add RSA PSS verification support
diff --git a/tests/hazmat/primitives/utils.py b/tests/hazmat/primitives/utils.py
index f0a0031..38f6704 100644
--- a/tests/hazmat/primitives/utils.py
+++ b/tests/hazmat/primitives/utils.py
@@ -21,6 +21,7 @@
import pytest
from cryptography.hazmat.primitives import hashes, hmac
+from cryptography.hazmat.primitives.asymmetric import rsa, padding
from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
from cryptography.hazmat.primitives.ciphers import Cipher
from cryptography.hazmat.primitives.kdf.hkdf import HKDF
@@ -373,3 +374,35 @@
hkdf_test(backend, algorithm, params)
return test_hkdf
+
+
+def generate_rsa_pss_test(param_loader, path, file_names, hash_name):
+ all_params = _load_all_params(path, file_names, param_loader)
+ all_params = [i for i in all_params if i["algorithm"] == hash_name]
+
+ @pytest.mark.parametrize("params", all_params)
+ def test_rsa_pss(self, backend, params):
+ rsa_pss_test(backend, params)
+
+ return test_rsa_pss
+
+
+def rsa_pss_test(backend, params):
+ public_key = rsa.RSAPublicKey(
+ public_exponent=params["public_exponent"],
+ modulus=params["modulus"]
+ )
+ hash_cls = getattr(hashes, params["algorithm"].decode("utf8"))
+ verifier = public_key.verifier(
+ binascii.unhexlify(params["s"]),
+ padding.PSS(
+ mgf=padding.MGF1(
+ algorithm=hash_cls(),
+ salt_length=params["salt_length"]
+ )
+ ),
+ hash_cls(),
+ backend
+ )
+ verifier.update(binascii.unhexlify(params["msg"]))
+ verifier.verify()