摘要
由于云计算环境下的数据量较大,存在的数据特征具有动态变化特性。传统的安全存储方法通过低维映射得到的密钥空间相对较小、安全性不高、很容易被破解,导致存储的安全性能差。提出基于改进密钥的云计算数据安全存储策略,给出帐篷映射和猫映射的一般描述,将其由实数域转换成整数域进行整数运算。引入帐篷映射和猫映射获取改进密钥参数,得到经初始迭代后的密钥,对得到的结果进行取余运算和异或运算,得到密文字节并验证是否均加密完成,判断是否结束迭代,实现对云计算数据的安全存储。实验结果表明,所提策略不仅安全存储性能较高,而且所需时间少,不增加云计算系统的负担。
As the data size is large in cloud computing environment and the existing data has the dynamic change character- istics, the cloud computing data security storage strategy based on the improved secret key is proposed because the traditional se- cure storage method obtains the relatively small key space by low dimensional mapping, which may cause low security, is easy to crack, and makes the storage security worse. The general description of tent mapping and cat mapping is given in this paper. It converts the real number domain to the integer domain to make integer arithmetic. The tent mapping and cat mapping are im- ported to improve the secret key parameters, and get the primarily-iterated secret key. The complementation operation and xor operation for the obtained results are conducted to acquire even encryption cipher byte and verify whether the even encryption is completed, and judge whether the iteration should be finished. In this way, the security storage of cloud computing data is achieved. The experimental resuhs show that the proposed strategy has not only higher safe storage performance, but also needs less time, and does not increase the burden of cloud computing system.
出处
《现代电子技术》
北大核心
2016年第20期31-34,共4页
Modern Electronics Technique
基金
国家自然科学基金(60475022)
关键词
改进密钥
云计算数据
安全存储
帐篷映射
猫映射
improved secret key
cloud computing data
safe storage
tent mapping
cat mapping
