谈谈CAS

CAS - Central Authentication Service,single sign-on for the web.

  • Java (Spring Webflow/MVC servlet) server component
  • Pluggable authentication support (LDAP, database, X.509, 2-factor)
  • Support for multiple protocols (CAS, SAML, OAuth, OpenID)
  • Cross-platform client support (Java, .Net, PHP, Perl, Apache, etc)
  • Integrates with uPortal, Liferay, BlueSocket, Moodle, and Google Apps to name a few

CAS请求认证的时序图:
这里写图片描述
The key concepts:
TGT-Ticket Granting Ticket,stored in the CASTGC cookie,represents a SSO session for a user
ST - Service Ticket,transmitted as a GET parameter in urls,stands for the access granted by the CAS server to the cassified application for a specific user

参考资源:
1.http://jasig.github.io/cas/4.0.x/index.html

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