import hmac | |
import hashlib | |
import unittest | |
import warnings | |
from test import test_support | |
class TestVectorsTestCase(unittest.TestCase): | |
def test_md5_vectors(self): | |
# Test the HMAC module against test vectors from the RFC. | |
def md5test(key, data, digest): | |
h = hmac.HMAC(key, data) | |
self.assertEqual(h.hexdigest().upper(), digest.upper()) | |
md5test(chr(0x0b) * 16, | |
"Hi There", | |
"9294727A3638BB1C13F48EF8158BFC9D") | |
md5test("Jefe", | |
"what do ya want for nothing?", | |
"750c783e6ab0b503eaa86e310a5db738") | |
md5test(chr(0xAA)*16, | |
chr(0xDD)*50, | |
"56be34521d144c88dbb8c733f0e8b3f6") | |
md5test("".join([chr(i) for i in range(1, 26)]), | |
chr(0xCD) * 50, | |
"697eaf0aca3a3aea3a75164746ffaa79") | |
md5test(chr(0x0C) * 16, | |
"Test With Truncation", | |
"56461ef2342edc00f9bab995690efd4c") | |
md5test(chr(0xAA) * 80, | |
"Test Using Larger Than Block-Size Key - Hash Key First", | |
"6b1ab7fe4bd7bf8f0b62e6ce61b9d0cd") | |
md5test(chr(0xAA) * 80, | |
("Test Using Larger Than Block-Size Key " | |
"and Larger Than One Block-Size Data"), | |
"6f630fad67cda0ee1fb1f562db3aa53e") | |
def test_sha_vectors(self): | |
def shatest(key, data, digest): | |
h = hmac.HMAC(key, data, digestmod=hashlib.sha1) | |
self.assertEqual(h.hexdigest().upper(), digest.upper()) | |
shatest(chr(0x0b) * 20, | |
"Hi There", | |
"b617318655057264e28bc0b6fb378c8ef146be00") | |
shatest("Jefe", | |
"what do ya want for nothing?", | |
"effcdf6ae5eb2fa2d27416d5f184df9c259a7c79") | |
shatest(chr(0xAA)*20, | |
chr(0xDD)*50, | |
"125d7342b9ac11cd91a39af48aa17b4f63f175d3") | |
shatest("".join([chr(i) for i in range(1, 26)]), | |
chr(0xCD) * 50, | |
"4c9007f4026250c6bc8414f9bf50c86c2d7235da") | |
shatest(chr(0x0C) * 20, | |
"Test With Truncation", | |
"4c1a03424b55e07fe7f27be1d58bb9324a9a5a04") | |
shatest(chr(0xAA) * 80, | |
"Test Using Larger Than Block-Size Key - Hash Key First", | |
"aa4ae5e15272d00e95705637ce8a3b55ed402112") | |
shatest(chr(0xAA) * 80, | |
("Test Using Larger Than Block-Size Key " | |
"and Larger Than One Block-Size Data"), | |
"e8e99d0f45237d786d6bbaa7965c7808bbff1a91") | |
def _rfc4231_test_cases(self, hashfunc): | |
def hmactest(key, data, hexdigests): | |
h = hmac.HMAC(key, data, digestmod=hashfunc) | |
self.assertEqual(h.hexdigest().lower(), hexdigests[hashfunc]) | |
# 4.2. Test Case 1 | |
hmactest(key = '\x0b'*20, | |
data = 'Hi There', | |
hexdigests = { | |
hashlib.sha224: '896fb1128abbdf196832107cd49df33f' | |
'47b4b1169912ba4f53684b22', | |
hashlib.sha256: 'b0344c61d8db38535ca8afceaf0bf12b' | |
'881dc200c9833da726e9376c2e32cff7', | |
hashlib.sha384: 'afd03944d84895626b0825f4ab46907f' | |
'15f9dadbe4101ec682aa034c7cebc59c' | |
'faea9ea9076ede7f4af152e8b2fa9cb6', | |
hashlib.sha512: '87aa7cdea5ef619d4ff0b4241a1d6cb0' | |
'2379f4e2ce4ec2787ad0b30545e17cde' | |
'daa833b7d6b8a702038b274eaea3f4e4' | |
'be9d914eeb61f1702e696c203a126854', | |
}) | |
# 4.3. Test Case 2 | |
hmactest(key = 'Jefe', | |
data = 'what do ya want for nothing?', | |
hexdigests = { | |
hashlib.sha224: 'a30e01098bc6dbbf45690f3a7e9e6d0f' | |
'8bbea2a39e6148008fd05e44', | |
hashlib.sha256: '5bdcc146bf60754e6a042426089575c7' | |
'5a003f089d2739839dec58b964ec3843', | |
hashlib.sha384: 'af45d2e376484031617f78d2b58a6b1b' | |
'9c7ef464f5a01b47e42ec3736322445e' | |
