计算机科学 ›› 2016, Vol. 43 ›› Issue (1): 186-190.doi: 10.11896/j.issn.1002-137X.2016.01.042
李作辉,陈性元
LI Zuo-hui and CHEN Xing-yuan
摘要： 叛徒追踪和撤销是基于属性的加密(ABE)在实际应用中需要解决的问题,具有扩展通配符的ABE方案(GWABE)能够方便地解决上述问题。目前自适应安全的GWABE方案均在合数阶群上构造。针对合数阶上双线性映射计算开销过大的问题,以对偶正交基技术为基础,提出了一种素数阶群上自适应安全的GWABE方案,同时将该方案的安全性归约到判定性线性假设。性能分析表明,该方案在达到自适应安全的基础上,具有更好的效率。
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