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// Transport Security Layer (TLS)
// Copyright (c) 2003-2004 Carlos Guzman Alvarez
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Security.Cryptography.X509Certificates;
using System.Security.Cryptography;
using Mono.Security.Cryptography;
namespace Mono.Security.Protocol.Tls.Handshake.Server
{
internal class TlsClientCertificateVerify : HandshakeMessage
{
#region Constructors
public TlsClientCertificateVerify(Context context, byte[] buffer)
: base(context, HandshakeType.CertificateVerify, buffer)
{
}
#endregion
#region Protected Methods
protected override void ProcessAsSsl3()
{
ServerContext context = (ServerContext)this.Context;
int length = this.ReadInt16 ();
byte[] signature = this.ReadBytes (length);
// Verify signature
SslHandshakeHash hash = new SslHandshakeHash(context.MasterSecret);
hash.TransformFinalBlock(
context.HandshakeMessages.ToArray(),
0,
(int)context.HandshakeMessages.Length);
if (!hash.VerifySignature(context.ClientSettings.CertificateRSA, signature))
{
throw new TlsException(AlertDescription.HandshakeFailiure, "Handshake Failure.");
}
}
protected override void ProcessAsTls1()
{
ServerContext context = (ServerContext)this.Context;
int length = this.ReadInt16 ();
byte[] signature = this.ReadBytes (length);
// Verify signature
MD5SHA1 hash = new MD5SHA1();
hash.ComputeHash(
context.HandshakeMessages.ToArray(),
0,
(int)context.HandshakeMessages.Length);
if (!hash.VerifySignature(context.ClientSettings.CertificateRSA, signature))
{
throw new TlsException (AlertDescription.HandshakeFailiure, "Handshake Failure.");
}
}
#endregion
}
}
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