Which of the following is a correct use of a nonce in a cryptographic system?
To verify the integrity of received messages
To create secure backup copies of private keys
To increase the entropy of generated keys
To ensure unique encryption results for repeated messages
The correct answer is To ensure unique encryption results for repeated messages. A nonce (number used once) is a random or pseudo-random number used to ensure that old communications cannot be reused in replay attacks. In cryptographic systems, nonces are commonly used to ensure that encrypting the same plaintext multiple times will produce different ciphertexts, preventing pattern analysis.
To increase the entropy of generated keys is incorrect because while nonces can contribute to entropy in some contexts, that's not their primary purpose.
To verify the integrity of received messages is incorrect because nonces don't directly verify message integrity; that's typically done with message authentication codes or digital signatures.
To create secure backup copies of private keys is incorrect because nonces aren't used for key backup.
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
All IT & Cybersecurity Package plans include the following perks and exams .
Our pricing is simple. Full access to all certifications and exams in each package, for one price.
As many practice tests for as many topics as you want.
Use study mode non-stop, no limits.
Access to our AI assistant, Bash, trained to help you pass your exam.
Track your scores over time in study mode and report cards.
See how you improve over time, and where you need to focus.
Access our store with even bigger discounts than before.
Unlimited access to all performance questions and be prepared for the real thing.
All IT & Cybersecurity Package plans include unlimited access to the following study materials.
Create an account or sign in to access our study materials.