Question

Electronic Code Book process is used in ________

(a) caesar cipher

(b) antisymmetric cipher

(c) block cipher

(d) stream cipher

I got this question in an online interview.

The above asked question is from Cryptography in division Number Theory and Cryptography of Discrete Mathematics

Answer 1

Right answer is (c) block cipher

Explanation: The block cipher takes a plaintext in the chuck of bits and the bits of key are used to produce bits of ciphertext. They operate on blocks of bits at a time and so it is termed as block ciphers. TIn current cryptomeric systems, the messages that are larger than one block long that need to be split up into smaller messages by using a process called Electronic Code Book (ECB).