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# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
import os
import re
import unittest
import warnings
from binascii import unhexlify, hexlify
from Crypto.Util.py3compat import tobytes
from Crypto.Util.strxor import strxor_c
from Crypto.SelfTest.st_common import list_test_cases
from Crypto.Hash import BLAKE2b, BLAKE2s
class Blake2Test(unittest.TestCase):
def test_new_positive(self):
h = self.BLAKE2.new(digest_bits=self.max_bits)
for new_func in self.BLAKE2.new, h.new:
for dbits in range(8, self.max_bits + 1, 8):
hobj = new_func(digest_bits=dbits)
self.assertEqual(hobj.digest_size, dbits // 8)
for dbytes in range(1, self.max_bytes + 1):
hobj = new_func(digest_bytes=dbytes)
self.assertEqual(hobj.digest_size, dbytes)
digest1 = new_func(data=b"\x90", digest_bytes=self.max_bytes).digest()
digest2 = new_func(digest_bytes=self.max_bytes).update(b"\x90").digest()
self.assertEqual(digest1, digest2)
new_func(data=b"A", key=b"5", digest_bytes=self.max_bytes)
hobj = h.new()
self.assertEqual(hobj.digest_size, self.max_bytes)
def test_new_negative(self):
h = self.BLAKE2.new(digest_bits=self.max_bits)
for new_func in self.BLAKE2.new, h.new:
self.assertRaises(TypeError, new_func,
digest_bytes=self.max_bytes,
digest_bits=self.max_bits)
self.assertRaises(ValueError, new_func, digest_bytes=0)
self.assertRaises(ValueError, new_func,
digest_bytes=self.max_bytes + 1)
self.assertRaises(ValueError, new_func, digest_bits=7)
self.assertRaises(ValueError, new_func, digest_bits=15)
self.assertRaises(ValueError, new_func,
digest_bits=self.max_bits + 1)
self.assertRaises(TypeError, new_func,
digest_bytes=self.max_bytes,
key=u"string")
self.assertRaises(TypeError, new_func,
digest_bytes=self.max_bytes,
data=u"string")
def test_default_digest_size(self):
digest = self.BLAKE2.new(data=b'abc').digest()
self.assertEqual(len(digest), self.max_bytes)
def test_update(self):
pieces = [b"\x0A" * 200, b"\x14" * 300]
h = self.BLAKE2.new(digest_bytes=self.max_bytes)
h.update(pieces[0]).update(pieces[1])
digest = h.digest()
h = self.BLAKE2.new(digest_bytes=self.max_bytes)
h.update(pieces[0] + pieces[1])
self.assertEqual(h.digest(), digest)
def test_update_negative(self):
h = self.BLAKE2.new(digest_bytes=self.max_bytes)
self.assertRaises(TypeError, h.update, u"string")
def test_digest(self):
h = self.BLAKE2.new(digest_bytes=self.max_bytes)
digest = h.digest()
# hexdigest does not change the state
self.assertEqual(h.digest(), digest)
# digest returns a byte string
self.assertTrue(isinstance(digest, type(b"digest")))
def test_update_after_digest(self):
msg = b"rrrrttt"
# Normally, update() cannot be done after digest()
h = self.BLAKE2.new(digest_bits=256, data=msg[:4])
dig1 = h.digest()
self.assertRaises(TypeError, h.update, msg[4:])
dig2 = self.BLAKE2.new(digest_bits=256, data=msg).digest()
# With the proper flag, it is allowed
h = self.BLAKE2.new(digest_bits=256, data=msg[:4], update_after_digest=True)
self.assertEqual(h.digest(), dig1)
# ... and the subsequent digest applies to the entire message
# up to that point
h.update(msg[4:])
self.assertEqual(h.digest(), dig2)
def test_hex_digest(self):
mac = self.BLAKE2.new(digest_bits=self.max_bits)
digest = mac.digest()
hexdigest = mac.hexdigest()
# hexdigest is equivalent to digest
self.assertEqual(hexlify(digest), tobytes(hexdigest))
# hexdigest does not change the state
self.assertEqual(mac.hexdigest(), hexdigest)
# hexdigest returns a string
self.assertTrue(isinstance(hexdigest, type("digest")))
def test_verify(self):
h = self.BLAKE2.new(digest_bytes=self.max_bytes, key=b"4")
mac = h.digest()
h.verify(mac)
wrong_mac = strxor_c(mac, 255)
self.assertRaises(ValueError, h.verify, wrong_mac)
def test_hexverify(self):
h = self.BLAKE2.new(digest_bytes=self.max_bytes, key=b"4")
mac = h.hexdigest()
h.hexverify(mac)
self.assertRaises(ValueError, h.hexverify, "4556")
def test_oid(self):
prefix = "1.3.6.1.4.1.1722.12.2." + self.oid_variant + "."
