摘要
提出一种支持直接撤销的属性基加密方案,首先给出支持直接撤销的属性基加密定义和安全模型,其次给出具体的支持撤销的密文策略——属性基加密方案并对安全性进行证明,最后,与其他方案对比显示,该方案在密文和密钥长度方面都有所减少。该方案可以实现对用户进行即时撤销,当且仅当用户所拥有的属性满足密文的访问结构且不在用户撤销列表内时,才能使用自己的私钥解密出明文。
In order to support fine-grained attribute revocation in direct revocation model, an attribute-based encryption scheme with efficient revocation was proposed. The model of ABE supporting attribute revocation was given, and a concrete scheme was constructed which was proven its security under the standard model. Compared to the existing related schemes, the size of ciphertext and private/secret key was reduced. In additional, the new scheme achieved fine-grained and immediate attribute revocation which is more suitable for the practical applications.
出处
《通信学报》
EI
CSCD
北大核心
2016年第5期44-50,共7页
Journal on Communications
基金
国家自然科学基金资助项目(No.61300216)
河南省科技攻关基金资助项目(No.132102210123
No.152102410048)
河南省教育厅科研项目(No12A520021
No.16A520013)
河南理工大学博士基金资助项目(No.B2013-043)~~
关键词
属性基加密
属性撤销
直接撤销
访问控制
attribute-based encryption
attribute revocation
direct revocation
access control
