随着Internet的发展,电子商务已经逐渐成为人们进行商务活动的新模式。越来越多的人通过Internet进行商务活动。据IDC报告,1995年,全球电子商务交易额为2.5亿美元,而1996年这一数额则猛增至7～10亿美元,预计到2000年,电子商务的交易额将达到4500～6000亿美元。 电子商务的发展前景十分诱人,而其安全问题也变得越来越突出,如何建立一个安全、便捷的电子商务应用环境,对信息提供足够的保护,已经成为商家和用户都十分关心的话题。 人们通常所说的信息安全就是对数据的可靠性、完整性和可用性进行保护。当许多传统的商务方式应用在Internet上时,便会带来许多源于安全方面的问题,如传统的贷款和借款卡支付/保证方案及数据保护方法、电子数据交换系统、对日常信息安全的管理等。电子商务的大规模使用虽然只有几年时间,但不少公司都已经推出了相应的软、硬件产品。由于电子商务的形式 With the development of the Internet, e-commerce has gradually become a new mode of business for people. More and more people are doing business over the Internet. According to the IDC report, in 1995, the global e-commerce transaction volume was 250 million U.S. dollars, while in 1996 it surged to 7-10 billion U.S. dollars. By 2000, the transaction volume of e-commerce will reach 4500-600 billion U.S. dollars . The development prospect of e-commerce is very attractive, and its security issues are becoming more and more prominent. How to establish a safe and convenient e-commerce application environment and provide sufficient protection for information has become a topic that businesses and users are all concerned about . What people usually call information security is to protect the reliability, integrity and availability of data. When many traditional business methods are used on the Internet, many security-related issues arise, such as traditional loan and debit card payment / guarantee schemes and data protection methods, electronic data interchange systems, Management and so on. Although only a few years of large-scale use of e-commerce, but many companies have already introduced the corresponding hardware and software products. Due to the form of e-commerce