Tutorial Home > Internet and Email > Basics > Protecting Yourself Online > Using Certificates
Certificates provide a way to verify the identities of the people and Web sites you communicate with. They also provide a way for you to verify who you are to them. A certificate is like a key that is used to unlock encrypted between parties. A Certificate Authority (CA) verifies the authenticity of a certificate. A CA company such as Verisign can issue and verify certificates. This set of tutorials describes how to obtain and use certificates in Netscape.