SBOX-DDT-LAT

Python2 script to convert AES s-box to difference distribution table and linear approximation table

SBOX to DDT

for p1 in range(256)

  for p2 in range(256)

    XOR_IN = p1 ^ p2

    XOR_OUT = sbox[p1] ^ sbox[p2]

    DDT[XOR_IN][XOR_OUT] += 1

SBOX to LAT

for a in range(256)	  

  for b in range(256)

    for i in range(256)  

      LAT[a][b] += a.i ^ b.sbox_val[i]

    LAT[a][b]  = LAT[a][b] - 128