </summary>
/// <summary>Implements the CRC16 algorithm with CCITT polynomial and seed</summary>
public sealed class CRC16CCITTContext : Crc16Context
{
/// <summary>CCITT CRC16 polynomial</summary>
@@ -66,9 +64,7 @@ namespace Aaru.Checksums
0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
};
/// <summary>
/// Initializes an instance of the CRC16 with CCITT polynomial and seed.
/// </summary>
/// <summary>Initializes an instance of the CRC16 with CCITT polynomial and seed.</summary>
/// <inheritdoc />
public CRC16CCITTContext() : base(CRC16_CCITT_POLY, CRC16_CCITT_SEED, _ccittCrc16Table, true) {}
@@ -99,9 +95,7 @@ namespace Aaru.Checksums
/// <param name="hash">Byte array of the hash value.</param>
public static string Data(byte[] data, out byte[] hash) => Data(data, (uint)data.Length, out hash);
/// <summary>
/// Calculates the CCITT CRC16 of the specified buffer with the specified parameters
/// </summary>
/// <summary>Calculates the CCITT CRC16 of the specified buffer with the specified parameters</summary>
/// <param name="buffer">Buffer</param>
public static ushort Calculate(byte[] buffer) =>
Calculate(buffer, CRC16_CCITT_POLY, CRC16_CCITT_SEED, _ccittCrc16Table, true);

6
CRC16Context.cs
View File

@@ -113,7 +113,7 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial;
else
entry = entry >> 1;
entry >>= 1;
table[i] = (ushort)entry;
}
@@ -215,9 +215,7 @@ namespace Aaru.Checksums
return crc16Output.ToString();
}
/// <summary>
/// Calculates the CRC16 of the specified buffer with the specified parameters
/// </summary>
/// <summary>Calculates the CRC16 of the specified buffer with the specified parameters</summary>
/// <param name="buffer">Buffer</param>
/// <param name="polynomial">Polynomial</param>
/// <param name="seed">Seed</param>

12
CRC16IBMContext.cs
View File

@@ -33,9 +33,7 @@
namespace Aaru.Checksums
{
/// <inheritdoc />
/// <summary>
/// Implements the CRC16 algorithm with IBM polynomial and seed
/// </summary>
/// <summary>Implements the CRC16 algorithm with IBM polynomial and seed</summary>
public sealed class CRC16IBMContext : Crc16Context
{
const ushort CRC16_IBM_POLY = 0xA001;
@@ -65,9 +63,7 @@ namespace Aaru.Checksums
0x8641, 0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
};
/// <summary>
/// Initializes an instance of the CRC16 with IBM polynomial and seed.
/// </summary>
/// <summary>Initializes an instance of the CRC16 with IBM polynomial and seed.</summary>
/// <inheritdoc />
public CRC16IBMContext() : base(CRC16_IBM_POLY, CRC16_IBM_SEED, _ibmCrc16Table, false) {}
@@ -98,9 +94,7 @@ namespace Aaru.Checksums
/// <param name="hash">Byte array of the hash value.</param>
public static string Data(byte[] data, out byte[] hash) => Data(data, (uint)data.Length, out hash);
/// <summary>
/// Calculates the IBM CRC16 of the specified buffer with the specified parameters
/// </summary>
/// <summary>Calculates the IBM CRC16 of the specified buffer with the specified parameters</summary>
/// <param name="buffer">Buffer</param>
public static ushort Calculate(byte[] buffer) =>
Calculate(buffer, CRC16_IBM_POLY, CRC16_IBM_SEED, _ibmCrc16Table, false);

