Question

In _____________ a sequence of actions is carried out on this block after a block of plain-text bits is chosen for generating a block of cipher-text bits.

(a) Block Cipher

(b) One-time pad

(c) Hash functions

(d) Vigenere Cipher

I have been asked this question during an online interview.

This interesting question is from Cryptography in chapter Cryptography in Security of Cyber Security

Answer 1

Right option is (a) Block Cipher

For explanation I would say: In block cipher, a sequence of actions is carried out on this block after a block of plain-text bits is chosen for generating a block of cipher-text bits. Blocks in these have fixed number of bits.