def _get_concealed_token(self, token):
enc_key = "<STR_LIT>" % (HASH_PATH_PREFIX, token, HASH_PATH_SUFFIX)<EOL>return sha512(enc_key).hexdigest()<EOL>
Returns hashed token to be used as object name in Swift.

        Tokens are stored in auth account but object names are visible in Swift
        logs. Object names are hashed from token.