26 Nov Practice Test Question-Encryption Keys
Preparing for your next security certification exam? After trying your hand at this practice test question, join the FREE CertMike Study Group for the CISSP, Security+, CySA+, PenTest+, CISM+ or SSCP certification to receive new questions each week. You’ll also receive free access to my customized study strategies. Renee would like to send Jackie a message bearing her digital signature. What key should Renee use to create the digital signature?A. Jackie’s Public Key B. Jackie’s Private Key C. Renee’s Public Key D. Renee’s Private Key Correct Answer: D When we're talking about digital signatures, the keys involved are the public and private keys belonging to the person signing the message. So we can immediately eliminate both of Jackie's keys as answer choices here because Jackie is not creating the signature. Next, we need to remember how the digital signature process works. In a digital signature, the signer is the one who needs to use some secret information because nobody other than the authentic signer should be able to create a digital signature. Anyone should be able to verify the digital signature, so the signature should be verifiable with public information. That leads us to the correct answer: Renee would create the signature using her own private key. Then Jackie, or anyone else, can verify the signature by using Renee's public key. Interested in more practice test questions? Get a copy of my official CertMike Practice Test books for the Security+ exam, CISSP exam, SSCP exam, or CySA+ exam and practice with hundreds of questions designed just like the real test! ...