同态加密方案及安全两点直线计算协议
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金(61272435,61373020,U1536102)


Homomorphic Encryption Scheme and A Protocol on Secure Computing a Line by Two Private Points
Author:
Affiliation:

Fund Project:

National Natural Science Foundation of China (61272435, 61373020, U1536102)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    近年来,安全多方计算一直是密码领域的一个研究热点,保密几何计算是其一个重要分支.过两私有点坐标安全地计算一条直线问题,在空间信息安全方面有重要应用前景.首先,提出一个由加密方计算(或选取)加密底数的Paillier变体同态加密方案,并证明了其在标准模型下对适应性选择明文攻击(adaptive chosen-plaintext attack,简称CPA)是安全的;然后,在半诚实模型下,基于该变体同态加密方案设计了一个能够安全计算过两私有点直线的协议.还可以将此协议推广应用到可以归约为安全计算两私有点坐标差商的所有安全多方几何计算问题,从而解决了原有的基于同态加密体制的安全两方计算协议存在的信息泄露问题.

    Abstract:

    In recent years, secure multiparty computation is one of research focuses in the field of cryptography, and secret geometry calculation is an important branch of it. The problem of safely calculating a straight line by two private coordinate point has important application prospect in space information security. First, a variant of Paillier's homomorphic encryption scheme is put forward in that the base is calculated by sender during encryption, and its indistinguishability under adaptive chosen-plaintext attack is proved. Then, based on this homomorphic encryption scheme, a protocol that can safely calculate a straight line by two private coordinate point in semi-honesty model is designed. Moreover, this protocol can be applied to solve a type of secure multiparty computational geometry problem that can be reduced to compute coordinate difference quotient. Thus, the problem that there is a non-negligible probability of private information leakage in the current coordinate difference quotient calculation protocols based on homomorphic encryption is solved.

    参考文献
    相似文献
    引证文献
引用本文

巩林明,李顺东,窦家维,郭奕旻,王道顺.同态加密方案及安全两点直线计算协议.软件学报,2017,28(12):3274-3292

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2016-05-03
  • 最后修改日期:2016-11-24
  • 录用日期:
  • 在线发布日期: 2017-03-27
  • 出版日期:
您是第位访问者
版权所有:中国科学院软件研究所 京ICP备05046678号-3
地址:北京市海淀区中关村南四街4号,邮政编码:100190
电话:010-62562563 传真:010-62562533 Email:jos@iscas.ac.cn
技术支持:北京勤云科技发展有限公司

京公网安备 11040202500063号