Design And Implementation Of Interactive Electronic Technical Manual System Based On AES Encryption And Decryption Algorithm

With the ship on a variety of equipment has become increasingly complex,the military in the training and equipment support process of the technical manual requirements are getting higher and higher.The equipment support manual needs to be produced and released more quickly.At the same time,the technical manual must have the functions of quick access,information retrieval and positioning,and fault isolation and positioning.It can ensure that the equipment is timely and effective in daily use,maintenance and protection.Compared with the traditional technical manual,interactive electronic technology manual(Interactive Electronic Technical Manual,IETM)can reduce equipment support costs,improve user productivity,will be widely used in the future.In this paper,according to the actual demand of interactive electronic technology manual in China,AES encryption and decryption algorithm is used synthetically,and a system of interactive electronic technology manual with multi platform encryption and decryption is designed and implemented.This system consists of PC-side and Android-side two modules,the use of AES on the PC side to encrypt the data file,and then decrypt the data file on the Android side to ensure the security of data files.The main work of this paper is as follows:1.According to the actual needs and field investigation of a research institute in China Shipbuilding Industry,the overall demand of the interactive electronic technical manual system is analyzed comprehensively.According to the functional requirements and performance requirements of the interactive electronic technical manual system and the information technology standard of S1000 D equipment,the overall scheme of the system is designed.The system is mainly composed of two parts: publishing module and operation management module.The publishing and publishing module is designed on the PC side,and the operation management module is designed on the flat side to realize the cross-platform application.2.The system is designed in detail.The publishing and publishing module can parse and verify the equipment data distribution package DDN that conforms to the S1000 D standard.Including project management,packet management,basic information editing,style editing,label settings,authorization management,publishing and other functions.The operation management module is based on the technology information exchange technology equipment maintenance auxiliary module.Including user management,technical information content navigation and retrieval,graphics and multimedia display and control,notes,multimedia courseware learning and knowledge test,work plan auxiliary scheduling and management,resume information records and other functions.The run management module is the final product delivered to the user and is suitable for the touchpad of the Android platform.3.The DDN is developed and implemented,and the AES algorithm is used to encrypt the PC terminal and decrypt on the Android side,and make the proposed algorithm improvement.First,fixed the initialization vector in AES-CBC mode,and then use multithreading technology and reduce the correlation between plaintext and ciphertext,improve the speed of encryption and decryption of large files and the security of data.The system has been successfully applied in a research institute of China Shipbuilding Industry and has been widely praised by the institute.