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-rw-r--r-- | tests/hazmat/primitives/test_rsa.py | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/tests/hazmat/primitives/test_rsa.py b/tests/hazmat/primitives/test_rsa.py index 312d5a6f..56ce7032 100644 --- a/tests/hazmat/primitives/test_rsa.py +++ b/tests/hazmat/primitives/test_rsa.py @@ -56,6 +56,42 @@ def _check_rsa_private_key(skey): assert skey.key_size == pkey.key_size +def test_egcd(): + assert _egcd(0, 1) == (1, 0, 1) + val = _egcd( + int("c08e63c2fdf20bd2a05bd448e34a892cc8718c13ac5f8fb3f55cff7bc1a7f891", + 16), + int("e525d5ee4fe6d6142812fe12a7b531ebfaa033be349e4c3680d264f41d82008b", + 16) + ) + assert val[0] == 1L + assert val[1] == int("6caa1a8fae63ab2b8d4051101828985ef93fb0ffc14a955f93fd" + "9c4a3fd8c7b1", 16) + assert val[2] == int("-5b4ff48d0c09936986bc3c544f1e7dd684f8c0f09ae36a7819e" + "c95017c4be1c0", 16) + + +def test_modular_inverse(): + p = int( + "d1f9f6c09fd3d38987f7970247b85a6da84907753d42ec52bc23b745093f4fff5cff3" + "617ce43d00121a9accc0051f519c76e08cf02fc18acfe4c9e6aea18da470a2b611d2e" + "56a7b35caa2c0239bc041a53cc5875ca0b668ae6377d4b23e932d8c995fd1e58ecfd8" + "c4b73259c0d8a54d691cca3f6fb85c8a5c1baf588e898d481", 16 + ) + q = int( + "d1519255eb8f678c86cfd06802d1fbef8b664441ac46b73d33d13a8404580a33a8e74" + "cb2ea2e2963125b3d454d7a922cef24dd13e55f989cbabf64255a736671f4629a47b5" + "b2347cfcd669133088d1c159518531025297c2d67c9da856a12e80222cd03b4c6ec0f" + "86c957cb7bb8de7a127b645ec9e820aa94581e4762e209f01", 16 + ) + assert _modinv(q, p) == int( + "0275e06afa722999315f8f322275483e15e2fb46d827b17800f99110b269a6732748f" + "624a382fa2ed1ec68c99f7fc56fb60e76eea51614881f497ba7034c17dde955f92f15" + "772f8b2b41f3e56d88b1e096cdd293eba4eae1e82db815e0fadea0c4ec971bc6fd875" + "c20e67e48c31a611e98d32c6213ae4c4d7b53023b2f80c538", 16 + ) + + @pytest.mark.rsa class TestRSA(object): @pytest.mark.parametrize( |