%0 Journal Article %T PKI and Its Applications in E-Commerce in China %A Qing-hai BAI %J Advances in Natural Science %D 2010 %I %R 10.3968/916 %X PKI system supports user authentication, message transmission, data integrity, message storage confidentiality, and the non-repudiation of operation. PKI can completely address e-commerce security requirements and PKI technology has been applied successfully in e-commerce as well. This article studies the system compositions of e-commerce, briefly analyzes e-commerce¡¯s applications in various countries, and highlights PKI and its applications in e-commerce in China. Keywords: Public Key Infrastructure; E-commerce; application %K Public Key Infrastructure %K E-commerce %K application %U http://cscanada.net/index.php/ans/article/view/916