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基于多线性映射的低开销BEPM方案

Low Overhead Broadcast Encryption with Personalized Message Based on Multilinear Maps
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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. Current schemes of broadcast encryption with personalized message （BEPV） 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 fields such as pay TV.
作者 吕立群 杨晓元 汪晶晶 程璐 LU Li-qun YANG Xiao-yuan WANG Jing-jing CHENG Lu(Department of Electronic Technology, Engineering College of CAPF, Xi＇an 710086, China)
机构地区 武警工程大学电子技术系
出处 《应用科学学报》 CSCD 北大核心 2017年第5期626-633,共8页 Journal of Applied Sciences
基金 国家自然科学基金(No.61272492 No.61572521)资助
关键词 广播加密 低开销 多线性映射 broadcast encryption, low-overhead, multilinear map
分类号 TP309 [自动化与计算机技术—计算机系统结构]
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应用科学学报
2017年 第5期

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