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计算机工程 ›› 2010, Vol. 36 ›› Issue (1): 149-150,. doi: 10.3969/j.issn.1000-3428.2010.01.052

• 安全技术 • 上一篇    下一篇

一种改进的概率加密体制

郑 晖,徐赐文   

  1. (中央民族大学理学院,北京 100081)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-01-05 发布日期:2010-01-05

Improved Probabilistic Encryption Scheme

ZHENG Hui, XU Ci-wen   

  1. (College of Science, Central University for Nationalities, Beijing 100081)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-01-05 Published:2010-01-05

摘要: 在不降低安全性的情况下,对一种公钥概率加密体制中的一个单向陷门置换进行改进,证明其体制安全性,并改进该单向陷门置换在数字签名中的应用,对其安全性和效率进行了分析。结果表明,改进后的概率加密体制中的加、解密效率有了明显提高。

关键词: 单向陷门置换, RSA[n,n]问题, 适应性选择消息攻击

Abstract: Without lowering the security, this paper improves an one-way trapdoor permutation in a public-key encryption scheme, and proves the security of the new scheme. It improves a digital signature which is the application of this one-way trapdoor permutation, and analyses its security and efficiency. Result shows that the efficiency of encryption and decryption of the new scheme is markedly improved.

Key words: one-way trapdoor permutation, RSA[n,n] problem, adaptive chosen message attack

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