COMPUTER NETWORKING

NETWORK SECURITY

DIGITAL SIGNATURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Examples of a nonce are ____
A
Message Number
B
Timestamp
C
Counter
D
all of these
E
none of these
Explanation: 

Detailed explanation-1: -A nonce can be a timestamp, a visit counter on a webpage or a special marker intended to limit or prevent the unauthorized replay or reproduction of a file.

Detailed explanation-2: -In finance and cryptography, a nonce refers to a randomly generated number, and it is used to verify transactions or perform security checks. For example, the captchas we often find on websites are nonces (albeit with letters included) as they are used just once.

Detailed explanation-3: -A nonce word (also called an occasionalism) is a lexeme created for a single occasion to solve an immediate problem of communication. Some nonce words may acquire a fixed meaning inferred from context and use, possibly even becoming an established part of the language, at which point they stop being nonce words.

Detailed explanation-4: -A nonce in cryptography is a number used to protect private communications by preventing replay attacks. Nonces are random or pseudo-random numbers that authentication protocols attach to communications.

There is 1 question to complete.