Friday, May 13, 2016

What is a nonce? (15/250-2016)

In cryptography, a nonce is an arbitrary number that may only be used once.
It is often a random or pseudo-random number issued in an authentication protocol to ensure that old communications cannot be reused in replay attacks.

May include 

  • timestamp (requires clock synchronization between organizations)







Reference:
https://en.wikipedia.org/wiki/Cryptographic_nonce

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