Status: ○ Planned — content to be added.
Digital certificates are the credential artifacts issued under a PKI. They bind an identity to a public key and support a chain of trust to a root certificate so clients and servers can authenticate each other and establish encrypted sessions.
In IACS environments, certificates are used for machine and service identity (for example web interfaces, VPN gateways, mutual TLS between hosts) as well as for human credentials such as smart cards. Lifecycle concerns include issuance, renewal, revocation and secure storage of private keys.
Related: Public Key Infrastructure (PKI) | IEC 62443-3-1 Clause 7.2 Public key | Access Control | FR 1 / SR 1.8 – PKI certificates | Multi-Factor Authentication (MFA) | Virtual Private Networks (VPN)