CAS (Certificate Authority)

A Certificate Authority (CA) is a trusted organization that issues digital certificates to confirm the identity of websites, organizations, or individuals online. These certificates act like digital passports, ensuring that when you visit a website, your browser can verify it’s legitimate and secure. The CA's role is to authenticate the entity requesting the certificate and then digitally sign it, vouching for its authenticity. This helps protect users from fraud and ensures that data exchanged between users and websites remains private and secure. In essence, a CA helps establish trust in digital communications.