欢迎访问中国科学院大学学报,今天是

中国科学院大学学报 ›› 2013, Vol. 30 ›› Issue (2): 264-271.DOI: 10.7523/j.issn.1002-1175.2013.02.019

• 计算机科学 • 上一篇    下一篇

统计绑定的非交互的非延展承诺

黄桂芳, 胡磊   

  1. 中国科学院信息工程研究所信息安全国家重点实验室, 北京 100195
  • 收稿日期:2011-11-15 修回日期:2012-04-18 发布日期:2013-03-15
  • 通讯作者: HUANG Gui-Fang
  • 基金资助:

    Supported by National Key Basic Research Program of China (2013CB834203), NSFC(61070172, 61003276, and 10990011), and the Strategic Priority Research Program of Chinese Academy of Sciences(XDA06010702 Corresponding author, E-mail:

Statistically binding non-interactive non-mallebale commitment

HUANG Gui-Fang, HU Lei   

  1. State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100195, China
  • Received:2011-11-15 Revised:2012-04-18 Published:2013-03-15
  • Supported by:

    Supported by National Key Basic Research Program of China (2013CB834203), NSFC(61070172, 61003276, and 10990011), and the Strategic Priority Research Program of Chinese Academy of Sciences(XDA06010702 Corresponding author, E-mail:

摘要:

在STOC2003上,提出了一个公共参考串模型(CRS)下的非交互的可重用的统计绑定的非延展承诺方案。该方案的CRS由4部分构成:承诺的公钥、签名方案的公钥、广义单向哈希函数和一个对串0的承诺。我们使用2个签名方案构造了一个此类方案,方案中CRS只有2部分:模糊承诺的公开参数和签名方案的公钥。因此,新方案的CRS更短些。

关键词: 承诺, 非延展性质, ∑-协议, 签名

Abstract:

In STOC 2003, based on the existence of one-way function, a non-interactive and reusable statistically binding non-malleable commitment in the common reference string (CRS) model was proposed. There the CRS contains four parts: a public key to a commitment, a public key to a signature scheme, a universal one-way hash function, and a commitment to string 0. In this paper, we use two signature schemes to construct such a scheme. Here the CRS has only two parts: a public parameter of an equivocable commitment and a public key to a signature scheme. Therefore, the new scheme has a much shorter CRS.

Key words: commitment, non-malleability with respect to decommitment, ∑-protocol, signature

中图分类号: