Research Article

Dynamic Rule Encryption for Mobile Payment

Table 5

Inverse substitution look-up table.

ā€‰InputOutput

Nibble 100001111
00010100
00100101
00111000
01000010
01011100
01101011
01110000
10001010
10011110
10101001
10110111
11001101
11010011
11100001
11110110

Nibble 200001110
00010111
00100100
00111011
01000101
01011001
01101111
01111000
10000011
10010110
10101101
10111010
11000010
11010000
11101100
11110001