Method Study On The Reliability And Security Of Data Exchange In G/S Mode Based On Middleware

With the rising of emerging applications such as industry application(emergencymanagement, disaster monitoring, Internet of things, smart city), engineeringapplication(moon exploration project, high-resolution earth observation), socialnetwork and electronic business(Facebook, eBay, Google, Taobao), GeographicInformation System(GIS) science techniques have continued to develop. Architecturesof cloud services, such as cross operating system platforms, databases platforms anddevelopment platform middleware research is of great significance. Meanwhile, thenew space information system will always have more complicated demand on data inthe aspect of higher requirements on large information volume, real-time processing,reliability and safety. Therefore, data transmission safety and reliability need furtherresearches. Under the circumstance that the government is advocating keeping low cost,preventing overlapping investment and focusing on expense, the traditional software orsystem functions have their own advantages. However, when they are adopted to solvethe above mentioned issues, they suffer a lot of disadvantages. Therefore, middlewaresystem is established to provide import technical support to application software’sfocus on detail business. This paper, from the aspect of middleware application, basedon the reliability and safety of data exchange, researches into establishment ofmiddleware platform for the reliable and safe data exchange in cloud service system inG/S mode and analyzes the reliable algorithm and safe algorithm in data transmission.The research result is able to provide technical support service to reliability, stability,usability, extendibility and high efficiency of system in with data exchange demand inG/S mode. The major research contents of this paper include:1．The Middleware Platform Research for the reliable and safe data exchangeunder cloud system structure.It adopts the hierarchical model theory to analyze into thehierarchy of message middleware in cloud service system structure. Based on theanalysis result, a reliable and safe message exchange middleware application model isestablished within the cloud service system structure.2．The Analysis on the system data packet format of reliable and safe data exchange middleware.This paper, by making advantage of traditional network interfacedata exchange model, establishes a unique reliable and safe data exchange messagemiddleware data packet format.3．The analysis on the system structure of reliable and safe data exchangemiddleware.Based on TCP/IP protocol, this paper establishes the reliable and safe dataexchange middleware system structure, which, based on hierarchy structure, includesmessage logic level, communication level and network interface level.4．Research and analysis on the safety structure of reliable and safe data exchangemiddleware system.This paper focuses on the different safety algorithms in applicationregistration, node verification, point to point data transmission encryption (decryption)and terminal to terminal data transmission encryption (decryption)5．The establishment of a reliable data transmission model based on that thereliable transmission of data is the basis for system’s practicability.It mainly analyzesthe potential abnormalities during data transmission and analyzes the external andinternal courses for data transmission errors. Based on the analysis result, this paperputs forward corresponding solution by establishing a reliable data transmission model.Based on the above researches, the major achievements and innovations of thispaper are as below:1．Put forward middleware platform, MQMP （Message Queue MiddlewarePlatform）realizing reliability and security data exchange under G/S mode. MQMPprovides safe, efficient and reliable transmission for operation system. In addition, itcan shield effectively complexity of bottom layer transport network, providingtransparent data transmission service towards upper layer application system andguarantee business data can be transmitted to destination “one time but only one time”.It also can be compatible with all kinds of interface of operating systems, networkenvironment, developmental language and tool to effectively support efficient andsteady operation of application system.2．Put forward message transmission reliability model based on local cache.Through the study of the messaging process prone to problems, in theevent-notification mechanism, queue monitoring technology, HTTP mechanism, theactive window mechanism and flow control technology, the use LOG technology, thememory is not a permanent data into DISK permanent data storage, handshakemechanism, user-controllable technology and surveillance techniques, basicsynchronous and asynchronous mechanism on. Presents message transmissionreliability model contains the user interface model, message transmission model, message storage and recovery model (and LOG model). The use of messagetransmission reliability model can provide a model for the process of communication,the communication model can not consider the specific network environment and thespecific details of the network.3． Put forward security architecture based on hierarchical model realizingreliability and security data exchange. Reference design module, drawing on thethinking of hierarchical structure, put forward security architecture containing safetycertificate application, safety certificate node connection, safety certificate datatransmission. The architecture adopting MD5algorithm, fixed cryptographic algorithm,key exchange algorithm of Diff Hellman, RC5encryption algorithm and secret keysaving, local group key distribution and subnet secret key. These implementation auditof software starts, audit of software uses, set the main protective measure of the filetransfer to obtain the password. Layered security architecture can reduce thecomplexity of application development, improve maintainability and availability ofrelated programs.