Numeric To Numeric Encryption of Databases: Using 3Kdec Algorithm

the volume of data storage capacity has changed a lot as compared with earlier times. As most computers were standalone and only the users had access to data, security was not a big concern. All this changed when computers became linked in networks, in form of small dedicated networks to large LANs, WANs and the World Wide Web. With the growth of networking the security of data became a big issue. Data passes through various networks, communication protocols, and devices to ultimately reach to the user which has made data security increasingly important. Security is becoming one of the most urgent challenges in database research and industry. Instead of building walls around servers, a protective layer of encryption should be provided around specific sensitive data-items. This also allows us to define which data stored in databases are sensitive and thereby focusing the protection only on the sensitive data, which in turn minimizes the delays or burdens on the system that may occur from other bulk encryption methods. This paper describes a highly original and new approach of securing numeric data of databases. It presents a practical solution to the problem where numeric data was converted to alphanumeric type and hence encrypted data was not possible to be stored in the existing numeric field. The proposed algorithm allows transparent record level encryption that does not change the data field type or fixed length.