Nonce

nounid 3384·updated May 12, 2026
candidate

No definition recorded.

polysemous

Classifications

Entity Type

Credential0%rule-basedmulti_axis_classifier_low_confidence.v1

Sensitivity

60%llm-generatedllm:claude-haiku-4-5

Information Class

70%llm-generatedllm:claude-haiku-4-5

Variants

plural
Nonces
possessive
Nonce's
pluralpossessive
Nonces'

Framework definitions

NISTIR 7298: Glossary of Key Information Security Terms, Revision 22 sensesview framework →
§1
A value used in security protocols that is never repeated with the same key. For example, nonces used as challenges in challenge-response authentication protocols generally must not be repeated until authentication keys are changed. Otherwise, there is a possibility of a replay attack. Using a nonce as a challenge is a different requirement than a random challenge, because a nonce is not necessarily unpredictable.
§2 · sense_2_pending_review
A random or non-repeating value that is included in data exchanged by a protocol, usually for the purpose of guaranteeing the transmittal of live data rather than replayed data, thus detecting and protecting against replay attacks.
CNSSI-4009 (Glossary of Information Assurance Terms)1 senseview framework →
§1
A random or non-repeating value that is included in data exchanged by a protocol, usually for the purpose of guaranteeing the transmittal of live data rather than replayed data, thus detecting and protecting against replay attacks.
NIST SP 800-631 senseview framework →
§1
A value used in security protocols that is never repeated with the same key. For example, nonces used as challenges in challenge-response authentication protocols generally must not be repeated until authentication keys are changed. Otherwise, there is a possibility of a replay attack. Using a nonce as a challenge is a different requirement than a random challenge, because a nonce is not necessarily unpredictable.

Outgoing relationships

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This term is not the subject of any RDF-style relationship yet.

Incoming relationships

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