View all newsletters
Receive our newsletter - data, insights and analysis delivered to you
  1. What Is
April 3, 2017

What is TLS?

The successor to SSL, TLS keeps web communications secure.

By James Nunns

Transport Layer Security (TLS) is designed to provide privacy and data integrity for communicating applications.

The cryptographic protocol, which secures communications over a computer network, is an evolution of Netscape’s Secure Sockets Layer (SSL) protocol.

TLS secures communications between servers and web browsers. This means that sensitive information such as credit card numbers and passwords can be sent to the server without fear of interception.

How does TLS work?

The plain text that the visitor to the web site sends to the server is encrypted and then decrypted at the other end. This process remains entirely invisible to the user, who simply inputs the information as normal.

When TLS connections are correctly implemented it provides a private connection due to symmetric cryptography that is encrypting the transmitted data. Keys for this are created for each connection and are unique to it.

The generation of the key is based upon a shared secret, a piece of data that is known only to the parties involved, that is negotiated at the start of the session.

Content from our partners
Scan and deliver
GenAI cybersecurity: "A super-human analyst, with a brain the size of a planet."
Cloud, AI, and cyber security – highlights from DTX Manchester

Websites in our network
Select and enter your corporate email address Tech Monitor's research, insight and analysis examines the frontiers of digital transformation to help tech leaders navigate the future. Our Changelog newsletter delivers our best work to your inbox every week.
  • CIO
  • CTO
  • CISO
  • CSO
  • CFO
  • CDO
  • CEO
  • Architect Founder
  • MD
  • Director
  • Manager
  • Other
Visit our privacy policy for more information about our services, how Progressive Media Investments may use, process and share your personal data, including information on your rights in respect of your personal data and how you can unsubscribe from future marketing communications. Our services are intended for corporate subscribers and you warrant that the email address submitted is your corporate email address.