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Strong AES patch changes

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This commit is contained in:
Tad 2018-04-28 15:25:42 -04:00
parent b0ce27b860
commit 60b85e10fe
6 changed files with 65 additions and 37 deletions
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11
Misc/Features/Strong_AES.txt
View File

@ -15,7 +15,16 @@ Benchmarks (Androbench)
Seq. Write: 20 MBps
Rand. Read: 11 MBps
Rand. Write: 3 MBps
AES-128/RSA-2048 Encryption
AES-128/RSA-2048 Encryption + Overclock
Seq. Read: 73 MBps
Seq. Write: 18 MBps
Rand. Read: 13 MBps
Rand. Write: 4 MBps
AES-192/RSA-4096 Encryption + Overclock
Seq. Read: 70 MBps
Seq. Write: 18 MBps
Rand. Read: 13 MBps
Rand. Write: 4 MBps
AES-256/RSA-4096 Encryption
Seq. Read: 26 MBps
Seq. Write: 18 MBps

41
Patches/LineageOS-14.1/android_system_vold/0001-AES256.patch → Patches/LineageOS-14.1/android_system_vold/0001-StrongAES.patch
View File

@ -1,42 +1,51 @@
From 2206aff4757e0f1094861f0e9505d1b5ddbf3236 Mon Sep 17 00:00:00 2001
From 2a36c9678050564b7378a39262f8c58c8eef51ab Mon Sep 17 00:00:00 2001
From: Tad <tad@spotco.us>
Date: Wed, 3 Jan 2018 11:55:06 -0500
Subject: [PATCH] Build time variable for AES-256 encryption
Date: Sat, 28 Apr 2018 13:50:21 -0400
Subject: [PATCH] Build time variable for AES 192/256 encryption
Change-Id: Ib2d53a1d22e935ef0fa5f0f91e3bf5308d9c6459
Change-Id: Icd16a3fac203ac2e070d548a7c2ce001035addd9
---
Android.mk | 4 ++++
cryptfs.c | 11 +++++++++--
2 files changed, 13 insertions(+), 2 deletions(-)
Android.mk | 8 ++++++++
cryptfs.c | 16 ++++++++++++++--
2 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/Android.mk b/Android.mk
index e645574..7112dce 100644
index e645574..19645f0 100644
--- a/Android.mk
+++ b/Android.mk
@@ -115,6 +115,10 @@ LOCAL_C_INCLUDES += $(TARGET_CRYPTFS_HW_PATH)
@@ -115,6 +115,14 @@ LOCAL_C_INCLUDES += $(TARGET_CRYPTFS_HW_PATH)
LOCAL_CFLAGS += -DCONFIG_HW_DISK_ENCRYPTION
endif
+ifeq ($(TARGET_WANTS_STRONG_ENCRYPTION),true)
+LOCAL_CFLAGS += -DCONFIG_STRONG_ENCRYPTION
+ifeq ($(TARGET_WANTS_AES192_ENCRYPTION),true)
+LOCAL_CFLAGS += -DCONFIG_AES192_ENCRYPTION
+endif
+
+ifeq ($(TARGET_WANTS_AES256_ENCRYPTION),true)
+LOCAL_CFLAGS += -DCONFIG_AES256_ENCRYPTION
+endif
+
include $(BUILD_STATIC_LIBRARY)
include $(CLEAR_VARS)
diff --git a/cryptfs.c b/cryptfs.c
index b25510f..86ffac3 100644
index b25510f..a6dd9fa 100644
--- a/cryptfs.c
+++ b/cryptfs.c
@@ -76,9 +76,17 @@
@@ -76,9 +76,22 @@
#define DM_CRYPT_BUF_SIZE 4096
+#ifdef CONFIG_STRONG_ENCRYPTION
+#ifdef CONFIG_AES256_ENCRYPTION
+#define HASH_COUNT 6000
+#define KEY_LEN_BYTES 32
+#define IV_LEN_BYTES 32
+#define RSA_KEY_SIZE 4096
+#else ifdef CONFIG_AES192_ENCRYPTION
+#define HASH_COUNT 6000
+#define KEY_LEN_BYTES 24
+#define IV_LEN_BYTES 24
+#define RSA_KEY_SIZE 4096
+#else
#define HASH_COUNT 2000
#define KEY_LEN_BYTES 16
@ -46,7 +55,7 @@ index b25510f..86ffac3 100644
#define KEY_IN_FOOTER "footer"
@@ -94,13 +102,12 @@
@@ -94,13 +107,12 @@
#define TABLE_LOAD_RETRIES 10
@ -62,5 +71,5 @@ index b25510f..86ffac3 100644
char *me = "cryptfs";
--
2.15.1
2.17.0

41
Patches/LineageOS-15.1/android_system_vold/0001-AES256.patch → Patches/LineageOS-15.1/android_system_vold/0001-StrongAES.patch
View File

