mirror of
https://github.com/Legrandin/pycryptodome.git
synced 2025-10-31 05:31:23 +00:00
290 lines
9.8 KiB
Python
290 lines
9.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# SelfTest/Hash/common.py: Common code for Crypto.SelfTest.Hash
|
|
#
|
|
# Written in 2008 by Dwayne C. Litzenberger <dlitz@dlitz.net>
|
|
#
|
|
# ===================================================================
|
|
# The contents of this file are dedicated to the public domain. To
|
|
# the extent that dedication to the public domain is not available,
|
|
# everyone is granted a worldwide, perpetual, royalty-free,
|
|
# non-exclusive license to exercise all rights associated with the
|
|
# contents of this file for any purpose whatsoever.
|
|
# No rights are reserved.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
# SOFTWARE.
|
|
# ===================================================================
|
|
|
|
"""Self-testing for PyCrypto hash modules"""
|
|
|
|
import sys
|
|
import unittest
|
|
import binascii
|
|
import Crypto.Hash
|
|
from Crypto.Util.py3compat import b, tobytes
|
|
from Crypto.Util.strxor import strxor_c
|
|
|
|
class HashDigestSizeSelfTest(unittest.TestCase):
|
|
|
|
def __init__(self, hashmod, description, expected, extra_params):
|
|
unittest.TestCase.__init__(self)
|
|
self.hashmod = hashmod
|
|
self.expected = expected
|
|
self.description = description
|
|
self.extra_params = extra_params
|
|
|
|
def shortDescription(self):
|
|
return self.description
|
|
|
|
def runTest(self):
|
|
if "truncate" not in self.extra_params:
|
|
self.failUnless(hasattr(self.hashmod, "digest_size"))
|
|
self.assertEquals(self.hashmod.digest_size, self.expected)
|
|
h = self.hashmod.new(**self.extra_params)
|
|
self.failUnless(hasattr(h, "digest_size"))
|
|
self.assertEquals(h.digest_size, self.expected)
|
|
|
|
|
|
class HashSelfTest(unittest.TestCase):
|
|
|
|
def __init__(self, hashmod, description, expected, input, extra_params):
|
|
unittest.TestCase.__init__(self)
|
|
self.hashmod = hashmod
|
|
self.expected = expected.lower()
|
|
self.input = input
|
|
self.description = description
|
|
self.extra_params = extra_params
|
|
|
|
def shortDescription(self):
|
|
return self.description
|
|
|
|
def runTest(self):
|
|
h = self.hashmod.new(**self.extra_params)
|
|
h.update(self.input)
|
|
|
|
out1 = binascii.b2a_hex(h.digest())
|
|
out2 = h.hexdigest()
|
|
|
|
h = self.hashmod.new(self.input, **self.extra_params)
|
|
|
|
out3 = h.hexdigest()
|
|
out4 = binascii.b2a_hex(h.digest())
|
|
|
|
# PY3K: hexdigest() should return str(), and digest() bytes
|
|
self.assertEqual(self.expected, out1) # h = .new(); h.update(data); h.digest()
|
|
if sys.version_info[0] == 2:
|
|
self.assertEqual(self.expected, out2) # h = .new(); h.update(data); h.hexdigest()
|
|
self.assertEqual(self.expected, out3) # h = .new(data); h.hexdigest()
|
|
else:
|
|
self.assertEqual(self.expected.decode(), out2) # h = .new(); h.update(data); h.hexdigest()
|
|
self.assertEqual(self.expected.decode(), out3) # h = .new(data); h.hexdigest()
|
|
self.assertEqual(self.expected, out4) # h = .new(data); h.digest()
|
|
|
|
# Verify that the .new() method produces a fresh hash object, except
|
|
# for MD5 and SHA1, which are hashlib objects. (But test any .new()
|
|
# method that does exist.)
|
|
if self.hashmod.__name__ not in ('Crypto.Hash.MD5', 'Crypto.Hash.SHA1') or hasattr(h, 'new'):
|
|
h2 = h.new()
|
|
h2.update(self.input)
|
|
out5 = binascii.b2a_hex(h2.digest())
|
|
self.assertEqual(self.expected, out5)
|
|
|
|
|
|
class HashTestOID(unittest.TestCase):
|
|
def __init__(self, hashmod, oid, extra_params):
|
|
unittest.TestCase.__init__(self)
|
|
self.hashmod = hashmod
|
|
self.oid = oid
|
|
self.extra_params = extra_params
|
|
|
|
def runTest(self):
|
|
h = self.hashmod.new(**self.extra_params)
|
|
self.assertEqual(h.oid, self.oid)
|
|
|
|
|
|
class ByteArrayTest(unittest.TestCase):
|
|
|
|
def __init__(self, module, extra_params):
|
|
unittest.TestCase.__init__(self)
|
|
self.module = module
|
|
self.extra_params = extra_params
|
|
|
|
def runTest(self):
|
|
data = b("\x00\x01\x02")
|
|
|
|
# Data can be a bytearray (during initialization)
|
|
ba = bytearray(data)
|
|
|
|
h1 = self.module.new(data, **self.extra_params)
|
|
h2 = self.module.new(ba, **self.extra_params)
|
|
ba[:1] = b'\xFF'
|
|
self.assertEqual(h1.digest(), h2.digest())
|
|
|
|
# Data can be a bytearray (during operation)
|
|
ba = bytearray(data)
|
|
|
|
h1 = self.module.new(**self.extra_params)
|
|
h2 = self.module.new(**self.extra_params)
