If you used the computer to run your business, you might not be able to sell to your customers or place orders with your suppliers while it was down. And you might find that your computer system had been penetrated by outsiders, who perhaps stole or destroyed valuable data, including confidential payment data from your customers. If too much data were destroyed or divulged, your business might never be able to operate! In short, if you operate a business today, you need to make security and control a top priority.

Encryption is an algorithm which converts the message into a form that unreadable known as scrambled message. So that anybody who does not have this ‘key’ cannot view it. Data are encrypted by using a secret numerical code, called an encryption key, that transforms plain data into cipher text. The message must be decrypted by the receiver.

Decryption is the process convert the encrypted data into readable form. This process is to open up the data which locked before.

For example:

You did online transaction shopping, and you have to give your credit card number into website.  In order to secure this transaction encrypted and decryption takes places. Both you as a buyer and seller are given digital certificate by certificate authority which contain public and private key.

Public key is the when you publicly given your message credit card number to seller. You have to convert into scramble form or unreadable form. So, you can protect your valuable data.Then seller wil receive your message and open it up your encryption become private key

There is two methods for encrypting network traffic on the Web are SSL and S-HTTP. Secure Sockets Layer (SSL) and its successor Transport Layer Security (TLS) enable client and server computers to manage encryption and decryption activities as they communicate with each other during a secure Web session.

Secure Hypertext Transfer Protocol (S-HTTP) is another protocol used for encrypting data flowing over the Internet, but it is limited to individual messages, whereas SSL and TLS are designed to establish a secure connection between two computers.