DESIGN AND IMPLEMENTATION OF A COMPUTERIZED DATA SECURITY SYSTEM A CASE STUDY OF LEECON FINANCE AND INVESTMENT LTD. A RESEARCH PROJECT MATERIAL ON COMPUTER SCIENCE
Having discovered the importance of computers in al ranks and aspects of life, computer system is applicable to almost all human activities and has been employed to automats 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++, paschal, 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 know as cryptography to LEECOM FINANCE AND INVESTMENT LTD. it also takes a look at the present data security of LEECOM FINANCE AND INVESTMENT LTD, identifying the problems encountered in carrying out these process.
1.1 BACKGROUND OF THE STUDY
When writing is new in a society, there will not be any data security, since the script itself is a cryptogram intelligible only to the few whom can read or write. But as literacy spread, cryptology appears soon after. This is true for the society in which we fine ourselves today.
According to Demmy (1989) data security simply means the act of protecting something against attack, security is done as a result of safety.
This is done to avoid the misuse of information relating to people of corporate bodies, whereby we protect our computer and data against unauthorized disclosure, modification and also security the system against virus and damage that might be caused by external force.
During the ancient times, record keeping was done by means of primitive notches cut into wooden stick, on bone fragments or marks pressed in clay tables. They soon improved with the development of papyrus and calamus pen. The ancient record keeping was well in hand and reached its peak in Roman Republic and Roman Empire.
The census of 1890 turned out to be especially significant in the evolution of recorded machine processible form, for this census. Harman Hollevith has developed the punched card as a unit record and invented machinery for processing these records some 60years later, the first electronic computer was constructed and their application in record keeping system ushered in the era of computerization.
From this humble beginning of antiquity, record keeping has grow into gigantic dimensions wit the advent of computer network, conferencing through computers and so on.
These have increased the vulnerability of data both in stored form during communication to wire tapping; saving and accessibility. Another reason is that complexity of interaction of individual with their governments. With these new dimension dangers surfaced private and confidential records could easily become public property. This endangering with lives of people concern.