decrypt: AOSP 10 requires the use of fscrypt

fscrypt aosp doc: https://source.android.com/security/encryption/file-based
kernel fscrypt doc: https://www.kernel.org/doc/html/v4.18/filesystems/fscrypt.html

This commit implements the ability for TWRP to use fscrypt to decrypt
files on the fscrypt implementation. It has been implemented mostly
in a new successor library to e4crypt called libtwrpfscrypt. Most of the
code was ported from AOSP vold.

Notable updates include:
 - updated policy storage by libtar
 - lookup of fbe policies by libtwrpfscrypt
 - threaded keystore operations

Big thanks to Dees_Troy for the initial trailblazing
of encryption in TWRP.

Change-Id: I69cd2eba3693a9914e00213d4943229635d0cdae

This commit is contained in:

bigbiff

2020-06-22 12:17:22 +02:00

committed by

mauronofrio

parent f4c1553789

commit 7ba7500953

60 changed files with 8117 additions and 280 deletions

									
										gui/gui.cpp
									
		-1
	
												View File
												
				@@ -774,7 +774,6 @@ extern "C" int gui_loadResources(void)

				#ifndef TW_OEM_BUILD

					int check = 0;

					DataManager::GetValue(TW_IS_ENCRYPTED, check);

					if (check)

					{

						if (PageManager::LoadPackage("TWRP", TWRES "ui.xml", "decrypt"))