Abstract: With some insecure factors existing Short Message Service(SMS) system which is on the basis of wireless network, such as the short message will be filched, intercepted and lost. GSM modem based on SMS system for secure communication is discussed and implemented. Solutions of certificate and authentic bytes added in the SMS package are analyzed for secure authentication of the system, and encryption & decryption are called to the SMS package. The study shows that it is necessary to ensure the secure of the SMS system by mutual authentication and encryption.

Key words: Short Message Service(SMS), certificate, secure authentication, encryption and decryption

摘要： 针对当前基于无线网络的短消息系统的一系列不安全的因素(如数据包被窃取、截获及丢失)，提出基于GSM Modem设备的安全短消息系统，引入安全短消息协议，利用证书以及安全认证因子两种方式对手机终端和安全短信网关进行安全认证，调用加解密算法对短消息数据包进行加密传输。研究表明，安全互认证和包加密这2种方式对短消息系统安全是必要的。

关键词: 短消息服务, 证书, 安全认证, 加解密

CLC Number: 

• TP393