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Python Source  |  2011-02-15  |  1.7 KB  |  57 lines
  1. # Testing sha module (NIST's Secure Hash Algorithm)
  2.  
  3. # use the three examples from Federal Information Processing Standards
  4. # Publication 180-1, Secure Hash Standard,  1995 April 17
  5. # http://www.itl.nist.gov/div897/pubs/fip180-1.htm
  6.  
  7. import warnings
  8. warnings.filterwarnings("ignore", "the sha module is deprecated.*",
  9.                         DeprecationWarning)
  10.  
  11. import sha
  12. import unittest
  13. from test import test_support
  14.  
  15.  
  16. class SHATestCase(unittest.TestCase):
  17.     def check(self, data, digest):
  18.         # Check digest matches the expected value
  19.         obj = sha.new(data)
  20.         computed = obj.hexdigest()
  21.         self.assert_(computed == digest)
  22.  
  23.         # Verify that the value doesn't change between two consecutive
  24.         # digest operations.
  25.         computed_again = obj.hexdigest()
  26.         self.assert_(computed == computed_again)
  27.  
  28.         # Check hexdigest() output matches digest()'s output
  29.         digest = obj.digest()
  30.         hexd = ""
  31.         for c in digest:
  32.             hexd += '%02x' % ord(c)
  33.         self.assert_(computed == hexd)
  34.  
  35.     def test_case_1(self):
  36.         self.check("abc",
  37.                    "a9993e364706816aba3e25717850c26c9cd0d89d")
  38.  
  39.     def test_case_2(self):
  40.         self.check("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
  41.                    "84983e441c3bd26ebaae4aa1f95129e5e54670f1")
  42.  
  43.     def test_case_3(self):
  44.         self.check("a" * 1000000,
  45.                    "34aa973cd4c4daa4f61eeb2bdbad27316534016f")
  46.  
  47.     def test_case_4(self):
  48.         self.check(chr(0xAA) * 80,
  49.                    '4ca0ef38f1794b28a8f8ee110ee79d48ce13be25')
  50.  
  51. def test_main():
  52.     test_support.run_unittest(SHATestCase)
  53.  
  54.  
  55. if __name__ == "__main__":
  56.     test_main()
  57.