Apple Inc.

George K Colley

Eric Brandon Tamura

Mark Steven Day

Christopher N Ryan

Bradley R M Suinn

Christopher J Suter

William C Conway

This application relates to a key rolling process for a file system of a computing device. The key rolling process allows for files to be transparently re-encrypted in a background process while still allowing applications to access files being re-encrypted. During re-encryption, a portion of the file is decrypted using a current key for the file and re-encrypted using a new key for the file. During re-encryption, the portion of the file can be relocated to another location in memory. Metadata associated with the file can be updated to include information pertaining to the location of the re-encrypted portion. The metadata can also be updated include information pertaining to how much of the file has been re-encrypted with the new key and how much of the file remains encrypted with the current key.

File system support for rolling keys

When enumerating of a set of content items in a directory in a remote file server, an electronic device provides a request for information associated with the set of content items. The electronic device and the file server may use, respectively, use an OS X&#xae;-based operating system and a Windows&#xae;-based operating system. In response to the request, the file server may access information specifying the set of content items. For example, the information may include maximal access information and finder information for each content item in the set of content items in the directory. Next, the electronic device may receive a response with the requested information from the file server. The providing of the request and the receiving of the response may, respectively, involve single instances of a request and a response, thereby significantly reducing the amount of communication between the electronic device and the file server.

Remote enumeration of a directory

Growing community of inventors

Sunnyvale, CA, United States of America

George K Colley