'8e2240ca5e69e2c78b3239ecfab21649', | |
hashlib.sha512: '164b7a7bfcf819e2e395fbe73b56e0a3' | |
'87bd64222e831fd610270cd7ea250554' | |
'9758bf75c05a994a6d034f65f8f0e6fd' | |
'caeab1a34d4a6b4b636e070a38bce737', | |
}) | |
# 4.4. Test Case 3 | |
hmactest(key = '\xaa'*20, | |
data = '\xdd'*50, | |
hexdigests = { | |
hashlib.sha224: '7fb3cb3588c6c1f6ffa9694d7d6ad264' | |
'9365b0c1f65d69d1ec8333ea', | |
hashlib.sha256: '773ea91e36800e46854db8ebd09181a7' | |
'2959098b3ef8c122d9635514ced565fe', | |
hashlib.sha384: '88062608d3e6ad8a0aa2ace014c8a86f' | |
'0aa635d947ac9febe83ef4e55966144b' | |
'2a5ab39dc13814b94e3ab6e101a34f27', | |
hashlib.sha512: 'fa73b0089d56a284efb0f0756c890be9' | |
'b1b5dbdd8ee81a3655f83e33b2279d39' | |
'bf3e848279a722c806b485a47e67c807' | |
'b946a337bee8942674278859e13292fb', | |
}) | |
# 4.5. Test Case 4 | |
hmactest(key = ''.join([chr(x) for x in xrange(0x01, 0x19+1)]), | |
data = '\xcd'*50, | |
hexdigests = { | |
hashlib.sha224: '6c11506874013cac6a2abc1bb382627c' | |
'ec6a90d86efc012de7afec5a', | |
hashlib.sha256: '82558a389a443c0ea4cc819899f2083a' | |
'85f0faa3e578f8077a2e3ff46729665b', | |
hashlib.sha384: '3e8a69b7783c25851933ab6290af6ca7' | |
'7a9981480850009cc5577c6e1f573b4e' | |
'6801dd23c4a7d679ccf8a386c674cffb', | |
hashlib.sha512: 'b0ba465637458c6990e5a8c5f61d4af7' | |
'e576d97ff94b872de76f8050361ee3db' | |
'a91ca5c11aa25eb4d679275cc5788063' | |
'a5f19741120c4f2de2adebeb10a298dd', | |
}) | |
# 4.7. Test Case 6 | |
hmactest(key = '\xaa'*131, | |
data = 'Test Using Larger Than Block-Siz' | |
'e Key - Hash Key First', | |
hexdigests = { | |
hashlib.sha224: '95e9a0db962095adaebe9b2d6f0dbce2' | |
'd499f112f2d2b7273fa6870e', | |
hashlib.sha256: '60e431591ee0b67f0d8a26aacbf5b77f' | |
'8e0bc6213728c5140546040f0ee37f54', | |
hashlib.sha384: '4ece084485813e9088d2c63a041bc5b4' | |
'4f9ef1012a2b588f3cd11f05033ac4c6' | |
'0c2ef6ab4030fe8296248df163f44952', | |
hashlib.sha512: '80b24263c7c1a3ebb71493c1dd7be8b4' | |
'9b46d1f41b4aeec1121b013783f8f352' | |
'6b56d037e05f2598bd0fd2215d6a1e52' | |
'95e64f73f63f0aec8b915a985d786598', | |
}) | |
# 4.8. Test Case 7 | |
hmactest(key = '\xaa'*131, | |
data = 'This is a test using a larger th' | |
'an block-size key and a larger t' | |
'han block-size data. The key nee' | |
'ds to be hashed before being use' | |
'd by the HMAC algorithm.', | |
hexdigests = { | |
hashlib.sha224: '3a854166ac5d9f023f54d517d0b39dbd' | |
'946770db9c2b95c9f6f565d1', | |
hashlib.sha256: '9b09ffa71b942fcb27635fbcd5b0e944' | |
'bfdc63644f0713938a7f51535c3a35e2', | |
hashlib.sha384: '6617178e941f020d351e2f254e8fd32c' | |
'602420feb0b8fb9adccebb82461e99c5' | |
'a678cc31e799176d3860e6110c46523e', | |
hashlib.sha512: 'e37b6a775dc87dbaa4dfa9f96e5e3ffd' | |
'debd71f8867289865df5a32d20cdc944' | |
'b6022cac3c4982b10d5eeb55c3e4de15' | |
'134676fb6de0446065c97440fa8c6a58', | |
}) | |
def test_sha224_rfc4231(self): | |
self._rfc4231_test_cases(hashlib.sha224) | |
def test_sha256_rfc4231(self): | |
self._rfc4231_test_cases(hashlib.sha256) | |
def test_sha384_rfc4231(self): | |
self._rfc4231_test_cases(hashlib.sha384) | |
def test_sha512_rfc4231(self): | |
self._rfc4231_test_cases(hashlib.sha512) | |
def test_legacy_block_size_warnings(self): | |
class MockCrazyHash(object): | |
"""Ain't no block_size attribute here.""" | |
def __init__(self, *args): | |
