mirror of
https://github.com/saymrwulf/cryptography.git
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101 lines
3.5 KiB
Python
101 lines
3.5 KiB
Python
# This file is dual licensed under the terms of the Apache License, Version
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# 2.0, and the BSD License. See the LICENSE file in the root of this repository
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# for complete details.
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import binascii
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import pytest
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from cryptography.exceptions import InvalidSignature, UnsupportedAlgorithm
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from cryptography.hazmat.primitives import hashes, serialization
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from cryptography.hazmat.primitives.asymmetric import ec
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from .utils import wycheproof_tests
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_DIGESTS = {
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"SHA-1": hashes.SHA1(),
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"SHA-224": hashes.SHA224(),
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"SHA-256": hashes.SHA256(),
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"SHA-384": hashes.SHA384(),
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"SHA-512": hashes.SHA512(),
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"SHA3-224": hashes.SHA3_224(),
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"SHA3-256": hashes.SHA3_256(),
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"SHA3-384": hashes.SHA3_384(),
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"SHA3-512": hashes.SHA3_512(),
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}
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@wycheproof_tests(
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"ecdsa_test.json",
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"ecdsa_brainpoolP224r1_sha224_test.json",
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"ecdsa_brainpoolP256r1_sha256_test.json",
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"ecdsa_brainpoolP320r1_sha384_test.json",
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"ecdsa_brainpoolP384r1_sha384_test.json",
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"ecdsa_brainpoolP512r1_sha512_test.json",
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"ecdsa_secp224r1_sha224_test.json",
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"ecdsa_secp224r1_sha256_test.json",
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"ecdsa_secp224r1_sha512_test.json",
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"ecdsa_secp224r1_sha3_224_test.json",
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"ecdsa_secp224r1_sha3_256_test.json",
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"ecdsa_secp224r1_sha3_512_test.json",
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"ecdsa_secp256k1_sha256_test.json",
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"ecdsa_secp256k1_sha512_test.json",
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"ecdsa_secp256k1_sha3_256_test.json",
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"ecdsa_secp256k1_sha3_512_test.json",
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"ecdsa_secp256r1_sha256_test.json",
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"ecdsa_secp256r1_sha512_test.json",
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"ecdsa_secp256r1_sha3_256_test.json",
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"ecdsa_secp256r1_sha3_512_test.json",
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"ecdsa_secp384r1_sha384_test.json",
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"ecdsa_secp384r1_sha512_test.json",
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"ecdsa_secp384r1_sha3_384_test.json",
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"ecdsa_secp384r1_sha3_512_test.json",
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"ecdsa_secp521r1_sha512_test.json",
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"ecdsa_secp521r1_sha3_512_test.json",
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"ecdsa_secp160k1_sha256_test.json",
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"ecdsa_secp160r1_sha256_test.json",
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"ecdsa_secp160r2_sha256_test.json",
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"ecdsa_secp192k1_sha256_test.json",
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"ecdsa_secp192r1_sha256_test.json",
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)
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def test_ecdsa_signature(backend, wycheproof):
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try:
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key = wycheproof.cache_value_to_group(
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"cache_key",
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lambda: serialization.load_der_public_key(
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binascii.unhexlify(wycheproof.testgroup["keyDer"])
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),
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)
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assert isinstance(key, ec.EllipticCurvePublicKey)
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except (UnsupportedAlgorithm, ValueError):
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# In some OpenSSL 1.1.1 versions (RHEL and Fedora), some keys fail to
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# load with ValueError, instead of Unsupported Algorithm. We can
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# remove handling for that exception when we drop support.
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pytest.skip(
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"unable to load key (curve {})".format(
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wycheproof.testgroup["key"]["curve"]
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)
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)
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digest = _DIGESTS[wycheproof.testgroup["sha"]]
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alg = ec.ECDSA(digest)
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if not backend.elliptic_curve_signature_algorithm_supported(
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alg, key.curve
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):
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pytest.skip(f"Signature with {digest} and {key.curve} not supported")
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if wycheproof.valid or (
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wycheproof.acceptable and not wycheproof.has_flag("MissingZero")
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):
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key.verify(
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binascii.unhexlify(wycheproof.testcase["sig"]),
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binascii.unhexlify(wycheproof.testcase["msg"]),
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alg,
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)
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else:
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with pytest.raises(InvalidSignature):
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key.verify(
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binascii.unhexlify(wycheproof.testcase["sig"]),
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binascii.unhexlify(wycheproof.testcase["msg"]),
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alg,
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)
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