A Method for Increasing the Randomness of Lagged Fibonacci Generators

Most of the current economic software solutions are based on distributed Web technologies. This fact has led to a new world of business, full of opportunities. Businesses can benefit now from faster communications, advanced methods of data collection, electronic chains of suppliers and other benefits offered by this new era of information processing. These solutions have increased the efficiency with which firms operate and their financial performances, but, at the same time, have increased the risks of computer insecurity. So, it is required a better level of security of the economic data, reason for what the role of cryptography is becoming increasingly higher. In this sense, the article presents an innovative method to build a cryptographic keystream based on a Fibonacci type pseudorandom number generator.