Access Control Encryption for Equality, Comparison, and More

被引：31
|
作者：
Fuchsbauer, Georg [1 ,2 ]
Gay, Romain [1 ,2 ]
Kowalczyk, Lucas [3 ]
Orlandi, Claudio [4 ]
机构：
[1] CNRS, ENS, INRIA, Paris, France
[2] PSL Res Univ, Paris, France
[3] Columbia Univ, New York, NY USA
[4] Aarhus Univ, Aarhus, Denmark
来源：
PUBLIC-KEY CRYPTOGRAPHY (PKC 2017), PT II | 2017年 / 10175卷
基金：
欧洲研究理事会;
关键词：
STRUCTURE-PRESERVING SIGNATURES; ASSUMPTIONS;
D O I：
10.1007/978-3-662-54388-7_4
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
Access Control Encryption (ACE) is a novel paradigm for encryption which allows to control not only what users in the system are allowed to read but also what they are allowed to write. The original work of Damgard et al. [DHO16] introducing this notion left several open questions, in particular whether it is possible to construct ACE schemes with polylogarithmic complexity (in the number of possible identities in the system) from standard cryptographic assumptions. In this work we answer the question in the affirmative by giving (efficient) constructions of ACE for an interesting class of predicates which includes equality, comparison, interval membership, and more. We instantiate our constructions based both on standard pairing assumptions (SXDH) or more efficiently in the generic group model.
引用
收藏
页码：88 / 118
页数：31
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