上海交通大学学报(自然版)

• 自动化技术、计算机技术 • 上一篇    下一篇

一个高效安全的身份基加密方案

马融,曹珍富   

  1. (上海交通大学 计算机科学与工程系, 上海 200240)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-03-30 发布日期:2010-03-30

An Efficient and Full Secure IdentityBased Encryption Scheme

MA Rong,CAO Zhenfu   

  1. (Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-03-30 Published:2010-03-30

摘要: 针对身份基加密方案效率和安全性不高的问题,利用 “双胞胎”技术,提出了一个加密时只需使用一次配对的新方案.研究结果表明,该方案可以在随机预言模型下紧规约到标准难题,是具有适应性选择密文安全的身份基加密方案.

关键词: 身份基加密, 紧规约, 选择密文安全, 随机预言模型

Abstract: This paper presented an efficient and secure identitybased encryption scheme. Compared to the previous scheme, it has the advantage of security or efficiency. This new scheme can achieve adaptive CCA2security under BDH assumption with tight reduction. The construction was made by use of the “Twin DiffieHellman” technique proposed by Cash et al, only requiring one pairing computation during the encryption procedure.

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