mirror of
https://github.com/python/cpython.git
synced 2025-11-03 19:34:08 +00:00
50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
#
|
|
# Test suite to check compliance with PEP 247, the standard API for
|
|
# hashing algorithms.
|
|
#
|
|
|
|
import md5, sha, hmac
|
|
|
|
def check_hash_module(module, key=None):
|
|
assert hasattr(module, 'digest_size'), "Must have digest_size"
|
|
assert (module.digest_size is None or
|
|
module.digest_size > 0), "digest_size must be None or positive"
|
|
|
|
if key is not None:
|
|
obj1 = module.new(key)
|
|
obj2 = module.new(key, "string")
|
|
|
|
h1 = module.new(key, "string").digest()
|
|
obj3 = module.new(key) ; obj3.update("string") ; h2 = obj3.digest()
|
|
assert h1 == h2, "Hashes must match"
|
|
|
|
else:
|
|
obj1 = module.new()
|
|
obj2 = module.new("string")
|
|
|
|
h1 = module.new("string").digest()
|
|
obj3 = module.new() ; obj3.update("string") ; h2 = obj3.digest()
|
|
assert h1 == h2, "Hashes must match"
|
|
|
|
assert hasattr(obj1, 'digest_size'), "Objects must have digest_size attr"
|
|
if module.digest_size is not None:
|
|
assert obj1.digest_size == module.digest_size, "digest_size must match"
|
|
assert obj1.digest_size == len(h1), "digest_size must match actual size"
|
|
obj1.update("string")
|
|
obj_copy = obj1.copy()
|
|
assert obj1.digest() == obj_copy.digest(), "Copied objects must match"
|
|
assert obj1.hexdigest() == obj_copy.hexdigest(), \
|
|
"Copied objects must match"
|
|
digest, hexdigest = obj1.digest(), obj1.hexdigest()
|
|
hd2 = ""
|
|
for byte in digest:
|
|
hd2 += "%02x" % ord(byte)
|
|
assert hd2 == hexdigest, "hexdigest doesn't appear correct"
|
|
|
|
print 'Module', module.__name__, 'seems to comply with PEP 247'
|
|
|
|
|
|
if __name__ == '__main__':
|
|
check_hash_module(md5)
|
|
check_hash_module(sha)
|
|
check_hash_module(hmac, key='abc')
|