计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2015年
4期
151-155
,共5页
属性撤销%间接撤销模式%属性基加密%适应性安全%密文策略%双系统加密
屬性撤銷%間接撤銷模式%屬性基加密%適應性安全%密文策略%雙繫統加密
속성철소%간접철소모식%속성기가밀%괄응성안전%밀문책략%쌍계통가밀
attribute revocation%indirect revocation mode%Attribute-based Encryption( ABE)%adaptive security%cipher policy%dual system encryption
现有支持属性间接撤销的CP-ABE方案存在撤销代价与安全性难以兼顾的问题,为此,借鉴属性间接撤销思想和双系统加密技术,提出一个适应性安全且支持属性撤销的CP-ABE方案,并基于3素数子群判定问题证明该方案的安全性。分析结果表明,与经典ABE属性撤销方案相比,该方案的效率较高,访问策略表达更为灵活。
現有支持屬性間接撤銷的CP-ABE方案存在撤銷代價與安全性難以兼顧的問題,為此,藉鑒屬性間接撤銷思想和雙繫統加密技術,提齣一箇適應性安全且支持屬性撤銷的CP-ABE方案,併基于3素數子群判定問題證明該方案的安全性。分析結果錶明,與經典ABE屬性撤銷方案相比,該方案的效率較高,訪問策略錶達更為靈活。
현유지지속성간접철소적CP-ABE방안존재철소대개여안전성난이겸고적문제,위차,차감속성간접철소사상화쌍계통가밀기술,제출일개괄응성안전차지지속성철소적CP-ABE방안,병기우3소수자군판정문제증명해방안적안전성。분석결과표명,여경전ABE속성철소방안상비,해방안적효솔교고,방문책략표체경위령활。
In the existing CP-ABE schemes that supporting attribute indirect revocation,the cost of revocation and its security can not be taken into account in the model simultaneously. Based on the idea of attribute indirect revocation and the dual system encryption technique,this paper constructs an adaptively security CP-ABE scheme that supports attribute revocation,and proves the security of the scheme using the 3P-SDP. Analysis result shows that,compared with the ABE schemes proposed before,the proposed scheme is more flexible and efficient in the access policy and attribute revocation.