文章目录




参考博客 :


在 ​​【Android 安全】DEX 加密 ( 支持多 DEX 的 Android 工程结构 )​​ 博客中介绍了 DEX 加密工程的基本结构 ,

app 是主应用 , 其 Module 类型是 “Phone & Tablet Module” ,

multiple-dex-core 是 Android 依赖库 , 其作用是解密并加载多 DEX 文件 , 其 Module 类型是 “Android Library” ,

multiple-dex-tools 是 Java 依赖库 , 其类型是 “Java or Kotlin Library” , 其作用是用于生成主 DEX ( 主 DEX 的作用就是用于解密与加载多 DEX ) , 并且还要为修改后的 APK 进行签名 ;



在 ​​【Android 安全】DEX 加密 ( 代理 Application 开发 | multiple-dex-core 依赖库开发 | 配置元数据 | 获取 apk 文件并准备相关目录 )​​ 博客中讲解了 multiple-dex-core 依赖库开发 , 每次启动都要解密与加载 dex 文件 , 在该博客中讲解到了 获取 apk 文件 , 并准备解压目录 ;

在 ​​【Android 安全】DEX 加密 ( 代理 Application 开发 | 解压 apk 文件 | 判定是否是第一次启动 | 递归删除文件操作 | 解压 Zip 文件操作 )​​ 博客中讲解了 apk 文件解压操作 ;

在 ​​【Android 安全】DEX 加密 ( 代理 Application 开发 | 加载 dex 文件 | 反射获取系统的 Element[] dexElements )​​博客中讲解了 dex 文件加载第一阶段 , 获取系统中的 Element[] dexElements ;

在 ​​【Android 安全】DEX 加密 ( 代理 Application 开发 | 加载 dex 文件 | 使用反射获取方法创建本应用的 dexElements | 各版本创建 dex 数组源码对比 )​​ 博客中讲解了讲解 dex 文件加载操作 第二阶段 , 创建本应用的 dex 文件数组 Element[] dexElements ;

在 ​​【Android 安全】DEX 加密 ( 代理 Application 开发 | 加载 dex 文件 | 将系统的 dexElements 与 应用的 dexElements 合并 | 替换操作 )​​ 博客中讲解了剩余的两个操作 :


  • 将 系统加载的 Element[] dexElements 数组 与 我们 自己的 Element[] dexElements 数组 进行合并操作 ;
  • 替换 ClassLoader 加载过程中的 Element[] dexElements 数组 ( 封装在 DexPathList 中 )

在 ​​【Android 安全】DEX 加密 ( Java 工具开发 | 加密解密算法 API | 编译代理 Application 依赖库 | 解压依赖库 aar 文件 ) )​​ 博客中介绍 加密解密算法 API , 编译代理 Application 依赖库 , 解压依赖库 aar 文件 ;

在 ​​【Android 安全】DEX 加密 ( Java 工具开发 | 生成 dex 文件 | Java 命令行执行 )​​ 博客中介绍 使用 SDK 中的 dx 工具生成 dex 文件 ;



在 ​​【Android 安全】DEX 加密 ( Java 工具开发 | 解压 apk 文件 | 加密生成 dex 文件 | 打包未签名 apk 文件 | 文件解压缩相关代码 )​​ 博客中讲解 将 app 主应用的 apk 文件解压 , 加密其中的 classes.dex 文件 , 并将代理 Application 依赖库中的 classes.dex 打包到未签名的 apk 文件中 ;

在 ​​【Android 安全】DEX 加密 ( Java 工具开发 | apk 文件对齐 )​​ 博客中讲解 apk 文件对齐操作 ;

在 ​​【Android 安全】DEX 加密 ( Java 工具开发 | apk 文件签名 )​​ 博客中讲解 apk 签名 ;







一、OpenSSL 开源库简介



OpenSSL 是开源密码库 , 其中封装了常用的 密码算法 , 常用密钥 , 证书封装管理 , SSL 协议 ;

SSL :​ 全称 Secure Sockets Layer , 安全套接层协议 , 提供网络中的保密传输功能 ;

