Schnorr's ID protocol

An EC implementation of Schnorr's ID protocol (example)

Schnorr's Protocol

Prover (P, client) proves to Verifier (V, server) that he has pr

• P->V: handshake (P's cert)
• V->P: handshake OK
• P->V: commitment (K = k*G)
• V->P: challenge (e)
• P->V: response (r = k + e * pr)
• V->P: OK (rG =? K + eP)

Usage

Run server: call RunServer() function (in server/server_test.go, TestRunServer)

Run client: call RunClient() function (in client/client.go, main)

Client:

• directly call /read command will fail
• call /h or /handshake to send cert (public key) to V
• after receiving handshake success, call /c or /commit for commitment
• after receiving challenge, call /r or /responsefor response
• call /read command will success after passing Schnorr's ID protocol
• call /q or /quit will quit client

Server:

Automatically handle client's request.