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Patch for AES256 encryption

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This commit is contained in:
Tad 2018-01-01 14:49:15 -05:00
parent d6148bb4df
commit a350cd92f1
3 changed files with 67 additions and 12 deletions
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50
Patches/LineageOS-14.1/android_system_vold/0001-AES256.patch Normal file
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@ -0,0 +1,50 @@
From af22f14223092a5403bc33608260f355b57284f3 Mon Sep 17 00:00:00 2001
From: Tad <tad@spotco.us>
Date: Mon, 1 Jan 2018 09:50:29 -0500
Subject: [PATCH] Build time variable for AES-256 encryption
Change-Id: Id08b5a18c5b4d4ec1f3f67a8e5eab93f5b967060
---
cryptfs.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/cryptfs.c b/cryptfs.c
index b25510f..86ffac3 100644
--- a/cryptfs.c
+++ b/cryptfs.c
@@ -76,9 +76,17 @@
#define DM_CRYPT_BUF_SIZE 4096
+#ifdef CONFIG_STRONG_ENCRYPTION
+#define HASH_COUNT 6000
+#define KEY_LEN_BYTES 32
+#define IV_LEN_BYTES 32
+#define RSA_KEY_SIZE 4096
+#else
#define HASH_COUNT 2000
#define KEY_LEN_BYTES 16
#define IV_LEN_BYTES 16
+#define RSA_KEY_SIZE 2048
+#endif
#define KEY_IN_FOOTER "footer"
@@ -94,13 +102,12 @@
#define TABLE_LOAD_RETRIES 10
-#define RSA_KEY_SIZE 2048
#define RSA_KEY_SIZE_BYTES (RSA_KEY_SIZE / 8)
#define RSA_EXPONENT 0x10001
#define KEYMASTER_CRYPTFS_RATE_LIMIT 1 // Maximum one try per second
#define RETRY_MOUNT_ATTEMPTS 20
-#define RETRY_MOUNT_DELAY_SECONDS 1
+#define RETRY_MOUNT_DELAY_SECONDS 3
char *me = "cryptfs";
--
2.15.1

12
Scripts/LineageOS-14.1/Functions.sh
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@ -65,7 +65,7 @@ enableZram() {
}
export -f enableZram;
enabledForcedEncryption() {
enableForcedEncryption() {
cd $base$1;
if [[ $1 != *"mako"* ]]; then #Forced encryption seems to prevent some devices from booting
sed -i 's|encryptable=/|forceencrypt=/|' fstab.* root/fstab.* rootdir/fstab.* rootdir/etc/fstab.* &>/dev/null || true;
@ -73,7 +73,15 @@ enabledForcedEncryption() {
fi;
cd $base;
}
export -f enabledForcedEncryption;
export -f enableForcedEncryption;
enableStrongEncryption() {
cd $base$1;
echo "CONFIG_STRONG_ENCRYPTION := true" >> BoardConfig.mk;
echo "Enabled AES-256 encryption for $1";
cd $base;
}
export -f enableStrongEncryption;
hardenDefconfig() {
cd $base$1;

