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What Does PKI Mean?

What Does PKI Mean?

PKI is an acronym for Public Key Infrastructure

In cryptography, a Public Key Infrastructure (PKI) is an arrangement that binds public keys with respective user identities by means of a Certificate Authority (CA). The user identity must be unique for each CA.

The binding is established through the registration and issuance process, which, depending on the level of assurance the binding has, may be carried out by software at a CA, or under human supervision.

The PKI role that assures this binding is called the Registration Authority (RA). For each user, the user identity, the public key, their binding, validity conditions and other attributes are made unforgeable in public key certificates issued by the CA.