diff options
Diffstat (limited to 'pycryptopp/hash/sha256.py')
-rw-r--r-- | pycryptopp/hash/sha256.py | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/pycryptopp/hash/sha256.py b/pycryptopp/hash/sha256.py deleted file mode 100644 index cf52a31..0000000 --- a/pycryptopp/hash/sha256.py +++ /dev/null @@ -1,43 +0,0 @@ -from pycryptopp import _import_my_names - -# These initializations to None are just to pacify pyflakes, which -# doesn't understand that we have to do some funky import trickery -# below in _import_my_names() in order to get sensible namespaces. -SHA256=None -Error=None - -_import_my_names(globals(), "sha256_") - -del _import_my_names - -def start_up_self_test(): - """ - This is a quick test intended to detect major errors such as the library being - miscompiled and segfaulting or returning incorrect answers. We've had problems - of that kind many times, thus justifying running this self-test on import. - This idea was suggested to me by the second edition of "Practical - Cryptography" by Ferguson, Schneier, and Kohno. - This test was copied from pycryptopp/test/test_sha256.py on 2010-09-04. - - This test takes up to 1.5 milliseconds on a VirtualBox instance on - my Macbook Pro (fast 64-bit Intel dual-core). - - Test that updating a hasher with various sized inputs yields - the expected answer. This is somewhat redundant with - test_chunksize(), but that's okay. This one exercises some - slightly different situations (such as finalizing a hash after - different length inputs.) This one is recursive so that there - is a single fixed result that we expect. - """ - hx = SHA256() - s = ''.join([ chr(c) for c in range(65) ]) - for i in range(0, 65): - hy = SHA256(s[:i]).digest() - hx.update(hy) - for i in range(0, 65): - hx.update(chr(0xFE)) - hx.update(s[:64]) - if hx.hexdigest().lower() != '5191c7841dd4e16aa454d40af924585dffc67157ffdbfd0236acddd07901629d': - raise Error("pycryptopp failed startup self-test. Please run pycryptopp unit tests.") - -start_up_self_test() |