Exam SY0-501 topic 1 question 809 discussion

Answer is B, Do not over think few are wrong , move to next question !

Answer is B; In order to encrypt using PKI, the sender has to encrypt with the recipient's public key so the recipient can decrypt with his private key.

Email encryption: the recipient's public key encrypts; the recipient's private key decrypts. Webseite encryption: the website's public key encrypts; the website's private key decrypts; the symmetric key encrypts data in the website session.

How could someone who has supposedly issued a public key, be unable to open a message encrypted through PKI? Did he lose he private key? The given answer (E) appears to be correct: Mike Meyers' Comptia Sec+ 3rd Ed. 2021 p.214 (.pdf copy): Digital Signatures PKI systems incorporate digital signatures to authenticate the source of a message. Encrypting a message with a private key assures the recipient of the source when the corresponding public key decrypts that message. Add in the hashing component of digital signatures and you’ve got a winning combination, as discussed back in Module 2-6.

To encrypt the sender need the receiver's public key,but to decrypt or open the secret message, the reciver uses his own private key so answer is B Public key encryption — the sender uses the receiver’s public key to encrypt the message. It cannot be decrypted by anyone except the receiver who possesses the corresponding private key. This is used to ensure confidentiality.

Should be be B, recipient's private.