what is encryption ? and how does it work ?

                              What is encryption? And how does it work?

Encryption is a process that encodes a message or file so that it can be only be read by certain people. Encryption uses an algorithm to scramble, or encrypt, data and then uses a key for the receiving party to unscramble, or decrypt, the information. The message contained in an encrypted message is referred to as plaintext. In its encrypted, unreadable form it is referred to as ciphertext.

Basic forms of encryption may be as simple as switching letters. As cryptography advanced, cryptographers added more steps, and decryption became more difficult. Wheels and gears would be combined to create complex encryption systems. Computer algorithms have now replaced mechanical encryption.

How does it work?

Encryption uses algorithms to scramble your information. It is then transmitted to the receiving party, who is able to decode the message with a key. There are many types of algorithms, which all involve different ways of scrambling and then decrypting information.

When we use the Internet, we're not always just clicking around and passively taking in information, such as reading news articles or blog posts -- a great deal of our time online involves sending others our own information. Ordering something over the Internet, whether it's a book, a CD or anything else from an online vendor, or signing up for an online account, requires entering in a good deal of sensitive personal information. A typical transaction might include not only our names, e-mail addresses and physical address and phone number, but also passwords and personal identification numbers (PINs).

The incredible growth of the Internet has excited businesses and consumers alike with its promise of changing the way we live and work. It's extremely easy to buy and sell goods all over the world while sitting in front of a laptop. But security is a major concern on the Internet, especially when you're using it to send sensitive information between parties.

Resources:

1-https://gpgtools.tenderapp.com/kb/how-to/introduction-to-cryptography

2-https://www.androidauthority.com/encryption-gary-explains-712802/