---
id: "pki"
kind: "glossary-term"
title: "PKI"
language: "en"
category: "Security and abuse"
updated: "2026-10-19T13:15:04Z"
canonical: "https://tldlog.com/glossary/pki/"
translations:
  es: "https://tldlog.com/es/glosario/pki/"
  de: "https://tldlog.com/de/glossar/pki/"
  fr: "https://tldlog.com/fr/glossaire/pki/"
  it: "https://tldlog.com/it/glossario/pki/"
  pt-BR: "https://tldlog.com/pt/glossario/pki/"
  ru: "https://tldlog.com/ru/glossariy/pki/"
  zh-Hans: "https://tldlog.com/zh/cihui/pki/"
---

# PKI

public key infrastructure

The set of certificates, certificate authorities and rules that lets software check who owns a public key, for example that a web server belongs to the domain it claims. TLS certificates for websites are its best-known use. The PKI Consortium, an industry group, runs a yearly conference on post-quantum cryptography.

## related terms

- [TLS](https://tldlog.com/glossary/tls/)
- [CAA record](https://tldlog.com/glossary/caa-record/)
- [DANE](https://tldlog.com/glossary/dane/)
- [DNSSEC](https://tldlog.com/glossary/dnssec/)