Attribute-based encryption for circuits from multilinear maps
发表信息
作者
- Sanjam Garg
- Craig Gentry
- Shai Halevi
- Amit Sahai
- Brent Waters
笔记
In this work, we provide the first construction of Attribute- Based Encryption (ABE) for general circuits. Our construction is based on the existence of multilinear maps. We prove selective security of our scheme in the standard model under the natural multilinear generalization of the BDDH assumption. Our scheme achieves both Key-Policy and Ciphertext-Policy variants of ABE. Our scheme and its proof of security directly translate to the recent multilinear map framework of Garg, Gentry, and Halevi.
在这项研究中，我们首次构建了适用于一般电路的属性基加密(Attribute-Based Encryption, ABE)方案。我们的构建基于多线性映射(multilinear maps)的存在性。我们在标准模型下，基于BDDH假设(BDDH assumption)的自然多线性泛化，证明了该方案的选择性安全性。我们的方案同时实现了基于密钥策略(Key-Policy)和基于密文策略(Ciphertext-Policy)两种ABE变体。我们的方案及其安全性证明可以直接应用于Garg、Gentry和Halevi最近提出的多线性映射框架。