计算机工程

• 安全技术 • 上一篇    下一篇

基于离散对数的多消息多接收者混合签密方案

王彩芬,姜红,杨小东,张玉磊,牛淑芬   

  1. (西北师范大学计算机科学与工程学院,兰州 730070)
  • 收稿日期:2015-02-10 出版日期:2016-01-15 发布日期:2016-01-15
  • 作者简介:王彩芬(1963-),女,教授、博士生导师,主研方向为密码学、信息安全;姜红,硕士研究生;杨小东、张玉磊,副教授、博士;牛淑芬,博士。
  • 基金项目:
    国家自然科学基金资助项目(61163038,61262057);甘肃省自然科学基金资助项目(1308RJYA039);甘肃省高等学校科研基金资助项目(2013A-014);兰州市科技计划基金资助项目(2013-4-22);西北师范大学青年教师科研能力提升计划基金资助项目(NWNU-LKQN-12-32,NWNU-LKQN-13-12)。

Multi-message and Multi-receiver Hybrid Signcryption Scheme Based on Discrete Logarithm

WANG Caifen,JIANG Hong,YANG Xiaodong,ZHANG Yulei,NIU Shufen   

  1. (College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070,China)
  • Received:2015-02-10 Online:2016-01-15 Published:2016-01-15

摘要: 针对现有多接收者签密方案不能同时广播多条消息以及解密不公平等问题,基于离散对数问题,提出一种多消息和多接收者的混合签密方案。该方案允许发送方对发送给n名接收者的n条不同消息进行签密,每名接收者通过私钥只能正确解签密得到自己的消息。在随机预言模 型下给出新方案的消息保密性和不可伪造性证明,结果表明,新方案不仅比其他签密方案更加高效,而且具有较低的计算量和通信开销,能够保证通信过程的安全性、可靠性和公平性。

关键词: 混合签密, 离散对数, 多消息, 多接收者, 安全性

Abstract: Existing multi-receiver signcryption schemes exist some security problems.For example,multi-message can not be broadcast simultaneously and the receivers do not have fairness in decryption.In order to avoid those problems,this paper proposes a multi-message and multi-receiver hybrid signcryption scheme based on Discrete Logarithm(DL).In this scheme,a sender can simultaneously signcrypt n messages for n receivers,and a receiver only can correct unsigncrypt the ciphertext to get his message with his own private key.Meanwhile,the proposed scheme of confidentiality and unforgeability is proved in the random oracle model.The results show that the new scheme not only is more efficient than other signcryption schemes,but also has a lower computation and communication overhead,and it can guarantee the communication security,reliability and fairness.

Key words: hybrid signcryption, Discrete Logarithm(DL), multi-message, multi-receiver, security

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