1 /* Transport Security Layer (TLS)
2 * Copyright (c) 2003-2004 Carlos Guzman Alvarez
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without restriction,
7 * including without limitation the rights to use, copy, modify, merge,
8 * publish, distribute, sublicense, and/or sell copies of the Software,
9 * and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included
13 * in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
17 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
26 using System.Security.Cryptography;
28 using Mono.Security.Cryptography;
30 namespace Mono.Security.Protocol.Tls.Handshake.Client
32 internal class TlsClientFinished : TlsHandshakeMessage
36 public TlsClientFinished(Context context)
37 : base(context, TlsHandshakeType.Finished)
45 public override void Update()
53 #region Protected Methods
55 protected override void ProcessAsSsl3()
57 // Compute handshake messages hashes
58 HashAlgorithm hash = new TlsSslHandshakeHash(this.Context.MasterSecret);
60 TlsStream data = new TlsStream();
61 data.Write(this.Context.HandshakeMessages.ToArray());
62 data.Write((int)0x434C4E54);
64 hash.TransformFinalBlock(data.ToArray(), 0, (int)data.Length);
66 this.Write(hash.Hash);
71 protected override void ProcessAsTls1()
73 // Compute handshake messages hash
74 HashAlgorithm hash = new MD5SHA1();
76 this.Context.HandshakeMessages.ToArray(),
78 (int)this.Context.HandshakeMessages.Length);
81 Write(this.Context.Cipher.PRF(this.Context.MasterSecret, "client finished", hash.Hash, 12));