计算机应用 ›› 2010, Vol. 30 ›› Issue (1): 196-197.

• 信息安全 • 上一篇    下一篇

椭圆曲线数字签名中阈下信道通信研究

张秋余1,孙战辉2   

  1. 1. 兰州理工大学
    2. 兰州理工大学计算机与通信学院
  • 收稿日期:2009-07-08 修回日期:2009-09-03 发布日期:2010-01-01 出版日期:2010-01-01
  • 通讯作者: 孙战辉
  • 基金资助:
    甘肃省自然科学基金资助项目

Covert communication based on subliminal channel in elliptic curve digital signature algorithm

  • Received:2009-07-08 Revised:2009-09-03 Online:2010-01-01 Published:2010-01-01

摘要: 针对阈下信道技术在椭圆曲线数字签名中的应用可能以及存在的安全隐患问题,通过对其中存在的窄带阈下信道进行实时性测试,在平衡传输信息容量与签名时间的条件下,确定了合理的阈下信息传输位数。实验结果表明,窄带阈下信道在椭圆曲线数字签名中可以被有效利用。

关键词: 椭圆曲线密码体制, 数字签名, 信息隐藏, 窄带阈下信道, Miracl大数库

Abstract: There are narrowband and broadband subliminal channels in the Elliptic Curve Digital Signature Algorithm (ECDSA),but broadband subliminal channel cannot be safely used. Therefore, the real-time test of narrowband subliminal channel was done. The reasonable bit rate of the sent message was confirmed when the capacity and real-time requests of narrowband subliminal channel were satisfied. The result shows narrowband subliminal channel can be effectively used in ECDSA.

Key words: Elliptic Curve Cryptosystem (ECC), digital signature, information hiding, narrowband subliminal channel, Miracl large number library