What is the primary purpose of SSL/TLS?

The primary purpose of SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security) is to encrypt data transmitted between clients and servers. This encryption helps to protect sensitive information from being intercepted and accessed by unauthorized parties during transit. SSL/TLS creates a secure channel over the internet, ensuring that communications between a user’s web browser and the web server are private and integral, safeguarding against eavesdropping and tampering.

The technology works by establishing a secure connection through authentication, encryption, and integrity checks, making it foundational for secure online transactions, such as those involving financial data, personal information, and other confidential communications. The widespread use of SSL/TLS is why many websites now display address bars beginning with "HTTPS", indicating that the site utilizes these security protocols to ensure safer online interactions.

While enhancing website performance, securing email services, and providing backup solutions might utilize cryptographic principles, these are not the primary functions of SSL/TLS. The main focus remains firmly on encrypting data in transit.