1. Differentiate DES and double DES.
2. What is PRNG?
3. Write short notes on linear congruential generator.
4. Write Blum Blum Shub (BSS) generator algorithm. Give an example.
Q19;
1. Explain about RC4 key scheduling, encryption and decryption algorithms in detail.
2. Generate a key stream using RC4 for a simple 4-byte example, where 8 = {0, 1, 2, 3}, Key = {11, 13, 15, 17} and i =j= 0.