cpython/Lib/test/test_sha.py

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# Testing sha module (NIST's Secure Hash Algorithm)
# use the three examples from Federal Information Processing Standards
# Publication 180-1, Secure Hash Standard, 1995 April 17
# http://www.itl.nist.gov/div897/pubs/fip180-1.htm
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import sha
import unittest
from test import test_support
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class SHATestCase(unittest.TestCase):
def check(self, data, digest):
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# Check digest matches the expected value
obj = sha.new(data)
computed = obj.hexdigest()
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self.assert_(computed == digest)
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# Verify that the value doesn't change between two consecutive
# digest operations.
computed_again = obj.hexdigest()
self.assert_(computed == computed_again)
# Check hexdigest() output matches digest()'s output
digest = obj.digest()
hexd = ""
for c in digest:
hexd += '%02x' % ord(c)
self.assert_(computed == hexd)
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def test_case_1(self):
self.check("abc",
"a9993e364706816aba3e25717850c26c9cd0d89d")
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def test_case_2(self):
self.check("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
"84983e441c3bd26ebaae4aa1f95129e5e54670f1")
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def test_case_3(self):
self.check("a" * 1000000,
"34aa973cd4c4daa4f61eeb2bdbad27316534016f")
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def test_case_4(self):
self.check(chr(0xAA) * 80,
'4ca0ef38f1794b28a8f8ee110ee79d48ce13be25')
def test_main():
test_support.run_unittest(SHATestCase)
if __name__ == "__main__":
test_main()