for digest_bits in self.digest_bits_oid:
h = self.BLAKE2.new(digest_bits=digest_bits)
self.assertEqual(h.oid, prefix + str(digest_bits // 8))
h = self.BLAKE2.new(digest_bits=digest_bits, key=b"secret")
self.assertRaises(AttributeError, lambda: h.oid)
for digest_bits in (8, self.max_bits):
if digest_bits in self.digest_bits_oid:
continue
self.assertRaises(AttributeError, lambda: h.oid)
def test_bytearray(self):
key = b'0' * 16
data = b"\x00\x01\x02"
# Data and key can be a bytearray (during initialization)
key_ba = bytearray(key)
data_ba = bytearray(data)
h1 = self.BLAKE2.new(data=data, key=key)
h2 = self.BLAKE2.new(data=data_ba, key=key_ba)
key_ba[:1] = b'\xFF'
data_ba[:1] = b'\xFF'
self.assertEqual(h1.digest(), h2.digest())
# Data can be a bytearray (during operation)
data_ba = bytearray(data)
h1 = self.BLAKE2.new()
h2 = self.BLAKE2.new()
h1.update(data)
h2.update(data_ba)
data_ba[:1] = b'\xFF'
self.assertEqual(h1.digest(), h2.digest())
def test_memoryview(self):
key = b'0' * 16
data = b"\x00\x01\x02"
def get_mv_ro(data):
return memoryview(data)
def get_mv_rw(data):
return memoryview(bytearray(data))
for get_mv in (get_mv_ro, get_mv_rw):
# Data and key can be a memoryview (during initialization)
key_mv = get_mv(key)
data_mv = get_mv(data)
h1 = self.BLAKE2.new(data=data, key=key)
h2 = self.BLAKE2.new(data=data_mv, key=key_mv)
if not data_mv.readonly:
data_mv[:1] = b'\xFF'
key_mv[:1] = b'\xFF'
self.assertEqual(h1.digest(), h2.digest())
# Data can be a memoryview (during operation)
data_mv = get_mv(data)
h1 = self.BLAKE2.new()
h2 = self.BLAKE2.new()
h1.update(data)
h2.update(data_mv)
if not data_mv.readonly:
data_mv[:1] = b'\xFF'
self.assertEqual(h1.digest(), h2.digest())
class Blake2bTest(Blake2Test):
#: Module
BLAKE2 = BLAKE2b
#: Max output size (in bits)
max_bits = 512
#: Max output size (in bytes)
max_bytes = 64
#: Bit size of the digests for which an ASN OID exists
digest_bits_oid = (160, 256, 384, 512)
# http://tools.ietf.org/html/draft-saarinen-blake2-02
oid_variant = "1"
class Blake2sTest(Blake2Test):
#: Module
BLAKE2 = BLAKE2s
#: Max output size (in bits)
max_bits = 256
#: Max output size (in bytes)
max_bytes = 32
#: Bit size of the digests for which an ASN OID exists
digest_bits_oid = (128, 160, 224, 256)
# http://tools.ietf.org/html/draft-saarinen-blake2-02
oid_variant = "2"
class Blake2OfficialTestVector(unittest.TestCase):
def _load_tests(self, test_vector_file):
expected = "in"
test_vectors = []
with open(test_vector_file, "rt") as test_vector_fd:
for line_number, line in enumerate(test_vector_fd):
if line.strip() == "" or line.startswith("#"):
continue
res = re.match("%s:\t([0-9A-Fa-f]*)" % expected, line)
if not res:
raise ValueError("Incorrect test vector format (line %d)"
% line_number)
if res.group(1):
bin_value = unhexlify(tobytes(res.group(1)))
else:
bin_value = b""
if expected == "in":
input_data = bin_value
expected = "key"
elif expected == "key":
key = bin_value
expected = "hash"
else:
result = bin_value
expected = "in"
test_vectors.append((input_data, key, result))
return test_vectors
def setUp(self):
dir_comps = ("Hash", self.name)
file_name = self.name.lower() + "-test.txt"
self.description = "%s tests" % self.name
try:
import pycryptodome_test_vectors # type: ignore
except ImportError:
warnings.warn("Warning: skipping extended tests for %s" % self.name,
UserWarning)
self.test_vectors = []
return
init_dir = os.path.dirname(pycryptodome_test_vectors.__file__)
full_file_name = os.path.join(os.path.join(init_dir, *dir_comps), file_name)
self.test_vectors = self._load_tests(full_file_name)
def runTest(self):
for (input_data, key, result) in self.test_vectors:
mac = self.BLAKE2.new(key=key, digest_bytes=self.max_bytes)
mac.update(input_data)
self.assertEqual(mac.digest(), result)
