Unverified50% confidenceSolutionExact time
The one-time nonce (Number Used Once) mechanism attaches a random string to each authorization credential; after the server consumes it, the nonce is marked as used, and any subsequent request with the same nonce is rejected outright.
1
Sources
50%
Confidence
Long-term
Relevance
9/17/2026
First Seen
Sources
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