Question

In _______________ the plain-text is processed 1-bit at a time & a series of actions is carried out on it for generating one bit of cipher-text.

(a) Block Cipher

(b) One-time pad

(c) Stream cipher

(d) Vigenere Cipher

This question was addressed to me during an interview for a job.

Question is from Cryptography in section Cryptography in Security of Cyber Security

Answer 1

Right option is (c) Stream cipher

Best explanation: In stream ciphers, the plain-text is processed 1-bit at a time & a series of actions is carried out on it for generating one bit of cipher-text.