Intermediate
Cybersecurity & Cryptography
Q67 / 100
What is the purpose of a nonce in cryptographic protocols?
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Incorrect.
The correct answer is C) A number used only once in a cryptographic communication to prevent replay attacks and ensure uniqueness of encrypted output
C
Correct Answer
A number used only once in a cryptographic communication to prevent replay attacks and ensure uniqueness of encrypted output
Explanation
A nonce (number used once) ensures that encrypting the same plaintext twice produces different ciphertext, and prevents attackers from replaying captured messages. Used in TLS handshakes, AES-GCM, and authentication protocols.
Progress
67/100