self._x = hashlib.sha1(*args) | |
self.digest_size = self._x.digest_size | |
def update(self, v): | |
self._x.update(v) | |
def digest(self): | |
return self._x.digest() | |
with warnings.catch_warnings(): | |
warnings.simplefilter('error', RuntimeWarning) | |
with self.assertRaises(RuntimeWarning): | |
hmac.HMAC('a', 'b', digestmod=MockCrazyHash) | |
self.fail('Expected warning about missing block_size') | |
MockCrazyHash.block_size = 1 | |
with self.assertRaises(RuntimeWarning): | |
hmac.HMAC('a', 'b', digestmod=MockCrazyHash) | |
self.fail('Expected warning about small block_size') | |
class ConstructorTestCase(unittest.TestCase): | |
def test_normal(self): | |
# Standard constructor call. | |
failed = 0 | |
try: | |
h = hmac.HMAC("key") | |
except: | |
self.fail("Standard constructor call raised exception.") | |
def test_withtext(self): | |
# Constructor call with text. | |
try: | |
h = hmac.HMAC("key", "hash this!") | |
except: | |
self.fail("Constructor call with text argument raised exception.") | |
def test_withmodule(self): | |
# Constructor call with text and digest module. | |
try: | |
h = hmac.HMAC("key", "", hashlib.sha1) | |
except: | |
self.fail("Constructor call with hashlib.sha1 raised exception.") | |
class SanityTestCase(unittest.TestCase): | |
def test_default_is_md5(self): | |
# Testing if HMAC defaults to MD5 algorithm. | |
# NOTE: this whitebox test depends on the hmac class internals | |
h = hmac.HMAC("key") | |
self.assertTrue(h.digest_cons == hashlib.md5) | |
def test_exercise_all_methods(self): | |
# Exercising all methods once. | |
# This must not raise any exceptions | |
try: | |
h = hmac.HMAC("my secret key") | |
h.update("compute the hash of this text!") | |
dig = h.digest() | |
dig = h.hexdigest() | |
h2 = h.copy() | |
except: | |
self.fail("Exception raised during normal usage of HMAC class.") | |
class CopyTestCase(unittest.TestCase): | |
def test_attributes(self): | |
# Testing if attributes are of same type. | |
h1 = hmac.HMAC("key") | |
h2 = h1.copy() | |
self.assertTrue(h1.digest_cons == h2.digest_cons, | |
"digest constructors don't match.") | |
self.assertTrue(type(h1.inner) == type(h2.inner), | |
"Types of inner don't match.") | |
self.assertTrue(type(h1.outer) == type(h2.outer), | |
"Types of outer don't match.") | |
def test_realcopy(self): | |
# Testing if the copy method created a real copy. | |
h1 = hmac.HMAC("key") | |
h2 = h1.copy() | |
# Using id() in case somebody has overridden __cmp__. | |
self.assertTrue(id(h1) != id(h2), "No real copy of the HMAC instance.") | |
self.assertTrue(id(h1.inner) != id(h2.inner), | |
"No real copy of the attribute 'inner'.") | |
self.assertTrue(id(h1.outer) != id(h2.outer), | |
"No real copy of the attribute 'outer'.") | |
def test_equality(self): | |
# Testing if the copy has the same digests. | |
h1 = hmac.HMAC("key") | |
h1.update("some random text") | |
h2 = h1.copy() | |
self.assertTrue(h1.digest() == h2.digest(), | |
"Digest of copy doesn't match original digest.") | |
self.assertTrue(h1.hexdigest() == h2.hexdigest(), | |
"Hexdigest of copy doesn't match original hexdigest.") | |
def test_main(): | |
test_support.run_unittest( | |
TestVectorsTestCase, | |
ConstructorTestCase, | |
SanityTestCase, | |
CopyTestCase | |
) | |
if __name__ == "__main__": | |
test_main() |