Attribute-Hiding Predicate Encryption in Bilinear Groups, Revisited
Attribute-Hiding Predicate Encryption in Bilinear Groups, Revisited
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重新审视双线性群中的属性隐藏谓词加密
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
H. Wee
中科院分区：
文献类型：
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作者：
H. Wee
我们介绍了在标准K线性假设下实现主要阶层双线性群体中强属性的新技术。我们的主要结果是一种“部分隐藏”的谓词加密方案私有属性上的内部产品构成了第一个“两者中最好的”，从而导致双线性群体简单地概括了现有的基于属性的加密方案和内部产品谓词加密。我们的方案在半自适应环境中实现了基于模拟的安全性。
We present new techniques for achieving strong attribute-hiding in prime-order bilinear groups under the standard k-Linear assumption. Our main result is a “partially hiding” predicate encryption scheme for functions that compute an arithmetic branching program on public attributes, followed by an inner product predicate on private attributes. This constitutes the first “best of both worlds” result in bilinear groups that simultaneously generalizes existing attribute-based encryption schemes and inner product predicate encryption. Our scheme achieves a variant of simulation-based security in the semi-adaptive setting. Along the way, we introduce a conceptually simpler and more modular approach towards achieving the strong attribute-hiding guarantee.