25
CRC32Context.cs
View File

@@ -37,6 +37,7 @@ using Aaru.Helpers;
namespace Aaru.Checksums
{
/// <inheritdoc />
/// <summary>Implements a CRC32 algorithm</summary>
public sealed class Crc32Context : IChecksum
{
@@ -63,7 +64,7 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ CRC32_ISO_POLY;
else
entry = entry >> 1;
entry >>= 1;
_table[i] = entry;
}
@@ -85,7 +86,7 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial;
else
entry = entry >> 1;
entry >>= 1;
_table[i] = entry;
}
@@ -146,7 +147,7 @@ namespace Aaru.Checksums
{
var fileStream = new FileStream(filename, FileMode.Open);
uint localhashInt = seed;
uint localHashInt = seed;
uint[] localTable = new uint[256];
@@ -158,16 +159,16 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial;
else
entry = entry >> 1;
entry >>= 1;
localTable[i] = entry;
}
for(int i = 0; i < fileStream.Length; i++)
localhashInt = (localhashInt >> 8) ^ localTable[fileStream.ReadByte() ^ (localhashInt & 0xff)];
localHashInt = (localHashInt >> 8) ^ localTable[fileStream.ReadByte() ^ (localHashInt & 0xff)];
localhashInt ^= seed;
hash = BigEndianBitConverter.GetBytes(localhashInt);
localHashInt ^= seed;
hash = BigEndianBitConverter.GetBytes(localHashInt);
var crc32Output = new StringBuilder();
@@ -194,7 +195,7 @@ namespace Aaru.Checksums
/// <param name="seed">CRC seed</param>
public static string Data(byte[] data, uint len, out byte[] hash, uint polynomial, uint seed)
{
uint localhashInt = seed;
uint localHashInt = seed;
uint[] localTable = new uint[256];
@@ -206,16 +207,16 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial;
else
entry = entry >> 1;
entry >>= 1;
localTable[i] = entry;
}
for(int i = 0; i < len; i++)
localhashInt = (localhashInt >> 8) ^ localTable[data[i] ^ (localhashInt & 0xff)];
localHashInt = (localHashInt >> 8) ^ localTable[data[i] ^ (localHashInt & 0xff)];
localhashInt ^= seed;
hash = BigEndianBitConverter.GetBytes(localhashInt);
localHashInt ^= seed;
hash = BigEndianBitConverter.GetBytes(localHashInt);
var crc32Output = new StringBuilder();

32
CRC64Context.cs
View File

@@ -41,13 +41,9 @@ namespace Aaru.Checksums
/// <summary>Implements a CRC64 algorithm</summary>
public sealed class Crc64Context : IChecksum
{
/// <summary>
/// ECMA CRC64 polynomial
/// </summary>
/// <summary>ECMA CRC64 polynomial</summary>
public const ulong CRC64_ECMA_POLY = 0xC96C5795D7870F42;
/// <summary>
/// ECMA CRC64 seed
/// </summary>
/// <summary>ECMA CRC64 seed</summary>
public const ulong CRC64_ECMA_SEED = 0xFFFFFFFFFFFFFFFF;
readonly ulong _finalSeed;
@@ -69,7 +65,7 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ CRC64_ECMA_POLY;
else
entry = entry >> 1;
entry >>= 1;
_table[i] = entry;
}
@@ -92,7 +88,7 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial;
else
entry = entry >> 1;
entry >>= 1;
_table[i] = entry;
}
@@ -155,7 +151,7 @@ namespace Aaru.Checksums
{
var fileStream = new FileStream(filename, FileMode.Open);
ulong localhashInt = seed;
ulong localHashInt = seed;
ulong[] localTable = new ulong[256];
@@ -167,16 +163,16 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial;
else
entry = entry >> 1;
entry >>= 1;
localTable[i] = entry;
}
for(int i = 0; i < fileStream.Length; i++)
localhashInt = (localhashInt >> 8) ^ localTable[(ulong)fileStream.ReadByte() ^ (localhashInt & 0xffL)];
localHashInt = (localHashInt >> 8) ^ localTable[(ulong)fileStream.ReadByte() ^ (localHashInt & 0xffL)];
localhashInt ^= seed;
hash = BigEndianBitConverter.GetBytes(localhashInt);
localHashInt ^= seed;
hash = BigEndianBitConverter.GetBytes(localHashInt);
var crc64Output = new StringBuilder();
@@ -203,7 +199,7 @@ namespace Aaru.Checksums
/// <param name="seed">CRC seed</param>
public static string Data(byte[] data, uint len, out byte[] hash, ulong polynomial, ulong seed)
{
ulong localhashInt = seed;
ulong localHashInt = seed;
ulong[] localTable = new ulong[256];
@@ -215,16 +211,16 @@ namespace Aaru.Checksums
if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial;
else
entry = entry >> 1;
entry >>= 1;
localTable[i] = entry;
}
for(int i = 0; i < len; i++)
localhashInt = (localhashInt >> 8) ^ localTable[data[i] ^ (localhashInt & 0xff)];
localHashInt = (localHashInt >> 8) ^ localTable[data[i] ^ (localHashInt & 0xff)];
localhashInt ^= seed;
hash = BigEndianBitConverter.GetBytes(localhashInt);
localHashInt ^= seed;
hash = BigEndianBitConverter.GetBytes(localHashInt);
var crc64Output = new StringBuilder();

