基于身份广播加密的安全性

Security of identity-based broadcast encryption

在对基于身份的加密IBE和广播加密BE的安全性概念归纳分析的基础上,总结了基于身份广播加密的安全概念。首先描述了基于身份广播加密中的两种标准安全概念,并提出了攻击模型的形式化定义;然后介绍了主要的安全性并归纳了它们之间的转化关系;最后,提供了两种构建选择密文安全的基于身份广播加密方案的方法。

Based on the analysis of the security notions for Identity-based Encryption （IBE） and Broadcast Encryption （BE）, this paper proposes the security notions for identity-based broadcast encryption. First, two standard security notions for identity-based broadcast encryption are described, and the formal definition of their corresponding attack models is presented. Then the main securities are introduced and the transformation rules of these securities are summarized. Finally, two general ways for constructing identity-based encryption schemes are provided.