class Blake2bOfficialTestVector(Blake2OfficialTestVector):
#: Module
BLAKE2 = BLAKE2b
#: Hash name
name = "BLAKE2b"
#: Max digest size
max_bytes = 64
class Blake2sOfficialTestVector(Blake2OfficialTestVector):
#: Module
BLAKE2 = BLAKE2s
#: Hash name
name = "BLAKE2s"
#: Max digest size
max_bytes = 32
class Blake2TestVector1(unittest.TestCase):
def _load_tests(self, test_vector_file):
test_vectors = []
with open(test_vector_file, "rt") as test_vector_fd:
for line_number, line in enumerate(test_vector_fd):
if line.strip() == "" or line.startswith("#"):
continue
res = re.match("digest: ([0-9A-Fa-f]*)", line)
if not res:
raise ValueError("Incorrect test vector format (line %d)"
% line_number)
test_vectors.append(unhexlify(tobytes(res.group(1))))
return test_vectors
def setUp(self):
dir_comps = ("Hash", self.name)
file_name = "tv1.txt"
self.description = "%s tests" % self.name
try:
import pycryptodome_test_vectors
except ImportError:
warnings.warn("Warning: skipping extended tests for %s" % self.name,
UserWarning)
self.test_vectors = []
return
init_dir = os.path.dirname(pycryptodome_test_vectors.__file__)
full_file_name = os.path.join(os.path.join(init_dir, *dir_comps), file_name)
self.test_vectors = self._load_tests(full_file_name)
def runTest(self):
for tv in self.test_vectors:
digest_bytes = len(tv)
next_data = b""
for _ in range(100):
h = self.BLAKE2.new(digest_bytes=digest_bytes)
h.update(next_data)
next_data = h.digest() + next_data
self.assertEqual(h.digest(), tv)
class Blake2bTestVector1(Blake2TestVector1):
#: Module
BLAKE2 = BLAKE2b
#: Hash name
name = "BLAKE2b"
class Blake2sTestVector1(Blake2TestVector1):
#: Module
BLAKE2 = BLAKE2s
#: Hash name
name = "BLAKE2s"
class Blake2TestVector2(unittest.TestCase):
def _load_tests(self, test_vector_file):
test_vectors = []
with open(test_vector_file, "rt") as test_vector_fd:
for line_number, line in enumerate(test_vector_fd):
if line.strip() == "" or line.startswith("#"):
continue
res = re.match(r"digest\(([0-9]+)\): ([0-9A-Fa-f]*)", line)
if not res:
raise ValueError("Incorrect test vector format (line %d)"
% line_number)
key_size = int(res.group(1))
result = unhexlify(tobytes(res.group(2)))
test_vectors.append((key_size, result))
return test_vectors
def setUp(self):
dir_comps = ("Hash", self.name)
file_name = "tv2.txt"
self.description = "%s tests" % self.name
try:
import pycryptodome_test_vectors # type: ignore
except ImportError:
warnings.warn("Warning: skipping extended tests for %s" % self.name,
UserWarning)
self.test_vectors = []
return
init_dir = os.path.dirname(pycryptodome_test_vectors.__file__)
full_file_name = os.path.join(os.path.join(init_dir, *dir_comps), file_name)
self.test_vectors = self._load_tests(full_file_name)
def runTest(self):
for key_size, result in self.test_vectors:
next_data = b""
for _ in range(100):
h = self.BLAKE2.new(digest_bytes=self.max_bytes,
key=b"A" * key_size)
h.update(next_data)
next_data = h.digest() + next_data
self.assertEqual(h.digest(), result)
class Blake2bTestVector2(Blake2TestVector1):
#: Module
BLAKE2 = BLAKE2b
#: Hash name
name = "BLAKE2b"
#: Max digest size in bytes
max_bytes = 64
class Blake2sTestVector2(Blake2TestVector1):
#: Module
BLAKE2 = BLAKE2s
#: Hash name
name = "BLAKE2s"
#: Max digest size in bytes
max_bytes = 32
def get_tests(config={}):
tests = []
tests += list_test_cases(Blake2bTest)
tests.append(Blake2bOfficialTestVector())
tests.append(Blake2bTestVector1())
tests.append(Blake2bTestVector2())
tests += list_test_cases(Blake2sTest)
tests.append(Blake2sOfficialTestVector())
tests.append(Blake2sTestVector1())
tests.append(Blake2sTestVector2())
return tests
if __name__ == '__main__':
import unittest
def suite():
return unittest.TestSuite(get_tests())
unittest.main(defaultTest='suite')