# This function schedules a 256-bit key into 15 round keys

import numpy as np

np.set_printoptions(formatter={'int':lambda x:hex(int(x))})

RoundConstant = [[0x00, 0x00, 0x00, 0x00],
                 [0x01, 0x00, 0x00, 0x00],
                 [0x02, 0x00, 0x00, 0x00],
                 [0x04, 0x00, 0x00, 0x00],
                 [0x08, 0x00, 0x00, 0x00],
                 [0x10, 0x00, 0x00, 0x00],
                 [0x20, 0x00, 0x00, 0x00],
                 [0x40, 0x00, 0x00, 0x00]]

SubBox =   [[0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76],
            [0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0],
            [0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15],
            [0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75],
            [0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84],
            [0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf],
            [0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8],
            [0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2],
            [0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73],
            [0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb],
            [0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79],
            [0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08],
            [0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a],
            [0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e],
            [0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf],
            [0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16]]

key = [ 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
        0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4]

# Rotate word one bit to the left
def RotWord(a):
    a[0], a[1], a[2], a[3] = a[1], a[2], a[3], a[0]
    return a 

# Subtitute a word
def SubWord(a):
    temp = a
    for i in range(4):
        x = (temp[i] & 0xF0) >> 4
        y = temp[i] & 0x0F
        temp[i] = SubBox[x][y]
    return temp

# XOR two words
def XORWord(a, b):
    temporary = a
    for i in range(4):
        temporary[i] = a[i] ^ b[i]
    return temporary

def KeySchedule(key):
    w = np.zeros((60, 4), np.uint8)
    print(w)
    i = 0

    while (i < 8):
        w[i] = [key[4 * i], key[4 * i + 1], key[4 * i + 2], key[4 * i + 3]]
        i = i + 1
    print(w)
    
    i = 8

    while (i < 60):
        temp = w[i - 1]
        temp_2 = w[i - 8]
        if (i % 8 == 0):
            temp = RotWord(temp)
            temp = SubWord(temp)
            temp = XORWord(temp, RoundConstant[int(i/8)])
        elif (i % 8 == 4):
            temp = SubWord(temp)

        w[i] = XORWord(temp_2, temp)
        # for k in temp:
        #     print(hex(k).replace("0x", "").zfill(2), end=" ", sep=" ")
        # print()
        print(i)
        print(w)
        # print(i)
        # x = 0
        # for j in w:
        #     for k in j:
        #         print(hex(k).replace("0x", "").zfill(2), end=" ", sep=" ")
        #     x = x + 1
        #     if (x % 4 == 0):
        #         print()
        # print("\n")

        i = i + 1

    # x = 0
    # for i in w:
    #     for j in i:
    #         print(hex(j).replace("0x", "").zfill(2), end=" ", sep=" ")
    #     x = x + 1
    #     if (x % 1 == 0):
    #         print()
    # print(w)


KeySchedule(key)
# w.append([1, 2, 3, 4])
# w.append([5, 6, 7, 8])
# w.append(33)
# print(XORWord([1, 2, 3, 4], [5, 6 ,7, 8]))
# print(RotWord([0x01, 0x02, 0x03, 0x04]))
