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Outsourced ciphertext-policy attribute-based encryption with partial policy hidden
International Journal of Distributed Sensor Networks ( IF 2.3 ) Pub Date : 2020-05-01 , DOI: 10.1177/1550147720926368
Jinxia Yu 1 , Guanghui He 1 , Xixi Yan 1 , Yongli Tang 1 , Rongxia Qin 1
Affiliation  

Attribute-based encryption is an efficient and flexible fine-grained access control scheme. However, how to realize the attribute privacy concerns in the access policy and optimize the heavy computing overhead have been not adequately addressed. First, in view of the open-access policies formulated by data owners in the cloud environment and the linear growth of bilinear pairing operations with the number of attributes in the decryption process, a verifiable outsourced attribute-based encryption with partial policy hidden scheme is proposed, in which the attribute name of access policy can be sent while attribute value involving sensitive information can be hidden, so nobody can infer information from the access policy. Second, the bilinear pairing operation and modular power operation are outsourced to the cloud server, then users only need to perform constant exponential operation to decrypt. In addition, the proposed scheme is based on the composite order bilinear group and satisfies full secure under the standard model. Finally, compared with other schemes in term of function and performance, it shows that this scheme is more efficient and suitable for resource-constrained mobile devices in outsourcing environment.

中文翻译:

部分策略隐藏的外包密文策略属性加密

基于属性的加密是一种高效灵活的细粒度访问控制方案。然而,如何实现访问策略中的属性隐私问题并优化繁重的计算开销尚未得到充分解决。首先,针对云环境下数据所有者制定的开放访问策略以及解密过程中双线性对操作随属性数量的线性增长,提出了一种带有部分策略隐藏方案的可验证外包属性加密,其中可以发送访问策略的属性名称,而可以隐藏涉及敏感信息的属性值,因此没有人可以从访问策略中推断出信息。二、双线性对运算和模块化幂运算外包给云服务器,那么用户只需要进行常数指数运算即可解密。此外,该方案基于复合阶双线性群,在标准模型下满足完全安全。最后,与其他方案在功能和性能方面相比,表明该方案更高效,更适用于外包环境中资源受限的移动设备。
更新日期:2020-05-01
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