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Android Security Internals by Nikolay Elenkov

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Chapter 3. Package Management

In this chapter, we take an in-depth look at Android package management. We begin with a description of Android’s package format and code signing implementation, and then detail the APK install process. Next, we explore Android’s support for encrypted APKs and secure application containers, which are used to implement a form of DRM for paid applications. Finally, we describe Android’s package verification mechanism and its most widely used implementation: the Google Play application verification service.

Android Application Package Format

Android applications are distributed and installed in the form of application package (APK) files, which are usually referred to as APK files. APK files are container files that include ...

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