Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2005, Vol. 28 ›› Issue (3): 100-102.doi: 10.13190/jbupt.200503.100.022

• Papers • Previous Articles     Next Articles

A Two Way User Authentication Scheme Based on ElGamal Digital Signature

QIU Huimin1,YANG Yixian1,HU Zhengming1,Zhou Xizeng2   

  1. 1 Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2 Yuanze University of Taiwan, Taiwan 000320, China
  • Online:2005-06-28 Published:2005-06-28

Abstract:

Based on ElGamal digital signature and zero knowledge, a practical two way user authentication scheme was presented. It was obtained that reliability and availability of request information could be improved through random number and online challenge response interactive system. Meantime, the problem about key distribution and storage related to user authentication scheme was solved securely and effectively by using smart card, and highly security of user information was acquired accordingly as well. As a conclusion, the securities of the proposed scheme under the assumption about the difficulty of computing discrete logarithm are analyzed.

Key words: user authentication, discrete logarithm, digital signature

CLC Number: