89 lines
2.8 KiB
C#
89 lines
2.8 KiB
C#
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// Transport Security Layer (TLS)
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// Copyright (c) 2003-2004 Carlos Guzman Alvarez
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// Copyright (C) 2006 Novell, Inc (http://www.novell.com)
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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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using System;
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using System.Security.Cryptography;
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using Mono.Security.Cryptography;
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namespace Mono.Security.Protocol.Tls.Handshake.Server
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{
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internal class TlsClientFinished : HandshakeMessage
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{
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#region Constructors
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public TlsClientFinished(Context context, byte[] buffer)
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: base(context, HandshakeType.Finished, buffer)
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{
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}
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#endregion
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#region Protected Methods
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protected override void ProcessAsSsl3()
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{
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// Compute handshake messages hashes
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HashAlgorithm hash = new SslHandshakeHash(this.Context.MasterSecret);
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TlsStream data = new TlsStream();
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data.Write(this.Context.HandshakeMessages.ToArray());
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data.Write((int)0x434C4E54);
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hash.TransformFinalBlock(data.ToArray(), 0, (int)data.Length);
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data.Reset();
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byte[] clientHash = this.ReadBytes((int)Length);
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byte[] serverHash = hash.Hash;
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// Check client prf against server prf
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if (!Compare (clientHash, serverHash))
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{
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throw new TlsException(AlertDescription.DecryptError, "Decrypt error.");
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}
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}
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protected override void ProcessAsTls1()
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{
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byte[] clientPRF = this.ReadBytes((int)this.Length);
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HashAlgorithm hash = new MD5SHA1();
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byte[] data = this.Context.HandshakeMessages.ToArray ();
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byte[] digest = hash.ComputeHash (data, 0, data.Length);
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byte[] serverPRF = this.Context.Current.Cipher.PRF(
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this.Context.MasterSecret, "client finished", digest, 12);
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// Check client prf against server prf
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if (!Compare (clientPRF, serverPRF))
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{
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throw new TlsException(AlertDescription.DecryptError, "Decrypt error.");
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}
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}
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#endregion
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}
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}
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