API refactor

venv/lib/python3.12/site-packages/jose/backends/native.py

@@ -5,7 +5,7 @@ import os
 from jose.backends.base import Key
 from jose.constants import ALGORITHMS
 from jose.exceptions import JWKError
-from jose.utils import base64url_decode, base64url_encode
+from jose.utils import base64url_decode, base64url_encode, is_pem_format, is_ssh_key
 
 
 def get_random_bytes(num_bytes):
@@ -36,14 +36,7 @@ class HMACKey(Key):
         if isinstance(key, str):
             key = key.encode("utf-8")
 
-        invalid_strings = [
-            b"-----BEGIN PUBLIC KEY-----",
-            b"-----BEGIN RSA PUBLIC KEY-----",
-            b"-----BEGIN CERTIFICATE-----",
-            b"ssh-rsa",
-        ]
-
-        if any(string_value in key for string_value in invalid_strings):
+        if is_pem_format(key) or is_ssh_key(key):
             raise JWKError(
                 "The specified key is an asymmetric key or x509 certificate and"
                 " should not be used as an HMAC secret."