GenerateKeypair generates a public and private ECDSA key, to be used for signing and verifying authentication tokens.

KeypairExists checks if keypair exists already.

NewSigner is, for the moment, a thin wrapper around Square's go-jose library to issue ECDSA-P256 JWS tokens.

NewVerifier reads a verification key file, and returns a verifier to verify token objects.

Given a token verifies if it has already expired or not return true if token has expired, false otherwise.

AuthToken contains information about the authenticated user.

Signer signs an issued token.

Verifier verifies the serialized representation of a token.