Secure Remote Password submodule

This submodule provides the interface to the custom implementation of ProtonMail's SRP API. It automatically tries to load the constant time ctypes + OpenSSL implementation, and on failure it uses the native long int implementation. It is based on pysrp.

Examples

Authenticate against the API

from proton.srp import User
usr = User(password, modulus)
client_challenge = usr.get_challenge()

# Get server challenge and user salt...

client_proof = usr.process_challenge(salt, server_challenge, version)

# Send client proof...

usr.verify_session(server_proof)
if usr.authenticated():
    print("Logged in!")

Generate new random verifier

from proton.srp import User
usr = User(password, modulus)
generated_salt, generated_v = usr.compute_v()

Generate verifier given salt

from proton.srp import User
usr = User(password, modulus)
generated_salt, generated_v = usr.compute_v(salt)