【摘要】 针对运送存储平台中异步容灾存储存在数据传输量大、网络环境复杂、易受攻击的不足,提出了一种复合加密日志异步容灾方法.用专用日志空间记录写操作的日志,源节点日志先分批后优化以节省传输数据量并减少备份节点操作开销,日志传输中用复合密码加密算法进行安全传送.使用对称密钥加密控制块、随版本号选择的对称密钥加密日志块并使用哈希方法验证传输日志的合法性和有效性.分析和实验表明:选择合适日志空间新方案对源节点性能不造成影响,备份时网络传输量小,加密开销小、可靠性高.更多还原

【Abstract】 To solve the shortcomings of asynchronous disaster-tolerant which suffer from network attacks and bad traffic,a compound encryption logs disaster-tolerant method was proposed,the excursive disks were used to store the writing operation logs in native node and backup node,when writing operation,the logs were stored in native disk and divided into some sessions which were optimized to reduce the unnecessary logs,then were encrypted and send to backup node.The dynamic key method was adapted for encryption algorithm,some hash functions were used for verifying transferred logs by network.After performed operation according to optimized logs,the corresponding logs were deleted in native node and backup node.The presented method has some advantages,such as small transmission quantity,high safety and good resistance to aggressive.The experiments show the new method almost no affects the native node performance,the small quantity of net transmission.更多还原