Research And Implementation Of Secure File Transfer To Multimedia Service Platform

With the promotion of triple play, Promoted the development of interactive multimedia services,and needed more and more files transfer to the Multimedia service platform. On the current network conditions, there are a variety of security problems in the network,so how to ensure the secure transmission of files is a very important research topic.For that,people studied a lot of methods.Now the use of cryptography to encrypt uploaded files is recognized as flexible and effective way to solve these security problems.For the questions of the file secure transmission, transfering file securely to the multimedia service platform has been studied and implemented on the basis of the domestic and foreign research on file security transmission technology and at the same time considering the complex application environments of uploading file to the multimedia services platform. The https protocol is generally used in the secure transmission based on B/S.But https protocol has some defects in security and it not only has to go through the TCP handshakes but also has to go through SSL handshakes protocol.While the upload operation had brought great burden to the server when the contend is uploaded to multimedia service platform.Therefore,based on the above two considerations, https protocol is not applicable to multimedia service platform. In this application scenario, encryption algorithm at http protocol was used to encrypte transmission file in order to ensure file secure transmission. Various types of encryption algorithms and SSL encryption process were researched in this thesis,and specific scenarios were combined. Then,a new encryption method was designed and implemented and it was applied to multimedia service platform, system. The lossless compression algorithm was used to improve the efficiency of encryption and transmission.For system and transmission security,the technology users’logging in and getting authentication were used in multimedia service platform file uploaded in. The lossless compression algorithm was used to improve the efficiency of encryption and transmission.The main work is as follows in this thesis:(1) Researched the technology of file security transmission.Studied the https protocol principles and ensured document security flaw in transmission, Combined with the specific characteristics of multimedia service platform, noting that the https protocol was not suitable for multi-media business platform to protecte files security transmission.(2) Proposed and implemented an encryption method for transfering files safely to multimedia service platform.. The AES, RSA and SHA-1encryption algorithm and SSL encryption were researched,and specific scenarios were combined.Then a new encryption method was proposed,and the algorithm was implemented in Java. After evaluation,the result shows that the algorithm is practicality.(3) Proposed file security stransmission method. At the same time the technology users’logging in and getting authentication were used in order to protect the security of the system. The lossless compression algorithm was used to improve the efficiency of encryption and transmission.Used the Java language to realize them,and described the core code.(4) Evaluated the file security transmission to multimedia services platform.After its functional and performance test,the result shows that it is to achieve the desired goal that designing and implementing files security transmission.Researched the files secure transmission system combining with the practical application scenarios in this paper.Solve the file Security transmission problems of multimedia service platform effectively by using the improved hybrid encryption method. This study provides a reference for the secure transmission of similar problems in the future.