A Certificate Authority (CA) generates a key pair that will be used for encryption and decryption of email. The integrity of the encrypted email is dependent on the security of which of the following?
A Certificate Authority (CA) generates a key pair that will be used for encryption and decryption of email. The integrity of the encrypted email is dependent on the security of which of the following?
The private key is critical for the integrity of the encrypted email because it's used to sign the email and ensure that it hasn't been tampered with in transit. By generating a digital signature with the private key, the recipient can use the corresponding public key to verify that the email's content has not been altered, thus maintaining its integrity. The public key and the other options do not play a direct role in ensuring the integrity of the email in this context.
why not D?
This it tricky question. When you send an e-mail, to ensure integrity you generate hash value from you message. Then you should sign the message and hash by private key. Technicaly hash provides you with integrity. Private key provides somthing like non-repudation. There is not possible to choose Hash here so the private key is the best option.