In public key encryption, "signing" is the act of ________.
A) adding the password to the challenge message and hashing the two
B) hashing the plain text message
C) encrypting the message digest with its own private key
D) encrypting the message digest with its own public key

Question

Quizplus · Accepted Answer

In public key encryption, signing involves encrypting the message digest with its own private key. This enables the recipient to verify the authenticity of the message by decrypting the signature with the sender's public key and comparing it to a new hash of the message. A digital signature provides integrity and non-repudiation, ensuring that the message has not been altered and that the sender cannot deny sending it.

In Public Key Encryption, "Signing" Is the Act of ________