The way of scrambling computer data is called encryption so it can only be read by authorized people. It is the one of the best way of securing data over the internet. To read the encrypted data you must have access to the password or secret key to decry-pt it. Encryption is just taking some information that are understandable and scrambling it so it become understandable and again turning it back into original form– Technical the encrypted data is called cipher text and decrypted as plain text.
It is essential for the data security and mostly used by banks and online shopping nowadays in email and instant message to check the transmitted data’s genuineness.
Encryption is the one of the recent news. Must of the government around the world implement it for legalization of digital data and safe diplomatic data communication.
How encryption works
Normal information or data referred to as plain text, and it is encrypted using an encryption key and encryption algorithm. This process converting plain text to cipher text that can be decrypted viewed to its original form if decrypted with the correct key.
Encryption and Decryption is simply the inverse process. Following the same process but reversing the order in which the keys are used. Nowadays encryption algorithms are divided into two categories: symmetric and asymmetric.

Symmetric-key ciphers which use same secret key for encryption and decryption of message or file. The most used symmetric key algorithm is AES (Advance encryption system) which was created at first for the protection of governmet data. The same secret key is used for encryption and decryption of data. The secret key should well know to sender as well receiver. The sender may exchange secret again using encryption for more enhancement of security.
Asymmetric algorithm know as public-key cryptography which use two different keys which are mathematically linked. Private and Public .Public can be shared with everyone where private is kept secret. RSA is the most popular used asymmetric algorithm because in this algorithm both private and public key can encrypt a message.The opposite key is used for decry-pt the message.