基于门限的广播加密算法改进  

Improvement of threshold-based broadcast encryption algorithm

作　　者：续蕾[1] 刘玉江[1] 

机构地区：[1]辽宁对外经贸学院信息管理系,辽宁大连116052

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第3期373-376,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(60905054)

摘　　要：为解决数字媒体上的版权问题.对广播加密方案以及能够有效剔除泄密者的泄密者追踪方案做出了深入的研究.采用基于身份的广播加密方案中加入基于门限的泄密者追踪机制的理论分析和实验方法,引入多个密码学哈希函数,并对私钥进行分组处理,实现了基于门限的广播加密及泄密者追踪方案算法的改进.研究结果表明:该算法降低了密文头的大小,压缩了公钥大小,减少了服务器开销,实现了优化叛徒追踪机制,能够推动广播加密技术在实际生活中的使用.In order to solve the problem associated with the copyright of digital media,the authors conducted an in-depth investigation on the traitor’s tracking scheme in terms of broadcast encryption.This paper presents the theory and experimental methods that the broadcast encryption scheme based on identity is added with the traitor’s tracking mechanism.In addition,lots of cryptography’s hash functions are introduced,and the private keys are packet processed.Therefore,the study improves the traitor’s based Broadcast Encryption Algorithm.The study shows that the algorithm reduces cipher text head’s size,public key’s size and the server’s cost,realizes the optimization of traitor tracing mechanism,and enables the application of the broadcast encryption technology in the actual life.

关 键 词：门限 广播加密 权威密钥 叛徒追踪 解密 算法改进 公钥 存储代价 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TP391.7[自动化与计算机技术—控制科学与工程]