One of your executives needs to send an important and confidential email. You want to ensure that the message cannot be read by anyone but the recipient.
Which of the following keys should be used to encrypt the message?
One of your executives needs to send an important and confidential email. You want to ensure that the message cannot be read by anyone but the recipient.
Which of the following keys should be used to encrypt the message?
To ensure that a message can only be read by the intended recipient, the recipient's public key should be used to encrypt the message. The recipient will then use their private key to decrypt it. This approach leverages the principles of public key infrastructure (PKI) where the public key is used for encryption and the private key is used for decryption, ensuring confidentiality.
Should the answer be sender's private key?
No, If we encrypt with Sender's private key then anyone having senders public key, will be able to read the message.
Using Recipients public key will ensure that only the recipient can decrypt using his/her private key. If sender's private key is used, anyone will be able to decrypt using the senders public key & will only help in "non-repudiation"...of course practically it is a combination of recipients public key and senders private key
I got my CEH only months ago, and there are 2 ways to use PKI: 1.-CONFIDENITAL:When encrypting, you use recipient‘s public key to write a message and recipient use their private key to read it .......THEREFORE C IS OK 2.-NON-REPUDIATON-When signing, you use your private key to write message‘s signature, and recipient‘s use your public key to check if it‘s really yours
Encryption Basics: To ensure that an important and confidential email can only be read by the recipient, you should use the recipient's public key to encrypt the message. The recipient will then use their private key to decrypt it.