Unverified50% confidenceFactExact time
A nonce is a single-use random value, typically generated by the verifier and embedded in the message to be signed, whose core purpose is to prevent replay attacks.
1
Sources
50%
Confidence
Long-term
Relevance
10/16/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe 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.65% similarUnverifiedIdempotency keys are a common means in distributed systems of preventing the same operation from being executed multiple times: the caller carries a globally unique identifier when initiating a request, the server deduplicates on that identifier, and on encountering a duplicate request with the same key it directly returns the first result without re-executing the side effects.63% similarUnverifiedKey designs to prevent replay include: each approval token contains a unique random number (nonce), is bound to a specific action ID and payload hash, has a short validity period, and its used status is recorded on the server side.62% similarUnverifiedIdempotency keys should be bound to business primary keys (such as email_id) rather than generated randomly each time; otherwise, random keys render idempotency protection completely ineffective.62% similarUnverified"Exactly-once" is a distributed systems semantic guarantee: even if a message is sent multiple times, the receiver will process it only once.61% similar
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