COMPUTERIZED DATA ENCRYPTION SYSTEM
Having discovered the importance of computers in all ranks and aspects of life, computer system is applicable to almost all human activities and has been employed to automate most activities especially in areas were management data is of outmost importance. Due to unauthorized access to data in database, repose disclosure or modification will invade individual process, computers have been produced with an encipher and decipher package in various computer language like C++, pascal, Fortran, visual basic etc. voting modified from or RSA cipher encryption, the package is two keys are required. The two keys are public key and secret key respectively. The project is aimed at developing a computer data security system using data encryption. It also takes a look at the present data security of any organizations, identifying the problems encountered in organizations without proper security.
The ongoing dilemma of digital age is balancing convenience against security. Security is a system safeguards for protecting information technology against disasters, system failure, and an unauthorized access that can result in damage, loss or exposure. There are several reports of spammers, crawlers and hackers who break into people’s privacy to gain illegal access to their data. This has posed greater challenges on people who use database, transact online, and internet users. Information is a valuable and costly asset that must be presented, controlled and planned just like other valuable assets within an organization. This work is designed to provide a security mechanism using a computerized data encryption system, readable data is altered into unreadable form to prevent unauthorized access. Encryption is able to use powerful mathematical concept to create coded message that is virtually impossible to break. It is easy to encrypt a message on a simple personal computer so that the biggest computer in the world could not decipher without spending for more time on the problem that exists in the life span of the entire universe.
There are two basic forms of encryption; private key encryption and public key encryption, the same secret key is used by the sender and receiver to encrypt and decrypt message. Public key encryption also known as asymmetric key encryption uses two different keys at once, a combination of a private key and public key, the private key is known only to your personal computer, while the public key is given by your computer to any computer that wants to communicate securely with it. To decode an encrypted message, a computer must use the public key, provided by the originating computer, and its own private key.