By Nikolay Elenkov
"I in truth did not think i would research a lot from the e-book simply because i have been engaged on Android defense for a few years. This trust couldn't were extra fallacious. Android protection Internals has earned an everlasting spot on my place of work bookshelf."—Jon "jcase" Sawyer, from the Foreword
There are multiple billion Android units in use this present day, each a possible goal. regrettably, many primary Android safety features were little greater than a black field to all however the so much elite safety professionals—until now.
In Android protection Internals, most sensible Android protection professional Nikolay Elenkov takes us less than the hood of the Android protection process. Elenkov describes Android safety structure from the ground up, delving into the implementation of significant security-related elements and subsystems, like Binder IPC, permissions, cryptographic services, and machine administration.
You'll learn:
- How Android permissions are declared, used, and enforced
- How Android manages software programs and employs code signing to make sure their authenticity
- How Android implements the Java Cryptography structure (JCA) and Java safe Socket Extension (JSSE) frameworks
- About Android's credential garage method and APIs, which enable purposes shop cryptographic keys securely
- About the web account administration framework and the way Google money owed combine with Android
- About the implementation of established boot, disk encryption, lockscreen, and different equipment protection features
- How Android's bootloader and restoration OS are used to accomplish complete method updates, and the way to acquire root access
With its unparalleled point of intensity and element, Android safety Internals is a must have for any security-minded Android developer.
Read or Download Android Security Internals: An In-Depth Guide to Android's Security Architecture PDF
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Extra resources for Android Security Internals: An In-Depth Guide to Android's Security Architecture
Right here, imposing is both real or fake and is by way of an inventory of SPKI SHA-512 hashes separated through commas. notice that there's no validity interval, so pins are legitimate till deleted. The dossier is used not just through the browser, yet system-wide through advantage of pinning being built-in in libcore. In perform, which means the default (and basically) procedure X509TrustManager implementation (TrustManagerImpl) consults the pin record whilst validating certificates chains. yet there’s a twist: the traditional checkServerTrusted() technique doesn’t seek advice the pin record. therefore, any legacy libraries that don't find out about certificates pinning could proceed to operate precisely as earlier than, whatever the contents of the pin checklist. This has most likely been performed for compatibility purposes and is whatever to pay attention to: operating on Android four. 2 or above doesn’t inevitably suggest that you just get the good thing about system-level certificates pins. The pinning performance is uncovered to third-party libraries and apps through the hot X509TrustManagerExtensions SDK category. It has a unmarried technique, checkServerTrusted() (full signature proven in instance 6-11) that returns a established chain on good fortune or throws a CertificateException if validation fails. instance 6-11. X509TrustManagerExtensions certificates validation strategy List