Based On C / S Structure Of The Mobile Police System

The traditional police information system has lots of defects, such as out-of-date information collection, obsolete information management, poor share, redundant construction, ineffective unified command and coordinated combat, etc. In order to solve these problems of the police information system, this paper designs and realizes a more convenient and efficient police comprehensive mobile system which makes use of the wireless mobile platform, the internet platform and police special network platform on the basis of requirement analyses, tasks, characteristics and actual status. Based on police special network, modern mobile communications technology and police information resources, the system provides a powerful support of data for frontline policemen at the work spot. This system has enhanced the efficiency and fighting abilities of frontline policemen in a significant way, and has also provided technical supports for the implementation of police mobile system. The main results in the research are as follows:(1) A kind of wireless mobile police system based on C/S structure is developed. Using middleware technologies, this system adopts the three layer C/S structure to achieve data exchange between the frontline policemen and the data centre. Moreover, the system achieves the system functions and satisfied the performance requirements in the environment of PDA (dopod686).(2) A solution of data transmission is designed for data transmission of wireless police mobile system. In this solution, based on the use of XML data exchange technology, the developed system can ensure that data will be conveniently and reliably transmitted in the network. At the same time, security isolation technology of internal and external network is adopted in the design of system logic structure. In the circumstances of normal data exchange and transmission, the system ensures that the police special network and public networks are completely physical isolation.(3) In order to apply to wireless network communications, a hybrid data encryption algorithm is proposed. The proposed algorithm employs the Advanced Encryption Standard (AES) to realize data encryption, makes use of ECC encryption to encrypt key, and utilize ECC encryption to implement digital signature. Moreover, the algorithm needs smaller storage space, runs faster, requires lower bandwidth, and manages key more conveniently. Applying the algorithms to the wireless mobile police security system, it can encrypt or decrypt data rapidly, solve the problem of key...