Design And Implimentation Of Mobilephone Security Accessory

The article try to provide a real reliable security solution for mobile phone users by use of PKI technology ,smart card technology and wireless communication technology(GSM, CDMA etc.).The security solution can meet the people's requirement of information safety.The security accessory of mobile phone is a kind of security accessory which can provide some security function designed for mobile phone. The security accessory of mobile phone called security accessory following. Security accessory is an impotant part of the whole solution.The special hardware processor, security smart card, designed for security application was used in security accessory. Within hardware security algorithm coprocessor, security smart card can provide encrypt, decrypt, signature and authentication functions. As well as the security card operating system (COS) was built in security smart card. Security smart card have advantage of wonderful speed and reliability and COS have a good HMI and security system. The use of security smart card and COS can provide all security system and security function needed. Connecting security accessory and mobile phone makes the mobile phone have many security system and functions. This solution provide technical support and meaningful tring for the use of security application on wireless communication.The article describes following parts:1. Resertch background, application and future of security accessory.2. Study and discuss PKI technology and smart card technology.3. Requirement analysis, circuit design of security accessory hardware.4. Requirement analysis, design and applementory of security accessory software.5. To analysis the shortage of security accessory and expect the modification and development of security accessory.