Refs #3331 -- integrated wycheproof ECDSA tests (#4341)
* Refs #3331 -- integrated wycheproof ECDSA tests
* Also handle these key loading errors
* review
* empty commit to trigger jenkins
diff --git a/tests/wycheproof/test_ecdsa.py b/tests/wycheproof/test_ecdsa.py
new file mode 100644
index 0000000..5214052
--- /dev/null
+++ b/tests/wycheproof/test_ecdsa.py
@@ -0,0 +1,76 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import binascii
+
+import pytest
+
+from cryptography.exceptions import InvalidSignature, UnsupportedAlgorithm
+from cryptography.hazmat.backends.interfaces import EllipticCurveBackend
+from cryptography.hazmat.primitives import hashes, serialization
+from cryptography.hazmat.primitives.asymmetric import ec
+
+
+_DIGESTS = {
+ "SHA-1": hashes.SHA1(),
+ "SHA-224": hashes.SHA224(),
+ "SHA-256": hashes.SHA256(),
+ "SHA-384": hashes.SHA384(),
+ "SHA-512": hashes.SHA512(),
+}
+
+
+@pytest.mark.requires_backend_interface(interface=EllipticCurveBackend)
+@pytest.mark.wycheproof_tests(
+ "ecdsa_test.json",
+ "ecdsa_brainpoolP224r1_sha224_test.json",
+ "ecdsa_brainpoolP256r1_sha256_test.json",
+ "ecdsa_brainpoolP320r1_sha384_test.json",
+ "ecdsa_brainpoolP384r1_sha384_test.json",
+ "ecdsa_brainpoolP512r1_sha512_test.json",
+ "ecdsa_secp224r1_sha224_test.json",
+ "ecdsa_secp224r1_sha256_test.json",
+ "ecdsa_secp224r1_sha512_test.json",
+ "ecdsa_secp256k1_sha256_test.json",
+ "ecdsa_secp256k1_sha512_test.json",
+ "ecdsa_secp256r1_sha256_test.json",
+ "ecdsa_secp256r1_sha512_test.json",
+ "ecdsa_secp384r1_sha384_test.json",
+ "ecdsa_secp384r1_sha512_test.json",
+ "ecdsa_secp521r1_sha512_test.json",
+)
+def test_ecdsa_signature(backend, wycheproof):
+ try:
+ key = serialization.load_der_public_key(
+ binascii.unhexlify(wycheproof.testgroup["keyDer"]), backend
+ )
+ except (UnsupportedAlgorithm, ValueError):
+ # In OpenSSL 1.0.1, some keys fail to load with ValueError, instead of
+ # Unsupported Algorithm. We can remove handling for that exception
+ # when we drop support.
+ pytest.skip(
+ "unable to load key (curve {})".format(
+ wycheproof.testgroup["key"]["curve"]
+ )
+ )
+ digest = _DIGESTS[wycheproof.testgroup["sha"]]
+
+ if (
+ wycheproof.valid or
+ (wycheproof.acceptable and not wycheproof.has_flag("MissingZero"))
+ ):
+ key.verify(
+ binascii.unhexlify(wycheproof.testcase["sig"]),
+ binascii.unhexlify(wycheproof.testcase["msg"]),
+ ec.ECDSA(digest),
+ )
+ else:
+ with pytest.raises(InvalidSignature):
+ key.verify(
+ binascii.unhexlify(wycheproof.testcase["sig"]),
+ binascii.unhexlify(wycheproof.testcase["msg"]),
+ ec.ECDSA(digest),
+ )