374 lines
12 KiB
Python
374 lines
12 KiB
Python
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# ===================================================================
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#
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# Copyright (c) 2014, 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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import os
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import re
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import unittest
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from binascii import unhexlify, hexlify
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from Crypto.Util.py3compat import b, tobytes, bchr
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from Crypto.Util.strxor import strxor_c
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from Crypto.Util._file_system import pycryptodome_filename
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from Crypto.SelfTest.st_common import list_test_cases
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from Crypto.Hash import BLAKE2b, BLAKE2s
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class Blake2Test(unittest.TestCase):
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def test_new_positive(self):
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h = self.BLAKE2.new(digest_bits=self.max_bits)
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for new_func in self.BLAKE2.new, h.new:
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for dbits in range(8, self.max_bits + 1, 8):
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hobj = new_func(digest_bits=dbits)
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self.assertEqual(hobj.digest_size, dbits // 8)
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for dbytes in range(1, self.max_bytes + 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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digest1 = new_func(data=b("\x90"), digest_bytes=self.max_bytes).digest()
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digest2 = new_func(digest_bytes=self.max_bytes).update(b("\x90")).digest()
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self.assertEqual(digest1, digest2)
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new_func(data=b("A"), key=b("5"), digest_bytes=self.max_bytes)
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hobj = h.new()
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self.assertEqual(hobj.digest_size, self.max_bytes)
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def test_new_negative(self):
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self.assertRaises(TypeError, self.BLAKE2.new)
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h = self.BLAKE2.new(digest_bits=self.max_bits)
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for new_func in self.BLAKE2.new, h.new:
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self.assertRaises(TypeError, new_func,
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digest_bytes=self.max_bytes,
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digest_bits=self.max_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_bytes=self.max_bytes + 1)
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self.assertRaises(ValueError, new_func, digest_bits=7)
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self.assertRaises(ValueError, new_func, digest_bits=15)
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self.assertRaises(ValueError, new_func,
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digest_bits=self.max_bits + 1)
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self.assertRaises(TypeError, new_func,
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digest_bytes=self.max_bytes,
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key="string")
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self.assertRaises(TypeError, new_func,
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digest_bytes=self.max_bytes,
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data="string")
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def test_update(self):
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pieces = [bchr(10) * 200, bchr(20) * 300]
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h = self.BLAKE2.new(digest_bytes=self.max_bytes)
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h.update(pieces[0]).update(pieces[1])
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digest = h.digest()
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h = self.BLAKE2.new(digest_bytes=self.max_bytes)
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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 = self.BLAKE2.new(digest_bytes=self.max_bytes)
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self.assertRaises(TypeError, h.update, "string")
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def test_digest(self):
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h = self.BLAKE2.new(digest_bytes=self.max_bytes)
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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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#import pdb; pdb.set_trace()
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# Normally, update() cannot be done after digest()
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h = self.BLAKE2.new(digest_bits=256, 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 = self.BLAKE2.new(digest_bits=256, data=msg).digest()
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# With the proper flag, it is allowed
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h = self.BLAKE2.new(digest_bits=256, 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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def test_hex_digest(self):
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mac = self.BLAKE2.new(digest_bits=self.max_bits)
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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_verify(self):
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h = self.BLAKE2.new(digest_bytes=self.max_bytes, key=b("4"))
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mac = h.digest()
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h.verify(mac)
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wrong_mac = strxor_c(mac, 255)
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self.assertRaises(ValueError, h.verify, wrong_mac)
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def test_hexverify(self):
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h = self.BLAKE2.new(digest_bytes=self.max_bytes, key=b("4"))
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mac = h.hexdigest()
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h.hexverify(mac)
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self.assertRaises(ValueError, h.hexverify, "4556")
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def test_oid(self):
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prefix = "1.3.6.1.4.1.1722.12.2." + self.oid_variant + "."
