def test_permutation():
from cryptanalysis import summarize_sbox
sbox = list()
for value in range(256):
sbox.append(permutation(value))
print format(sbox[-1], 'b').zfill(80)[:79]
#import pprint
#pprint.pprint([format(word, 'b').zfill(128) for word in sbox])
summarize_sbox([word & 255 for word in sbox])
def collision_test(hash_function):
for index in range(20):
sbox = []
for byte in range(256):
_input = bytearray(20)
_input[index] = byte
sbox.append(ord(hash_function(_input)[index]))
cryptanalysis.summarize_sbox(sbox)
def collision_test(hash_function):
for index in range(20):
sbox = []
for byte in range(256):
_input = bytearray(20)
_input[index] = byte
sbox.append(ord(hash_function(_input)[index]))
cryptanalysis.summarize_sbox(sbox)
def test_permutation():
from cryptanalysis import summarize_sbox
sbox = list()
for value in range(256):
sbox.append(permutation(value))
print format(sbox[-1], 'b').zfill(80)[:79]
#import pprint
#pprint.pprint([format(word, 'b').zfill(128) for word in sbox])
summarize_sbox([word & 255 for word in sbox])
def test_choice():
sbox = {(_input, choice(*_input)) for _input in (tuple(bytearray(integer_to_bytes(integer, 3))) for integer in xrange(2 ** 24))}
print "Done "
with open("choice_sbox.txt", 'w') as _file:
_file.write(pprint.pformat(sbox))
# for integer in range(2 ** 24):
# _input = tuple(bytearray(integer_to_bytes(integer, 3)))
# sbox[_input] = choice(*_input)
summarize_sbox(sbox)
def test_choice():
sbox = {(_input, choice(*_input))
for _input in (tuple(bytearray(integer_to_bytes(integer, 3)))
for integer in xrange(2**24))}
print "Done "
with open("choice_sbox.txt", 'w') as _file:
_file.write(pprint.pformat(sbox))
# for integer in range(2 ** 24):
# _input = tuple(bytearray(integer_to_bytes(integer, 3)))
# sbox[_input] = choice(*_input)
summarize_sbox(sbox)
def test_sub_sboxes(permutation, argument_function, output_function):
sboxes = dict()
for sbox_entry in range(256):
output = output_function(permutation(*argument_function(sbox_entry)))
for shift in reversed(range(0, 128, 8)):
try:
sboxes[shift].append((output >> shift) & 255)
except KeyError:
sboxes[shift] = bytearray()
sboxes[shift].append((output >> shift) & 255)
from cryptanalysis import summarize_sbox
# print sboxes.values()
for shift in sorted(sboxes.keys()):
sbox = sboxes[shift]
print("\nSbox size: {}/{}".format(len(set(sbox)), len(sbox)))
print("Subsection index: {}".format(shift / 8))
summarize_sbox(sbox)
def test_sub_sboxes():
sboxes = dict()
for sbox_entry in range(256):
output = permutation(sbox_entry)
print format(output, 'b').zfill(128)
for shift in reversed(range(0, 128, 8)):
try:
sboxes[shift].append((output >> shift) & 255)
except KeyError:
sboxes[shift] = bytearray()
sboxes[shift].append((output >> shift) & 255)
from cryptanalysis import summarize_sbox
# print sboxes.values()
for shift in sorted(sboxes.keys()):
sbox = sboxes[shift]
print("\nSbox size: {}".format(len(set(sbox))))
print("Subsection index: {}".format(shift / 8))
summarize_sbox(sbox)
def test_round_differentials():
rounds = 2
sboxes = dict()
for sbox_entry in range(256):
a, b, c, d = 0, 0, 0, sbox_entry
for round in range(rounds):
a, b, c, d = _test_mixer(a, b, c, d)
#print format(d, 'b').zfill(64)
for word in "abcd":
for shift in reversed(range(0, 64, 8)):
_word = locals()[word]
try:
sboxes[(word, shift)].append((_word >> shift) & 255)
except KeyError:
sboxes[(word, shift)] = bytearray()
sboxes[(word, shift)].append((_word >> shift) & 255)
from cryptanalysis import summarize_sbox
for sbox in sboxes.values():
#print type(sbox), len(sbox), sbox
summarize_sbox(sbox)
def test_63_exp_N_mod_257_sbox():
sbox = [pow(63, number, 257) % 256 for number in range(256)]
from cryptanalysis import summarize_sbox
summarize_sbox(sbox)