论文标题
基于问责制的多授权密文属性属性
Multi-Authority Ciphertext-Policy Attribute Based Encryption With Accountability
论文作者
论文摘要
基于属性的加密（ABE）是实现细粒度访问控制的有前途的工具。要解决单个权威，访问策略公开的安全问题，而不是可追溯的恶意用户，我们提出了一种多权利性方案。此外，多权利性可能会带来不同机构的勾结。为了解决这些问题，我们提出了一种具有隐藏式策略和访问策略的访问树结构的方案。一旦私钥就可以泄漏了，我们的计划可以泄漏，如果当局彼此共享信息。 Ind-CPA。
Attribute-based encryption (ABE) is a promising tool for implementing fine-grained access control.To solve the matters of security in single authority, access policy public, not traceable of malicious user,we proposed a scheme of multi-authority. Moreover, multi-authority may bring about the collusion of different authorities.In order to solve these problem,we proposed a scheme of access tree structure with policy hidden and access complex.Once the private key is leaked, our scheme can extract the user ID and find it.If the authorities share their information with each other,the scheme avoid them to combine together to compute the key information and decrypt the ciphertext.Finally,the scheme proved to be secure under selective-set of IND-CPA.
