public unsafe static WritableBuffer SendKeyExchange(WritableBuffer buffer, IConnectionStateTls12 connectionState)
{
var messageLength = 4 + connectionState.KeyShare.KeyExchangeSize;
buffer.Ensure(messageLength);
var bookMark = buffer.Memory;
buffer.WriteBigEndian(ECCurveType.named_curve);
buffer.WriteBigEndian(connectionState.KeyShare.NamedGroup);
buffer.WriteBigEndian((byte)connectionState.KeyShare.KeyExchangeSize);
connectionState.KeyShare.WritePublicKey(ref buffer);
buffer.WriteBigEndian(connectionState.SignatureScheme);
BufferExtensions.WriteVector <ushort>(ref buffer, (writer, state) =>
{
var tempBuffer = stackalloc byte[connectionState.ClientRandom.Length * 2 + messageLength];
var tmpSpan = new Span <byte>(tempBuffer, connectionState.ClientRandom.Length * 2 + messageLength);
connectionState.ClientRandom.CopyTo(tmpSpan);
tmpSpan = tmpSpan.Slice(connectionState.ClientRandom.Length);
connectionState.ServerRandom.CopyTo(tmpSpan);
tmpSpan = tmpSpan.Slice(connectionState.ServerRandom.Length);
bookMark.Span.Slice(0, messageLength).CopyTo(tmpSpan);
connectionState.Certificate.SignHash(connectionState.CryptoProvider.HashProvider,
connectionState.SignatureScheme, ref writer, tempBuffer, connectionState.ClientRandom.Length * 2 + messageLength);
return(writer);
}, connectionState);
return(buffer);
}
public static WritableBuffer SendCertificates(WritableBuffer buffer, IConnectionStateTls12 connectionState)
{
var startOfMessage = buffer.BytesWritten;
BufferExtensions.WriteVector24Bit(ref buffer, (writer, state) =>
{
WriteCertificateEntry(ref writer, connectionState.Certificate.CertificateData);
foreach (var b in connectionState.Certificate.CertificateChain)
{
WriteCertificateEntry(ref writer, b);
}
return(buffer);
}, connectionState);
return(buffer);
}
public WritableBuffer WriteServerFinished(WritableBuffer buffer, IConnectionStateTls12 state)
{
buffer.Write(_serverSpan);
return(buffer);
}
