def keyScheduleRounds(self,
inputkey,
inputround,
desiredround,
returnSubkeys=True):
"""Create the 16 subkeys K[1] to K[16] from the given key"""
if inputround == 0:
inputkey = bytearray2binarylist(inputkey, 8)
key = self.__permutate(self.__pc1, inputkey)
else:
inputkey = bytearray2binarylist(inputkey, 6)
key = self.__permutate(self.__pc2_inv, inputkey)
i = inputround
L = key[:28]
R = key[28:]
while i < desiredround:
i += 1
j = 0
# Perform circular left shifts
while j < self.__left_rotations[i]:
L.append(L[0])
del L[0]
R.append(R[0])
del R[0]
j += 1
while i > desiredround:
# Perform circular right shifts
j = 0
while j < self.__left_rotations[i]:
L.insert(0, L[27])
del L[28]
R.insert(0, R[27])
del R[28]
j += 1
i -= 1
if desiredround == 0:
key = self.__permutate(self.__pc1_inv, L + R)
return binarylist2bytearray(key, 8) if returnSubkeys else key
else:
key = self.__permutate(self.__pc2, L + R)
return binarylist2bytearray(key, 6) if returnSubkeys else key
def sbox_in_first_fbox(self, pt, guess, bnum):
init=bytearray2binarylist(pt, 8)
initPermut = self.__permutate(self.__ip, init)
R = initPermut[32:]
expR = self.__permutate(self.__expansion_table, R)
expR = expR[bnum*6:(1+bnum)*6]
guess = np.unpackbits(np.uint8(guess))
guess = guess[2:]
B = list(map(lambda x, y: x ^ y, expR, guess))
return B
def sbox_in_first_fbox(self, pt, guess, bnum):
init=bytearray2binarylist(pt, 8)
initPermut = self.__permutate(self.__ip, init)
R = initPermut[32:]
expR = self.__permutate(self.__expansion_table, R)
expR = expR[bnum*6:(1+bnum)*6]
guess = np.unpackbits(np.uint8(guess))
guess = guess[2:]
B = list(map(lambda x, y: x ^ y, expR, guess))
return B
def keyScheduleRounds(self, inputkey, inputround, desiredround, returnSubkeys=True):
"""Create the 16 subkeys K[1] to K[16] from the given key"""
if inputround == 0:
inputkey = bytearray2binarylist(inputkey,8)
key = self.__permutate(self.__pc1, inputkey)
else:
inputkey = bytearray2binarylist(inputkey,6)
key = self.__permutate(self.__pc2_inv, inputkey)
i = inputround
L = key[:28]
R = key[28:]
while i < desiredround:
i += 1
j = 0
# Perform circular left shifts
while j < self.__left_rotations[i]:
L.append(L[0])
del L[0]
R.append(R[0])
del R[0]
j += 1
while i > desiredround:
# Perform circular right shifts
j = 0
while j < self.__left_rotations[i]:
L.insert(0,L[27])
del L[28]
R.insert(0,R[27])
del R[28]
j += 1
i -= 1
if desiredround==0:
key = self.__permutate(self.__pc1_inv, L + R)
return binarylist2bytearray(key, 8) if returnSubkeys else key
else:
key = self.__permutate(self.__pc2, L + R)
return binarylist2bytearray(key, 6) if returnSubkeys else key