计算机应用 ›› 2012, Vol. 32 ›› Issue (01): 99-103.DOI: 10.3724/SP.J.1087.2012.00099

• 信息安全 • 上一篇    下一篇

基于身份的公开验证签密方案

李志敏,徐馨,李存华   

  1. 淮海工学院 计算机工程学院,江苏 连云港 222005
  • 收稿日期:2011-05-31 修回日期:2011-07-10 发布日期:2012-02-06 出版日期:2012-01-01
  • 通讯作者: 李志敏
  • 作者简介:李志敏(1981-),女,辽宁沈阳人,讲师,博士,主要研究方向:密码学、信息安全、网络安全;徐馨(1976-),女,江苏连云港人,讲师,硕士,主要研究方向:信息安全、网络安全、算法分析;李存华(1963-),男,江苏徐州人,教授,博士,主要研究方向:数据库理论与系统、数据挖掘、模式识别。
  • 基金资助:

    江苏省自然科学基金资助项目(BK20082140);淮海工学院引进人才科研启动基金资助项目(KQ10121);淮海工学院校内课题项目(KX10530)

ID-based public verifiability signcryption scheme

LI Zhi-min,XU Xin,LI Cun-hua   

  1. School of Computer Engineering, Huaihai Institute of Technology, Lianyungang Jiangsu 222005, Chian
  • Received:2011-05-31 Revised:2011-07-10 Online:2012-02-06 Published:2012-01-01
  • Contact: LI Zhi-min

摘要: 基于双线性对,提出了一个基于身份的签密方案。在计算Diffie-Hellman(CDH)问题困难的假设下,证明了方案在随机预言模型下能够抵抗自适应性选择消息和身份攻击。方案基于身份,不需要证书,从而简化了密钥管理。此外,所提方案不仅可用于公开验证,在不需要泄露接收者私钥的前提下,可由第三方认证密文确实是对应明文的有效签密值。

关键词: 签密方案, 公开验证, 可证安全, 基于身份, 随机预言模型

Abstract: Using bilinear pairing, a new identity-based signcryption scheme was proposed in this paper. Under the assumption that the Computational Diffie-Hellman (CDH) problem is hard, the newly proposed scheme had been proved to be secure against the existing unforgeability on adaptively chosen message/ciphertext and identity attack in random oracle model. The advantage of the proposed scheme is that it is identity-based which needs no certificates so that it has a simple key management. In addition, the proposed scheme can provide public verifiability, and it allows a third party to convince that the signcryption is valid for the given message without providing the receiver's private key.

Key words: signcryption scheme, public verification, provably secure, Identity-based (ID), random oracle model

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