Entropy
nounverified·updated May 9, 2026
A measure of the amount of uncertainty that an Attacker faces to determine the value of a secret. Entropy is usually stated in bits.
polysemousNISTIR 7298: Glossary of Key Information Security Terms, Revision 2
Senses
Wordset Dictionary
(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work
Wordset Dictionary
(communication theory) a numerical measure of the uncertainty of an outcome
Classifications
Entity Type
Metric92%llm-generatedllm:claude-haiku-4-5
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Sensitivity
—85%llm-generatedllm:claude-haiku-4-5
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Information Class
—90%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Variants
- synonym
- informationrandomnessselective information
- plural
- Entropies
- possessive
- Entropy's
- pluralpossessive
- Entropies'