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fix possible integer overflows in _hashopenssl #3886

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Benjamin Peterson 2008-09-18 01:22:16 +00:00
parent b8966ab753
commit 8c2b7dc463
3 changed files with 63 additions and 13 deletions
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18
Lib/test/test_hashlib.py
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@ -9,7 +9,7 @@
import hashlib
import unittest
from test import test_support
from test.test_support import _4G, precisionbigmemtest
def hexstr(s):
import string
@ -55,7 +55,6 @@ class HashLibTestCase(unittest.TestCase):
m2.update(aas + bees + cees)
self.assertEqual(m1.digest(), m2.digest())
def check(self, name, data, digest):
# test the direct constructors
computed = getattr(hashlib, name)(data).hexdigest()
@ -75,6 +74,21 @@ class HashLibTestCase(unittest.TestCase):
self.check('md5', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',
'd174ab98d277d9f5a5611c2c9f419d9f')
@precisionbigmemtest(size=_4G + 5, memuse=1)
def test_case_md5_huge(self, size):
if size == _4G + 5:
try:
self.check('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d')
except OverflowError:
pass # 32-bit arch
@precisionbigmemtest(size=_4G - 1, memuse=1)
def test_case_md5_uintmax(self, size):
if size == _4G - 1:
try:
self.check('md5', 'A'*size, '28138d306ff1b8281f1a9067e1a1a2b3')
except OverflowError:
pass # 32-bit arch
# use the three examples from Federal Information Processing Standards
# Publication 180-1, Secure Hash Standard, 1995 April 17