Abstract: A method and a system for allowing computer-executable applications to efficiently and securely obtain credentials required to access data from a protected Web service utilizes an ID token. The ID token is associated with an IP address of a user's computer, and is validated before providing the credentials to the user's computer.

Abstract: A single sign-on authentication system includes an authentication component that determines whether a user is authenticated, and, if it is determined that the user is authenticated, generates a connection request, the connection request including an identifier and entitlement information. The system also includes an interface component that receives the connection request from the authentication component. The interface component compares the received identifier with an expected identifier. If they match, the interface component makes the entitlement information available to a server associated with the interface component. A method for enabling an authenticated user to connect to a server in a computer network includes receiving a connection request for an authenticated user, the connection request including an identifier and entitlement information; comparing the received identifier with an expected identifier; and, if they match, making the entitlement information available to the server.