参考简介 :​ ​​百度百科-OpenSSL​



OpenSSL 官网 : ​​https://www.openssl.org/​

【Android 安全】DEX 加密 ( 代理 Application 开发 | 交叉编译 OpenSSL 开源库 )_OpenSSL 交叉编译

OpenSSL Wiki 页面 : ​​https://wiki.openssl.org/index.php/Main_Page​

OpenSSL Wiki Android 编译页面 : ​​https://wiki.openssl.org/index.php/Android​

OpenSSL 源码下载地址 : ​​https://www.openssl.org/source/​

【Android 安全】DEX 加密 ( 代理 Application 开发 | 交叉编译 OpenSSL 开源库 )_交叉编译_02

GitHub 地址 : ​​https://www.openssl.org/source/​






二、OpenSSL 源码及环境变量脚本下载



参考 OpenSSL Wiki Android 编译页面 : ​​https://wiki.openssl.org/index.php/Android​​ ;



需要准备两个文件 :

#!/bin/bash
# Cross-compile environment for Android on ARMv7 and x86
#
# Contents licensed under the terms of the OpenSSL license
# http://www.openssl.org/source/license.html
#
# See http://wiki.openssl.org/index.php/FIPS_Library_and_Android
# and http://wiki.openssl.org/index.php/Android

#####################################################################

# Set ANDROID_NDK_ROOT to you NDK location. For example,
# /opt/android-ndk-r8e or /opt/android-ndk-r9. This can be done in a
# login script. If ANDROID_NDK_ROOT is not specified, the script will
# try to pick it up with the value of _ANDROID_NDK_ROOT below. If
# ANDROID_NDK_ROOT is set, then the value is ignored.
# _ANDROID_NDK="android-ndk-r8e"
_ANDROID_NDK="android-ndk-r9"
# _ANDROID_NDK="android-ndk-r10"

# Set _ANDROID_EABI to the EABI you want to use. You can find the
# list in $ANDROID_NDK_ROOT/toolchains. This value is always used.
# _ANDROID_EABI="x86-4.6"
# _ANDROID_EABI="arm-linux-androideabi-4.6"
_ANDROID_EABI="arm-linux-androideabi-4.8"

# Set _ANDROID_ARCH to the architecture you are building for.
# This value is always used.
# _ANDROID_ARCH=arch-x86
_ANDROID_ARCH=arch-arm

# Set _ANDROID_API to the API you want to use. You should set it
# to one of: android-14, android-9, android-8, android-14, android-5
# android-4, or android-3. You can't set it to the latest (for
# example, API-17) because the NDK does not supply the platform. At
# Android 5.0, there will likely be another platform added (android-22?).
# This value is always used.
# _ANDROID_API="android-14"
_ANDROID_API="android-18"
# _ANDROID_API="android-19"

#####################################################################

# If the user did not specify the NDK location, try and pick it up.
# We expect something like ANDROID_NDK_ROOT=/opt/android-ndk-r8e
# or ANDROID_NDK_ROOT=/usr/local/android-ndk-r8e.

if [ -z "$ANDROID_NDK_ROOT" ]; then

_ANDROID_NDK_ROOT=""
if [ -z "$_ANDROID_NDK_ROOT" ] && [ -d "/usr/local/$_ANDROID_NDK" ]; then
_ANDROID_NDK_ROOT="/usr/local/$_ANDROID_NDK"
fi

if [ -z "$_ANDROID_NDK_ROOT" ] && [ -d "/opt/$_ANDROID_NDK" ]; then
_ANDROID_NDK_ROOT="/opt/$_ANDROID_NDK"
fi

if [ -z "$_ANDROID_NDK_ROOT" ] && [ -d "$HOME/$_ANDROID_NDK" ]; then
_ANDROID_NDK_ROOT="$HOME/$_ANDROID_NDK"
fi

if [ -z "$_ANDROID_NDK_ROOT" ] && [ -d "$PWD/$_ANDROID_NDK" ]; then
_ANDROID_NDK_ROOT="$PWD/$_ANDROID_NDK"
fi

# If a path was set, then export it
if [ ! -z "$_ANDROID_NDK_ROOT" ] && [ -d "$_ANDROID_NDK_ROOT" ]; then
export ANDROID_NDK_ROOT="$_ANDROID_NDK_ROOT"
fi
fi

