The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2009
Filed:
May. 15, 2002
Wei-quiang Michael Guo, Bellevue, WA (US);
John Hal Howard, Sammamish, WA (US);
Kok Wai Chan, Bellevue, WA (US);
Wei-Quiang Michael Guo, Bellevue, WA (US);
John Hal Howard, Sammamish, WA (US);
Kok Wai Chan, Bellevue, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A security protocol for use in a multi-site authentication system. After authenticating a user, an authentication server generates a ticket including information associated with the user. The authentication server encrypts content of the ticket using a symmetric key shared with an affiliate server. The affiliate server has a public key that the authentication server uses to encrypt the shared key. The authentication server has private key for creating a signature on the ticket. The affiliate server decrypts the shared key with its private key and then decrypts the content of the ticket using the decrypted shared key. The affiliate server validates the signature with the authentication server's public key.