bcrypt.py 文件源码

def _calc_checksum_bcrypt(self, secret):
        # bcrypt behavior:
        #   hash must be ascii bytes
        #   secret must be bytes
        #   returns bytes
        if self.ident == IDENT_2:
            # bcrypt doesn't support $2$ hashes; but we can fake $2$ behavior
            # using the $2a$ algorithm, by repeating the password until
            # it's at least 72 chars in length.
            if secret:
                secret = repeat_string(secret, 72)
            config = self._get_config(IDENT_2A)
        else:
            config = self._get_config()
        if isinstance(config, unicode):
            config = config.encode("ascii")
        hash = _bcrypt.hashpw(secret, config)
        assert hash.startswith(config) and len(hash) == len(config)+31
        assert isinstance(hash, bytes)
        return hash[-31:].decode("ascii")