Development Of Cipher Chip And Cipher Card Of KASUMI Algorithm In 3G System

The 3rd Generation mobile radio system (3G) is an oncoming network system, which can be accessed wirelessly all the world. It will not only provide traditional communication service, but also provide the high-speed wireless data service. 3G makes the various mobile application available, at the same time, it also put forward the information security issues. Right now 3G security technology has become one of the key tasks of the Mobile Telecommunications technology. The development of cipher chips of some corresponding cipher algorithms-as a kernel of the core of information security-is very important in 3G Mobile Telecommunications technology.Based on the fact that GSM network is widely used in China and the research actuality on 3G technology all over the world, aiming at WCDMA standard which was developed by the 3rd Generation Partner Project(3GPP), this paper introduces 3G security architecture, the application background of 3G security's core algorithm-KASUMI, and the progress on hardware implementation of KASUMI. Meanwhile the paper analyzes the structure of KASUMI and summarizes the analysis of KASUMI which has already been accomplished.After the investigation of the general technology of hardware implementation, how to implement the KASUMI algorithm using Field Programmable Gate Array (FPGA) device is discussed in detail, and the author develops the Cipher Chip of KASUMI algorithm, the KASUMI Cipher Card based on 32-bits PCI bus, the WDM device driver that used in Windows2000/XP, and the software to demostrate encrypting data link. Finally, an application demostration is constructed with all the above implementation. As an evaluation of the result of the investigation and the development, this system can be used as the base platform for further investigation and test of 3G security technology.