计算机应用研究2016，Vol.33Issue(11)：3435-3441,7.DOI:10.3969/j.issn.1001--3695.2016.11.052
混合云环境中多用户数据共享问题研究
Research on multi-user data sharing in hybrid cloud environment
摘要
Abstract
An improved data sharing mechanism of hybrid cloud environment scheme was proposed based upon full encryption algorithm combined with the (P,Q,O)threshold technology,after studied the problem of users data sharing in hybrid cloud environment.This scheme perfected the data sharing mechanism of hybrid cloud environment,improved the security of users and solved the problem of revocation delay.Firstly,plain text divided into sequential blocks,and then used the improved al-gorithm to guarantee the data storage security.In the scheme,the information of rank and time constraints was generated for each shared user to achieve the management of shared user rights,while established data integrity labels to be verified the in-tegrity of stored data.Finally,simulation experiments conducted to obtain the results that authority revoking has spent less than two seconds,data integrity verification of the change in the data within two percent,simultaneous access to a user only delay five seconds.It shows that the new scheme can improve the data sharing compared with the existing schemes.关键词
多用户数据共享/混合云/全同态加密/权限撤销/时间约束Key words
multi-user data sharing/hybrid cloud/full encryption/revocation of authority/time constraint分类
信息技术与安全科学引用本文复制引用
吴继康,于徐红..混合云环境中多用户数据共享问题研究[J].计算机应用研究,2016,33(11):3435-3441,7.基金项目
国家自然科学基金资助项目（61461009）；国家自然科学基金重点项目（2011BAH14B04）；黔发改投资［2013］2059号 （）
