安全是电子商务发展的根本。企业与消费者对电子交易安全性的担忧严重阻碍了电子商务的发展。信息安全固有的敏感性及特殊性对网络安全提出了更高的要求。传统的安全方式不外乎密码、个人识别码(PIN)、磁卡或钥匙,但这些方法只能提供有限的保障,而且它们经常会因为被非法盗用或滥用,而造成个人隐私、财物和网络数据的损失。另外,单独以静态和动态生理特征做为身份辨识的方法目前应用比较广泛。静态生理特征很方便使用,但容易被模仿,黑客惯用的伎俩就是在信息传输过程中截 Security is fundamental to the development of e-commerce. Worries about the security of electronic transactions by businesses and consumers have seriously hampered the development of e-commerce. The inherent sensitivity and specificity of information security put forward higher requirements on network security. The traditional way of security is nothing more than a password, personal identification number (PIN), magnetic card or key, but these methods provide only limited protection and often result in personal privacy, property and internet data because of unauthorized misappropriation or abuse Loss. In addition, the method of identity identification, which is solely based on static and dynamic physiological characteristics, is currently used widely. Static physiological characteristics are easy to use, but easily mimicked, hacker habits trick is to cut off the information transmission process