generated value. Some authors define pseudo-randomness (or unpredictability) as a requirement for a nonce.

Nonce is a word dating back to Middle English for something only used once or temporarily (often with the construction "for the nonce"). It descends from the construction "then anes" ("the one [purpose]"). A false etymology claiming it to stand for "number used once" or similar is incorrect.

Usage

Authentication

Authentication protocols

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