Question

Describe in detail the encryption and decryption process for Simplified DES by showing your results at each step Details of decryption process:

input: 10 bit key = 1 1 1 1 1 1 1 1 1 1 and 8 bit plaintext = 0 0 0 0 0 0 0 0

Output from IP =

Output from first Fk using K2 =

Output from SW =

Output from first Fk using K1 =

Output from IP-1 =

Answer 1

Output from IP = 00000000

Output from first Fk using K2 = 1011

Output from SW =10110111

Output from first Fk using K1 =0111

Output from IP-1 =00001011