149 lines
4.2 KiB
C#
149 lines
4.2 KiB
C#
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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/* Transport Security Layer (TLS)
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* Copyright (c) 2003-2004 Carlos Guzman Alvarez
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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using System;
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using System.Security.Cryptography;
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using Mono.Security.Protocol.Tls;
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namespace Mono.Security.Cryptography
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{
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internal class MD5SHA1 : HashAlgorithm
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{
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#region Fields
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private HashAlgorithm md5;
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private HashAlgorithm sha;
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private bool hashing;
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#endregion
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#region Constructors
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public MD5SHA1() : base()
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{
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this.md5 = MD5.Create();
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this.sha = SHA1.Create();
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// Set HashSizeValue
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this.HashSizeValue = this.md5.HashSize + this.sha.HashSize;
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}
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#endregion
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#region Methods
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public override void Initialize()
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{
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this.md5.Initialize();
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this.sha.Initialize();
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this.hashing = false;
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}
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protected override byte[] HashFinal()
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{
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if (!hashing)
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{
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this.hashing = true;
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}
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// Finalize the original hash
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this.md5.TransformFinalBlock(new byte[0], 0, 0);
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this.sha.TransformFinalBlock(new byte[0], 0, 0);
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byte[] hash = new byte[36];
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Buffer.BlockCopy(this.md5.Hash, 0, hash, 0, 16);
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Buffer.BlockCopy(this.sha.Hash, 0, hash, 16, 20);
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return hash;
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}
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protected override void HashCore(
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byte[] array,
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int ibStart,
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int cbSize)
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{
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if (!hashing)
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{
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hashing = true;
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}
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this.md5.TransformBlock(array, ibStart, cbSize, array, ibStart);
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this.sha.TransformBlock(array, ibStart, cbSize, array, ibStart);
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}
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public byte[] CreateSignature(RSA rsa)
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{
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if (rsa == null)
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{
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throw new CryptographicUnexpectedOperationException ("missing key");
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}
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RSASslSignatureFormatter f = new RSASslSignatureFormatter(rsa);
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f.SetHashAlgorithm("MD5SHA1");
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return f.CreateSignature(this.Hash);
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}
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public bool VerifySignature(RSA rsa, byte[] rgbSignature)
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{
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if (rsa == null)
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{
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throw new CryptographicUnexpectedOperationException ("missing key");
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}
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if (rgbSignature == null)
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{
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throw new ArgumentNullException ("rgbSignature");
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}
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RSASslSignatureDeformatter d = new RSASslSignatureDeformatter(rsa);
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d.SetHashAlgorithm("MD5SHA1");
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return d.VerifySignature(this.Hash, rgbSignature);
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}
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#endregion
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}
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}
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