1. A completely made-up Feistel cipher is defined as follows:

i) The input is 16 bits total in size (each half is 8 bits in size)

ii) K1, K2, K3, K4 are 00011000, 00111100, 01000010, 10011001 respectively

iii) The F function is the logical OR of the two inputs

Given the input of 0100001101010110 what are the values of LE1, RE1, LE2, RE2. Refer to the given figure below.

Show your work.

Output (plaintext) RD,7 = LE, LD1 = RE, Input (plaintext) LE, RE LD 16 = RE, RD16 = LE, Round 1 Round 16 LE RE LD1s = RE, RD s = LE Round 2 Round 15 - K2 LE RE LD,4 = RE, RD4 = LE LE4 RE14 LD, = RE 4 RD2 = LE14 -K15 Round 15 Round 2 - Kys LES RE15 LD, = RES RD, = LES -K16 Round 16 Round 1 -K16 LE16 RE16 LD= REG RD, = LE6 Input (ciphertext) LE17 RE17 Output (ciphertext) Figure 4.3 Feistel Encryption and Decryption (16 rounds)