security
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中文(简体) This library allows you to OpenID-enable your Java webapp. The following specifications are supported: OpenID starts with the concept that anyone can identify themselves on the Internet the same way websites do - with a URI. Since URIs are at the very core of Web architecture, they provide a solid foundation for user-centric identity. The first piece of the OpenID framework is authentication -- how you prove ownership of a URI.
openid4java - Google Code