Mystery of SSL - Part 1 - Why Encryption?


We might think why encryption and what is encryption, why can't we just transfer data as it is? To answer this question we should understand what is encryption.

What is encryption?
Let's imagine you're in a class and you have one friend know your language (eg. Tamil). If you want to pass a secret to him, but he not near to you. So you will write down your secret in a piece of paper and ask others to pass that paper to him, but you knew for sure some in the middle going to read it, so you have written in Tamil so others can't understand. Here language you're written is only understandable by your friend (receiving party) which termed Encryption. It is just a coded language only you and your friend understand. Check this video on YouTube where it illustrates what happens your note is readable.




Why encryption?
So if we consider the internet, as like real life our information pass by routers, switches and other networking devices. Assume these are other friends which are passing your note, do you want them to understand the secret that you have written?

Big NO this why we need encryption.

In the next post we see what is SSL?

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