TLS Certificates

TLS successor of SSL – An introduction.

Transport Layer Security or, in short, called TLS. It is the successor of SSL. In our previous post, we have explained in simple language; what are SSL certificates and how it helps secure communication over the internet. But now, let’s shift our focus to a more advanced version, i.e., TLS certificates.
TLS is simply a protocol that establishes an encrypted session between the client and the server over the internet. Then it raises one question what the difference between SSL and TLS certificates is? The answer is both are the same; whatever is explained in the previous post about the working of certificates is the same; however, it can be understood as “Digital certificates using either SSL or TLS protocol “to establish a secure connection.

A Brief History:

The core concept is the same for both SSL and TLS certificates, but the rise of SSL certificates goes back to the year 1995 when the first version of SSL was developed but never released due to some flaws, but during the same year, an advanced version SSL 2.0 was released followed by SSL 3.0 next year. As we know, no protocol or technology can be made perfect SSL 3.0 had security flaws.

But in need of improvement, TLS 1.0 was released in 1999, which was similar to SSL 3.0, but these were not interoperable. Hence must use either one of them at a time. After seven years, in 2006, TLS 1.1 was released, and soon, within two years, it was replaced by another advanced version TLS 1.2, in 2008. TLS 1.2 has become industry standard for a very long time, and now the latest version in TLS 1.3, which is launched after 11 years in 2018. TLS 1.3 offers significant improvements over its earlier versions, and all the big companies are depreciating the usage of TLS 1.0 and TLS 1.1 protocols.

We can analyze ourselves if our browser supports TLS 1.3 or not by using the https://www.cloudflare.com/ssl/encrypted-sni/ link. If the browser doesn’t support it, you miss essential privacy and performance features and should upgrade to the latest software version immediately.

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