Which of the following are common types of certificates issued in a PKI system?

The selection of end-user certificates, server certificates, and code signing certificates represents a comprehensive overview of the common types of certificates used in a Public Key Infrastructure (PKI) system.

End-user certificates are vital as they are issued to users and allow them to authenticate their identity when accessing systems or data. These may also enable secure email communication and provide a means for users to digitally sign documents, ensuring both integrity and authenticity.

Server certificates, on the other hand, are issued to servers to facilitate secure communications over networks, particularly in web environments. These certificates help establish a secure connection (HTTPS) by confirming the server's identity to the client, thereby building trust in the communication channel.

Code signing certificates are used by software developers to sign their applications, providing assurance to users that the software has not been tampered with and is indeed from a verified source. This can significantly reduce the risks associated with software distribution and enhance user trust.

The blend of these certificates underscores the multifaceted roles that PKI plays in securing communications and transactions, making them a fundamental aspect of modern cybersecurity frameworks.