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Split Knowledge

nounid 4210·updated May 9, 2026
candidate

1. Separation of data or information into two or more parts, each part constantly kept under control of separate authorized individuals or teams so that no one individual or team will know the whole data. 2. A process by which a cryptographic key is split into multiple key components, individually sharing no knowledge of the original key, which can be subsequently input into, or output from, a cryptographic module by separate entities and combined to recreate the original cryptographic key.

polysemousMWE

Classifications

Entity Type

Control85%llm-generatedllm:claude-haiku-4-5

Sensitivity

Regulated90%llm-generatedllm:claude-haiku-4-5

Information Class

Cui70%llm-generatedllm:claude-haiku-4-5

Variants

possessive
Split Knowledge's

Framework definitions

NISTIR 7298: Glossary of Key Information Security Terms, Revision 23 sensesview framework →
§1
A procedure by which a cryptographic key is split into n multiple key components, individually providing no knowledge of the original key, which can be subsequently combined to recreate the original cryptographic key. If knowledge of k (where k is less than or equal to n) components is required to construct the original key, then knowledge of any k-1 key components provides no information about the original key other than, possibly, its length.
§2 · sense_2_pending_review
A process by which a cryptographic key is split into multiple key components, individually sharing no knowledge of the original key, that can be subsequently input into, or output from, a cryptographic module by separate entities and combined to recreate the original cryptographic key.
§3 · sense_3_pending_review
1. Separation of data or information into two or more parts, each part constantly kept under control of separate authorized individuals or teams so that no one individual or team will know the whole data. 2. A process by which a cryptographic key is split into multiple key components, individually sharing no knowledge of the original key, which can be subsequently input into, or output from, a cryptographic module by separate entities and combined to recreate the original cryptographic key.
CNSSI-4009 (Glossary of Information Assurance Terms)1 senseview framework →
§1
1. Separation of data or information into two or more parts, each part constantly kept under control of separate authorized individuals or teams so that no one individual or team will know the whole data. 2. A process by which a cryptographic key is split into multiple key components, individually sharing no knowledge of the original key, which can be subsequently input into, or output from, a cryptographic module by separate entities and combined to recreate the original cryptographic key.
FIPS PUB 140-21 senseview framework →
§1
A process by which a cryptographic key is split into multiple key components, individually sharing no knowledge of the original key, that can be subsequently input into, or output from, a cryptographic module by separate entities and combined to recreate the original cryptographic key.
NIST SP 800-57 Part 11 senseview framework →
§1
A procedure by which a cryptographic key is split into n multiple key components, individually providing no knowledge of the original key, which can be subsequently combined to recreate the original cryptographic key. If knowledge of k (where k is less than or equal to n) components is required to construct the original key, then knowledge of any k-1 key components provides no information about the original key other than, possibly, its length.

Outgoing relationships

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Incoming relationships

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