1) Explain Substitution Technique and write down their merits and demerits.
(ii) Describe in detail Transposition Technique?
2) Write brief notes on:
(i) Security attacks
(ii) Security services.
3) Convert “MEET ME” by using Hill cipher with the key matrix
4)(i) Briefly describe the design principles of block cipher.
(ii) Discuss in detail block cipher modes of operation.
5) Write short notes on:
(i) Fermat and Eluer’s theorem
(ii) Chinese Remainder theorem
6) Carry out encryption and decryption by using RSA Algorithm for the following: P=7; q=11; e=17; M=8.
7) Explain where the miller-rabin algorithm is used
8) What is the purpose of the Sub Bytes?
9) Write down the difference between Sub Bytes and Sub Word?
10) Write down one technique of attacking RSA in detail.