Key share

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Definition(s):

One of n parameters (where n ≥ 2) such that among the n key shares, any k key shares (where k ≥ n) can be used to construct a key value, but having any k−1 or fewer key shares provides no knowledge of the (constructed) key value. Sometimes called a cryptographic key component or key split.
Source(s):
NIST SP 800-57 Part 1 Rev. 5

Glossary Comments

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See NISTIR 7298 Rev. 3 for additional details.

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Key share

Glossary Comments