Edit File: test_crypto_des.py
"""passlib.tests -- unittests for passlib.crypto.des""" #============================================================================= # imports #============================================================================= from __future__ import with_statement, division # core from functools import partial # site # pkg # module from passlib.utils import getrandbytes from passlib.tests.utils import TestCase #============================================================================= # test DES routines #============================================================================= class DesTest(TestCase): descriptionPrefix = "passlib.crypto.des" # test vectors taken from http://www.skepticfiles.org/faq/testdes.htm des_test_vectors = [ # key, plaintext, ciphertext (0x0000000000000000, 0x0000000000000000, 0x8CA64DE9C1B123A7), (0xFFFFFFFFFFFFFFFF, 0xFFFFFFFFFFFFFFFF, 0x7359B2163E4EDC58), (0x3000000000000000, 0x1000000000000001, 0x958E6E627A05557B), (0x1111111111111111, 0x1111111111111111, 0xF40379AB9E0EC533), (0x0123456789ABCDEF, 0x1111111111111111, 0x17668DFC7292532D), (0x1111111111111111, 0x0123456789ABCDEF, 0x8A5AE1F81AB8F2DD), (0x0000000000000000, 0x0000000000000000, 0x8CA64DE9C1B123A7), (0xFEDCBA9876543210, 0x0123456789ABCDEF, 0xED39D950FA74BCC4), (0x7CA110454A1A6E57, 0x01A1D6D039776742, 0x690F5B0D9A26939B), (0x0131D9619DC1376E, 0x5CD54CA83DEF57DA, 0x7A389D10354BD271), (0x07A1133E4A0B2686, 0x0248D43806F67172, 0x868EBB51CAB4599A), (0x3849674C2602319E, 0x51454B582DDF440A, 0x7178876E01F19B2A), (0x04B915BA43FEB5B6, 0x42FD443059577FA2, 0xAF37FB421F8C4095), (0x0113B970FD34F2CE, 0x059B5E0851CF143A, 0x86A560F10EC6D85B), (0x0170F175468FB5E6, 0x0756D8E0774761D2, 0x0CD3DA020021DC09), (0x43297FAD38E373FE, 0x762514B829BF486A, 0xEA676B2CB7DB2B7A), (0x07A7137045DA2A16, 0x3BDD119049372802, 0xDFD64A815CAF1A0F), (0x04689104C2FD3B2F, 0x26955F6835AF609A, 0x5C513C9C4886C088), (0x37D06BB516CB7546, 0x164D5E404F275232, 0x0A2AEEAE3FF4AB77), (0x1F08260D1AC2465E, 0x6B056E18759F5CCA, 0xEF1BF03E5DFA575A), (0x584023641ABA6176, 0x004BD6EF09176062, 0x88BF0DB6D70DEE56), (0x025816164629B007, 0x480D39006EE762F2, 0xA1F9915541020B56), (0x49793EBC79B3258F, 0x437540C8698F3CFA, 0x6FBF1CAFCFFD0556), (0x4FB05E1515AB73A7, 0x072D43A077075292, 0x2F22E49BAB7CA1AC), (0x49E95D6D4CA229BF, 0x02FE55778117F12A, 0x5A6B612CC26CCE4A), (0x018310DC409B26D6, 0x1D9D5C5018F728C2, 0x5F4C038ED12B2E41), (0x1C587F1C13924FEF, 0x305532286D6F295A, 0x63FAC0D034D9F793), (0x0101010101010101, 0x0123456789ABCDEF, 0x617B3A0CE8F07100), (0x1F1F1F1F0E0E0E0E, 0x0123456789ABCDEF, 0xDB958605F8C8C606), (0xE0FEE0FEF1FEF1FE, 0x0123456789ABCDEF, 0xEDBFD1C66C29CCC7), (0x0000000000000000, 0xFFFFFFFFFFFFFFFF, 0x355550B2150E2451), (0xFFFFFFFFFFFFFFFF, 0x0000000000000000, 0xCAAAAF4DEAF1DBAE), (0x0123456789ABCDEF, 0x0000000000000000, 0xD5D44FF720683D0D), (0xFEDCBA9876543210, 0xFFFFFFFFFFFFFFFF, 0x2A2BB008DF97C2F2), ] def test_01_expand(self): """expand_des_key()""" from passlib.crypto.des import expand_des_key, shrink_des_key, \ _KDATA_MASK, INT_56_MASK # make sure test vectors are preserved (sans parity bits) # uses ints, bytes are tested under # 02 for key1, _, _ in self.des_test_vectors: key2 = shrink_des_key(key1) key3 = expand_des_key(key2) # NOTE: this assumes expand_des_key() sets parity bits to 0 self.assertEqual(key3, key1 & _KDATA_MASK) # type checks self.assertRaises(TypeError, expand_des_key, 1.0) # too large self.assertRaises(ValueError, expand_des_key, INT_56_MASK+1) self.assertRaises(ValueError, expand_des_key, b"\x00"*8) # too small self.assertRaises(ValueError, expand_des_key, -1) self.assertRaises(ValueError, expand_des_key, b"\x00"*6) def