@ -1,42 +1,51 @@
From 1a5bbf0ee895bbd66fb3ce66be44b1074bb20324 Mon Sep 17 00:00:00 2001
From 2865dba2a7b981a275b183c1c47079cc88044e15 Mon Sep 17 00:00:00 2001
From: Tad <tad@spotco.us>
Date: Wed, 28 Feb 2018 08:21:28 -0500
Subject: [PATCH] Build time variable for AES-256 encryption
Date: Sat, 28 Apr 2018 13:45:42 -0400
Subject: [PATCH] Build time variable for AES 192/256 encryption
Change-Id: I25eba5939c965323e4ffa6d95c6736b671c51e09
Change-Id: I194deffbabbfb3dadd3d1af90924b99e7fd54552
---
Android.mk | 4 ++++
cryptfs.cpp | 9 ++++++++-
2 files changed, 12 insertions(+), 1 deletion(-)
Android.mk | 8 ++++++++
cryptfs.cpp | 14 +++++++++++++-
2 files changed, 21 insertions(+), 1 deletion(-)
diff --git a/Android.mk b/Android.mk
index 14bf99a..0e9f3e1 100644
index 2beae28..4f310c1 100644
--- a/Android.mk
+++ b/Android.mk
@@ -115,6 +115,10 @@ ifeq ($(TARGET_HW_DISK_ENCRYPTION),true)
@@ -115,6 +115,14 @@ ifeq ($(TARGET_HW_DISK_ENCRYPTION),true)
vold_cflags += -DCONFIG_HW_DISK_ENCRYPTION
endif
+ifeq ($(TARGET_WANTS_STRONG_ENCRYPTION),true)
+LOCAL_CFLAGS += -DCONFIG_STRONG_ENCRYPTION
+ifeq ($(TARGET_WANTS_AES192_ENCRYPTION),true)
+LOCAL_CFLAGS += -DCONFIG_AES192_ENCRYPTION
+endif
+
+ifeq ($(TARGET_WANTS_AES256_ENCRYPTION),true)
+LOCAL_CFLAGS += -DCONFIG_AES256_ENCRYPTION
+endif
+
ifneq ($(TARGET_EXFAT_DRIVER),)
vold_cflags += -DCONFIG_EXFAT_DRIVER=\"$(TARGET_EXFAT_DRIVER)\"
mini_src_files += fs/Exfat.cpp
diff --git a/cryptfs.cpp b/cryptfs.cpp
index f01929a..7fb3ffa 100644
index f01929a..af65601 100644
--- a/cryptfs.cpp
+++ b/cryptfs.cpp
@@ -75,9 +75,17 @@ extern "C" {
@@ -75,9 +75,22 @@ extern "C" {
#define DM_CRYPT_BUF_SIZE 4096
+#ifdef CONFIG_STRONG_ENCRYPTION
+#ifdef CONFIG_AES256_ENCRYPTION
+#define HASH_COUNT 6000
+#define KEY_LEN_BYTES 32
+#define IV_LEN_BYTES 32
+#define RSA_KEY_SIZE 4096
+#else ifdef CONFIG_AES192_ENCRYPTION
+#define HASH_COUNT 6000
+#define KEY_LEN_BYTES 24
+#define IV_LEN_BYTES 24
+#define RSA_KEY_SIZE 4096
+#else
#define HASH_COUNT 2000
#define KEY_LEN_BYTES 16
@ -46,7 +55,7 @@ index f01929a..7fb3ffa 100644
#define KEY_IN_FOOTER "footer"
@@ -93,7 +101,6 @@ extern "C" {
@@ -93,7 +106,6 @@ extern "C" {
#define TABLE_LOAD_RETRIES 10
@ -55,5 +64,5 @@ index f01929a..7fb3ffa 100644
#define RSA_EXPONENT 0x10001
#define KEYMASTER_CRYPTFS_RATE_LIMIT 1 // Maximum one try per second
--
2.16.2
2.17.0

5
Scripts/Common/Functions.sh
View File

@ -112,8 +112,9 @@ export -f enableForcedEncryption;
enableStrongEncryption() {
cd $base$1;
if [ -f BoardConfig.mk ]; then
echo "TARGET_WANTS_STRONG_ENCRYPTION := true" >> BoardConfig.mk;
echo "Enabled AES-256 encryption for $1";
echo "TARGET_WANTS_AES256_ENCRYPTION := true" >> BoardConfig.mk; #Has a huge performance impact
#echo "TARGET_WANTS_AES192_ENCRYPTION := true" >> BoardConfig.mk; #Has a slight performance impact, but only seems to work on select devices
echo "Enabled strong encryption for $1";
fi;
cd $base;
}

2
Scripts/LineageOS-14.1/Patch.sh
View File

@ -170,7 +170,7 @@ patch -p1 < $patches"android_system_keymaster/0001-Backport_Fixes.patch"; #Fixes
patch -p1 < $patches"android_system_keymaster/0002-Backport_Fixes.patch";
enterAndClear "system/vold";
patch -p1 < $patches"android_system_vold/0001-AES256.patch"; #Add a variable for enabling AES-256 bit encryption
patch -p1 < $patches"android_system_vold/0001-StrongAES.patch"; #Add a variable for enabling AES 192 or 256 encryption
enterAndClear "vendor/cm";
rm -rf overlay/common/vendor/cmsdk/packages; #Remove analytics

2
Scripts/LineageOS-15.1/Patch.sh
View File

@ -173,7 +173,7 @@ patch -p1 < $patches"android_system_sepolicy/0001-LGE_Fixes.patch"; #Fix -user b
if [ "$NON_COMMERCIAL_USE_PATCHES" = true ]; then patch -p1 < $patches"android_system_sepolicy/Copperhead/0002-Deny_USB.patch"; fi; #Deny USB support (Copperhead CC BY-NC-SA)
enterAndClear "system/vold";
patch -p1 < $patches"android_system_vold/0001-AES256.patch"; #Add a variable for enabling AES-256 bit encryption
patch -p1 < $patches"android_system_vold/0001-StrongAES.patch"; #Add a variable for enabling AES 192 or 256 encryption
enterAndClear "vendor/lineage";
rm -rf overlay/common/vendor/lineage-sdk/packages; #Remove analytics