Which term is used to describe a framework for managing digital certificates and public-key cryptography?

Which term is used to describe a framework for managing digital certificates and public-key cryptography?

• A. Public Key Infrastructure
• B. Virtual Private Network
• C. Intrusion Detection System
• D. Transport Layer Security

Answer: (A)

Public Key Infrastructure is the framework for managing digital certificates and public-key cryptography. It covers the policies, roles, hardware, software, and procedures needed to create, issue, store, distribute, use, and revoke certificates, and to manage keys throughout their lifecycle. The core idea is to establish trust by binding a public key to an identity through certificates that are signed by a trusted authority. Key components include a Certificate Authority that issues and signs certificates, a Registration Authority that authenticates entities requesting certificates, a directory or repository to publish certificates, and a revocation mechanism (like CRLs or OCSP) to invalidate compromised or expired certificates. PKI also relies on standards like X.509 for certificate formats. While TLS depends on PKI to provide encrypted channels and authentication, it is a protocol, not the framework that handles certificate management. VPNs provide secure connectivity, and intrusion detection systems monitor for suspicious activity.

Public Key Infrastructure is the framework for managing digital certificates and public-key cryptography. It covers the policies, roles, hardware, software, and procedures needed to create, issue, store, distribute, use, and revoke certificates, and to manage keys throughout their lifecycle. The core idea is to establish trust by binding a public key to an identity through certificates that are signed by a trusted authority. Key components include a Certificate Authority that issues and signs certificates, a Registration Authority that authenticates entities requesting certificates, a directory or repository to publish certificates, and a revocation mechanism (like CRLs or OCSP) to invalidate compromised or expired certificates. PKI also relies on standards like X.509 for certificate formats. While TLS depends on PKI to provide encrypted channels and authentication, it is a protocol, not the framework that handles certificate management. VPNs provide secure connectivity, and intrusion detection systems monitor for suspicious activity.