Question

The main difference in MACs and digital signatures is that, in digital signatures the hash value of the message is encrypted with a user’s public key.

(a) True

(b) False

The question was posed to me by my college professor while I was bunking the class.

My doubt stems from Hash Functions and Its Applications topic in division Other Public Key Cryptosystems and Cryptographic Hash Functions of Cryptograph & Network Security

Answer 1

Right answer is (b) False

Easy explanation: The main difference in MACs and digital signatures is that, in digital signatures the hash value of the message is encrypted with a user’s private key.