面向网络视频环境的高安全嵌入式路由器设计

摘要

针对目前网络视频传输过程靠单一方案实施加密处理且都是依靠计算机平台的问题,设计了面向网络视频环境的采用综合加密方案的高安全性嵌入式路由器.利用FPGA开发系统与uclinux将Qi超混沌、Logistic映射、Baker映射和Cat映射的算法应用于视频加密与解密,综合采用了在线加密、离线加密、随机加密以及多重加密的方式使数据的安全性更强;创建分包协议解决了uclinux TCP/IP栈小的缺陷以及网络丢包问题.经过长时间测试,系统能够稳定运行且具有较高的安全性.系统所采用的处理器为87MHz,内存为10M,以较低的硬件成本实现了复杂的加密算法,性价比高,且具有很好的可移植性,平台的应用前景广阔.%In view of the current network video transmission process by a single program implementation of encryption and rely on computer platform, we design for video network environment of the integrated encryption scheme of safety critical embedded router. The use of FPGA development system and uClinux will Qi hyperchaotic, logistic mapping, baker map and cat map algorithm is applied to video encryption and decryption, the encryption, on-line and off-line encryption and random encryption and multiple encryption way so that data security is stronger; create a subcontracting agreement to resolve the uClinux, TCP / IP stack small defects and the problem of packet loss. After long time testing, the system can run stably and has high security. System used by the processor for 87MHz, memory is 10m, with lower hardware cost achieve the complicated encryption algorithms, high price, and has good of transplantation and the application foreground of the platform broad.