test_02_shrink(self): """shrink_des_key()""" from passlib.crypto.des import expand_des_key, shrink_des_key, INT_64_MASK rng = self.getRandom() # make sure reverse works for some random keys # uses bytes, ints are tested under # 01 for i in range(20): key1 = getrandbytes(rng, 7) key2 = expand_des_key(key1) key3 = shrink_des_key(key2) self.assertEqual(key3, key1) # type checks self.assertRaises(TypeError, shrink_des_key, 1.0) # too large self.assertRaises(ValueError, shrink_des_key, INT_64_MASK+1) self.assertRaises(ValueError, shrink_des_key, b"\x00"*9) # too small self.assertRaises(ValueError, shrink_des_key, -1) self.assertRaises(ValueError, shrink_des_key, b"\x00"*7) def _random_parity(self, key): """randomize parity bits""" from passlib.crypto.des import _KDATA_MASK, _KPARITY_MASK, INT_64_MASK rng = self.getRandom() return (key & _KDATA_MASK) | (rng.randint(0,INT_64_MASK) & _KPARITY_MASK) def test_03_encrypt_bytes(self): """des_encrypt_block()""" from passlib.crypto.des import (des_encrypt_block, shrink_des_key, _pack64, _unpack64) # run through test vectors for key, plaintext, correct in self.des_test_vectors: # convert to bytes key = _pack64(key) plaintext = _pack64(plaintext) correct = _pack64(correct) # test 64-bit key result = des_encrypt_block(key, plaintext) self.assertEqual(result, correct, "key=%r plaintext=%r:" % (key, plaintext)) # test 56-bit version key2 = shrink_des_key(key) result = des_encrypt_block(key2, plaintext) self.assertEqual(result, correct, "key=%r shrink(key)=%r plaintext=%r:" % (key, key2, plaintext)) # test with random parity bits for _ in range(20): key3 = _pack64(self._random_parity(_unpack64(key))) result = des_encrypt_block(key3, plaintext) self.assertEqual(result, correct, "key=%r rndparity(key)=%r plaintext=%r:" % (key, key3, plaintext)) # check invalid keys stub = b'\x00' * 8 self.assertRaises(TypeError, des_encrypt_block, 0, stub) self.assertRaises(ValueError, des_encrypt_block, b'\x00'*6, stub) # check invalid input self.assertRaises(TypeError, des_encrypt_block, stub, 0) self.assertRaises(ValueError, des_encrypt_block, stub, b'\x00'*7) # check invalid salts self.assertRaises(ValueError, des_encrypt_block, stub, stub, salt=-1) self.assertRaises(ValueError, des_encrypt_block, stub, stub, salt=1<<24) # check invalid rounds self.assertRaises(ValueError, des_encrypt_block, stub, stub, 0, rounds=0) def test_04_encrypt_ints(self): """des_encrypt_int_block()""" from passlib.crypto.des import des_encrypt_int_block # run through test vectors for key, plaintext, correct in self.des_test_vectors: # test 64-bit key result = des_encrypt_int_block(key, plaintext) self.assertEqual(result, correct, "key=%r plaintext=%r:" % (key, plaintext)) # test with random parity bits for _ in range(20): key3 = self._random_parity(key) result = des_encrypt_int_block(key3, plaintext) self.assertEqual(result, correct, "key=%r rndparity(key)=%r plaintext=%r:" % (key, key3, plaintext)) # check invalid keys self.assertRaises(TypeError, des_encrypt_int_block, b'\x00', 0) self.assertRaises(ValueError, des_encrypt_int_block, -1, 0) # check invalid input self.assertRaises(TypeError, des_encrypt_int_block, 0, b'\x00') self.assertRaises(ValueError, des_encrypt_int_block, 0, -1) # check invalid salts self.assertRaises(ValueError, des_encrypt_int_block, 0, 0, salt=-1) self.assertRaises(ValueError, des_encrypt_int_block, 0, 0, salt=1<<24) # check invalid rounds self.assertRaises(ValueError, des_encrypt_int_block, 0, 0, 0, rounds=0) #============================================================================= # eof #=============================================================================