1 // Transport Security Layer (TLS)
2 // Copyright (c) 2003-2004 Carlos Guzman Alvarez
3 // Copyright (C) 2006 Novell, Inc (http://www.novell.com)
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
.Server
32 internal class TlsClientFinished
: HandshakeMessage
36 public TlsClientFinished(Context context
, byte[] buffer
)
37 : base(context
, HandshakeType
.Finished
, buffer
)
43 #region Protected Methods
45 protected override void ProcessAsSsl3()
47 // Compute handshake messages hashes
48 HashAlgorithm hash
= new SslHandshakeHash(this.Context
.MasterSecret
);
50 TlsStream data
= new TlsStream();
51 data
.Write(this.Context
.HandshakeMessages
.ToArray());
52 data
.Write((int)0x434C4E54);
54 hash
.TransformFinalBlock(data
.ToArray(), 0, (int)data
.Length
);
58 byte[] clientHash
= this.ReadBytes((int)Length
);
59 byte[] serverHash
= hash
.Hash
;
61 // Check client prf against server prf
62 if (!Compare (clientHash
, serverHash
))
64 throw new TlsException(AlertDescription
.DecryptError
, "Decrypt error.");
68 protected override void ProcessAsTls1()
70 byte[] clientPRF
= this.ReadBytes((int)this.Length
);
71 HashAlgorithm hash
= new MD5SHA1();
73 byte[] data
= this.Context
.HandshakeMessages
.ToArray ();
74 byte[] digest
= hash
.ComputeHash (data
, 0, data
.Length
);
76 byte[] serverPRF
= this.Context
.Current
.Cipher
.PRF(
77 this.Context
.MasterSecret
, "client finished", digest
, 12);
79 // Check client prf against server prf
80 if (!Compare (clientPRF
, serverPRF
))
82 throw new TlsException(AlertDescription
.DecryptError
, "Decrypt error.");