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:
Oct. 01, 2013
Filed:
Aug. 29, 2008
Ahmed Mohamed, Sammamish, WA (US);
Ahmed Mohamed, Sammamish, WA (US);
Blackout, Inc., Sammamish, WA (US);
Abstract
Windows Rights Management Services (RMS) are leveraged to provide protection and sharing of encryption keys to file systems. An encrypting file system (EFS) delegates key sharing, management and recovery to the RMS system. User rights to file encryption keys (FEKs) are derived from files' security descriptor information or as explicitly specified by users. Whenever an encrypted file is created, its FEK is protected using RMS, as a byte stream stored in file encryption metadata information. When a user with access tries to access an encrypted file without having a private key to decrypt the FEK, the EFS transparently extracts the RMS protected byte stream from the file encryption metadata information and uses RMS to access the FEK stored in the bytes stream using the user security context. The FEK is protected with the user master key, encryption certificate or password and cached for the next user file access.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile