olemus
(a) sertifikaatide väljaandmise tavade määrang
(b) formaalne dokument, mis määratleb konkreetse PKI

NIST SP 800-57 Part 2:
a statement of the practices that a certification authority employs in issuing certificates

ülevaateid
https://en.wikipedia.org/wiki/Certification_Practice_Statement

standadid
https://tools.ietf.org/html/rfc3647
https://tools.ietf.org/html/rfc7382

näiteid
https://www.sk.ee/en/repository/CPS

https://www.enisa.europa.eu/publications/security-certification-practice-in-the-eu-information-security-management-systems-a-case-study/at_download/fullReport

http://www.cacert.org/policy/CertificationPracticeStatement.html

https://www.globalsign.com/en/repository/TrustedRoot%20Template%20CPS.pdf