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:
Jan. 08, 2013
Filed:
Mar. 26, 2010
Wei-jhy Chern, Irvine, CA (US);
Wei-Jhy Chern, Irvine, CA (US);
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An authentication server generates a security token to be used by a client for accessing multiple service providers by obtaining a secret key for each specified service provider, generating a saltbase, generating a salt for each service providers using the saltbase, the secret key, and a hashing algorithm, generating a session key that includes the salt, assigning an order to each of the generated salts, and arranging the salts based on the orders, generating a presalt for each provider using the salt for each previous provider, generating a postsalt for each of the specified service providers using the salt for each following provider, generating a blob for each of the specified service providers using the saltbase, the respective presalt, and the respective postsalt, inserting the generated blobs for the specified service providers in the security token, and providing the generated security token to the client workstation.