Since Android 5.0, Google has the full system encryption enabled on the new Nexus devices, a feature that some time is in Android. Google really wanted that all manufacturers would follow suit but that has not happened, the reason is simple, there is no hardware system encryption, even in Android 5.1.
It’s a bit an weird the story to be, but the code that is needed to make use of hardware-based encryption and decryption within Android is already since November. Google refuses to take it only in the official Android version. Both Android 5.0 and Android 5.1 was missing the function, the function is activated several times by developers Qualcomm, but Google employees have opted for no apparent reason for the function then off again.
Without this feature, however, there will be no manufacturer proceed to fully encrypt a full Android device. Without this feature, the processor must do everything namely versleutelwerk and that takes a lot of processing power making the Android device is a lot slower. By making use of a special instruction that, in any case in the Snapdragon 805 and 810 seem, this process can be made much faster. Before that Android must however use a function that calls this instruction and that is becoming increasingly disabled by Google. The reason is unclear, perhaps the function does not work well enough, or there is a licensing and patent issue.
What in any case clear is that encrypting your entire Android device performance reasons has not yet been recommended. For security reasons, obviously a smart move. It is still to wait until the function will be turned on and that there might be a manufacturer who independently choose to activate the function.
Hopefully Google will soon release a comment about this feature because of security of Android devices is to encrypt a good thing.
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