一种多认证机构可验证的属性基加密方案*

针对属性基加密中中央认证机构所带来的安全隐患问题,提出了一种新型的多认证机构可验证的属性基加密方案。该方案采用由各个认证机构独立生成系统主私钥份额和各自公私钥的方法,去除了中央认证机构,避免了因中央认证机构一旦遭破坏将会导致整个系统崩溃的问题,提高了属性基加密的安全性,同时对密文和密钥的正确性进行了验证。最后,给出了可验证性和安全性分析。

Verifiable attribute base encryption scheme with multi-authority

Aiming at the security issues caused by the central authority in attribute base encryption, this paper proposed a noble multi-authority verifiable attribute base encryption scheme. Compared with other schemes, the central authority was omitted in this scheme which solved the problem that the whole system would crash once the central authority was destroyed, using the technology of making each authority to generate their own master keys parts as well as their public and private keys independently. So the security of the system was improved. At the same time,it verified the correctness of the ciphertext and the keys. In addition, it gave the verification and security analysis.