F-GSS: A Novel FCSR-Based Keystream Generator

A novel FCSR-based generalized self-shrinking stream sequence generator (called F-GSS) has been proposed. The F-GSS keystream generator has passed the NIST´s statistical test suite, which shows that F-GSS has good pseudo-random properties, and the ESTREAM´s test suite, which shows the efficiency of F-GSS, in terms of high encryption rate for long streams, high encryption rate for different packets, good agility, and low cost for key and IV setup. The hardware simulation test also shows the efficiency of F-GSS, in terms of low hardware overhead and high throughput. The security analysis shows that the F-GSS generator can resist the current available attacks including the most serious attack on the F-FCSR generators.