BifMaff.py

baseList = [1]
table1 = [0, 1, 0, 1, 0, 1]
table2 = [1, 1, 0, 0, -1, -1]


#Kiem tra moi phan tu deu khac 0
def noZero(aList):
    return all(c != 0 for c in aList)


def encrypt1(list1, list2):
    i = 0
    secretValue = 0
    while True:
        if i >= len(list2):
            break
        newValue = 0
        for shiftValue in range(8):
            a1 = (list1[i] >> shiftValue) & 1
            a2 = (list2[i] >> shiftValue) & 1
            index = a1 + a2 + secretValue + 2
            if table1[index]:
                #Bat bit
                newValue |= 1 << shiftValue
            secretValue = table2[index]
        # Neu do dai list1 nho hon list2 thi them phan tu vao list1
        if i == len(list1):
            list1.append(0)
        #Replace new value
        list1[i] = newValue
        i += 1
    while secretValue != 0:
        # Neu list 1 ko du phan tu tinh tiep thi them vao
        if i >= len(list1):
            list1.append(0)
        newValue = 0
        for shiftValue in range(8):
            a = (list1[i] >> shiftValue) & 1
            index = a + secretValue + 2
            if table1[index]:
                #Max only 255
                newValue |= 1 << shiftValue
            secretValue = table2[index]
        #Replace new value
        list1[i] = newValue
        i+= 1


def encrypt2(list1, list2):
    i = 0
    secretValue = 0
    while True:
        if i >= len(list2):
            break
        newValue = 0
        for shiftValue in range(8):
            a1 = (list1[i] >> shiftValue) & 1
            a2 = (list2[i] >> shiftValue) & 1
            #Chi khac voi encrypt1 tai day. Thay a1 + a2 = a1 - a2
            index = a1 - a2 + secretValue + 2
            if table1[index]:
                #Bat bit len
                newValue |= 1 << shiftValue
            secretValue = table2[index]
        #Neu do dai list1 nho hon list2 thi them phan tu vao list1
        if i == len(list1):
            list1.append(0)
        #Replace new value
        list1[i] = newValue
        i+= 1
    while secretValue != 0:
        #Neu list 1 ko du phan tu tinh tiep thi them vao
        if i >= len(list1):
            list1.append(0)
        newValue = 0
        for shiftValue in range(8):
            a = (list1[i] >> shiftValue) & 1
            index = a + secretValue + 2
            if table1[index]:
                newValue |= 1 << shiftValue
            secretValue = table2[index]
        #Replace new value
        list1[i] = newValue
        i += 1


def RecursiveFunc(list1, list2):
    if not noZero(list1):
        resultList = [0]
        encrypt1(resultList, list2)
        encrypt1(resultList, baseList)
        return resultList
    elif not noZero(list2):
        newList1 = [0]
        encrypt1(newList1, list1)
        encrypt2(newList1, baseList)
        return RecursiveFunc(newList1, baseList)
    else:
        newList2 = [0]
        encrypt1(newList2, list2)
        encrypt2(newList2, baseList)
        newList2 = RecursiveFunc(list1, newList2)
        newList1 = [0]
        encrypt1(newList1, list1)
        encrypt2(newList1, baseList)
        return RecursiveFunc(newList1, newList2)


if __name__ == '__main__':
    aList = [0x1E]
    result = RecursiveFunc(aList, aList)
    print(result)