Research note: Key authentication scheme for cryptosystems based on discrete logarithms

Authors:
Gwoboa Horng;C. S. Yang
Affiliations:
Institute of Computer Science, National Chung-Hsing University, 250 Kuo-Kuang Road, Taichung 40227, Taiwan, ROC;Institute of Computer Science, National Chung-Hsing University, 250 Kuo-Kuang Road, Taichung 40227, Taiwan, ROC
Venue:
Computer Communications
Year:
1996

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Abstract

Protecting public keys against intruders is very important in public key cryptosystems. Most key authentication schemes require one or more authorities to authenticate keys. In this paper, we propose a new scheme for cryptosystems based on discrete logarithms. It is similar to the conventional certificate-based schemes, yet it requires no authorities. The certificate of the public key of a user is a combination of his password and private key. Our scheme is highly secure and the authentication process is very simple.