IETF PKIX Working Group

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The PKIX (Public-Key Infrastructure X.509) Working Group (PKIX-WG) was assigned — by the Internet Engineering Task Force (IETF) — to develop the necessary Internet standards needed to support a Public Key Infrastructure, based on the X.509 protocol. The working group (WG) was established circa fall of 1995. The working group was concluded in October 2013.[1]

Scope and Standards[edit]

Although the PKIX-WG has accomplished its initial assignment, it was never dissolved — as is commonplace with WGs which exceed their initial scope of work.

Presently, the PKIX-WG profiles PKI standards of the International Telecommunication Union, and develops new standards apropos to the use of X.509-based PKIs with the Internet:

  1. Profiled X.509 version 3 certificates and version 2 Certificate Revocation Lists (CRL) for use with the Internet (RFC 2459)
  2. The Internet X.509 Public Key Infrastructure Qualified Certificates Profile (RFC 3039)
  3. The Internet X.509 Public Key Infrastructure Certificate Policy and certification Practices Framework (RFC 2527 — Informational)
  4. Profiles for the use of Attribute Certificates (RFC [undetermined])
  5. LDAP (Lightweight Directory Access Protocol) v2 for certificate and CRL storage (RFC 2587)


  1. ^ Bradner, Scott. "Concluded Working Groups". Internet Engineering Task Force. Retrieved 17 September 2015. 

External links[edit]