What is Encryption and decryption ?

" Encryption is a technique or method used in order to convert a message or plain text into an unreadable format usually know as cypher, so that unauthorized person can not read that message except an authorized party. On the contrary decoding of cypher into plain text is know as decryption."

Encryption is a powerful method usually used to encode your messages also called plain text into an unreadable format also known as cypher text, so that your message secrecy remain constant. Encryption is in existence before a long time and being used to encode messages so that enemies or an intruder can not change or read that message.
From the beginning many methods has been introduced like Cesar shift cipher technique, however other techniques with more reliability has also been introduced.
Encryption is used by websites while you're doing online banking and shopping. It is also used to encrypt your emails and messages on social networking sites to encrypt your softwares and files, for the sake of secrecy. Encryption was primarily introduced to secure digital data on the computer systems and transmitting via Internet or among networks.
There are two types of encryption methods being used. They are:
1. Symmetric Key Encryption
2. Asymmetric key Encryption

On the contrary Decryption is used to convert cypher text or encoded text into a readable message or plain text. Decryption is a reverse process of encryption.

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