Question

Case b ( refer Figure 1 From The chapter Message Authentication Codes in William Stallings )is an example of digital signature.

(a) True

(b) False

The question was asked in semester exam.

Asked question is from Hash Functions and Its Applications in section Other Public Key Cryptosystems and Cryptographic Hash Functions of Cryptograph & Network Security

Answer 1

The correct choice is (a) True

To explain I would say: Yes, case b is an example of digital signature as the hash value of the message is encrypted with a user’s private key.