Hello! I want to be able to use the Noise Protocol
<https://noiseprotocol.org/> to securely perform mutual authentication and
end to end encrypt the messages exchanged.
The naive way of doing this at the application layer would be to have all
the methods to have the same message containing a bytes field with the
serialized actual protobuf message, like:
```
service Trade {
rpc SecureMethod(SignedMessage) returns(SignedMessage)
}
message SignedMessage {
uint32 lenght = 1;
bytes payload = 2:
}
```
Then grpc server would decrypt the given payload and deserialize the bytes
to a defines protobuf message. (Just not sure if this naive method could
work with streaming replys)
But, would be way nicer if a three act ECDH key exchnage for subsequent
symmetric encryption could be done at grpc level (maybe using Credentials
plugin API?)
I would like to keep using existing protobuf definition and do not do any
additional encrypting/decrypting and subsequent
serialization/deserialization at application level.
Any help on where/what to touch would be much appreciated.
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