252 lines
8.9 KiB
Python
252 lines
8.9 KiB
Python
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# ===================================================================
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#
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# Copyright (c) 2015, Legrandin <helderijs@gmail.com>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ===================================================================
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"""Self-test suite for Crypto.Hash.keccak"""
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import unittest
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from binascii import hexlify, unhexlify
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from Crypto.SelfTest.loader import load_tests
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from Crypto.SelfTest.st_common import list_test_cases
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from io import StringIO
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from Crypto.Hash import keccak
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from Crypto.Util.py3compat import b, tobytes, bchr
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class KeccakTest(unittest.TestCase):
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def test_new_positive(self):
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for digest_bits in (224, 256, 384, 512):
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hobj = keccak.new(digest_bits=digest_bits)
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self.assertEqual(hobj.digest_size, digest_bits // 8)
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hobj2 = hobj.new()
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self.assertEqual(hobj2.digest_size, digest_bits // 8)
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for digest_bytes in (28, 32, 48, 64):
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hobj = keccak.new(digest_bytes=digest_bytes)
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self.assertEqual(hobj.digest_size, digest_bytes)
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hobj2 = hobj.new()
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self.assertEqual(hobj2.digest_size, digest_bytes)
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def test_new_positive2(self):
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digest1 = keccak.new(data=b("\x90"), digest_bytes=64).digest()
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digest2 = keccak.new(digest_bytes=64).update(b("\x90")).digest()
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self.assertEqual(digest1, digest2)
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def test_new_negative(self):
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# keccak.new needs digest size
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self.assertRaises(TypeError, keccak.new)
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h = keccak.new(digest_bits=512)
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# Either bits or bytes can be specified
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self.assertRaises(TypeError, keccak.new,
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digest_bytes=64,
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digest_bits=512)
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# Range
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self.assertRaises(ValueError, keccak.new, digest_bytes=0)
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self.assertRaises(ValueError, keccak.new, digest_bytes=1)
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self.assertRaises(ValueError, keccak.new, digest_bytes=65)
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self.assertRaises(ValueError, keccak.new, digest_bits=0)
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self.assertRaises(ValueError, keccak.new, digest_bits=1)
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self.assertRaises(ValueError, keccak.new, digest_bits=513)
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def test_update(self):
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pieces = [bchr(10) * 200, bchr(20) * 300]
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h = keccak.new(digest_bytes=64)
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h.update(pieces[0]).update(pieces[1])
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digest = h.digest()
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h = keccak.new(digest_bytes=64)
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h.update(pieces[0] + pieces[1])
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self.assertEqual(h.digest(), digest)
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def test_update_negative(self):
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h = keccak.new(digest_bytes=64)
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self.assertRaises(TypeError, h.update, "string")
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def test_digest(self):
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h = keccak.new(digest_bytes=64)
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digest = h.digest()
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# hexdigest does not change the state
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self.assertEqual(h.digest(), digest)
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# digest returns a byte string
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self.assertTrue(isinstance(digest, type(b("digest"))))
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def test_hex_digest(self):
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mac = keccak.new(digest_bits=512)
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digest = mac.digest()
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hexdigest = mac.hexdigest()
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# hexdigest is equivalent to digest
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self.assertEqual(hexlify(digest), tobytes(hexdigest))
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# hexdigest does not change the state
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self.assertEqual(mac.hexdigest(), hexdigest)
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# hexdigest returns a string
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self.assertTrue(isinstance(hexdigest, type("digest")))
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def test_update_after_digest(self):
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msg=b("rrrrttt")
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# Normally, update() cannot be done after digest()
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h = keccak.new(digest_bits=512, data=msg[:4])
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dig1 = h.digest()
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self.assertRaises(TypeError, h.update, msg[4:])
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dig2 = keccak.new(digest_bits=512, data=msg).digest()
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# With the proper flag, it is allowed
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h = keccak.new(digest_bits=512, data=msg[:4], update_after_digest=True)
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self.assertEqual(h.digest(), dig1)
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# ... and the subsequent digest applies to the entire message
