计算机系统应用
計算機繫統應用
계산궤계통응용
APPLICATIONS OF THE COMPUTER SYSTEMS
2013年
9期
123-128
,共6页
属性的加密%密钥策略%用户撤销%直接撤销模式%访问树
屬性的加密%密鑰策略%用戶撤銷%直接撤銷模式%訪問樹
속성적가밀%밀약책략%용호철소%직접철소모식%방문수
attribute based encryption%key policy%user revocation%direct revocation mode%access tree
提出了一个支持私钥撤销的KP-ABE(Key Policy Attribute Based Encryption)方案，该方案以直接撤销模式对用户进行撤销，能够在不更新系统公钥和任何一个用户的私钥的情况下完成对用户的撤销，更新代价较小。同时该方案基于访问树实现与 Attrapadung 等人基于 LSSS(Linear Secret Sharing Schemes)的支持用户撤销的KP-ABE 方案相比，构造更为简单。该方案的安全性可以规约到标准模型下的判定性 q-BDHE(q-Bilinear Diffie-Hellman Exponent)假设。
提齣瞭一箇支持私鑰撤銷的KP-ABE(Key Policy Attribute Based Encryption)方案，該方案以直接撤銷模式對用戶進行撤銷，能夠在不更新繫統公鑰和任何一箇用戶的私鑰的情況下完成對用戶的撤銷，更新代價較小。同時該方案基于訪問樹實現與 Attrapadung 等人基于 LSSS(Linear Secret Sharing Schemes)的支持用戶撤銷的KP-ABE 方案相比，構造更為簡單。該方案的安全性可以規約到標準模型下的判定性 q-BDHE(q-Bilinear Diffie-Hellman Exponent)假設。
제출료일개지지사약철소적KP-ABE(Key Policy Attribute Based Encryption)방안，해방안이직접철소모식대용호진행철소，능구재불경신계통공약화임하일개용호적사약적정황하완성대용호적철소，경신대개교소。동시해방안기우방문수실현여 Attrapadung 등인기우 LSSS(Linear Secret Sharing Schemes)적지지용호철소적KP-ABE 방안상비，구조경위간단。해방안적안전성가이규약도표준모형하적판정성 q-BDHE(q-Bilinear Diffie-Hellman Exponent)가설。
This paper proposes a Key Policy Attribute-Based Encryption (KP-ABE) scheme supporting user's private key revocation under the direct revocation model, without affecting the public key and any user's private key, so the cost of the revocation is small. Based on the access tree, the construction of our scheme is simpler than the construction proposed by Attrapadung which is based on linear Secret Sharing Schemes(LSSS). Its security can be reduced to the q-Bilinear Diffie-Hellman Exponent (q-BDHE) assumption under the standard model.
