Public Key Infrastructure

A framework consisting of standards and services to enable secure, encrypted communication and authentication over potentially insecure networks such as the Internet.

Extended Definition: A framework and services for generating, producing, distributing, controlling, accounting for, and revoking (destroying) public key certificates.

Adapted from: CNSSI 4009, IETF RFC 2828, Federal Bridge Certificate Authority Cross-certification Methodology 3.0, InCommon Glossary, Kantara Identity Assurance Framework 1100, NIST SP 800-63 Rev 1.

Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies ( as of 11 November 2015, Global Standards

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