Apple Inc.

Kelly B Yancey

Pierre-Olivier J Martel

Richard L Hagy

Eric Brandon Tamura

Andrew S Terry

Jacques Anthony Vidrine

Timothy P Hannon

Alastair Kenneth Fettes

Dominic Benjamin Giampaolo

James Michael Magee

Paul William Chinn

Russell Alexader Blaine

Simon P Cooper

Kevin James Van Vechten

Daniel Andreas Steffen

Eric Olaf Carlson

David P Remahl

Jainam Ashokkumar Shah

Vishal Patel

Richard J Cooper

Jonathan A Zdziarski

Some embodiments provide a method for a device having multiple users. The method identifies a process installed on the device that requires an isolated storage in a file system of the device. For each of a set of the users of the electronic device, the method assigns at least one container for use by the process within a user-specific section of the file system. The containers assigned to the process in a section of the file system specific to a particular user are only accessible by the process when the particular user is logged into the device. The method assigns at least one container for use by the process within a non-user-specific section of the file system. The containers assigned to the process within the non-user-specific section of the file system are accessible by the process irrespective of which user is logged into the device.

Multi-user device

Embodiments described herein provide techniques to limit programmatic access to privacy related user data and system resources for applications that execute outside of a sandbox or other restricted operating environment while enabling a user to grant additional access to those applications via prompts presented to the user via a graphical interface. In a further embodiment, techniques are applied to limit the frequency in which a user is prompted by learning the types of files or resources to which a user is likely to permit or deny access.

Dynamic sandboxing of user data

Containers shared by multiple users of a device

Representative embodiments set forth herein disclose techniques for modifying encryption classes of files. According to some embodiments, a technique can include receiving a request to update an encryption configuration of a file from a current encryption class to an updated encryption class. In response, the technique involves obtaining (i) a first class key associated with the current encryption class, and (ii) a second class key associated with the updated encryption class. Next, the technique involves identifying file extents of the file, where each file extent is encrypted by a respective extent key that is encrypted by the first class key. Finally, the technique involves, for each file extent of the file: (i) decrypting the respective extent key using the first class key to produce a decrypted respective extent key, and (ii) encrypting the decrypted respective extent key using the second class key to produce an updated respective extent key.

Support for changing encryption classes of files

A method and apparatus of a device for security management by sandboxing third-party components is described. The device can determine whether a third-party component supports network access. If the third-party component supports network access, the device can request a user input regarding whether to restrict the network access of the component. The device can receive a user input to restrict network access of the third-party component. Upon receiving the user input to restrict network access, the device can construct a sandbox for the third-party component to restrict network access of the component and prevent the component from performing data exfiltration. Other embodiments are also described and claimed.

Sandboxing third party components

This application sets forth a key rolling technique for a file system of a computing device. The key rolling technique allows for files to be transparently re-encrypted in a background process while still allowing applications to access the files being re-encrypted. During re-encryption, at least one file extent of a file is decrypted using a current key for the file extent and re-encrypted using a new key for the file extent. Moreover, the file extent can be relocated to another location in memory during re-encryption to enhance accessibility and crash protection features. Metadata associated with the file can be updated to include information pertaining to both the location of the re-encrypted file extent as well as the new key that can be used to decrypt the re-encrypted file extent. In this manner, the metadata can be used to properly construct a complete file when the file needs to be accessed.

File system support for rolling keys on file extents

A method and an apparatus to dynamically distribute privileges among a plurality of processes are described. Each process may have attributes including a privilege to control access to processing resources. A first process may be running with a first privilege prohibited from access to a processing resource. A second process may be running with a second privilege allowed to access the processing resource. The first process may receive a request from the second process to perform a data processing task for the second process. In response, the second privilege may be dynamically transferred to the first process to allow the first process to access the processing resource. The first process may perform operations for the data processing task with the second privilege transferred from the second process.

Method and apparatus for inter process privilige transfer

The disclosed technology addresses the need in the art for assigning multiple containers to a single application. A container can be a specified area of a file system that an assigned application can access to store data, while other applications are restricted access to the container. In some instances, it may be beneficial for multiple applications to share some data, while still maintaining other data in a secure location, thus an application can be assigned to multiple containers, a personal container that can only be accessed by the application, and a shared container that can be accessed by multiple applications. Further, an application can be assigned an alternate container, in addition to the personal container. The alternate container can be used when an alternate user is using the client device, thus restricting the alternate user from accessing any sensitive data stored in the personal container.

Multiple containers assigned to an application

In response to a request for launching an application within an operating system of a data processing system, one or more extended entitlements are extracted from the application, where the one or more extended entitlements specify one or more resources the application is entitled to access. One or more security profile extensions corresponding to the one or more extended entitlements are dynamically generated. A security profile specifically for the application is created based on the one or more security profile extensions and a base security profile that has been previously compiled, where the base security profile specifies a list of a plurality of base resources. The application is then launched in a sandboxed operating environment that is configured based on the security profile specifically generated for the application.

Growing community of inventors

Mountain View, CA, United States of America

Kelly B Yancey