计算机工程2018，Vol.44Issue(3)：182-188,7.DOI:10.3969/j.issn.1000-3428.2018.03.031
支持策略隐藏的多授权机构属性基加密方案
Multi-authority Attribute-based Encryption Scheme with Policy Hiding
摘要
Abstract
Most existing attribute-based encryption schemes of hidden policies are directed to a single authority,without taking into account the situation where the users' attributes are managed by multi-authority,having the problems such as low-efficient of key generation,single authority easy to be broken through and requirement of environmental security inconsistent with cloud storage.Therefore,a multi-authority Attribute-based Encryption (ABE) scheme is put forward.This scheme realizes complete concealment of access policies so as to protect the privacy of users by improving the access structure.Users' private key is generated by the data owner and the attribute authorities,which improves the efficiency of key generation and resists conspiracy attack from illegal users and authorities.Based on Decisional Bilinear DiffieHellman (DBDH) assumption,the scheme is proved to be chosen-plaintext security under standard model.Experimental results indicate that this scheme can improve the efficiencies of key generation,encryption and decryption.关键词
策略隐藏/多授权机构/属性基加密/云存储/合谋攻击Key words
policy hiding/multi-authority/Attribute-based Encryption (ABE)/cloud storage/conspiracy attack分类
信息技术与安全科学引用本文复制引用
范运东,吴晓平..支持策略隐藏的多授权机构属性基加密方案[J].计算机工程,2018,44(3):182-188,7.基金项目
国家自然科学基金(61672531,61100042) （61672531,61100042）
湖北省自然科学基金(2015CFC867). （2015CFC867）
