protected override byte[] GetClientHello()
{
if (m_State != HandshakeType.Nothing && m_State != HandshakeType.Finished)
{
throw new SslException(AlertDescription.UnexpectedMessage, "ClientHello message must be the first message or must be preceded by a Finished message.");
}
m_IsNegotiating = true;
m_State = HandshakeType.ClientHello;
byte[] ciphers = CipherSuites.GetCipherAlgorithmBytes(m_Options.AllowedAlgorithms);
byte[] compr = CompressionAlgorithm.GetCompressionAlgorithmBytes(m_Options.AllowedAlgorithms);
HandshakeMessage temp = new HandshakeMessage(HandshakeType.ClientHello, new byte[38 + ciphers.Length + compr.Length]);
m_ClientTime = GetUnixTime();
m_ClientRandom = new byte[28];
m_RNG.GetBytes(m_ClientRandom);
ProtocolVersion pv = CompatibilityLayer.GetMaxProtocol(m_Options.Protocol);
temp.fragment[0] = pv.major;
temp.fragment[1] = pv.minor;
Array.Copy(m_ClientTime, 0, temp.fragment, 2, 4);
Array.Copy(m_ClientRandom, 0, temp.fragment, 6, 28);
temp.fragment[34] = 0; // do not resume a session, and do not let the other side cache it
temp.fragment[35] = (byte)(ciphers.Length / 256);
temp.fragment[36] = (byte)(ciphers.Length % 256);
Array.Copy(ciphers, 0, temp.fragment, 37, ciphers.Length);
temp.fragment[37 + ciphers.Length] = (byte)compr.Length;
Array.Copy(compr, 0, temp.fragment, 38 + ciphers.Length, compr.Length);
byte[] ret = temp.ToBytes();
UpdateHashes(ret, HashUpdate.All); // client hello message
return(m_RecordLayer.EncryptBytes(ret, 0, ret.Length, ContentType.Handshake));
}
protected override byte[] GetClientHello()
{
if (m_State != HandshakeType.Nothing && m_State != HandshakeType.Finished)
{
throw new SslException(AlertDescription.UnexpectedMessage, "ClientHello message must be the first message or must be preceded by a Finished message.");
}
m_IsNegotiating = true;
m_State = HandshakeType.ClientHello;
byte[] ciphers = CipherSuites.GetCipherAlgorithmBytes(m_Options.AllowedAlgorithms);
byte[] compr = CompressionAlgorithm.GetCompressionAlgorithmBytes(m_Options.AllowedAlgorithms);
MemoryStream clientHello = new MemoryStream();
m_ClientTime = GetUnixTime();
m_ClientRandom = new byte[28];
m_RNG.GetBytes(m_ClientRandom);
ProtocolVersion pv = CompatibilityLayer.GetMaxProtocol(m_Options.Protocol);
clientHello.WriteByte(pv.major);
clientHello.WriteByte(pv.minor);
clientHello.Write(m_ClientTime, 0, m_ClientTime.Length);
clientHello.Write(m_ClientRandom, 0, m_ClientRandom.Length);
clientHello.WriteByte(0);
clientHello.WriteByte((byte)(ciphers.Length / 256));
clientHello.WriteByte((byte)(ciphers.Length % 256));
clientHello.Write(ciphers, 0, ciphers.Length);
clientHello.WriteByte((byte)compr.Length);
clientHello.Write(compr, 0, compr.Length);
if (this.clientHelloExts != null)
{
this.clientHelloExts.WriteExtensions(clientHello, ConnectionEnd.Client);
}
HandshakeMessage hm = new HandshakeMessage(HandshakeType.ClientHello, clientHello.ToArray());
byte[] ret = hm.ToBytes();
UpdateHashes(ret, HashUpdate.All); // client hello message
return(m_RecordLayer.EncryptBytes(ret, 0, ret.Length, ContentType.Handshake));
}