Question

Message authentication code is also known as

(a) key code

(b) hash code

(c) keyed hash function

(d) message key  hash function

The question was asked in a job interview.

Origin of the question is Hash Functions and Its Applications topic in section Other Public Key Cryptosystems and Cryptographic Hash Functions of Cryptograph & Network Security

Answer 1

Right choice is (c) keyed hash function

The explanation: Message authentication code is also known as keyed hash function.