This chapter provides an introduction to the building blocks of a public key infrastructure (PKI). This includes:
Certificates provide the foundation of a public key infrastructure (PKI). Certificates are electronic representations of users, computers, network devices, or services, issued by a certification authority (CA), that are associated with a public and private key pair.
A certificate is a digitally signed collection of information generally 2–4 kilobytes (KB) in size. A certificate typically includes the following information:
Information about the user, computer, or network device that holds the private key corresponding to the issued certificate. ...