 Certificate authorities

A Certificate Authority (CA) is a trusted entity that issues digital certificates used in various forms of secure communication, including SSL/TLS for websites, email security, and document signing. The role of a CA is crucial in the context of public key infrastructure (PKI), which underpins secure communications over the internet. Here are some key points about Certificate Authorities: 1. **Digital Certificates**: A digital certificate binds an entity (like a person, organization, or device) to a public key.