Exemplo n.º 1
0
def getKeySetRound5(o1, o2, sNo):
    POutputXor = o1[32:64] ^ o2[32:64] ^ bitarray(pyDES.hex_to_binary(inputs[sNo][0]))
    SOutputXor = pyDES.shuffle(POutputXor, PInverse, "Binary")
    SOutputXorInt = int(SOutputXor[sNo * 4 : (sNo + 1) * 4].to01(), 2)
    ExpandOutput1 = pyDES.expand(o1[0:32])
    ExpandOutput2 = pyDES.expand(o2[0:32])
    SInputXor = ExpandOutput1 ^ ExpandOutput2
    SInputXorInt = int(SInputXor[sNo * 6 : (sNo + 1) * 6].to01(), 2)
    pairs = XORProfile[str(sNo)][str(SInputXorInt)][str(SOutputXorInt)][0]
    keyset = set()
    for item in pairs:
        possibleKey = item[0] ^ int(ExpandOutput1[sNo * 6 : (sNo + 1) * 6].to01(), 2)
        keyset.add(possibleKey)
    return keyset
Exemplo n.º 2
0
def getKeySet(input, output, sBoxNumber):
    POutput = output[32:64] ^ input[0:32]
    SOutput = pyDES.shuffle(POutput, PInverse, "Binary")
    XOROutput = mapSBoxInverse(SOutput, sBoxNumber)
    ExpandOutput = pyDES.expand(input[32:64])
    outsBox = ExpandOutput[sBoxNumber * 6 : (sBoxNumber + 1) * 6]
    keyset = set()
    for i in range(0,4):
        keyset.add((outsBox ^ XOROutput[i]).to01())
    return keyset
Exemplo n.º 3
0
def getKeySetRound3(i1, o1, i2, o2, sNo):
    POutputXor = o1[32:64] ^ o2[32:64] ^ i1[0:32] ^ i2[0:32]
    SOutputXor = pyDES.shuffle(POutputXor, PInverse, "Binary")
    SOutputXorInt = int(SOutputXor[sNo * 4 : (sNo + 1) * 4].to01(), 2)
    ExpandOutput1 = pyDES.expand(o1[0:32])
    ExpandOutput2 = pyDES.expand(o2[0:32])
    SInputXor = ExpandOutput1 ^ ExpandOutput2
    SInputXorInt = int(SInputXor[sNo * 6 : (sNo + 1) * 6].to01(), 2)
    #print XORProfile
    #print XORProfile[str(sBoxNumber)][str(SInputXorInt)][str(SOutputXorInt)]
    pairs = XORProfile[str(sNo)][str(SInputXorInt)][str(SOutputXorInt)][0]
    #print pairs
    keyset = set()
    #print SInputXorInt, SOutputXorInt
    for item in pairs:
        possibleKey = item[0] ^ int(ExpandOutput2[sNo * 6 : (sNo + 1) * 6].to01(), 2)
	#print item[0] ^ item[1]
	#print possibleKey
	#a = pyDES.mapSBox(constants.sBoxes[sBoxNumber], bitarray(format(item[0], 'b').zfill(6)))
	#b = pyDES.mapSBox(constants.sBoxes[sBoxNumber], bitarray(format(item[1], 'b').zfill(6)))
	#print item[0] ^ item[1], int((a ^ b).to01(), 2)
        keyset.add(format(possibleKey, 'b').zfill(6))
    return keyset