Weighted Attribute-based Encryption with Parallelized Decryption

被引：2

作者：

Ionita, Alexandru ^{[1
,2
]}

机构：

[1] Romanian Acad, Simion Stoilow Inst Math, Bucharest, Romania

[2] Alexandru Ioan Cuza Univ, Dept Comp Sci, Iasi, Romania

来源：

SECRYPT : PROCEEDINGS OF THE 19TH INTERNATIONAL CONFERENCE ON SECURITY AND CRYPTOGRAPHY | 2022年

关键词：

Attribute-based Encryption; Bilinear Maps; Public-key Encryption; Access Control; Key Policy; CIRCUITS;

D O I：

10.5220/0011278400003283

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Unlike conventional ABE systems, which support Boolean attributes (with only 2 states: 1 and 0, or "Present" and "Absent"), Weighted Attribute-based Encryption schemes also support numerical values attached to attributes, and each terminal node of the access structure contains a threshold for a minimum weight. We propose a Weighted ABE system, with access policy of logarithmic expansion, by dividing each weighted attribute in sub-attributes. On top of that, we show that the decryption can be parallelized, leading to a notable improvement in running time, compared to the serial version.

引用

页码：574 / 579

页数：6

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