Abstract:

Since the state council issued the Regulations on the Commercial Passwords in 1990,the KASUMI algorithm is forbidden to use commercially in China,so the China mobile phone is limited in other country.The paper discusses the possibility of using commercial code algorithm SMS4 as f8 core algorithm according to the solutions of special algorithm used in China and international standard algorithm.We also analyses the security performance and the realization efficiency of SMS4 as the f8 core algorithm by experiment.

Key words: Key words 3G, core algorithm, f8 algorithm, SMS4 algorithm