1 // Transport Security Layer (TLS)
2 // Copyright (c) 2003-2004 Carlos Guzman Alvarez
5 // Permission is hereby granted, free of charge, to any person obtaining
6 // a copy of this software and associated documentation files (the
7 // "Software"), to deal in the Software without restriction, including
8 // without limitation the rights to use, copy, modify, merge, publish,
9 // distribute, sublicense, and/or sell copies of the Software, and to
10 // permit persons to whom the Software is furnished to do so, subject to
11 // the following conditions:
13 // The above copyright notice and this permission notice shall be
14 // included in all copies or substantial portions of the Software.
16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 // WITH THE SOFTWARE OR THE USE OR OTHER 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 : HandshakeMessage
36 public TlsClientFinished(Context context)
37 : base(context, HandshakeType.Finished)
45 public override void Update()
53 #region Protected Methods
55 protected override void ProcessAsSsl3()
57 // Compute handshake messages hashes
58 HashAlgorithm hash = new SslHandshakeHash(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));