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:
Sep. 20, 2011
Filed:
Dec. 09, 2005
Rishi R. Kacker, San Francisco, CA (US);
Guido Appenzeller, Menlo Park, CA (US);
Matthew J. Pauker, San Francisco, CA (US);
Terence Spies, San Mateo, CA (US);
Rishi R. Kacker, San Francisco, CA (US);
Guido Appenzeller, Menlo Park, CA (US);
Matthew J. Pauker, San Francisco, CA (US);
Terence Spies, San Mateo, CA (US);
Voltage Security, Inc., Cupertino, CA (US);
Abstract
A system is provided that allows encrypted content to be distributed to users over a communications network. A policy enforcement service may use an identity-based encryption algorithm to generate public parameter information and private keys. Data content may be encrypted prior to distribution using an identity-based encryption engine. The encryption engine may use the public parameter information from the policy service and public key information to encrypt the data. The public key information may be based on policy information that specifies which types of users are allowed to access the data that is encrypted using that public key. A user may obtain a private key for unlocking particular encrypted data by providing a key request to the policy enforcement service that contains the public key. The policy enforcement service may enforce the policies given by the policy information and may provide private keys only to authorized users.