# Error checking
# ANDROID_NDK_ROOT should always be set by the user (even when not running this script)
# http://groups.google.com/group/android-ndk/browse_thread/thread/a998e139aca71d77
if [ -z "$ANDROID_NDK_ROOT" ] || [ ! -d "$ANDROID_NDK_ROOT" ]; then
echo "Error: ANDROID_NDK_ROOT is not a valid path. Please edit this script."
# echo "$ANDROID_NDK_ROOT"
# exit 1
fi

# Error checking
if [ ! -d "$ANDROID_NDK_ROOT/toolchains" ]; then
echo "Error: ANDROID_NDK_ROOT/toolchains is not a valid path. Please edit this script."
# echo "$ANDROID_NDK_ROOT/toolchains"
# exit 1
fi

# Error checking
if [ ! -d "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI" ]; then
echo "Error: ANDROID_EABI is not a valid path. Please edit this script."
# echo "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI"
# exit 1
fi

#####################################################################

# Based on ANDROID_NDK_ROOT, try and pick up the required toolchain. We expect something like:
# /opt/android-ndk-r83/toolchains/arm-linux-androideabi-4.7/prebuilt/linux-x86_64/bin
# Once we locate the toolchain, we add it to the PATH. Note: this is the 'hard way' of
# doing things according to the NDK documentation for Ice Cream Sandwich.
# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html

ANDROID_TOOLCHAIN=""
for host in "linux-x86_64" "linux-x86" "darwin-x86_64" "darwin-x86"
do
if [ -d "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/bin" ]; then
ANDROID_TOOLCHAIN="$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/bin"
break
fi
done

# Error checking
if [ -z "$ANDROID_TOOLCHAIN" ] || [ ! -d "$ANDROID_TOOLCHAIN" ]; then
echo "Error: ANDROID_TOOLCHAIN is not valid. Please edit this script."
# echo "$ANDROID_TOOLCHAIN"
# exit 1
fi

case $_ANDROID_ARCH in
arch-arm)
ANDROID_TOOLS="arm-linux-androideabi-gcc arm-linux-androideabi-ranlib arm-linux-androideabi-ld"
;;
arch-x86)
ANDROID_TOOLS="i686-linux-android-gcc i686-linux-android-ranlib i686-linux-android-ld"
;;
*)
echo "ERROR ERROR ERROR"
;;
esac

for tool in $ANDROID_TOOLS
do
# Error checking
if [ ! -e "$ANDROID_TOOLCHAIN/$tool" ]; then
echo "Error: Failed to find $tool. Please edit this script."
# echo "$ANDROID_TOOLCHAIN/$tool"
# exit 1
fi
done

# Only modify/export PATH if ANDROID_TOOLCHAIN good
if [ ! -z "$ANDROID_TOOLCHAIN" ]; then
export ANDROID_TOOLCHAIN="$ANDROID_TOOLCHAIN"
export PATH="$ANDROID_TOOLCHAIN":"$PATH"
fi

#####################################################################

# For the Android SYSROOT. Can be used on the command line with --sysroot
# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
export ANDROID_SYSROOT="$ANDROID_NDK_ROOT/platforms/$_ANDROID_API/$_ANDROID_ARCH"
export CROSS_SYSROOT="$ANDROID_SYSROOT"
export NDK_SYSROOT="$ANDROID_SYSROOT"

# Error checking
if [ -z "$ANDROID_SYSROOT" ] || [ ! -d "$ANDROID_SYSROOT" ]; then
echo "Error: ANDROID_SYSROOT is not valid. Please edit this script."
# echo "$ANDROID_SYSROOT"
# exit 1
fi

#####################################################################

# If the user did not specify the FIPS_SIG location, try and pick it up
# If the user specified a bad location, then try and pick it up too.
if [ -z "$FIPS_SIG" ] || [ ! -e "$FIPS_SIG" ]; then

# Try and locate it
_FIPS_SIG=""
if [ -d "/usr/local/ssl/$_ANDROID_API" ]; then
_FIPS_SIG=`find "/usr/local/ssl/$_ANDROID_API" -name incore`
fi

if [ ! -e "$_FIPS_SIG" ]; then
_FIPS_SIG=`find $PWD -name incore`
fi

# If a path was set, then export it
if [ ! -z "$_FIPS_SIG" ] && [ -e "$_FIPS_SIG" ]; then
export FIPS_SIG="$_FIPS_SIG"
fi
fi

