The definition and purpose of digital certificates are as follows:

Definition:

A digital certificate is an electronic document that verifies the identity of a person, organization, or device and establishes a secure connection by using cryptographic keys. It acts as a digital passport, ensuring that the entity it represents is legitimate and trustworthy.

Purpose:

The primary purpose of digital certificates is to:

• Authenticate: Confirm the identity of websites, servers, or users.
• Encrypt: Securely exchange data over the internet by enabling encryption.
• Ensure Data Integrity: Prevent data from being altered during transmission.
• Establish Trust: Help create a secure environment for online transactions and communications.