How does the TLS protocol work?

by | Mar 7, 2017 | CCNA, CCNP, CompTIA, Encryption, Online Banking Security, Security Fundamentals

TLS

What is the TLS or Transport Layer Security Protocol?

When two hosts communicate with each other over an unsecured network and they want to transfer sensitive data between them, especially for bank transactions or e-commerce transactions, they must use an encrypted and secure connection. The SSL or Secure Socket Layer was developed by Netscape for that purpose. It ensured security for bank and e-commerce transactions over the unsecured network.

Protocols in the Application Layer need to remain unchanged yet provide communication security. Hence, SSL was implemented in the Session Layer.

SSL 2.0 was the first publicly released version of the protocol. But, soon security flaws were found in it. So, SSL 3.0 replaced SSL 2.0. TLS 1.0 is an upgraded version of SSL 3.0. (How is TLS different from SSL?)

How does the TLS protocol work?

TLS

 
Once a client starts communication with the server, the TCP connection gets established following …

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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