In computing security, which of the following describes a nonce?

In computing security, which of the following describes a nonce?

• A hacking algorythm
• No Other non-Critical Events
• A value used once
• A vector 

 

EXPLANATION

Typically, a nonce is some value that varies with time, although a very large random number is sometimes used. A nonce can be a time stamp, a visit counter on a Web page, or a special marker intended to limit or prevent the unauthorized replay or reproduction of a file.

SOURCE

http://searchsecurity.techtarget.com/definition/nonce