Just a few notes on encryption.

Encryption

Encryption along with decryption is a process used to make information safe when it gets transferred from a sender to the receiver.

It’s used to keep sensitive information safe such as passwords, credit card numbers and other types of sensitive information.

Whenever the sender wants to send a message to the receiver, there’s a risk that the message could get intercepted.

So we scramble the message so if the bad guy does intercept it, he still won’t be able to read it. The message is safe.

The receiver unscrambles it in order to get the message.

This scrambling and unscrambling is encryption and decryption.

How encryption works

Let’s take a very simple example. The message is “hello” and the key is “2”.

Each letter in the message gets spun 2 times.

Voila. The message is encrypted.

But anybody can guess that the key is “2”. So let’s make it more secure by choosing a longer and more complex key.

Last modified: October 2, 2018