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Python Source  |  2011-02-15  |  7.0 KB  |  206 lines
  1. # Test hashlib module
  2. #
  3. # $Id: test_hashlib.py 66496 2008-09-18 01:22:16Z benjamin.peterson $
  4. #
  5. #  Copyright (C) 2005   Gregory P. Smith (greg@krypto.org)
  6. #  Licensed to PSF under a Contributor Agreement.
  7. #
  8.  
  9. import hashlib
  10. import unittest
  11. from test import test_support
  12. from test.test_support import _4G, precisionbigmemtest
  13.  
  14. def hexstr(s):
  15.     import string
  16.     h = string.hexdigits
  17.     r = ''
  18.     for c in s:
  19.         i = ord(c)
  20.         r = r + h[(i >> 4) & 0xF] + h[i & 0xF]
  21.     return r
  22.  
  23.  
  24. class HashLibTestCase(unittest.TestCase):
  25.     supported_hash_names = ( 'md5', 'MD5', 'sha1', 'SHA1',
  26.                              'sha224', 'SHA224', 'sha256', 'SHA256',
  27.                              'sha384', 'SHA384', 'sha512', 'SHA512' )
  28.  
  29.     def test_unknown_hash(self):
  30.         try:
  31.             hashlib.new('spam spam spam spam spam')
  32.         except ValueError:
  33.             pass
  34.         else:
  35.             self.assert_(0 == "hashlib didn't reject bogus hash name")
  36.  
  37.     def test_hexdigest(self):
  38.         for name in self.supported_hash_names:
  39.             h = hashlib.new(name)
  40.             self.assert_(hexstr(h.digest()) == h.hexdigest())
  41.  
  42.  
  43.     def test_large_update(self):
  44.         aas = 'a' * 128
  45.         bees = 'b' * 127
  46.         cees = 'c' * 126
  47.  
  48.         for name in self.supported_hash_names:
  49.             m1 = hashlib.new(name)
  50.             m1.update(aas)
  51.             m1.update(bees)
  52.             m1.update(cees)
  53.  
  54.             m2 = hashlib.new(name)
  55.             m2.update(aas + bees + cees)
  56.             self.assertEqual(m1.digest(), m2.digest())
  57.  
  58.     def check(self, name, data, digest):
  59.         # test the direct constructors
  60.         computed = getattr(hashlib, name)(data).hexdigest()
  61.         self.assert_(computed == digest)
  62.         # test the general new() interface
  63.         computed = hashlib.new(name, data).hexdigest()
  64.         self.assert_(computed == digest)
  65.  
  66.  
  67.     def test_case_md5_0(self):
  68.         self.check('md5', '', 'd41d8cd98f00b204e9800998ecf8427e')
  69.  
  70.     def test_case_md5_1(self):
  71.         self.check('md5', 'abc', '900150983cd24fb0d6963f7d28e17f72')
  72.  
  73.     def test_case_md5_2(self):
  74.         self.check('md5', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',
  75.                    'd174ab98d277d9f5a5611c2c9f419d9f')
  76.  
  77.     @precisionbigmemtest(size=_4G + 5, memuse=1)
  78.     def test_case_md5_huge(self, size):
  79.         if size == _4G + 5:
  80.             try:
  81.                 self.check('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d')
  82.             except OverflowError:
  83.                 pass # 32-bit arch
  84.  
  85.     @precisionbigmemtest(size=_4G - 1, memuse=1)
  86.     def test_case_md5_uintmax(self, size):
  87.         if size == _4G - 1:
  88.             try:
  89.                 self.check('md5', 'A'*size, '28138d306ff1b8281f1a9067e1a1a2b3')
  90.             except OverflowError:
  91.                 pass # 32-bit arch
  92.  
  93.     # use the three examples from Federal Information Processing Standards
  94.     # Publication 180-1, Secure Hash Standard,  1995 April 17
  95.     # http://www.itl.nist.gov/div897/pubs/fip180-1.htm
  96.  
  97.     def test_case_sha1_0(self):
  98.         self.check('sha1', "",
  99.                    "da39a3ee5e6b4b0d3255bfef95601890afd80709")
  100.  
  101.     def test_case_sha1_1(self):
  102.         self.check('sha1', "abc",
  103.                    "a9993e364706816aba3e25717850c26c9cd0d89d")
  104.  
  105.     def test_case_sha1_2(self):
  106.         self.check('sha1', "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
  107.                    "84983e441c3bd26ebaae4aa1f95129e5e54670f1")
  108.  
  109.     def test_case_sha1_3(self):
  110.         self.check('sha1', "a" * 1000000,
  111.                    "34aa973cd4c4daa4f61eeb2bdbad27316534016f")
  112.  
  113.  
  114.     # use the examples from Federal Information Processing Standards
  115.     # Publication 180-2, Secure Hash Standard,  2002 August 1
  116.     # http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
  117.  
  118.     def test_case_sha224_0(self):
  119.         self.check('sha224', "",
  120.           "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f")
  121.  
  122.     def test_case_sha224_1(self):
  123.         self.check('sha224', "abc",
  124.           "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7")
  125.  
  126.     def test_case_sha224_2(self):
  127.         self.check('sha224',
  128.           "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
  129.           "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525")
  130.  
  131.     def test_case_sha224_3(self):
  132.         self.check('sha224', "a" * 1000000,
  133.           "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67")
  134.  
  135.  
  136.     def test_case_sha256_0(self):
  137.         self.check('sha256', "",
  138.           "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
  139.  
  140.     def test_case_sha256_1(self):
  141.         self.check('sha256', "abc",
  142.           "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")
  143.  
  144.     def test_case_sha256_2(self):
  145.         self.check('sha256',
  146.           "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
  147.           "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1")
  148.  
  149.     def test_case_sha256_3(self):
  150.         self.check('sha256', "a" * 1000000,
  151.           "cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0")
  152.  
  153.  
  154.     def test_case_sha384_0(self):
  155.         self.check('sha384', "",
  156.           "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da"+
  157.           "274edebfe76f65fbd51ad2f14898b95b")
  158.  
  159.     def test_case_sha384_1(self):
  160.         self.check('sha384', "abc",
  161.           "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"+
  162.           "8086072ba1e7cc2358baeca134c825a7")
  163.  
  164.     def test_case_sha384_2(self):
  165.         self.check('sha384',
  166.                    "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+
  167.                    "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
  168.           "09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"+
  169.           "fcc7c71a557e2db966c3e9fa91746039")
  170.  
  171.     def test_case_sha384_3(self):
  172.         self.check('sha384', "a" * 1000000,
  173.           "9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"+
  174.           "07b8b3dc38ecc4ebae97ddd87f3d8985")
  175.  
  176.  
  177.     def test_case_sha512_0(self):
  178.         self.check('sha512', "",
  179.           "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce"+
  180.           "47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e")
  181.  
  182.     def test_case_sha512_1(self):
  183.         self.check('sha512', "abc",
  184.           "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"+
  185.           "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f")
  186.  
  187.     def test_case_sha512_2(self):
  188.         self.check('sha512',
  189.                    "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+
  190.                    "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
  191.           "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"+
  192.           "501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909")
  193.  
  194.     def test_case_sha512_3(self):
  195.         self.check('sha512', "a" * 1000000,
  196.           "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"+
  197.           "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b")
  198.  
  199.  
  200. def test_main():
  201.     test_support.run_unittest(HashLibTestCase)
  202.  
  203.  
  204. if __name__ == "__main__":
  205.     test_main()
  206.