Final answer:
NIST 800-60 does not apply to the Public Key Infrastructure (PKI) system. PKI is covered by NIST 800-57.
Step-by-step explanation:
The NIST 800-60 system does not apply to the Public Key Infrastructure (PKI) system. NIST 800-60 is a guideline for selecting and specifying security controls for federal information systems, and it covers a wide range of systems and technologies. However, PKI is a specific system used for managing digital certificates and encryption keys.
PKI is covered by a different NIST publication, NIST 800-57, which provides guidance on the implementation and operation of a PKI system. So, if you're looking for information on PKI, you should refer to NIST 800-57 instead of NIST 800-60.