Question

The cipher block is one block longer than the plaintext to accommodate the IV.

(a) True

(b) False

The question was posed to me in an interview for internship.

I want to ask this question from CCM, GCM and Key Wrapping in section Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

Answer 1

The correct option is (a) True

Explanation: The cipher blocks has n+1 cipher blocks, for n plaintext blocks.