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4.7.3 Key Establishment

NIST platform security: roots of trust, firmware and secure enclaves FIPS 140-2
All changes in this version
first version loaded 4 SECURITY REQUIREMENTS part of 4.7

Title

Key Establishment

Control

Key establishment may be performed by automated methods (e.g., use of a public key algorithm), manual methods (use of a manually-transported key loading device), or a combination of automated and manual methods. If key establishment methods are employed by a cryptographic module, only Approved key establishment methods shall be used. Approved key establishment methods are listed in Annex D to this standard.

If, in lieu of an Approved key establishment method, a radio communications cryptographic module implements Over-The-Air-Rekeying (OTAR), it shall be implemented as specified in the TIA/EIA Telecommunications Systems Bulletin, APCO Project 25, Over-The-Air-Rekeying (OTAR) Protocol , New Technology Standards Project, Digital Radio Technical Standards, TSB102.AACA, January, 1996, Telecommunications Industry Association.

Compromising the security of the key establishment method (e.g., compromising the security of the algorithm used for key establishment) shall require at least as many operations as determining the value of the cryptographic key being transported or agreed upon.

If a key transport method is used, the cryptographic key being transported shall meet the key entry/output requirements of Section 4.7.4. If a key agreement method is used (e.g., a cryptographic key is derived from shared intermediate values), the shared values are not required to meet the key entry/output requirements of Section 4.7.4.

Documentation shall specify the key establishment methods employed by a cryptographic module.