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# up to that point
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h.update(msg[4:])
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self.assertEqual(h.digest(), dig2)
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class KeccakVectors(unittest.TestCase):
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pass
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# TODO: add ExtremelyLong tests
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test_vectors_224 = load_tests(("Crypto", "SelfTest", "Hash", "test_vectors", "keccak"),
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"ShortMsgKAT_224.txt",
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"Short Messages KAT 224",
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{ "len" : lambda x: int(x) } )
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test_vectors_224 += load_tests(("Crypto", "SelfTest", "Hash", "test_vectors", "keccak"),
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"LongMsgKAT_224.txt",
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"Long Messages KAT 224",
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{ "len" : lambda x: int(x) } )
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for idx, tv in enumerate(test_vectors_224):
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if tv.len == 0:
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data = b("")
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else:
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data = tobytes(tv.msg)
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def new_test(self, data=data, result=tv.md):
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hobj = keccak.new(digest_bits=224, data=data)
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self.assertEqual(hobj.digest(), result)
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setattr(KeccakVectors, "test_224_%d" % idx, new_test)
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# ---
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test_vectors_256 = load_tests(("Crypto", "SelfTest", "Hash", "test_vectors", "keccak"),
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"ShortMsgKAT_256.txt",
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"Short Messages KAT 256",
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{ "len" : lambda x: int(x) } )
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test_vectors_256 += load_tests(("Crypto", "SelfTest", "Hash", "test_vectors", "keccak"),
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"LongMsgKAT_256.txt",
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"Long Messages KAT 256",
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{ "len" : lambda x: int(x) } )
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for idx, tv in enumerate(test_vectors_256):
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if tv.len == 0:
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data = b("")
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else:
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data = tobytes(tv.msg)
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def new_test(self, data=data, result=tv.md):
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hobj = keccak.new(digest_bits=256, data=data)
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self.assertEqual(hobj.digest(), result)
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setattr(KeccakVectors, "test_256_%d" % idx, new_test)
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# ---
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test_vectors_384 = load_tests(("Crypto", "SelfTest", "Hash", "test_vectors", "keccak"),
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"ShortMsgKAT_384.txt",
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"Short Messages KAT 384",
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{ "len" : lambda x: int(x) } )
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test_vectors_384 += load_tests(("Crypto", "SelfTest", "Hash", "test_vectors", "keccak"),
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"LongMsgKAT_384.txt",
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"Long Messages KAT 384",
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{ "len" : lambda x: int(x) } )
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for idx, tv in enumerate(test_vectors_384):
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if tv.len == 0:
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data = b("")
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else:
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data = tobytes(tv.msg)
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def new_test(self, data=data, result=tv.md):
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hobj = keccak.new(digest_bits=384, data=data)
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self.assertEqual(hobj.digest(), result)
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setattr(KeccakVectors, "test_384_%d" % idx, new_test)
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# ---
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test_vectors_512 = load_tests(("Crypto", "SelfTest", "Hash", "test_vectors", "keccak"),
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"ShortMsgKAT_512.txt",
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"Short Messages KAT 512",
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{ "len" : lambda x: int(x) } )
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test_vectors_512 += load_tests(("Crypto", "SelfTest", "Hash", "test_vectors", "keccak"),
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"LongMsgKAT_512.txt",
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"Long Messages KAT 512",
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{ "len" : lambda x: int(x) } )
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for idx, tv in enumerate(test_vectors_512):
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if tv.len == 0:
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data = b("")
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else:
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data = tobytes(tv.msg)
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def new_test(self, data=data, result=tv.md):
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hobj = keccak.new(digest_bits=512, data=data)
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self.assertEqual(hobj.digest(), result)
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setattr(KeccakVectors, "test_512_%d" % idx, new_test)
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def get_tests(config={}):
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tests = []
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tests += list_test_cases(KeccakTest)
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tests += list_test_cases(KeccakVectors)
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return tests
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if __name__ == '__main__':
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import unittest
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suite = lambda: unittest.TestSuite(get_tests())
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unittest.main(defaultTest='suite')
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