private void WriteClientHello(ref WriterWrapper writer)
{
writer.WriteBigEndian(RecordVersion);
_secretSchedule.GenerateClientRandom();
writer.Write(_secretSchedule.ClientRandom);
writer.WriteBigEndian <byte>(0);
writer.Write(_cryptoProvider.CipherSuites.GetCipherSuites());
writer.WriteBigEndian <byte>(0);
}
public void WriteExtension(ref WriterWrapper writer)
{
//While we don't currently support renegotiation if the client does we should
//respond to say we don't want any negotiation to give clarity to our position
//and reduce an attack vector for a MITM attack
writer.WriteBigEndian(ExtensionType.renegotiation_info);
writer.WriteBigEndian <ushort>(1);
writer.WriteBigEndian <byte>(0);
}
public static void WriteHandshakeFrame(this ConnectionStates.ConnectionState state, int contentSize, BufferExtensions.ContentWriter content, HandshakeType handshakeType)
{
var writer = new WriterWrapper(state.Connection.HandshakeOutput.Writer.Alloc(), state.HandshakeHash);
writer.WriteBigEndian(handshakeType);
writer.WriteBigEndian((UInt24)contentSize);
content(ref writer);
Debug.Assert((writer.BytesWritten - 4) == contentSize);
writer.Commit();
}
public void ClientSendKey(ref WriterWrapper writer)
{
writer.WriteBigEndian((byte)ClientSendSize);
Span <byte> span = stackalloc byte[ClientSendSize];
PublicKeySpan(span);
writer.Write(span);
}
public static void WriteCertificates(ref WriterWrapper buffer, ICertificate certificate)
{
var size = GetCertificatesSize(certificate);
buffer.WriteBigEndian((UInt24)size);
WriteCertificate(ref buffer, certificate.CertificateData);
foreach (var b in certificate.CertificateChain)
{
WriteCertificate(ref buffer, b);
}
}
private static void WriteCertificate(ref WriterWrapper writer, Span <byte> certData)
{
writer.WriteBigEndian((UInt24)certData.Length);
writer.Write(certData);
}