Block cipher

nouncandidate·updated May 9, 2026

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A symmetric key cryptographic algorithm that transforms a block of information at a time using a cryptographic key. For a block cipher algorithm, the length of the input block is the same as the length of the output block.

MWE

Classifications

per-axis with provenance

Entity Type

Capability72%llm-generatedllm:claude-haiku-4-5

?unassignedlast reviewed —

Sensitivity

unclassified

Information Class

unclassified

Variants

3 surface forms

plural: Block ciphers
possessive: Block cipher's
pluralpossessive: Block ciphers'

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