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@article{ART001655017},
author={Youngsook Lee and 김지연 and WON, DONGHO},
title={Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation},
journal={Journal of The Korea Society of Computer and Information},
issn={1598-849X},
year={2012},
volume={17},
number={4},
pages={91-98},
doi={}

TY - JOUR
AU - Youngsook Lee
AU - 김지연
AU - WON, DONGHO
TI - Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation
JO - Journal of The Korea Society of Computer and Information
PY - 2012
VL - 17
IS - 4
PB - The Korean Society Of Computer And Information
SP - 91
EP - 98
SN - 1598-849X
AB - A group key exchange (GKE) protocol is designed to allow a group of parties communicating over a public network to establish a common secret key. As group-oriented applications gain popularity over the Internet, a number of GKE protocols have been suggested to provide those applications with a secure multicast channel. Among the many protocols is Yi et al.’s password-based GKE protocol in which each participant is assumed to hold their individual password registered with a trusted server. A fundamental requirement for password-based key exchange is security against off-line dictionary attacks. However, Yi et al.’s protocol fails to meet the requirement. In this paper, we report this security problem with Yi et al.’s protocol and show how to solve it.
KW - group key exchange;password;dictionary attack;identity-based cryptography
DO -
ER -

Youngsook Lee, 김지연 and WON, DONGHO. (2012). Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation. Journal of The Korea Society of Computer and Information, 17(4), 91-98.

Youngsook Lee, 김지연 and WON, DONGHO. 2012, "Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation", Journal of The Korea Society of Computer and Information, vol.17, no.4 pp.91-98. Available from: doi:

Youngsook Lee, 김지연, WON, DONGHO "Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation" Journal of The Korea Society of Computer and Information 17.4 pp.91-98 (2012) : 91.

Youngsook Lee, 김지연, WON, DONGHO. Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation. 2012; 17(4), 91-98. Available from: doi:

Youngsook Lee, 김지연 and WON, DONGHO. "Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation" Journal of The Korea Society of Computer and Information 17, no.4 (2012) : 91-98.doi:

Youngsook Lee; 김지연; WON, DONGHO. Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation. Journal of The Korea Society of Computer and Information, 17(4), 91-98. doi:

Youngsook Lee; 김지연; WON, DONGHO. Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation. Journal of The Korea Society of Computer and Information. 2012; 17(4) 91-98. doi:

Youngsook Lee, 김지연, WON, DONGHO. Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation. 2012; 17(4), 91-98. Available from: doi:

Youngsook Lee, 김지연 and WON, DONGHO. "Yi et al.’s Group Key Exchange Protocol : A Security Vulnerability and its Remediation" Journal of The Korea Society of Computer and Information 17, no.4 (2012) : 91-98.doi: