A CONSTRUCTION OF CIPHERTEXT-POLICY ATTRIBUTE-BASED ENCRYPTION SUPPORTING ATTRIBUTE REVOCATION

摘要：

　　Attribute-based encryption is drawing more attention with its inherent attractive properties which are potential to be widely used in the newly developing cloud computing.However,one of the main obstacles for its application is how to revoke the attributes of the users,this problem is inevitable in practice and also hard to resolve.Though some ABE schemes have realized revocation,they mostly focused on the user revocation that revokes the users whole attributes,or attribute revocation under the indirect revocation model such that all the users private keys will be affected for revocation.In this paper,we first define the model of CP-ABE supporting the attribute revocation under the direct revocation model,in which the revocation list is embed in the ciphertext and none of the users private keys will be affected by the revocation process.Then we propose a construction,and reduce its security to the decision q-BDHE assumption.

关键词： Attribute revocation Attribute based encryption Ciphertext-Policy

作者: Quxin Wu Han Li

作者单位: School of Applied Science,Beijing Information Science and Technology University,Beijing 100085,China

会议类型: 国际会议

会议名称: 2012 2nd IEEE International Conference on Cloud Computing and Intelligence Systems (2012年第2届IEEE云计算与智能系统国际会议(IEEE CCIS2012))

会议地点: 杭州

会议语种:英文

页码: 1869-1874

在线出版日期: 2012-10-30（万方平台首次上网日期，不代表论文的发表时间）