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https://github.com/aaru-dps/Aaru.Checksums.git
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Move to file scoped namespaces.
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179
SHA256Context.cs
179
SHA256Context.cs
@@ -36,99 +36,98 @@ using System.Security.Cryptography;
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using System.Text;
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using Aaru.CommonTypes.Interfaces;
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namespace Aaru.Checksums
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namespace Aaru.Checksums;
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/// <inheritdoc />
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/// <summary>Wraps up .NET SHA256 implementation to a Init(), Update(), Final() context.</summary>
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public sealed class Sha256Context : IChecksum
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{
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readonly SHA256 _provider;
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/// <summary>Initializes the SHA256 hash provider</summary>
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public Sha256Context() => _provider = SHA256.Create();
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/// <inheritdoc />
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/// <summary>Wraps up .NET SHA256 implementation to a Init(), Update(), Final() context.</summary>
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public sealed class Sha256Context : IChecksum
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/// <summary>Updates the hash with data.</summary>
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/// <param name="data">Data buffer.</param>
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/// <param name="len">Length of buffer to hash.</param>
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public void Update(byte[] data, uint len) => _provider.TransformBlock(data, 0, (int)len, data, 0);
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/// <inheritdoc />
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/// <summary>Updates the hash with data.</summary>
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/// <param name="data">Data buffer.</param>
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public void Update(byte[] data) => Update(data, (uint)data.Length);
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/// <inheritdoc />
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/// <summary>Returns a byte array of the hash value.</summary>
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public byte[] Final()
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{
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readonly SHA256 _provider;
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_provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
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/// <summary>Initializes the SHA256 hash provider</summary>
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public Sha256Context() => _provider = SHA256.Create();
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/// <inheritdoc />
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/// <summary>Updates the hash with data.</summary>
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/// <param name="data">Data buffer.</param>
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/// <param name="len">Length of buffer to hash.</param>
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public void Update(byte[] data, uint len) => _provider.TransformBlock(data, 0, (int)len, data, 0);
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/// <inheritdoc />
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/// <summary>Updates the hash with data.</summary>
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/// <param name="data">Data buffer.</param>
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public void Update(byte[] data) => Update(data, (uint)data.Length);
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/// <inheritdoc />
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/// <summary>Returns a byte array of the hash value.</summary>
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public byte[] Final()
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{
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_provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
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return _provider.Hash;
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}
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/// <inheritdoc />
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/// <summary>Returns a hexadecimal representation of the hash value.</summary>
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public string End()
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{
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_provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
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var sha256Output = new StringBuilder();
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foreach(byte h in _provider.Hash)
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sha256Output.Append(h.ToString("x2"));
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return sha256Output.ToString();
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}
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/// <summary>Gets the hash of a file</summary>
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/// <param name="filename">File path.</param>
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public static byte[] File(string filename)
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{
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var localSha256Provider = SHA256.Create();
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var fileStream = new FileStream(filename, FileMode.Open);
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byte[] result = localSha256Provider.ComputeHash(fileStream);
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fileStream.Close();
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return result;
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}
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/// <summary>Gets the hash of a file in hexadecimal and as a byte array.</summary>
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/// <param name="filename">File path.</param>
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/// <param name="hash">Byte array of the hash value.</param>
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public static string File(string filename, out byte[] hash)
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{
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var localSha256Provider = SHA256.Create();
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var fileStream = new FileStream(filename, FileMode.Open);
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hash = localSha256Provider.ComputeHash(fileStream);
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var sha256Output = new StringBuilder();
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foreach(byte h in hash)
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sha256Output.Append(h.ToString("x2"));
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fileStream.Close();
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return sha256Output.ToString();
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}
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/// <summary>Gets the hash of the specified data buffer.</summary>
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/// <param name="data">Data buffer.</param>
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/// <param name="len">Length of the data buffer to hash.</param>
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/// <param name="hash">Byte array of the hash value.</param>
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public static string Data(byte[] data, uint len, out byte[] hash)
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{
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var localSha256Provider = SHA256.Create();
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hash = localSha256Provider.ComputeHash(data, 0, (int)len);
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var sha256Output = new StringBuilder();
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foreach(byte h in hash)
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sha256Output.Append(h.ToString("x2"));
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return sha256Output.ToString();
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}
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/// <summary>Gets the hash of the specified data buffer.</summary>
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/// <param name="data">Data buffer.</param>
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/// <param name="hash">Byte array of the hash value.</param>
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public static string Data(byte[] data, out byte[] hash) => Data(data, (uint)data.Length, out hash);
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return _provider.Hash;
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}
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/// <inheritdoc />
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/// <summary>Returns a hexadecimal representation of the hash value.</summary>
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public string End()
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{
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_provider.TransformFinalBlock(Array.Empty<byte>(), 0, 0);
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var sha256Output = new StringBuilder();
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foreach(byte h in _provider.Hash)
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sha256Output.Append(h.ToString("x2"));
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return sha256Output.ToString();
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}
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/// <summary>Gets the hash of a file</summary>
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/// <param name="filename">File path.</param>
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public static byte[] File(string filename)
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{
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var localSha256Provider = SHA256.Create();
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var fileStream = new FileStream(filename, FileMode.Open);
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byte[] result = localSha256Provider.ComputeHash(fileStream);
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fileStream.Close();
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return result;
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}
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/// <summary>Gets the hash of a file in hexadecimal and as a byte array.</summary>
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/// <param name="filename">File path.</param>
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/// <param name="hash">Byte array of the hash value.</param>
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public static string File(string filename, out byte[] hash)
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{
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var localSha256Provider = SHA256.Create();
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var fileStream = new FileStream(filename, FileMode.Open);
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hash = localSha256Provider.ComputeHash(fileStream);
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var sha256Output = new StringBuilder();
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foreach(byte h in hash)
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sha256Output.Append(h.ToString("x2"));
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fileStream.Close();
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return sha256Output.ToString();
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}
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/// <summary>Gets the hash of the specified data buffer.</summary>
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/// <param name="data">Data buffer.</param>
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/// <param name="len">Length of the data buffer to hash.</param>
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/// <param name="hash">Byte array of the hash value.</param>
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public static string Data(byte[] data, uint len, out byte[] hash)
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{
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var localSha256Provider = SHA256.Create();
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hash = localSha256Provider.ComputeHash(data, 0, (int)len);
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var sha256Output = new StringBuilder();
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foreach(byte h in hash)
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sha256Output.Append(h.ToString("x2"));
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return sha256Output.ToString();
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}
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/// <summary>Gets the hash of the specified data buffer.</summary>
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/// <param name="data">Data buffer.</param>
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/// <param name="hash">Byte array of the hash value.</param>
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public static string Data(byte[] data, out byte[] hash) => Data(data, (uint)data.Length, out hash);
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}
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