def update_signature(self, signature, caveat):
return binascii.unhexlify(
sign_first_party_caveat(
signature,
caveat._caveat_id
)
)
def add_first_party_caveat(self, macaroon, predicate, **kwargs):
predicate = convert_to_bytes(predicate)
caveat = Caveat(caveat_id=convert_to_bytes(predicate))
macaroon.caveats.append(caveat)
encode_key = binascii.unhexlify(macaroon.signature_bytes)
macaroon.signature = sign_first_party_caveat(encode_key, predicate)
return macaroon