The rapid spread of the mobile communication technology promotes the communication operators continue to develop new value-added business such as mobile phone banking to increase profits. These operations are often completed by fast compiled code through the short message center. This paper improved traditional binary multiplication algorithm, and presents an optimized low storage NAF point compression multiplication algorithm. It greatly reduces the running time of point multiplication operation, and saves storage space. Here introduces an optimization of BCH iterative decoding algorithm for the design and realization of mobile phone short message paging decoder. The error rate of this decoder algorithm is small. That can greatly enhance the error correcting ability, and improve the quality of short message sending. Through twice compilation of NAF and BCH, it can use conic curve cryptography to encrypt fastly. The velocity of mobile phone SMS paging signal outgoing and incoming will get greatly improved. It can make sure the safety of mobile phone short message bank business transactions and implementation speed.%智能手机的快速普及推动着通信运营商不断开发新的诸如手机银行类的增值业务以增长利润, 这些业务往往通过短信中心来完成. 为了安全快速的实现这些业务, 这里改进了信号发射台短信息的编译码算法, 引入一种优化的 BCH 迭代译码算法, 来设计和实现手机短信寻呼台译码器, 这种译码算法错码率较小, 能大大增强纠错能力, 提高了短信的发送质量. 同时对短信息的加密和解密算法进行了优化, 提出了一种优化的低存储NAF点压缩数乘算法, 大大地缩短了点乘运算的运行时间, 节约了存储空间, 经过 NAF 和 BCH 快速编译后, 利用安全性较高的基于圆锥曲线的 RSA 公钥密码来进行加密, 以提高手机短信寻呼台信号呼出和呼入的速度及其安全性, 保证了手机银行短消息业务的安全快捷实现.
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