Abstract
In the public key cryptosystems, for obtaining the public key, one can either directly request it from the recipient or retrieve it from the public key directory. In 1999, Zhan et al. proposed an improvement to Horng-Yang's key authentication scheme based on discrete logarithms that has the same stability as Horng-Yang's scheme, but with a more secure. The current paper, however, demonstrates that the scheme is vulnerable to public key substitution attack and theft attack, and then presents an improvement of the scheme.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
