Certified Ethical Hacker (CEH) Practice Exam 2026 – Your All-in-One Guide to Exam Success!

When User B decrypts the hash using User A's public key, the result is a confirmation of the message's integrity. This process typically involves a digital signature, where User A creates a hash of the message and then encrypts that hash with their private key. When User B receives the message, they can use User A's public key to decrypt the hash.

By decrypting the hash, User B can then compare it to a newly generated hash of the received message. If the two hashes match, it confirms that the message has not been altered in transit and that it indeed came from User A. This confirmation process is a fundamental component of digital communication, providing both authenticity and integrity to the transmitted message.

The other options relate to aspects which are not relevant to the action performed in this scenario. For example, accessing User A's message does not occur merely by decrypting the hash, because User B would still need the original message alongside the hash to complete the verification process. Generating a new public key and invalidating a digital certificate do not connect to the action of decrypting a hash, as they pertain to key management and certification rather than the integrity checking process.