def _test_encrypt():
data = "\x00" * 14
key = ("\x00" * 15)
outputs = []
for key_count, key_byte in enumerate(range(256)):
_key = bytearray(key + chr(key_byte))
key_parity = xor_parity(_key)
pride.functions.utilities.print_in_place(
str(key_count / 256.0) + '% complete; Current bias: {}'.format(
float(outputs.count(1)) / (outputs.count(0) or 1)))
for count in range(65535):
_data = bytearray(
data + cast(cast(count, "binary").zfill(16), "bytes"))
plaintext = _data[:]
# print len(_data), count
encrypt_block(_data, _key)
ciphertext = _data[:]
plaintext_parity = xor_parity(plaintext)
ciphertext_parity = xor_parity(ciphertext)
outputs.append(1 if plaintext_parity
^ ciphertext_parity == key_parity else 0)
zero_bits = outputs.count(0)
one_bits = outputs.count(1)
print float(one_bits) / zero_bits, one_bits, zero_bits
def ctr_mode(block, iv, key, cipher, tag=None, tweak=None):
cipher(iv, key, tag, tweak)
xor_subroutine(block, iv)
replacement_subroutine(
iv,
bytearray(cast(
cast(cast(bytes(iv), "binary"), "integer") + 1, "bytes")))
def test_speck_round():
left = right = cast(cast("\x01" * 3, "binary"), "integer")
leftkey = rightkey = left
# print left, right
left, right = speck_round(left, right, leftkey, 2**(3 * 8))
# print left, right
left, right = invert_speck_round(left, right, leftkey, 2**(3 * 8))
def test_speck_round():
left = right = cast(cast("\x01" * 3, "binary"), "integer")
leftkey = rightkey = left
# print left, right
left, right = speck_round(left, right, leftkey, 2 ** (3 * 8))
# print left, right
left, right = invert_speck_round(left, right, leftkey, 2 ** (3 * 8))
def rotational_difference(input_one, input_two):
if input_one == input_two:
return 0
input_one_bits = cast(input_one, "binary")
input_two_bits = cast(input_two, "binary")
if input_one_bits.count('1') == input_two_bits.count('1'):
for rotation_amount in range(1, 8):
if rotate(input_one_bits, rotation_amount) == input_two_bits:
return rotation_amount
def encrypt_block(self, data, key):
left, right, leftkey, rightkey, modulus, round_info = self._crypt_block(data, key)
speck_round(left, right, leftkey, modulus)
print left, right
for round in range(1, 4):#NUMBER_OF_ROUNDS[round_info]):
leftkey, rightkey = speck_round(rightkey, leftkey, round, modulus)
left, right = speck_round(left, right, leftkey, modulus)
print left, right
replacement_subroutine(data, cast(left, "bytes") + cast(right, "bytes"))
print left, right
print data
print word_to_integer(data[:len(data) / 2]), word_to_integer(data[len(data) / 2:])
def decrypt_block(self, data, key):
print "Decrypting\n", data
left, right, leftkey, rightkey, modulus, round_info = self._crypt_block(data, key)
print left, right
for round_number in range(1, 4):#NUMBER_OF_ROUNDS[round_info]):
leftkey, rightkey = speck_round(rightkey, leftkey, round_number, modulus)
print left, right
for round in reversed(range(1, 4)):#NUMBER_OF_ROUNDS[round_info])):
left, right = invert_speck_round(left, right, leftkey, modulus)
print left, right
leftkey, rightkey = invert_speck_round(rightkey, leftkey, round, modulus)
left, right = invert_speck_round(left, right, leftkey, modulus)
replacement_subroutine(data, cast(left, "bytes") + cast(right, "bytes"))
def encrypt_block(self, data, key):
left, right, leftkey, rightkey, modulus, round_info = self._crypt_block(
data, key)
speck_round(left, right, leftkey, modulus)
print left, right
for round in range(1, 4): #NUMBER_OF_ROUNDS[round_info]):
leftkey, rightkey = speck_round(rightkey, leftkey, round, modulus)
left, right = speck_round(left, right, leftkey, modulus)
