When receiving a message from somebody else and decrypting it using the RSA encryption algorithm, what key do we use to decrypt the message?
A) None; the message was not encrypted.
B) None; we do not use a key to decrypt our message.
C) We use the message sender's private key.
D) We use the message's sender public key.

Question

Quizplus · Accepted Answer

When receiving a message encrypted with RSA, we use the sender's public key to decrypt it. This is because the message is encrypted with the sender's private key, which can only be decrypted with their public key.

When Receiving a Message from Somebody Else and Decrypting It