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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import, division, print_function
import os
import pytest
from cryptography.hazmat.primitives.asymmetric import rsa
from ...utils import load_pkcs1_vectors, load_vectors_from_file
class TestRSA(object):
@pytest.mark.parametrize(
"pkcs1_example",
load_vectors_from_file(
os.path.join(
"asymmetric", "RSA", "pkcs-1v2-1d2-vec", "pss-vect.txt"),
load_pkcs1_vectors
)
)
def test_load_pss_vect_example_keys(self, pkcs1_example):
secret, public = pkcs1_example
skey = rsa.RSAPrivateKey(**secret)
pkey = rsa.RSAPublicKey(**public)
pkey2 = skey.public_key()
assert skey and pkey and pkey2
assert skey.modulus
assert skey.modulus == pkey.modulus
assert skey.modulus == skey.n
assert skey.public_exponent == pkey.public_exponent
assert skey.public_exponent == skey.e
assert skey.private_exponent == skey.d
assert pkey.modulus
assert pkey.modulus == pkey2.modulus
assert pkey.modulus == pkey.n
assert pkey.public_exponent == pkey2.public_exponent
assert pkey.public_exponent == pkey.e
assert skey.key_size
assert skey.key_size == pkey.key_size
assert skey.key_size == pkey2.key_size
assert skey.p * skey.q == skey.modulus
def test_invalid_argument_types(self):
with pytest.raises(TypeError):
rsa.RSAPrivateKey(None, None, None, None, None)
with pytest.raises(TypeError):
rsa.RSAPublicKey(None, None)
def test_invalid_argument_values(self):
# tiny example key
rsa.RSAPrivateKey(3, 5, 14, 7, 15)
# modulus too small
with pytest.raises(ValueError):
rsa.RSAPrivateKey(3, 5, 14, 7, 2)
# modulus wrong
with pytest.raises(ValueError):
rsa.RSAPrivateKey(3, 5, 14, 7, 16)
# p too high
with pytest.raises(ValueError):
rsa.RSAPrivateKey(16, 5, 14, 7, 15)
# q too high
with pytest.raises(ValueError):
rsa.RSAPrivateKey(3, 16, 14, 7, 15)
# private exp too high
with pytest.raises(ValueError):
rsa.RSAPrivateKey(3, 5, 16, 7, 15)
# public exp too low
with pytest.raises(ValueError):
rsa.RSAPrivateKey(3, 5, 14, 1, 15)
# public exp too high
with pytest.raises(ValueError):
rsa.RSAPrivateKey(3, 5, 14, 17, 15)
# public exp not odd
with pytest.raises(ValueError):
rsa.RSAPrivateKey(3, 5, 14, 8, 15)
rsa.RSAPublicKey(7, 15)
# modulus too small
with pytest.raises(ValueError):
rsa.RSAPublicKey(7, 2)
# public exp too low
with pytest.raises(ValueError):
rsa.RSAPublicKey(1, 15)
# public exp too high
with pytest.raises(ValueError):
rsa.RSAPublicKey(17, 15)
# public exp not odd
with pytest.raises(ValueError):
rsa.RSAPublicKey(8, 15)
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