1) Write down the types of attacks on encrypted message. Explain them in detail.
2) What do you mean by cryptanalysis and cryptography?
3) What are the main principles of security?
4) How does simple columnar transposition work?
5) What do you mean by avalanche effect?
6) Explain threat and attack.
7) Write down any four names of substitution techniques.
8) Specify the four categories of security threads.
9) Write down the difference between active and passive attack with example
10) Explain stream cipher and block cipher with suitable example.