云计算中基于代理重加密的用户属性撤销研究  

Research on User Attribute Revocation Based on AgentRe Encryption in Cloud Computing

作　　者：邢维嘉 Xing Weijia(Shanxi Polytechnic College,Taiyuan Shanxi 030006,China)

机构地区：[1]山西职业技术学院,山西太原030006

出　　处：《山西电子技术》2025年第2期117-119,122,共4页Shanxi Electronic Technology

摘　　要：在云计算这样开放的动态环境中,用户的属性可能随时发生变化,因此用户通过自身属性在授权中心得到的私钥也会相应发生变化,而用户在更新私钥前的空窗期无法保证数据的安全。针对这一问题,通过引入代理重加密思想对数据进行保护,实现在数据属主不在线时对属主密文进行转换,并且在重加密的整个过程中,数据均属于加密状态,并在安全模型下对该方法进行了安全性证明。In an open and dynamic environment like cloud computing,user attributes may change at any time,so the private key obtained by the user through their own attributes in the authorization center will also change accordingly.The blank window period before updating the private key cannot guarantee the security of the data.In response to this issue,the concept of proxy re encryption is introduced to protect data,that achieving the conversion of the owner’s ciphertext when the data owner is not online.Throughout the re encryption process,the data belongs to the encrypted state,and the security of this method is proven under the security model.

关 键 词：云计算 访问控制 属性基加密 代理重加密 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]