protected virtual TlsServerHello GenerateServerHello()
{
var serverUnixTime = HandshakeParameters.GetUnixTime();
HandshakeParameters.ServerRandom = Context.Session.GetSecureRandomBytes(32);
TlsBuffer.WriteInt32(HandshakeParameters.ServerRandom.Buffer, 0, serverUnixTime);
return(new TlsServerHello(
Context.NegotiatedProtocol, HandshakeParameters.ServerRandom,
HandshakeParameters.SessionId, PendingCrypto.Cipher.Code, HandshakeParameters.ActiveExtensions));
}
SecureBuffer CreateParameterBuffer(HandshakeParameters hsp)
{
var length = 4 + publicBytes.Length;
var buffer = new TlsBuffer(64 + length);
buffer.Write(hsp.ClientRandom.Buffer);
buffer.Write(hsp.ServerRandom.Buffer);
buffer.Write((byte)curveType);
buffer.Write((short)namedCurve);
buffer.Write((byte)publicBytes.Length);
buffer.Write(publicBytes);
return(new SecureBuffer(buffer.Buffer));
}
public static SignatureAndHashAlgorithm SelectSignatureType(HandshakeParameters handshakeParameters)
{
if (handshakeParameters.SignatureAlgorithms != null)
{
return(SelectSignatureType(handshakeParameters.SignatureAlgorithms));
}
else if (handshakeParameters.ClientCertificateParameters != null)
{
return(SelectSignatureType(handshakeParameters.ClientCertificateParameters.SignatureAndHashAlgorithms));
}
else
{
return(new SignatureAndHashAlgorithm(HashAlgorithmType.Sha256, SignatureAlgorithmType.Rsa));
}
}
SecureBuffer CreateParameterBuffer(HandshakeParameters hsp)
{
var length = P.Length + G.Length + Y.Length + 6;
var buffer = new TlsBuffer(64 + length);
buffer.Write(hsp.ClientRandom.Buffer);
buffer.Write(hsp.ServerRandom.Buffer);
buffer.Write((short)P.Length);
buffer.Write(P);
buffer.Write((short)G.Length);
buffer.Write(G);
buffer.Write((short)Y.Length);
buffer.Write(Y);
return(new SecureBuffer(buffer.Buffer));
}
protected virtual TlsClientHello GenerateClientHello()
{
var clientUnixTime = HandshakeParameters.GetUnixTime();
HandshakeParameters.ClientRandom = Context.Session.GetSecureRandomBytes(32);
TlsBuffer.WriteInt32(HandshakeParameters.ClientRandom.Buffer, 0, clientUnixTime);
var requestedUserCiphers = Config.UserSettings != null ? Config.UserSettings.RequestedCiphers : null;
CipherSuiteCollection requestedCiphers;
if (requestedUserCiphers != null)
{
requestedCiphers = new CipherSuiteCollection(Config.RequestedProtocol, requestedUserCiphers);
}
else
{
requestedCiphers = CipherSuiteFactory.GetDefaultCiphers(Config.RequestedProtocol);
}
if (requestedCiphers.Protocol != Config.RequestedProtocol)
{
throw new TlsException(AlertDescription.ProtocolVersion);
}
HandshakeParameters.SupportedCiphers = requestedCiphers.Clone();
if (Config.EnableSecureRenegotiation && !Session.SecureRenegotiation && ((Config.RenegotiationFlags & RenegotiationFlags.SendCipherSpecCode) != 0))
{
HandshakeParameters.SupportedCiphers.AddSCSV();
}
if (ServerNameExtension.IsLegalHostName(Config.TargetHost))
{
HandshakeParameters.RequestedExtensions.Add(new ServerNameExtension(Config.TargetHost));
}
if (Config.EnableSecureRenegotiation && (Session.SecureRenegotiation || ((Config.RenegotiationFlags & RenegotiationFlags.SendClientHelloExtension) != 0)))
{
HandshakeParameters.RequestedExtensions.Add(RenegotiationExtension.CreateClient(Context));
}
if (UserSettings.HasClientCertificateParameters)
{
HandshakeParameters.RequestedExtensions.Add(new SignatureAlgorithmsExtension(UserSettings.ClientCertificateParameters.SignatureAndHashAlgorithms));
}
return(new TlsClientHello(
Config.RequestedProtocol, HandshakeParameters.ClientRandom, HandshakeParameters.SessionId,
HandshakeParameters.SupportedCiphers.ToArray(), HandshakeParameters.RequestedExtensions));
}
protected virtual TlsClientHello GenerateClientHello()
{
var clientUnixTime = HandshakeParameters.GetUnixTime();
TlsBuffer.WriteInt32(HandshakeParameters.ClientRandom.Buffer, 0, clientUnixTime);
if (ServerNameExtension.IsLegalHostName(Config.TargetHost))
{
HandshakeParameters.RequestedExtensions.Add(new ServerNameExtension(Config.TargetHost));
}
if (Config.EnableSecureRenegotiation && (Session.SecureRenegotiation || ((Config.RenegotiationFlags & RenegotiationFlags.SendClientHelloExtension) != 0)))
{
HandshakeParameters.RequestedExtensions.Add(RenegotiationExtension.CreateClient(Context));
}
if (Session.SignatureParameters != null)
{
HandshakeParameters.RequestedExtensions.Add(new SignatureAlgorithmsExtension(Session.SignatureParameters));
}
return(new TlsClientHello(
Config.RequestedProtocol, HandshakeParameters.ClientRandom, HandshakeParameters.SessionId,
HandshakeParameters.SupportedCiphers.ToArray(), HandshakeParameters.RequestedExtensions));
}
SecureBuffer CreateParameterBuffer (HandshakeParameters hsp)
{
var length = 4 + publicBytes.Length;
var buffer = new TlsBuffer (64 + length);
buffer.Write (hsp.ClientRandom.Buffer);
buffer.Write (hsp.ServerRandom.Buffer);
buffer.Write ((byte)curveType);
buffer.Write ((short)namedCurve);
buffer.Write ((byte)publicBytes.Length);
buffer.Write (publicBytes);
return new SecureBuffer (buffer.Buffer);
}
SecureBuffer CreateParameterBuffer (HandshakeParameters hsp)
{
var length = P.Length + G.Length + Y.Length + 6;
var buffer = new TlsBuffer (64 + length);
buffer.Write (hsp.ClientRandom.Buffer);
buffer.Write (hsp.ServerRandom.Buffer);
buffer.Write ((short)P.Length);
buffer.Write (P);
buffer.Write ((short)G.Length);
buffer.Write (G);
buffer.Write ((short)Y.Length);
buffer.Write (Y);
return new SecureBuffer (buffer.Buffer);
}
