public key infrastructure exchange (PKIX)

Asymmetric encryption focuses on digital signatures and key exchange.

In theInternet Engineering Task Force( IETF), a special working group has been dealing with this topic since 1995 and has developed PKIX (Public Key Infrastructure Exchange), a standard for key exchange on the Internet that supports X.509-basedPKI systems.

PKIX is based on the X.509 authentication standard, and standardization work has significantly expanded the original goal and developed other standards, such as version 3 of X.509 described in RFC 2459 or version 2 of CRL for use on the Internet.

PKIX is supported by the following activities:

PKIX-OSCP-01:Online Certificate Status Protocol( OCSP), described in RFC 2560

PKIX-OSCPC:Caching the Online Certificate Status Protocol, Draft Proposal

PKIX-OSCPX: OCSP Extensions.

PKIX-SVCP: Simple Certificate Validation Protocol (SCVP).

PKIX-TSP: Timestamp Protocol (TSP).