# Error checking. Its OK to ignore this if you are *not* building for FIPS
if [ -z "$FIPS_SIG" ] || [ ! -e "$FIPS_SIG" ]; then
echo "Error: FIPS_SIG does not specify incore module. Please edit this script."
# echo "$FIPS_SIG"
# exit 1
fi

#####################################################################

# Most of these should be OK (MACHINE, SYSTEM, ARCH). RELEASE is ignored.
export MACHINE=armv7
export RELEASE=2.6.37
export SYSTEM=android
export ARCH=arm
export CROSS_COMPILE="arm-linux-androideabi-"

if [ "$_ANDROID_ARCH" == "arch-x86" ]; then
export MACHINE=i686
export RELEASE=2.6.37
export SYSTEM=android
export ARCH=x86
export CROSS_COMPILE="i686-linux-android-"
fi

# For the Android toolchain
# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
export ANDROID_SYSROOT="$ANDROID_NDK_ROOT/platforms/$_ANDROID_API/$_ANDROID_ARCH"
export SYSROOT="$ANDROID_SYSROOT"
export NDK_SYSROOT="$ANDROID_SYSROOT"
export ANDROID_NDK_SYSROOT="$ANDROID_SYSROOT"
export ANDROID_API="$_ANDROID_API"

# CROSS_COMPILE and ANDROID_DEV are DFW (Don't Fiddle With). Its used by OpenSSL build system.
# export CROSS_COMPILE="arm-linux-androideabi-"
export ANDROID_DEV="$ANDROID_NDK_ROOT/platforms/$_ANDROID_API/$_ANDROID_ARCH/usr"
export HOSTCC=gcc

VERBOSE=1
if [ ! -z "$VERBOSE" ] && [ "$VERBOSE" != "0" ]; then
echo "ANDROID_NDK_ROOT: $ANDROID_NDK_ROOT"
echo "ANDROID_ARCH: $_ANDROID_ARCH"
echo "ANDROID_EABI: $_ANDROID_EABI"
echo "ANDROID_API: $ANDROID_API"
echo "ANDROID_SYSROOT: $ANDROID_SYSROOT"
echo "ANDROID_TOOLCHAIN: $ANDROID_TOOLCHAIN"
echo "FIPS_SIG: $FIPS_SIG"
echo "CROSS_COMPILE: $CROSS_COMPILE"
echo "ANDROID_DEV: $ANDROID_DEV"
fi

将上述两个文件都放在同一个目录中 ;






三、修改环境变量脚本



修改 Setenv-android.sh 脚本中的如下选项 :

_ANDROID_NDK​ : NDK 版本 , 如 android-ndk-r8e ; 如果设置了 ANDROID_NDK_ROOT 环境变量 , 该选项可以不用设置 ;

_ANDROID_NDK="android-ndk-r17c"



ANDROID_NDK_ROOT​ : 指定 NDK 路径 , 如果配置了该路径 , 可以忽略上面的 _ANDROID_NDK 配置 ;

# 这里如果用户没有指定 ANDROID_NDK_ROOT NDK 工具根目录 , 就执行下面的逻辑, 
# 如果指定了, 就没有下面代码什么事了
# 这里指定下该环境变量 , 上面的 _ANDROID_NDK 变量也失去了相应作用
export ANDROID_NDK_ROOT=/root/NDK/android-ndk-r17c



_ANDROID_ARCH​ : 编译的 CPU 架构 , arch-x86 , arch-arm ;

_ANDROID_ARCH=arch-arm



_ANDROID_EABI​ : 交叉编译器 , 如 arm-linux-androideabi-4.6, arm-linux-androideabi-4.8, x86-4.6 or x86-4.8 ; 配置前到 NDK 目录下的 toolchains 中查看要使用哪个版本的交叉编译工具 , 该配置一定要从 NDK 目录中查找 ;

_ANDROID_EABI="arm-linux-androideabi-4.9"

