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Appendix C PIV Algorithm Identifier Discovery

NIST PIV and digital identity SP 800-73-5 against SP 800-73-4
All changes in this version
added Appendix C PIV Algorithm Identifier Discovery

Title changed

Before · SP 800-73-4

After · SP 800-73-5

PIV Algorithm Identifier Discovery

Control changed

Before · SP 800-73-4

After · SP 800-73-5

Relying parties interact with many PIV Cards with the same native key type implemented by different key sizes and algorithms. 34

34 Table 1 of SP 800-78 lists the various algorithms and key sizes that may be used for each PIV Key Type. For example, a relying party performing the authentication mechanism described in Appendix B.1.2 CAN expect to perform a challenge and response cryptographic authentication with a 3072-bit or a 2048-bit RSA key or an ECDSA (Curve P-256 or Curve P-384) key.

This appendix describes recommended procedures for key size and algorithm discovery (PIV algorithm ID discovery) to facilitate cryptographic authentication initiated by the relying party to make appropriate decisions for granting access to logical networks and systems as well as physical access control systems. The discovery procedure is defined in terms of asymmetric and symmetric cryptographic authentication.