diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/hazmat/primitives/test_rsa.py | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/tests/hazmat/primitives/test_rsa.py b/tests/hazmat/primitives/test_rsa.py index df3a70f5..b2ea9bad 100644 --- a/tests/hazmat/primitives/test_rsa.py +++ b/tests/hazmat/primitives/test_rsa.py @@ -14,16 +14,25 @@ from __future__ import absolute_import, division, print_function +import binascii import itertools import os import pytest +from cryptography import exceptions, utils +from cryptography.hazmat.primitives import hashes, interfaces from cryptography.hazmat.primitives.asymmetric import rsa +from cryptography.hazmat.primitives.asymmetric import padding from ...utils import load_pkcs1_vectors, load_vectors_from_file +@utils.register_interface(interfaces.AsymmetricPadding) +class FakePadding(object): + name = "UNSUPPORTED-PADDING" + + def _modinv(e, m): """ Modular Multiplicative Inverse. Returns x such that: (x*e) mod m == 1 @@ -55,6 +64,17 @@ def _check_rsa_private_key(skey): assert skey.key_size == pkey.key_size +def _flatten_pkcs1_examples(vectors): + flattened_vectors = [] + for vector in vectors: + examples = vector[0].pop("examples") + for example in examples: + merged_vector = (vector[0], vector[1], example) + flattened_vectors.append(merged_vector) + + return flattened_vectors + + def test_modular_inverse(): p = int( "d1f9f6c09fd3d38987f7970247b85a6da84907753d42ec52bc23b745093f4fff5cff3" @@ -363,3 +383,43 @@ class TestRSA(object): # Test a public_exponent that is not odd. with pytest.raises(ValueError): rsa.RSAPublicKey(public_exponent=6, modulus=15) + + +@pytest.mark.rsa +class TestRSASignature(object): + @pytest.mark.parametrize( + "pkcs1_example", + _flatten_pkcs1_examples(load_vectors_from_file( + os.path.join( + "asymmetric", "RSA", "pkcs1v15sign-vectors.txt"), + load_pkcs1_vectors + )) + ) + def test_pkcs1v15_signing(self, pkcs1_example, backend): + private, public, example = pkcs1_example + private_key = rsa.RSAPrivateKey(**private) + public_key = rsa.RSAPublicKey(**public) + signer = private_key.signer(padding.PKCS1(), hashes.SHA1(), backend) + signer.update(binascii.unhexlify(example["message"])) + signature = signer.finalize() + assert binascii.hexlify(signature) == example["signature"] + + def test_use_after_finalize(self, backend): + private_key = rsa.RSAPrivateKey.generate(65537, 512, backend) + signer = private_key.signer(padding.PKCS1(), hashes.SHA1(), backend) + signer.update(b"sign me") + signer.finalize() + with pytest.raises(exceptions.AlreadyFinalized): + signer.finalize() + with pytest.raises(exceptions.AlreadyFinalized): + signer.update(b"more data") + + def test_unsupported_padding(self, backend): + private_key = rsa.RSAPrivateKey.generate(65537, 512, backend) + with pytest.raises(exceptions.UnsupportedAsymmetricPadding): + private_key.signer(FakePadding(), hashes.SHA1(), backend) + + def test_padding_incorrect_type(self, backend): + private_key = rsa.RSAPrivateKey.generate(65537, 512, backend) + with pytest.raises(TypeError): + private_key.signer("notpadding", hashes.SHA1(), backend) |