In checking the digital signature, the verifier ________.
A) decrypts the digital signature it received with the supplicant's public key to get the message digest
B) hashes the plaintext message with the same algorithm used by the sender to get the message digest
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

The verifier hashes the original plaintext message with the same algorithm used by the sender to get the message digest. It then compares this message digest with the one that was included in the digital signature. If they match, the digital signature is validated. The verifier does not need to decrypt the digital signature with the supplicant's public key to get the message digest.

In Checking the Digital Signature, the Verifier ________