为了提高Internet的安全性,越来越 多的安全协议得到应用。目前国际上流 行的电子商务所采用的协议主要包括: 基于信用卡交易的安全电子交易协议 (Secure Electronic Transaction.即SET协议)、用于接入控制的SSL协议(SecureSocket Layer安全套接字层)、安全HTTP(S—HTTP)协议、安全电于邮件协议(如 PEM、S/MIM等)、用于公对公交易的 Internet EDI等。此外,也可以在Internet网上建设虚拟专网VPN,利用VPN为企 In order to improve the security of Internet, more and more security protocols are applied. At present, the protocols adopted by the most popular e-commerce in the world include: Secure Electronic Transaction (SET) protocol based on credit card transactions, SSL protocol for access control (SecureSocket Layer) Secure HTTP (S-HTTP) protocol, secure e-mail protocols such as PEM, S / MIM, etc., Internet EDI for public to public transactions. In addition, you can also build a virtual private network VPN on the Internet, using VPN as a business