Secure Socket Layer (SSL) and Transport Layer Security (TLS) are cryptographic protocols designed to provide security and data integrity for communications over networks. These protocols are commonly used for securing web traffic and ensuring that sensitive information, such as credit card numbers and login credentials, are transmitted securely between clients (e.g., web browsers) and servers.


SSL was developed by Netscape in the mid-1990s and has gone through several iterations. The last version, SSLv3, was released in 1996. SSL was deprecated in 2015 due to security concerns, and it is not recommended for use in modern applications.


TLS is the successor to SSL and is continually evolving with new versions and updates. The most recent version, TLS 1.3, was released in 2018. TLS is widely used and considered the standard for securing web traffic.

How SSL/TLS Works

SSL/TLS operates by encrypting the data transmitted between a client and a server, ensuring that the data cannot be easily intercepted or tampered with. The encryption is achieved using a combination of cryptographic algorithms, key exchanges, and digital certificates.

Here are the key steps in setting up an SSL/TLS connection:

Advantages of SSL/TLS