| # Test hashlib module |
| # |
| # $Id$ |
| # |
| # Copyright (C) 2005-2009 Gregory P. Smith (greg@krypto.org) |
| # Licensed to PSF under a Contributor Agreement. |
| # |
| |
| import hashlib |
| from io import StringIO |
| try: |
| import threading |
| except ImportError: |
| threading = None |
| import unittest |
| from test import support |
| from test.support import _4G, precisionbigmemtest |
| |
| def hexstr(s): |
| assert isinstance(s, bytes), repr(s) |
| h = "0123456789abcdef" |
| r = '' |
| for i in s: |
| r += h[(i >> 4) & 0xF] + h[i & 0xF] |
| return r |
| |
| |
| class HashLibTestCase(unittest.TestCase): |
| supported_hash_names = ( 'md5', 'MD5', 'sha1', 'SHA1', |
| 'sha224', 'SHA224', 'sha256', 'SHA256', |
| 'sha384', 'SHA384', 'sha512', 'SHA512' ) |
| |
| def test_unknown_hash(self): |
| try: |
| hashlib.new('spam spam spam spam spam') |
| except ValueError: |
| pass |
| else: |
| self.assert_(0 == "hashlib didn't reject bogus hash name") |
| |
| def test_hexdigest(self): |
| for name in self.supported_hash_names: |
| h = hashlib.new(name) |
| assert isinstance(h.digest(), bytes), name |
| self.assertEqual(hexstr(h.digest()), h.hexdigest()) |
| |
| |
| def test_large_update(self): |
| aas = b'a' * 128 |
| bees = b'b' * 127 |
| cees = b'c' * 126 |
| |
| for name in self.supported_hash_names: |
| m1 = hashlib.new(name) |
| m1.update(aas) |
| m1.update(bees) |
| m1.update(cees) |
| |
| m2 = hashlib.new(name) |
| 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() |
| self.assertEqual(computed, digest) |
| # test the general new() interface |
| computed = hashlib.new(name, data).hexdigest() |
| self.assertEqual(computed, digest) |
| |
| def check_no_unicode(self, algorithm_name): |
| # Unicode objects are not allowed as input. |
| self.assertRaises(TypeError, getattr(hashlib, algorithm_name), 'spam') |
| self.assertRaises(TypeError, hashlib.new, algorithm_name, 'spam') |
| |
| def test_no_unicode(self): |
| self.check_no_unicode('md5') |
| self.check_no_unicode('sha1') |
| self.check_no_unicode('sha224') |
| self.check_no_unicode('sha256') |
| self.check_no_unicode('sha384') |
| self.check_no_unicode('sha512') |
| |
| def test_case_md5_0(self): |
| self.check('md5', b'', 'd41d8cd98f00b204e9800998ecf8427e') |
| |
| def test_case_md5_1(self): |
| self.check('md5', b'abc', '900150983cd24fb0d6963f7d28e17f72') |
| |
| def test_case_md5_2(self): |
| self.check('md5', |
| b'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 |
| # http://www.itl.nist.gov/div897/pubs/fip180-1.htm |
| |
| def test_case_sha1_0(self): |
| self.check('sha1', b"", |
| "da39a3ee5e6b4b0d3255bfef95601890afd80709") |
| |
| def test_case_sha1_1(self): |
| self.check('sha1', b"abc", |
| "a9993e364706816aba3e25717850c26c9cd0d89d") |
| |
| def test_case_sha1_2(self): |
| self.check('sha1', |
| b"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
| "84983e441c3bd26ebaae4aa1f95129e5e54670f1") |
| |
| def test_case_sha1_3(self): |
| self.check('sha1', b"a" * 1000000, |
| "34aa973cd4c4daa4f61eeb2bdbad27316534016f") |
| |
| |
| # use the examples from Federal Information Processing Standards |
| # Publication 180-2, Secure Hash Standard, 2002 August 1 |
| # http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf |
| |
| def test_case_sha224_0(self): |
| self.check('sha224', b"", |
| "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f") |
| |
| def test_case_sha224_1(self): |
| self.check('sha224', b"abc", |
| "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7") |
| |
| def test_case_sha224_2(self): |
| self.check('sha224', |
| b"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
| "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525") |
| |
| def test_case_sha224_3(self): |
| self.check('sha224', b"a" * 1000000, |
| "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67") |
| |
| |
| def test_case_sha256_0(self): |
| self.check('sha256', b"", |
| "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855") |
| |
