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decrypt: AOSP 10 requires the use of fscrypt

Browse Source 
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
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data.cpp
+1 -7
View File
@@ -1115,13 +1115,7 @@ void DataManager::Output_Version(void)
}
}
}
if (!TWFunc::Path_Exists(recoveryCacheDir)) {
LOGINFO("Recreating %s folder.\n", recoveryCacheDir.c_str());
if (!TWFunc::Create_Dir_Recursive(recoveryCacheDir.c_str(), S_IRWXU | S_IRWXG | S_IWGRP | S_IXGRP, 0, 0)) {
LOGERR("DataManager::Output_Version -- Unable to make %s: %s\n", recoveryCacheDir.c_str(), strerror(errno));
return;
}
}
std::string verPath = recoveryCacheDir + ".version";
if (TWFunc::Path_Exists(verPath)) {
unlink(verPath.c_str());