首页> 外文期刊>Designs, Codes and Crytography >Cryptanalysis of elliptic curve hidden number problem from PKC 2017
【24h】

Cryptanalysis of elliptic curve hidden number problem from PKC 2017

机译:PKC 2017的椭圆曲线隐藏数问题的密码分析

获取原文
获取原文并翻译 | 示例
           

摘要

In PKC 2017, the elliptic curve hidden number problem (EC-HNP) was revisited in order to rigorously assess the bit security of the elliptic curve Diffie-Hellman key exchange protocol. In this paper, we solve EC-HNP by using the Coppersmith technique which combines the idea behind the second lattice method of Boneh, Halevi and Howgrave-Graham for solving the modular inversion hidden number problem. We show that the hidden point in EC-HNP can be recovered asymptotically if about half of the most significant bits of the x-coordinates of the corresponding points are given. A similar result is also obtained for the least significant bits. We provide better bounds than the one in the work of PKC 2017, which needs about 5/6 of the bits as a result of a rigorous algorithm. However, our solution is based on a heuristic assumption. We verify the validity of our heuristic algorithm by computer experiments.
机译:在PKC 2017中,重新审视了椭圆曲线隐藏数问题(EC-HNP),以便严格评估椭圆曲线Diffie-Hellman密钥交换协议的位安全性。在本文中,我们使用Coppersmith技术解决了EC-HNP问题,该技术结合了Boneh,Halevi和Howgrave-Graham的第二格方法背后的思想,以解决模块化反演隐藏数问题。我们表明,如果给出了对应点x坐标的最高有效位的大约一半,则可以渐近地恢复EC-HNP中的隐藏点。对于最低有效位也获得了相似的结果。我们提供了比PKC 2017更好的边界,由于严格的算法,它需要大约5/6的位。但是,我们的解决方案基于启发式假设。我们通过计算机实验验证了我们的启发式算法的有效性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号