【Android 安全】DEX 加密 ( 代理 Application 开发 | 交叉编译 OpenSSL 开源库 )_OpenSSL_03



_ANDROID_API​ : 最低 Android 版本 , 如 android-14 , android-18 ;

_ANDROID_API="android-18"



修改后的 setenv-android.sh 脚本 :

#!/bin/bash
# Cross-compile environment for Android on ARMv7 and x86
#
# Contents licensed under the terms of the OpenSSL license
# http://www.openssl.org/source/license.html
#
# See http://wiki.openssl.org/index.php/FIPS_Library_and_Android
# and http://wiki.openssl.org/index.php/Android

#####################################################################

# Set ANDROID_NDK_ROOT to you NDK location. For example,
# /opt/android-ndk-r8e or /opt/android-ndk-r9. This can be done in a
# login script. If ANDROID_NDK_ROOT is not specified, the script will
# try to pick it up with the value of _ANDROID_NDK_ROOT below. If
# ANDROID_NDK_ROOT is set, then the value is ignored.
# _ANDROID_NDK="android-ndk-r8e"
_ANDROID_NDK="android-ndk-r17c"
# _ANDROID_NDK="android-ndk-r10"

# Set _ANDROID_EABI to the EABI you want to use. You can find the
# list in $ANDROID_NDK_ROOT/toolchains. This value is always used.
# _ANDROID_EABI="x86-4.6"
# _ANDROID_EABI="arm-linux-androideabi-4.6"
_ANDROID_EABI="arm-linux-androideabi-4.9"

# Set _ANDROID_ARCH to the architecture you are building for.
# This value is always used.
# _ANDROID_ARCH=arch-x86
_ANDROID_ARCH=arch-arm

# Set _ANDROID_API to the API you want to use. You should set it
# to one of: android-14, android-9, android-8, android-14, android-5
# android-4, or android-3. You can't set it to the latest (for
# example, API-17) because the NDK does not supply the platform. At
# Android 5.0, there will likely be another platform added (android-22?).
# This value is always used.
# _ANDROID_API="android-14"
_ANDROID_API="android-18"
# _ANDROID_API="android-19"

#####################################################################

# If the user did not specify the NDK location, try and pick it up.
# We expect something like ANDROID_NDK_ROOT=/opt/android-ndk-r8e
# or ANDROID_NDK_ROOT=/usr/local/android-ndk-r8e.

# 这里如果用户没有指定 ANDROID_NDK_ROOT NDK 工具根目录 , 就执行下面的逻辑,
# 如果指定了, 就没有下面代码什么事了
# 这里指定下该环境变量 , 上面的 _ANDROID_NDK 变量也失去了相应作用
export ANDROID_NDK_ROOT=/root/NDK/android-ndk-r17c

if [ -z "$ANDROID_NDK_ROOT" ]; then

_ANDROID_NDK_ROOT=""
if [ -z "$_ANDROID_NDK_ROOT" ] && [ -d "/usr/local/$_ANDROID_NDK" ]; then
_ANDROID_NDK_ROOT="/usr/local/$_ANDROID_NDK"
fi

if [ -z "$_ANDROID_NDK_ROOT" ] && [ -d "/opt/$_ANDROID_NDK" ]; then
_ANDROID_NDK_ROOT="/opt/$_ANDROID_NDK"
fi

if [ -z "$_ANDROID_NDK_ROOT" ] && [ -d "$HOME/$_ANDROID_NDK" ]; then
_ANDROID_NDK_ROOT="$HOME/$_ANDROID_NDK"
fi

if [ -z "$_ANDROID_NDK_ROOT" ] && [ -d "$PWD/$_ANDROID_NDK" ]; then
_ANDROID_NDK_ROOT="$PWD/$_ANDROID_NDK"
fi

# If a path was set, then export it
if [ ! -z "$_ANDROID_NDK_ROOT" ] && [ -d "$_ANDROID_NDK_ROOT" ]; then
export ANDROID_NDK_ROOT="$_ANDROID_NDK_ROOT"
fi
fi