1
FletcherContext.cs
View File

@@ -164,6 +164,7 @@ namespace Aaru.Checksums
public static string Data(byte[] data, out byte[] hash) => Data(data, (uint)data.Length, out hash);
}
/// <inheritdoc />
/// <summary>Implements the Fletcher-16 algorithm</summary>
public sealed class Fletcher16Context : IChecksum
{

9
Register.cs
View File

@@ -48,10 +48,9 @@ namespace Aaru.Checksums
public sealed class Register : IPluginRegister
{
/// <inheritdoc />
public List<Type> GetAllChecksumPlugins() => Assembly.
GetExecutingAssembly().GetTypes().
Where(t => t.GetInterfaces().Contains(typeof(IChecksum))).
Where(t => t.IsClass).ToList();
public List<Type> GetAllChecksumPlugins() => Assembly.GetExecutingAssembly().GetTypes().
Where(t => t.GetInterfaces().Contains(typeof(IChecksum))).
Where(t => t.IsClass).ToList();
/// <inheritdoc />
public List<Type> GetAllFilesystemPlugins() => null;
@@ -80,4 +79,4 @@ namespace Aaru.Checksums
/// <inheritdoc />
public List<Type> GetAllArchivePlugins() => null;
}
}
}

1
SHA1Context.cs
View File

@@ -38,6 +38,7 @@ using Aaru.CommonTypes.Interfaces;
namespace Aaru.Checksums
{
/// <inheritdoc />
/// <summary>Wraps up .NET SHA1 implementation to a Init(), Update(), Final() context.</summary>
public sealed class Sha1Context : IChecksum
{

1
SHA256Context.cs
View File

@@ -38,6 +38,7 @@ using Aaru.CommonTypes.Interfaces;
namespace Aaru.Checksums
{
/// <inheritdoc />
/// <summary>Wraps up .NET SHA256 implementation to a Init(), Update(), Final() context.</summary>
public sealed class Sha256Context : IChecksum
{

1
SHA384Context.cs
View File

@@ -38,6 +38,7 @@ using Aaru.CommonTypes.Interfaces;
namespace Aaru.Checksums
{
/// <inheritdoc />
/// <summary>Wraps up .NET SHA384 implementation to a Init(), Update(), Final() context.</summary>
public sealed class Sha384Context : IChecksum
{

1
SHA512Context.cs
View File

@@ -38,6 +38,7 @@ using Aaru.CommonTypes.Interfaces;
namespace Aaru.Checksums
{
/// <inheritdoc />
/// <summary>Wraps up .NET SHA512 implementation to a Init(), Update(), Final() context.</summary>
public sealed class Sha512Context : IChecksum
{