name: PKI
full_form: Public Key Infrastructure
context: A PKI Portal shall issue a certificate for UE and deliver an operator CA certificate. In both cases, requests and responses are protected by shared key material that has been previously established between UE and a BSF. In PKI terms, the PKI portal is a Registration Authority (RA) who authenticates the certification request based on cellular subscription. PKI Portal may also function as a Certification Authority (CA) who issues certificates. However, this task may also be done in an existing PKI infrastructure towards which the PKI Portal would function as a RA only, and the CA would be in the PKI infrastructure.
description: Public Key Infrastructure (PKI) is a set of technologies used to manage public-private key pairs and digital certificates within an organization. In the context of 3GPP, PKI is utilized for secure authentication and encryption in various network functions.
explanation: The provided context from 3GPP TS 33.221 highlights the role of PKI in issuing certificates and managing shared key material between UE and BSF. This indicates that PKI is a technology standard governing telecommunications operations, hence classified as Technology.
section_title: 4.3.1	PKI Portal
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