17
Scripts/LineageOS-14.1/Patch.sh
View File

@ -141,7 +141,7 @@ enter "packages/apps/PackageInstaller"
patch -p1 < $patches"android_packages_apps_PackageInstaller/64d8b44.diff" #Fix an issue with Permission Review
enter "packages/apps/Settings"
sed -i 's/private int mPasswordMaxLength = 16;/private int mPasswordMaxLength = 32;/' src/com/android/settings/ChooseLockPassword.java; #Increase max password length
sed -i 's/private int mPasswordMaxLength = 16;/private int mPasswordMaxLength = 48;/' src/com/android/settings/ChooseLockPassword.java; #Increase max password length
sed -i 's/GSETTINGS_PROVIDER = "com.google.settings";/GSETTINGS_PROVIDER = "com.google.oQuae4av";/' src/com/android/settings/PrivacySettings.java; #MicroG doesn't support Backup, hide the options
patch -p1 < $patches"android_packages_apps_Settings/0001-Privacy_Guard-More_Perms.patch" #Allow more control over various permissions via Privacy Guard
@ -174,12 +174,7 @@ cat /tmp/ar/hosts >> rootdir/etc/hosts #Merge in our HOSTS file
patch -p1 < $patches"android_system_core/0001-Harden_Mounts.patch" #Harden mounts with nodev/noexec/nosuid. Disclaimer: From CopperheadOS 13.0
enter "system/vold"
#XXX: THESE VALUES MUST *NOT* EVER BE CHANGED AFTER RELEASE!
#sed -i 's|define HASH_COUNT 2000|define HASH_COUNT 6000|' cryptfs.c; #Increase pbkdf iterations
#sed -i 's|define KEY_LEN_BYTES 16|define KEY_LEN_BYTES 32|' cryptfs.c; #128-bit -> 256-bit
#sed -i 's|define IV_LEN_BYTES 16|define IV_LEN_BYTES 32|' cryptfs.c;
#sed -i 's|define RSA_KEY_SIZE 2048|define RSA_KEY_SIZE 4096|' cryptfs.c; #Increase signning key size to 4096
sed -i 's|define RETRY_MOUNT_DELAY_SECONDS 1|define RETRY_MOUNT_DELAY_SECONDS 3|' cryptfs.c;
patch -p1 < $patches"android_system_vold/0001-AES256.patch" #Add a variable for enabling AES-256 bit encryption
enter "vendor/cm"
rm -rf overlay/common/vendor/cmsdk/packages #Remove analytics
@ -219,7 +214,7 @@ patch -p1 < $patches"android_kernel_oneplus_msm8974/0001-OverUnderClock-EXTREME.
enter "kernel/lge/g3"
#sed -i 's/39 01 00 00 00 00 04 F2 01 00 40/39 01 00 00 00 00 04 F2 01 00 00/' arch/arm/boot/dts/msm8974pro-lge-common/msm8974pro-lge-panel.dtsi; #Oversharpening fix, Credit: @Skin1980
patch -p1 < $patches"android_kernel_lge_g3/Overclock-1.patch" #2.45Ghz -> 2.76Ghz =+1.24Ghz XXX: Untested!
patch -p1 < $patches"android_kernel_lge_g3/Overclock-1.patch" #2.45Ghz -> 2.76Ghz =+1.24Ghz
patch -p1 < $patches"android_kernel_lge_g3/Overclock-2.patch"
patch -p1 < $patches"android_kernel_lge_g3/Overclock-3.patch"
patch -p1 < $patches"android_kernel_lge_g3/Overclock-4.patch"
@ -240,10 +235,12 @@ patch -p1 < $patches"android_kernel_motorola_msm8916/0001-Overclock.patch" #1.36
#Make changes to all devices
cd $base
find "device" -maxdepth 2 -mindepth 2 -type d -exec bash -c 'enhanceLocation "$0"' {} \;
find "device" -maxdepth 2 -mindepth 2 -type d -exec bash -c 'enabledForcedEncryption "$0"' {} \;
find "device" -maxdepth 2 -mindepth 2 -type d -exec bash -c 'enableForcedEncryption "$0"' {} \;
#find "device" -maxdepth 2 -mindepth 2 -type d -exec bash -c 'enableStrongEncryption "$0"' {} \;
find "kernel" -maxdepth 2 -mindepth 2 -type d -exec bash -c 'hardenDefconfig "$0"' {} \;
cd $base
sed -i "s/CONFIG_DEBUG_RODATA=y/# CONFIG_DEBUG_RODATA is not set/" kernel/google/msm/arch/arm/configs/lineageos_flo_defconfig; #Breaks compile
enableStrongEncryption device/lge/mako #Enable experimental strong encryption for mako for testing
sed -i "s/CONFIG_DEBUG_RODATA=y/# CONFIG_DEBUG_RODATA is not set/" kernel/google/msm/arch/arm/configs/lineageos_flo_defconfig; #Breaks on compile
#
#END OF DEVICE CHANGES
#