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:
May. 01, 2012
Filed:
Apr. 07, 2008
Edward F. Reus, Woodinville, WA (US);
Mario C. Goertzel, Bellevue, WA (US);
Michael V. Sliger, Sammamish, WA (US);
Derek C. Y. Cheng, Seattle, WA (US);
Edward F. Reus, Woodinville, WA (US);
Mario C. Goertzel, Bellevue, WA (US);
Michael V. Sliger, Sammamish, WA (US);
Derek C. Y. Cheng, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Described is a technology by which encrypted content is pre-distributed to recipients during a pre-distribution timeframe, for example to distribute protected content to many clients in a controlled manner. At a release moment, a key for decrypting the encrypted content is released. For example, a software update may be pre-distributed in this manner, whereby many clients may receive the updates over time but the update cannot be analyzed for hacking purposes, e.g., to use the update to figure out a prior vulnerability. By rapidly and widely disseminating the key at the release moment, the update is installed on a large percentage of client systems before those systems can be exploited. The content may be allowed to expire before the key is released, or may be canceled or replaced. The content may include a complete file, and/or a delta file that changes another file into a resultant piece of content.