Apple Inc.

Cameron W Zwarich

Joshua H Shaffer

Matthew Elliot Shepherd

Chendi Zhang

Daniel O Schimpf

Benjamin E Nielsen

Denis J Palmans

Systems and methods for performing binary translation include a system that is capable of translating binaries written for use in a source execution environment to binaries compatible with a target execution environment. Consistent with some embodiments, a binary translation system includes a system service and a runtime code module that exists in an application memory address space. The binary translation system translates object-level binaries corresponding to executables, linkers, libraries, and the like and stores the translation in a translation cache that is cryptographically secured to ensure that only a system having a specific key is able to access the translations. If the application or application binary has been modified since the translation was performed, the system service will ensure that the translation is removed from the cache, a new translation is performed, and all threads accessing that translation are updated to the new translation.

Systems and methods for performing binary translation

Disclosed herein is a technique for implementing a secure lock screen on a computing device. The secure lock screen is configured to permit particular applications to display their content&#x2014;such as main user interfaces (UIs)&#x2014;while maintaining a desired overall level of security on the computing device. Graphics contexts, which represent drawing destinations associated with the applications, are tagged with entitlement information that indicates whether or not each graphics context should be displayed on the computing device when the computing device is in a locked-mode. Specifically, an application manager tags each application that is initialized, where the tagging is based on a level of entitlement possessed by the application. In turn, a rendering server that manages the graphics contexts can identify the tagged entitlement information and display or suppress the content of the applications in accordance with their entitlements.

Methods and system for implementing a secure lock screen

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Cupertino, CA, United States of America

Cameron W Zwarich