Title	A Secure E-coupon System for Mobile Users
Author	Chin-Chen Chang, Chia-Chi Wu, Iuon-Chang Lin
Citation	Vol. 6  No. 1  pp. 273~278
Keywords	e-commerce, e-coupon, mobile commerce

Title	Efficient Multi-proxy Multi-Signature Schemes Based on DLP
Author	Ya-Fen Chang, Chin-Chen Chang
Citation	Vol. 6  No. 2  pp. 152~159
Keywords	Proxy-signature, multi-signature, DLP

Title	An Efficient and Flexible Forward-Secure Signature Scheme
Author	Hui-Feng Huang, Chin-Chen Chang
Citation	Vol. 6  No. 3  pp. 211-219
Keywords	forward-secure signature, cryptography

Title	An Improved Deniable Authentication Protocol
Author	Chia-Chen Lin, Chin-Chen Chang
Citation	Vol. 6  No. 11  pp. 240-243
Keywords	Deniable authentication, mutual authentication, PIM attack.