303 lines
8.5 KiB
Python
303 lines
8.5 KiB
Python
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import unittest
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from binascii import unhexlify, hexlify
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from Cryptodome.Util.py3compat import tobytes
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from Cryptodome.SelfTest.st_common import list_test_cases
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from Cryptodome.Hash import TupleHash128, TupleHash256
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class TupleHashTest(unittest.TestCase):
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def new(self, *args, **kwargs):
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return self.TupleHash.new(*args, **kwargs)
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def test_new_positive(self):
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h = self.new()
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for new_func in self.TupleHash.new, h.new:
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for dbits in range(64, 1024 + 1, 8):
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hobj = new_func(digest_bits=dbits)
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self.assertEqual(hobj.digest_size * 8, dbits)
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for dbytes in range(8, 128 + 1):
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hobj = new_func(digest_bytes=dbytes)
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self.assertEqual(hobj.digest_size, dbytes)
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hobj = h.new()
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self.assertEqual(hobj.digest_size, self.default_bytes)
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def test_new_negative(self):
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h = self.new()
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for new_func in self.TupleHash.new, h.new:
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self.assertRaises(TypeError, new_func,
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digest_bytes=self.minimum_bytes,
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digest_bits=self.minimum_bits)
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self.assertRaises(ValueError, new_func, digest_bytes=0)
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self.assertRaises(ValueError, new_func,
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digest_bits=self.minimum_bits + 7)
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self.assertRaises(ValueError, new_func,
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digest_bits=self.minimum_bits - 8)
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self.assertRaises(ValueError, new_func,
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digest_bits=self.minimum_bytes - 1)
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def test_default_digest_size(self):
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digest = self.new().digest()
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self.assertEqual(len(digest), self.default_bytes)
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def test_update(self):
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h = self.new()
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h.update(b'')
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h.digest()
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h = self.new()
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h.update(b'')
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h.update(b'STRING1')
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h.update(b'STRING2')
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mac1 = h.digest()
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h = self.new()
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h.update(b'STRING1')
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h.update(b'STRING2')
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mac2 = h.digest()
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self.assertNotEqual(mac1, mac2)
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h = self.new()
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h.update(b'STRING1', b'STRING2')
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self.assertEqual(mac2, h.digest())
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h = self.new()
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t = b'STRING1', b'STRING2'
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h.update(*t)
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self.assertEqual(mac2, h.digest())
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def test_update_negative(self):
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h = self.new()
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self.assertRaises(TypeError, h.update, u"string")
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self.assertRaises(TypeError, h.update, None)
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self.assertRaises(TypeError, h.update, (b'STRING1', b'STRING2'))
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def test_digest(self):
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h = self.new()
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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_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 = self.new()
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h.update(msg)
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dig1 = h.digest()
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self.assertRaises(TypeError, h.update, dig1)
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def test_hex_digest(self):
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mac = self.new()
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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_bytearray(self):
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data = b"\x00\x01\x02"
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# Data can be a bytearray (during operation)
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data_ba = bytearray(data)
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h1 = self.new()
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h2 = self.new()
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h1.update(data)
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h2.update(data_ba)
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data_ba[:1] = b'\xFF'
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self.assertEqual(h1.digest(), h2.digest())
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def test_memoryview(self):
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data = b"\x00\x01\x02"
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def get_mv_ro(data):
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return memoryview(data)
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def get_mv_rw(data):
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return memoryview(bytearray(data))
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for get_mv in (get_mv_ro, get_mv_rw):
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# Data can be a memoryview (during operation)
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data_mv = get_mv(data)
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h1 = self.new()
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h2 = self.new()
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h1.update(data)
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h2.update(data_mv)
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if not data_mv.readonly:
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data_mv[:1] = b'\xFF'
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self.assertEqual(h1.digest(), h2.digest())
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class TupleHash128Test(TupleHashTest):
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TupleHash = TupleHash128
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minimum_bytes = 8
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default_bytes = 64
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minimum_bits = 64
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default_bits = 512
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class TupleHash256Test(TupleHashTest):
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TupleHash = TupleHash256
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minimum_bytes = 8
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default_bytes = 64
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minimum_bits = 64
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default_bits = 512
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class NISTExampleTestVectors(unittest.TestCase):
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# http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/TupleHash_samples.pdf
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test_data = [
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(
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(
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"00 01 02",
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"10 11 12 13 14 15",
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),
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"",
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"C5 D8 78 6C 1A FB 9B 82 11 1A B3 4B 65 B2 C0 04"
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"8F A6 4E 6D 48 E2 63 26 4C E1 70 7D 3F FC 8E D1",
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"KMAC128 Sample #1 NIST",
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TupleHash128
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),
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(
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(
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"00 01 02",
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"10 11 12 13 14 15",
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),
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"My Tuple App",
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"75 CD B2 0F F4 DB 11 54 E8 41 D7 58 E2 41 60 C5"
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"4B AE 86 EB 8C 13 E7 F5 F4 0E B3 55 88 E9 6D FB",
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"KMAC128 Sample #2 NIST",
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TupleHash128
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),
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(
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(
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"00 01 02",
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"10 11 12 13 14 15",
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"20 21 22 23 24 25 26 27 28",
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),
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"My Tuple App",
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"E6 0F 20 2C 89 A2 63 1E DA 8D 4C 58 8C A5 FD 07"
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"F3 9E 51 51 99 8D EC CF 97 3A DB 38 04 BB 6E 84",
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"KMAC128 Sample #3 NIST",
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TupleHash128
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),
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(
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(
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"00 01 02",
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"10 11 12 13 14 15",
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),
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"",
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"CF B7 05 8C AC A5 E6 68 F8 1A 12 A2 0A 21 95 CE"
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"97 A9 25 F1 DB A3 E7 44 9A 56 F8 22 01 EC 60 73"
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"11 AC 26 96 B1 AB 5E A2 35 2D F1 42 3B DE 7B D4"
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"BB 78 C9 AE D1 A8 53 C7 86 72 F9 EB 23 BB E1 94",
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"KMAC256 Sample #4 NIST",
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TupleHash256
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),
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(
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(
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"00 01 02",
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"10 11 12 13 14 15",
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),
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"My Tuple App",
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"14 7C 21 91 D5 ED 7E FD 98 DB D9 6D 7A B5 A1 16"
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"92 57 6F 5F E2 A5 06 5F 3E 33 DE 6B BA 9F 3A A1"
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"C4 E9 A0 68 A2 89 C6 1C 95 AA B3 0A EE 1E 41 0B"
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"0B 60 7D E3 62 0E 24 A4 E3 BF 98 52 A1 D4 36 7E",
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"KMAC256 Sample #5 NIST",
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TupleHash256
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),
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(
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(
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"00 01 02",
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"10 11 12 13 14 15",
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"20 21 22 23 24 25 26 27 28",
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),
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"My Tuple App",
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"45 00 0B E6 3F 9B 6B FD 89 F5 47 17 67 0F 69 A9"
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"BC 76 35 91 A4 F0 5C 50 D6 88 91 A7 44 BC C6 E7"
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"D6 D5 B5 E8 2C 01 8D A9 99 ED 35 B0 BB 49 C9 67"
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"8E 52 6A BD 8E 85 C1 3E D2 54 02 1D B9 E7 90 CE",
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"KMAC256 Sample #6 NIST",
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TupleHash256
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),
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]
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def setUp(self):
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td = []
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for tv_in in self.test_data:
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tv_out = [None] * len(tv_in)
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tv_out[0] = []
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for string in tv_in[0]:
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tv_out[0].append(unhexlify(string.replace(" ", "")))
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tv_out[1] = tobytes(tv_in[1]) # Custom
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tv_out[2] = unhexlify(tv_in[2].replace(" ", ""))
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tv_out[3] = tv_in[3]
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tv_out[4] = tv_in[4]
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td.append(tv_out)
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self.test_data = td
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def runTest(self):
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for data, custom, digest, text, module in self.test_data:
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hd1 = module.new(custom=custom, digest_bytes=len(digest))
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hd2 = module.new(custom=custom, digest_bytes=len(digest))
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# Call update() for each element
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for string in data:
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hd1.update(string)
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# One single update for all elements
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hd2.update(*data)
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self.assertEqual(hd1.digest(), digest, msg=text)
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self.assertEqual(hd2.digest(), digest, msg=text)
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def get_tests(config={}):
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tests = []
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tests += list_test_cases(TupleHash128Test)
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tests += list_test_cases(TupleHash256Test)
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tests.append(NISTExampleTestVectors())
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return tests
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if __name__ == '__main__':
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def suite():
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return unittest.TestSuite(get_tests())
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unittest.main(defaultTest='suite')
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