应用科学学报 ›› 2017, Vol. 35 ›› Issue (5): 626-633.doi: 10.3969/j.issn.0255-8297.2017.05.008

• 2016中国计算机应用大会遴选论文 • 上一篇    下一篇

基于多线性映射的低开销BEPM方案

吕立群, 杨晓元, 汪晶晶, 程璐   

  1. 武警工程大学 电子技术系, 西安 710086
  • 收稿日期:2016-10-02 修回日期:2016-12-05 出版日期:2017-09-30 发布日期:2017-09-30
  • 作者简介:杨晓元,教授,博导,研究方向:信息安全、密码学,E-mail:xyyangwj@126.com
  • 基金资助:

    国家自然科学基金(No.61272492,No.61572521)资助

Low Overhead Broadcast Encryption with Personalized Message Based on Multilinear Maps

LÜ Li-qun, YANG Xiao-yuan, WANG Jing-jing, CHENG Lu   

  1. Department of Electronic Technology, Engineering College of CAPF, Xi'an 710086, China
  • Received:2016-10-02 Revised:2016-12-05 Online:2017-09-30 Published:2017-09-30

摘要:

针对目前带个人信息的广播加密(broadcast encryption with personalized message,BEPM)方案参数过大的问题,综合利用广播加密与密钥封装方法及多线性映射的特性,构造了一种低开销的BEPM方案,其密文长度与用户的私钥长度均为常数,公钥长度仅为O(lb N).该方案具有完全抗合谋攻击的特性与标准模型下的选择明文安全性,且加解密效率高,可应用于付费电视等诸多领域.

关键词: 广播加密, 低开销, 多线性映射

Abstract:

Current schemes of broadcast encryption with personalized message (BEPM) require exceedingly large parameters. To deal with the problem, a low-overhead BEPM scheme is constructed by comprehensively using broadcast encryption, key encapsulation, and characteristics of multilinear maps. The ciphertext and private key size of each user are constant, and the public key size is only in the order of O(lb N). The proposed scheme is also fully collusion resistant and can achieve chosen plaintext completely in the standard model. The scheme is safe and effective, and widely applicable in many felds such as pay TV.

Key words: broadcast encryption, multilinear map, low-overhead

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