|
|
|
|
h1.update(data)
|
|
h2.update(ba)
|
|
|
|
ba[:1] = b'\xFF'
|
|
self.assertEqual(h1.digest(), h2.digest())
|
|
|
|
|
|
class MemoryViewTest(unittest.TestCase):
|
|
|
|
def __init__(self, module, extra_params):
|
|
unittest.TestCase.__init__(self)
|
|
self.module = module
|
|
self.extra_params = extra_params
|
|
|
|
def runTest(self):
|
|
|
|
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 can be a memoryview (during initialization)
|
|
mv = get_mv(data)
|
|
|
|
h1 = self.module.new(data, **self.extra_params)
|
|
h2 = self.module.new(mv, **self.extra_params)
|
|
if not mv.readonly:
|
|
mv[:1] = b'\xFF'
|
|
self.assertEqual(h1.digest(), h2.digest())
|
|
|
|
# Data can be a memoryview (during operation)
|
|
mv = get_mv(data)
|
|
|
|
h1 = self.module.new(**self.extra_params)
|
|
h2 = self.module.new(**self.extra_params)
|
|
h1.update(data)
|
|
h2.update(mv)
|
|
if not mv.readonly:
|
|
mv[:1] = b'\xFF'
|
|
self.assertEqual(h1.digest(), h2.digest())
|
|
|
|
|
|
class MACSelfTest(unittest.TestCase):
|
|
|
|
def __init__(self, module, description, result, input, key, params):
|
|
unittest.TestCase.__init__(self)
|
|
self.module = module
|
|
self.result = result
|
|
self.input = input
|
|
self.key = key
|
|
self.params = params
|
|
self.description = description
|
|
|
|
def shortDescription(self):
|
|
return self.description
|
|
|
|
def runTest(self):
|
|
key = binascii.a2b_hex(b(self.key))
|
|
data = binascii.a2b_hex(b(self.input.replace(" ","")))
|
|
|
|
# Strip whitespace from the expected string (force lower case)
|
|
expected = b("".join(self.result.lower().split()))
|
|
|
|
h = self.module.new(key, **self.params)
|
|
h.update(data)
|
|
out1_bin = h.digest()
|
|
out1 = binascii.b2a_hex(h.digest())
|
|
out2 = h.hexdigest()
|
|
|
|
# Verify that correct MAC does not raise any exception
|
|
h.hexverify(out1)
|
|
h.verify(out1_bin)
|
|
|
|
# Verify that incorrect MAC does raise ValueError exception
|
|
wrong_mac = strxor_c(out1_bin, 255)
|
|
self.assertRaises(ValueError, h.verify, wrong_mac)
|
|
self.assertRaises(ValueError, h.hexverify, "4556")
|
|
|
|
h = self.module.new(key, data, **self.params)
|
|
|
|
out3 = h.hexdigest()
|
|
out4 = binascii.b2a_hex(h.digest())
|
|
|
|
# Test .copy()
|
|
try:
|
|
h2 = h.copy()
|
|
h.update(b("blah blah blah")) # Corrupt the original hash object
|
|
out5 = binascii.b2a_hex(h2.digest()) # The copied hash object should return the correct result
|
|
self.assertEqual(expected, out5)
|
|
except NotImplementedError:
|
|
pass
|
|
|
|
# PY3K: Check that hexdigest() returns str and digest() returns bytes
|
|
if sys.version_info[0] > 2:
|
|
self.assertTrue(isinstance(h.digest(), type(b(""))))
|
|
self.assertTrue(isinstance(h.hexdigest(), type("")))
|
|
|
|
# PY3K: Check that .hexverify() accepts bytes or str
|
|
if sys.version_info[0] > 2:
|
|
h.hexverify(h.hexdigest())
|
|
h.hexverify(h.hexdigest().encode('ascii'))
|
|
|
|
# PY3K: hexdigest() should return str, and digest() should return bytes
|
|
self.assertEqual(expected, out1)
|
|
if sys.version_info[0] == 2:
|
|
self.assertEqual(expected, out2)
|
|
self.assertEqual(expected, out3)
|
|
else:
|
|
self.assertEqual(expected.decode(), out2)
|
|
self.assertEqual(expected.decode(), out3)
|
|
self.assertEqual(expected, out4)
|
|
|
|
|
|
def make_hash_tests(module, module_name, test_data, digest_size, oid=None,
|
|
extra_params={}):
|
|
tests = []
|
|
for i in range(len(test_data)):
|
|
row = test_data[i]
|
|
(expected, input) = map(tobytes,row[0:2])
|
|
if len(row) < 3:
|
|
description = repr(input)
|
|
else:
|
|
description = row[2]
|
|
name = "%s #%d: %s" % (module_name, i+1, description)
|
|
tests.append(HashSelfTest(module, name, expected, input, extra_params))
|
|
|
|
name = "%s #%d: digest_size" % (module_name, i+1)
|
|
tests.append(HashDigestSizeSelfTest(module, name, digest_size, extra_params))
|
|
|
|
if oid is not None:
|
|
tests.append(HashTestOID(module, oid, extra_params))
|
|
|
|
tests.append(ByteArrayTest(module, extra_params))
|
|
|
|
if not (sys.version_info[0] == 2 and sys.version_info[1] < 7):
|
|
tests.append(MemoryViewTest(module, extra_params))
|
|
|
|
return tests
|
|
|
|
|
|
def make_mac_tests(module, module_name, test_data):
|
|
tests = []
|
|
for i in range(len(test_data)):
|
|
row = test_data[i]
|
|
(key, data, results, description, params) = row
|
|
name = "%s #%d: %s" % (module_name, i+1, description)
|
|
tests.append(MACSelfTest(module, name, results, data, key, params))
|
|
return tests
|
|
|
|
# vim:set ts=4 sw=4 sts=4 expandtab:
|