public static Message CreateClientHello(ClientLink link, List <CipherSuiteIdentifier> allowed_suites)
{
Message msg = new Message(MessageType.ClientHello, 0x00);
MemoryStream ms = new MemoryStream();
for (int i = 0; i < allowed_suites.Count; i++)
{
byte[] serialized = allowed_suites[i].Serialize();
ms.Write(serialized, 0, serialized.Length);
}
msg.Store["allowed_suites"] = ms.ToArray();
ms.Close();
return(msg);
}
/// <summary>
/// Creates a new handshake request(client-side) and returns it.
/// </summary>
/// <param name="link">The ClientLink to create the request packet for.</param>
/// <returns>The created message.</returns>
public static Message CreateAuthRequest(ClientLink link)
{
Message msg = new Message(MessageType.AuthRequest, 0x00);
byte[] timestamp = GetTimestamp();
msg.Store["ecdh_public_key"] = link.Suite.GetKeyExchangeData().Concat(timestamp).ToArray();
msg.Store["timestamp"] = timestamp;
msg.Store["rsa_public_key"] = Encoding.UTF8.GetBytes(RsaHelpers.PemSerialize(link.Certificate.Public));
msg.Store["ca_public_key"] = Encoding.UTF8.GetBytes(RsaHelpers.PemSerialize(link.CertificateAuthority));
msg.Store["rsa_signature"] = link.Signature;
msg.Store["ecdh_signature"] = RsaHelpers.SignData(msg.Store["ecdh_public_key"], link.Certificate);
msg.Store["cert_name"] = Encoding.UTF8.GetBytes(Environment.MachineName);
if (link.AttestationToken != null)
{
msg.Store["attestation_token"] = link.AttestationToken;
}
return(msg);
}