What is the primary function of digital certificates?

Digital certificates primarily function to facilitate the secure exchange of information over networks, especially the internet. They act as a means of verifying the identity of individuals, organizations, or devices involved in digital communication. When a digital certificate is presented, it assures both parties that they are communicating with a legitimate entity and that the information being shared is encrypted and secure, enabling trust in the communication process.

The ability to securely exchange information is crucial in preventing unauthorized access and ensuring the integrity and confidentiality of the data being transmitted. Digital certificates play an essential role in protocols like HTTPS, which helps protect sensitive information such as credit card numbers, personal data, and login credentials during online transactions.

Understanding this primary function is fundamental to grasping how secure communications are established in various applications, including secure emails, online banking, and secure web browsing. This establishes a trust framework that underlies many of today's secure digital interactions.