基于ElGamal签名方案的云数据完整性感知方法

基于ElGamal签名方案的云数据完整性感知方法 Sensing Method of Data Integrality in Cloud Server Based on ElGamal Signature Scheme 胡卫 HU Wei 1 2 first-author 张焕国 ZHANG Huanguo 1 魏国珩 WEI Guoheng 1 2 付伟 FU Wei 2 武汉大学计算机学院 武汉大学计算机学院 School of Computer,Wuhan University School of Computer,Wuhan University 海军工程大学信息安全系 海军工程大学信息安全系 Information Security Department,Navy University of Engineering Information Security Department,Navy University of Engineering 基于ElGamal签名方案设计了数据块的签名信息,借助云端文件块辅助管理文件实现对用户数据的监视.方案采用文件块的哈希值参与运算,较之文件块直接参与运算的方式在性能方面有较大提升;论文分析了该方法的安全性.性能分析测试表明该方法是可行的. We designed the signature information of data block based on ElGamal signature scheme.With the auxiliary management implementation file of data block,the user can supervise their data in cloud server.Furthermore it provided the audit evidence with which user can audit the behavior of cloud server.The scheme which is using the data block hash value in operation has greater improvement in performance than the scheme using the data block directly involved in the operation.The security and performance analysis shows that the method is feasible. 云计算 云存储 数据完整性 ElGamal签名方案 cloud computing cloud storage data integrality ELGamal signature scheme 10.14188/j.1671-8836.2013.06.003 TN918.1;TP333 国家自然科学基金资助项目（60970115,61003268,61100042） 2013-06-01 2021-04-01 6 59