描述单点登录系统所涉及的技术及设计方案的论文，有全面的SAML的介绍，是需要做单点登录产品或使用SAML做网络传输的很好的资料-Describes the single sign-on system and technology involved in the design, a comprehensive descr iption of SAML is to do single sign-on product or use SAML to do a good information netwo