print left, right
replacement_subroutine(data,
cast(left, "bytes") + cast(right, "bytes"))
print left, right
print data
print word_to_integer(data[:len(data) / 2]), word_to_integer(
data[len(data) / 2:])
def decrypt_block(self, data, key):
print "Decrypting\n", data
left, right, leftkey, rightkey, modulus, round_info = self._crypt_block(
data, key)
print left, right
for round_number in range(1, 4): #NUMBER_OF_ROUNDS[round_info]):
leftkey, rightkey = speck_round(rightkey, leftkey, round_number,
modulus)
print left, right
for round in reversed(range(1, 4)): #NUMBER_OF_ROUNDS[round_info])):
left, right = invert_speck_round(left, right, leftkey, modulus)
print left, right
leftkey, rightkey = invert_speck_round(rightkey, leftkey, round,
modulus)
left, right = invert_speck_round(left, right, leftkey, modulus)
replacement_subroutine(data,
cast(left, "bytes") + cast(right, "bytes"))
def _test_encrypt():
data = "\x00" * 14
key = ("\x00" * 15)
outputs = []
for key_count, key_byte in enumerate(range(256)):
_key = bytearray(key + chr(key_byte))
key_parity = xor_parity(_key)
pride.functions.utilities.print_in_place(str(key_count / 256.0) + '% complete; Current bias: {}'.format(float(outputs.count(1)) / (outputs.count(0) or 1)))
for count in range(65535):
_data = bytearray(data + cast(cast(count, "binary").zfill(16), "bytes"))
plaintext = _data[:]
# print len(_data), count
encrypt_block(_data, _key)
ciphertext = _data[:]
plaintext_parity = xor_parity(plaintext)
ciphertext_parity = xor_parity(ciphertext)
outputs.append(1 if plaintext_parity ^ ciphertext_parity == key_parity else 0)
zero_bits = outputs.count(0)
one_bits = outputs.count(1)
print float(one_bits) / zero_bits, one_bits, zero_bits
def p_box(input_bytes):
""" Data concentrating permutation box. Evenly distributes input bits amongst output. """
bits = cast(bytes(input_bytes), "binary")
# if a 64 bit block was acceptable, the operation would be this simple:
# for index, byte in enumerate(int(bits[index::8], 2) for index in range(8)):
# input_bytes[index] = byte
bit_count = len(bits)
word_size = bit_count / 8
word_size_in_bytes = word_size / 8
for index in range(8):
bits_at_index = bits[index::word_size]
_index = index * word_size_in_bytes
for offset, _bits in enumerate(slide(bits_at_index, 8)):
input_bytes[_index + offset] = int(_bits, 2)
def p_box(input_bytes):
""" Data concentrating permutation box. Evenly distributes input bits amongst output. """
bits = cast(bytes(input_bytes), "binary")
# if a 64 bit block was acceptable, the operation would be this simple:
# for index, byte in enumerate(int(bits[index::8], 2) for index in range(8)):
# input_bytes[index] = byte
bit_count = len(bits)
word_size = bit_count / 8
word_size_in_bytes = word_size / 8
for index in range(8):
bits_at_index = bits[index::word_size]
_index = index * word_size_in_bytes
for offset, _bits in enumerate(slide(bits_at_index, 8)):
input_bytes[_index + offset] = int(_bits, 2)
def word_to_integer(word):
return cast(cast(bytes(word), "binary"), "integer")
def word_to_integer(word):
return cast(cast(bytes(word), "binary"), "integer")
def exotic_padding(hash_input, rate):
hash_input += '1'
while len(hash_input) < rate:
hash_input = cast(unpack_factors(cast(hash_input, "binary")), "bytes")
return hash_input
def exotic_padding(hash_input, rate):
hash_input += '1'
while len(hash_input) < rate:
hash_input = cast(unpack_factors(cast(hash_input, "binary")), "bytes")
return hash_input
def pbox(word):
binary_word = cast(word, "binary")
return int(''.join(binary_word[offset::8] for offset in range(8)), 2)