# Questions & Answers of Digital Signature and Certificate

Question No. 62

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 withakey $K_x$ 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?