GATE Computer Science (CS) 2016 Shift 1 Solved Paper

Question : 62 of 65

Marks: +1, -0

Consider that B wants to send a message m that is digitally signed to A. Let the pair of private and public keys for A and B be denoted by

K_{x}^{−}

and

K_{x}^{ + }

for x = A, B, respectively. Let K_x(m) represent the operation of encrypting m with a key K_x and H(m) represent the message digest. Which one of the following indicates the CORRECT way of sending the message m along with the digital signature to A?

$\{m, K_{B}^{ + } (H (m) ) \}$
$\{m, K_{B}^{−} (H (m) ) \}$
$\{m, K_{A}^{−} (H (m) ) \}$
$\{m, K_{A}^{ + } (m) \}$

Validate

Go to Question:

Prev Question

Next Question