private static Task <byte[]> GetMessageEnvelopeHash(
ICryptographicImplementation cryptographicImplementation,
AgentMessageEnvelope envelope) =>
cryptographicImplementation.Hash(
new byte[][] {
BitConverter.GetBytes(envelope.Created.Ticks),
Encoding.UTF8.GetBytes(envelope.Originator),
Encoding.UTF8.GetBytes(envelope.Target),
Encoding.UTF8.GetBytes(envelope.MessageType),
envelope.Message
}.SelectMany(a => a).ToArray());
public static async Task <AgentMessageEnvelope> Create(
ICryptographicImplementation cryptographicImplementation,
string originator,
string target,
IAgentMessage message)
{
var envelope = new AgentMessageEnvelope()
{
Created = DateTimeOffset.UtcNow,
Originator = originator,
Target = target,
MessageType = message.GetType().Name,
Message = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(message))
};
envelope.Signature = await cryptographicImplementation.Sign(
await GetMessageEnvelopeHash(cryptographicImplementation, envelope));
return(envelope);
}
