随着互联网的发展,电子商务己经逐渐成为人们进行商务活动的新模式。同时,电子商务的安全问题也变得越来越突出。公开密钥基础设施(Public Key Infrastructure,PKI)是实现电子商务安全的关键基础技术,是解决电子商务发展中安全问题的最可行、有效的措施。对基于PKI技术的电子商务身份认证系统进行了研究,并提出了具体的实施方案。 With the development of the Internet, e-commerce has gradually become a new model for people’s business activities. At the same time, the security of e-commerce has also become more and more prominent. Public Key Infrastructure (PKI) is the key basic technology for realizing e-commerce security and is the most feasible and effective measure to solve the security problems in the development of e-commerce. Based on PKI technology e-commerce authentication system has been studied and put forward a specific implementation.