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for digest_bits in self.digest_bits_oid:
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h = self.BLAKE2.new(digest_bits=digest_bits)
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self.assertEqual(h.oid, prefix + str(digest_bits // 8))
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h = self.BLAKE2.new(digest_bits=digest_bits, key=b("secret"))
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self.assertRaises(AttributeError, lambda: h.oid)
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for digest_bits in (8, self.max_bits):
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if digest_bits in self.digest_bits_oid:
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continue
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self.assertRaises(AttributeError, lambda: h.oid)
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class Blake2bTest(Blake2Test):
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#: Module
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BLAKE2 = BLAKE2b
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#: Max output size (in bits)
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max_bits = 512
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#: Max output size (in bytes)
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max_bytes = 64
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#: Bit size of the digests for which an ASN OID exists
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digest_bits_oid = (160, 256, 384, 512)
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# http://tools.ietf.org/html/draft-saarinen-blake2-02
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oid_variant = "1"
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class Blake2sTest(Blake2Test):
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#: Module
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BLAKE2 = BLAKE2s
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#: Max output size (in bits)
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max_bits = 256
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#: Max output size (in bytes)
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max_bytes = 32
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#: Bit size of the digests for which an ASN OID exists
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digest_bits_oid = (128, 160, 224, 256)
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# http://tools.ietf.org/html/draft-saarinen-blake2-02
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oid_variant = "2"
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class Blake2OfficialTestVector(unittest.TestCase):
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def setUp(self):
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test_vector_file = pycryptodome_filename(
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("Crypto", "SelfTest", "Hash", "test_vectors", self.name),
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self.name.lower() + "-test.txt")
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expected = "in"
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self.test_vectors = []
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for line_number, line in enumerate(open(test_vector_file, "rt")):
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if line.strip() == "" or line.startswith("#"):
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continue
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res = re.match("%s:\t([0-9A-Fa-f]*)" % expected, line)
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if not res:
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raise ValueError("Incorrect test vector format (line %d)"
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% line_number)
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if res.group(1):
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bin_value = unhexlify(tobytes(res.group(1)))
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else:
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bin_value = b("")
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if expected == "in":
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input_data = bin_value
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expected = "key"
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elif expected == "key":
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key = bin_value
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expected = "hash"
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else:
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result = bin_value
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expected = "in"
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self.test_vectors.append((input_data, key, result))
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def runTest(self):
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for (input_data, key, result) in self.test_vectors:
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mac = self.BLAKE2.new(key=key, digest_bytes=self.max_bytes)
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mac.update(input_data)
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self.assertEqual(mac.digest(), result)
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class Blake2bOfficialTestVector(Blake2OfficialTestVector):
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#: Module
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BLAKE2 = BLAKE2b
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#: Hash name
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name = "BLAKE2b"
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#: Max digest size
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max_bytes = 64
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class Blake2sOfficialTestVector(Blake2OfficialTestVector):
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#: Module
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BLAKE2 = BLAKE2s
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#: Hash name
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name = "BLAKE2s"
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#: Max digest size
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max_bytes = 32
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class Blake2TestVector1(unittest.TestCase):
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def setUp(self):
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test_vector_file = pycryptodome_filename(
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("Crypto", "SelfTest", "Hash", "test_vectors", self.name),
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"tv1.txt")
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self.test_vectors = []
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for line_number, line in enumerate(open(test_vector_file, "rt")):
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if line.strip() == "" or line.startswith("#"):
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continue
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res = re.match("digest: ([0-9A-Fa-f]*)", line)
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if not res:
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raise ValueError("Incorrect test vector format (line %d)"
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% line_number)
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self.test_vectors.append(unhexlify(tobytes(res.group(1))))
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def runTest(self):
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for tv in self.test_vectors:
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digest_bytes = len(tv)
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next_data = b("")
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for _ in range(100):
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h = self.BLAKE2.new(digest_bytes=digest_bytes)
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h.update(next_data)
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next_data = h.digest() + next_data
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self.assertEqual(h.digest(), tv)
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class Blake2bTestVector1(Blake2TestVector1):
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#: Module
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BLAKE2 = BLAKE2b
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#: Hash name
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name = "BLAKE2b"
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class Blake2sTestVector1(Blake2TestVector1):
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#: Module
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BLAKE2 = BLAKE2s
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#: Hash name
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name = "BLAKE2s"
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class Blake2TestVector2(unittest.TestCase):
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def setUp(self):
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test_vector_file = pycryptodome_filename(
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("Crypto", "SelfTest", "Hash", "test_vectors", self.name),
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"tv2.txt")
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self.test_vectors = []
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for line_number, line in enumerate(open(test_vector_file, "rt")):
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if line.strip() == "" or line.startswith("#"):
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continue
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res = re.match("digest\(([0-9]+)\): ([0-9A-Fa-f]*)", line)
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if not res:
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raise ValueError("Incorrect test vector format (line %d)"
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% line_number)
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key_size = int(res.group(1))
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result = unhexlify(tobytes(res.group(2)))
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self.test_vectors.append((key_size, result))
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def runTest(self):
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for key_size, result in self.test_vectors:
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next_data = b("")
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for _ in range(100):
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h = self.BLAKE2.new(digest_bytes=self.max_bytes,
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key=b("A" * key_size))
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h.update(next_data)
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next_data = h.digest() + next_data
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self.assertEqual(h.digest(), result)
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class Blake2bTestVector2(Blake2TestVector1):
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#: Module
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BLAKE2 = BLAKE2b
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#: Hash name
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name = "BLAKE2b"
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#: Max digest size in bytes
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max_bytes = 64
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class Blake2sTestVector2(Blake2TestVector1):
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#: Module
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BLAKE2 = BLAKE2s
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#: Hash name
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name = "BLAKE2s"
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#: Max digest size in bytes
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max_bytes = 32
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def get_tests(config={}):
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tests = []
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tests += list_test_cases(Blake2bTest)
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tests.append(Blake2bOfficialTestVector())
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tests.append(Blake2bTestVector1())
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tests.append(Blake2bTestVector2())
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tests += list_test_cases(Blake2sTest)
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tests.append(Blake2sOfficialTestVector())
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tests.append(Blake2sTestVector1())
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|
|
tests.append(Blake2sTestVector2())
|
||
|
|
|
||
|
|
return tests
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
import unittest
|
||
|
|
suite = lambda: unittest.TestSuite(get_tests())
|
||
|
|
unittest.main(defaultTest='suite')
|