Shared Secret - Glossary | CSRC (2024)

Definitions:

A secret value that has been computed during a key-establishment scheme, is known by both participants, and is used as input to a key-derivation method to produce keying material.
Sources:
FIPS 203 under shared secret

A secret value that has been computed using a key agreement algorithm.
Sources:
NIST SP 800-135 Rev. 1 under Shared secret

A secret used in authentication that is known to the subscriber and the verifier.
Sources:
NIST SP 800-63-3

A secret value that has been computed during the execution of a key-establishment scheme, is known by both participants, and is used as input to a key-derivation method to produce secret keying material.
Sources:
NIST SP 800-56B Rev. 2 under Shared secret

A secret value that has been computed during an execution of a key-establishment scheme between two parties, is known by both participants, and is used as input to a key-derivation method to produce keying material.
Sources:
NIST SP 800-133 Rev. 2 under Shared secret

A secret value that is computed during a (pair-wise) key-agreement transaction and is used as input to derive a key using a key-derivation method.
Sources:
NIST SP 800-175B Rev. 1 under Shared secret

A secret value that has been computed using a key-agreement scheme and is used as input to a key-derivation method.
Sources:
NIST SP 800-57 Part 1 Rev. 5 under Shared secret

The secret byte string that is computed/generated during the execution of an approved key-establishment scheme and used as input to a key-derivation method as part of that transaction.
Sources:
NIST SP 800-56C Rev. 2 under Shared secret

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

Comments about the glossary's presentation and functionality should be sent to secglossary@nist.gov.

See NISTIR 7298 Rev. 3 for additional details.