| def test_case_sha256_1(self): |
| self.check('sha256', b"abc", |
| "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad") |
| |
| def test_case_sha256_2(self): |
| self.check('sha256', |
| b"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
| "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1") |
| |
| def test_case_sha256_3(self): |
| self.check('sha256', b"a" * 1000000, |
| "cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0") |
| |
| |
| def test_case_sha384_0(self): |
| self.check('sha384', b"", |
| "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da"+ |
| "274edebfe76f65fbd51ad2f14898b95b") |
| |
| def test_case_sha384_1(self): |
| self.check('sha384', b"abc", |
| "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"+ |
| "8086072ba1e7cc2358baeca134c825a7") |
| |
| def test_case_sha384_2(self): |
| self.check('sha384', |
| b"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+ |
| b"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", |
| "09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"+ |
| "fcc7c71a557e2db966c3e9fa91746039") |
| |
| def test_case_sha384_3(self): |
| self.check('sha384', b"a" * 1000000, |
| "9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"+ |
| "07b8b3dc38ecc4ebae97ddd87f3d8985") |
| |
| |
| def test_case_sha512_0(self): |
| self.check('sha512', b"", |
| "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce"+ |
| "47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e") |
| |
| def test_case_sha512_1(self): |
| self.check('sha512', b"abc", |
| "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"+ |
| "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f") |
| |
| def test_case_sha512_2(self): |
| self.check('sha512', |
| b"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+ |
| b"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", |
| "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"+ |
| "501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909") |
| |
| def test_case_sha512_3(self): |
| self.check('sha512', b"a" * 1000000, |
| "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"+ |
| "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b") |
| |
| def test_gil(self): |
| # Check things work fine with an input larger than the size required |
| # for multithreaded operation (which is hardwired to 2048). |
| gil_minsize = 2048 |
| |
| m = hashlib.md5() |
| m.update(b'1') |
| m.update(b'#' * gil_minsize) |
| m.update(b'1') |
| self.assertEquals(m.hexdigest(), 'cb1e1a2cbc80be75e19935d621fb9b21') |
| |
| m = hashlib.md5(b'x' * gil_minsize) |
| self.assertEquals(m.hexdigest(), 'cfb767f225d58469c5de3632a8803958') |
| |
| def test_threaded_hashing(self): |
| if not threading: |
| raise unittest.SkipTest('No threading module.') |
| |
| # Updating the same hash object from several threads at once |
| # using data chunk sizes containing the same byte sequences. |
| # |
| # If the internal locks are working to prevent multiple |
| # updates on the same object from running at once, the resulting |
| # hash will be the same as doing it single threaded upfront. |
| hasher = hashlib.sha1() |
| num_threads = 5 |
| smallest_data = b'swineflu' |
| data = smallest_data*200000 |
| expected_hash = hashlib.sha1(data*num_threads).hexdigest() |
| |
| def hash_in_chunks(chunk_size, event): |
| index = 0 |
| while index < len(data): |
| hasher.update(data[index:index+chunk_size]) |
| index += chunk_size |
| event.set() |
| |
| events = [] |
| for threadnum in range(num_threads): |
| chunk_size = len(data) // (10**threadnum) |
| assert chunk_size > 0 |
| assert chunk_size % len(smallest_data) == 0 |
| event = threading.Event() |
| events.append(event) |
| threading.Thread(target=hash_in_chunks, |
| args=(chunk_size, event)).start() |
| |
| for event in events: |
| event.wait() |
| |
| self.assertEqual(expected_hash, hasher.hexdigest()) |
| |
| |
| def test_main(): |
| support.run_unittest(HashLibTestCase) |
| |
| |
| if __name__ == "__main__": |
| test_main() |