WWW Security 18.1. The expansion of the Internet and the World Wide Web has allowed more people to have access to more and more information. At the same time, the ability to keep information private has become an important issue. It is vital for businesses that want to protect proprietary and other sensitive information, for individuals who want to protect their privacy and for electronic commerce.
Encryption is one of the most effective tools for keeping the information secure.
Cryptography has a long history but for a long time only the government and the military were the users of the cryptographic systems. This has changed in the recent years. Today, more and more civil organizations and individuals are using cryptography to protect information. There are several reasons for this. Second, more and more information is stored on computers and, this has changed the ways information is stored, transmitted and accessed.