Alice posts a public key that matches a private key only she knows. How does Bob encrypt a message that only Alice can read?

Question

Question 43 options:

Bob encrypts the message using the public key provided by Alice.

Bob encrypts the message using the private key provided by Alice.

Bob encrypts the message using both the public and private key provided by Alice.

Bob decrypts the message using the private key provided by Alice.

Answer 1

Bob encrypts the message using the public key provided by Alice.

In public key cryptography, Alice has a public key that she shares with anyone who wants to send her a secure message. Bob uses this public key to encrypt his message, ensuring that only Alice, who has the corresponding private key, can decrypt and read the message.