Key Set Filtering LED Cipher

key_set_filtering_led.py

keyspace = 0
for a in fault_values['a']:
    for b in fault_values['b']:
        for c in fault_values['c']:
            for d in fault_values['d']:
                k0_4_8_12 = sxis[('a', 0)][a].intersection(sxis[('d', 1)][d]).intersection(sxis[('c', 2)][c]).intersection(sxis[('b', 3)][b])
                k1_5_9_13 = sxis[('a', 3)][a].intersection(sxis[('d', 0)][d]).intersection(sxis[('c', 1)][c]).intersection(sxis[('b', 2)][b])
                k2_6_10_14 = sxis[('a', 2)][a].intersection(sxis[('d', 3)][d]).intersection(sxis[('c', 0)][c]).intersection(sxis[('b', 1)][b])
                k3_7_11_15 = sxis[('a', 1)][a].intersection(sxis[('d', 2)][d]).intersection(sxis[('c', 3)][c]).intersection(sxis[('b', 0)][b])

                keyspace += len(k0_4_8_12) * len(k1_5_9_13) * len(k2_6_10_14) * len(k3_7_11_15)

                print '(k0, k4, k8, k12): ', k0_4_8_12
                print '(k1, k5, k9, k13): ', k1_5_9_13
                print '(k2, k6, k10,k14): ', k2_6_10_14
                print '(k3, k7, k11,k15): ', k3_7_11_15