def test_all(self):
for test in ['', 'a', 'b', 'abc', 'abc'*50, 'hello world']:
#print test
#print sha256.sha256(test).hexdigest()
#print hashlib.sha256(test).hexdigest()
#print
assert sha256.sha256(test).hexdigest() == hashlib.sha256(test).hexdigest()
def random_str(l):
return ''.join(chr(random.randrange(256)) for i in xrange(l))
for length in xrange(150):
test = random_str(length)
a = sha256.sha256(test).hexdigest()
b = hashlib.sha256(test).hexdigest()
assert a == b
for i in xrange(100):
test = random_str(int(random.expovariate(1/100)))
test2 = random_str(int(random.expovariate(1/100)))
a = sha256.sha256(test)
a = a.copy()
a.update(test2)
a = a.hexdigest()
b = hashlib.sha256(test)
b = b.copy()
b.update(test2)
b = b.hexdigest()
assert a == b
def prefix_to_hash_link(prefix, const_ending=''):
assert prefix.endswith(const_ending), (prefix, const_ending)
x = sha256.sha256(prefix)
return dict(state=x.state,
extra_data=x.buf[:max(0,
len(x.buf) - len(const_ending))],
length=x.length // 8)
def check_hash_link(hash_link, data, const_ending=''):
extra_length = hash_link['length'] % (512 // 8)
assert len(hash_link['extra_data']) == max(
0, extra_length - len(const_ending))
extra = (hash_link['extra_data'] +
const_ending)[len(hash_link['extra_data']) + len(const_ending) -
extra_length:]
assert len(extra) == extra_length
return pack.IntType(256).unpack(
hashlib.sha256(
sha256.sha256(data, (hash_link['state'], extra,
8 * hash_link['length'])).digest()).digest())
def check_hash_link(hash_link, data, const_ending=''):
extra_length = hash_link['length'] % (512//8)
assert len(hash_link['extra_data']) == max(0, extra_length - len(const_ending))
extra = (hash_link['extra_data'] + const_ending)[len(hash_link['extra_data']) + len(const_ending) - extra_length:]
assert len(extra) == extra_length
return pack.IntType(256).unpack(hashlib.sha256(sha256.sha256(data, (hash_link['state'], extra, 8*hash_link['length'])).digest()).digest())
def prefix_to_hash_link(prefix, const_ending=''):
assert prefix.endswith(const_ending), (prefix, const_ending)
x = sha256.sha256(prefix)
return dict(state=x.state, extra_data=x.buf[:max(0, len(x.buf)-len(const_ending))], length=x.length//8)