# Error checking
# ANDROID_NDK_ROOT should always be set by the user (even when not running this script)
# http://groups.google.com/group/android-ndk/browse_thread/thread/a998e139aca71d77
if [ -z "$ANDROID_NDK_ROOT" ] || [ ! -d "$ANDROID_NDK_ROOT" ]; then
echo "Error: ANDROID_NDK_ROOT is not a valid path. Please edit this script."
# echo "$ANDROID_NDK_ROOT"
# exit 1
fi

# Error checking
if [ ! -d "$ANDROID_NDK_ROOT/toolchains" ]; then
echo "Error: ANDROID_NDK_ROOT/toolchains is not a valid path. Please edit this script."
# echo "$ANDROID_NDK_ROOT/toolchains"
# exit 1
fi

# Error checking
if [ ! -d "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI" ]; then
echo "Error: ANDROID_EABI is not a valid path. Please edit this script."
# echo "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI"
# exit 1
fi

#####################################################################

# Based on ANDROID_NDK_ROOT, try and pick up the required toolchain. We expect something like:
# /opt/android-ndk-r83/toolchains/arm-linux-androideabi-4.7/prebuilt/linux-x86_64/bin
# Once we locate the toolchain, we add it to the PATH. Note: this is the 'hard way' of
# doing things according to the NDK documentation for Ice Cream Sandwich.
# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html

ANDROID_TOOLCHAIN=""
for host in "linux-x86_64" "linux-x86" "darwin-x86_64" "darwin-x86"
do
if [ -d "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/bin" ]; then
ANDROID_TOOLCHAIN="$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/bin"
break
fi
done

# Error checking
if [ -z "$ANDROID_TOOLCHAIN" ] || [ ! -d "$ANDROID_TOOLCHAIN" ]; then
echo "Error: ANDROID_TOOLCHAIN is not valid. Please edit this script."
# echo "$ANDROID_TOOLCHAIN"
# exit 1
fi

case $_ANDROID_ARCH in
arch-arm)
ANDROID_TOOLS="arm-linux-androideabi-gcc arm-linux-androideabi-ranlib arm-linux-androideabi-ld"
;;
arch-x86)
ANDROID_TOOLS="i686-linux-android-gcc i686-linux-android-ranlib i686-linux-android-ld"
;;
*)
echo "ERROR ERROR ERROR"
;;
esac

for tool in $ANDROID_TOOLS
do
# Error checking
if [ ! -e "$ANDROID_TOOLCHAIN/$tool" ]; then
echo "Error: Failed to find $tool. Please edit this script."
# echo "$ANDROID_TOOLCHAIN/$tool"
# exit 1
fi
done

# Only modify/export PATH if ANDROID_TOOLCHAIN good
if [ ! -z "$ANDROID_TOOLCHAIN" ]; then
export ANDROID_TOOLCHAIN="$ANDROID_TOOLCHAIN"
export PATH="$ANDROID_TOOLCHAIN":"$PATH"
fi

#####################################################################

# For the Android SYSROOT. Can be used on the command line with --sysroot
# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
export ANDROID_SYSROOT="$ANDROID_NDK_ROOT/platforms/$_ANDROID_API/$_ANDROID_ARCH"
export CROSS_SYSROOT="$ANDROID_SYSROOT"
export NDK_SYSROOT="$ANDROID_SYSROOT"

# Error checking
if [ -z "$ANDROID_SYSROOT" ] || [ ! -d "$ANDROID_SYSROOT" ]; then
echo "Error: ANDROID_SYSROOT is not valid. Please edit this script."
# echo "$ANDROID_SYSROOT"
# exit 1
fi

#####################################################################

# If the user did not specify the FIPS_SIG location, try and pick it up
# If the user specified a bad location, then try and pick it up too.
if [ -z "$FIPS_SIG" ] || [ ! -e "$FIPS_SIG" ]; then

# Try and locate it
_FIPS_SIG=""
if [ -d "/usr/local/ssl/$_ANDROID_API" ]; then
_FIPS_SIG=`find "/usr/local/ssl/$_ANDROID_API" -name incore`
fi

if [ ! -e "$_FIPS_SIG" ]; then
_FIPS_SIG=`find $PWD -name incore`
fi

# If a path was set, then export it
if [ ! -z "$_FIPS_SIG" ] && [ -e "$_FIPS_SIG" ]; then
export FIPS_SIG="$_FIPS_SIG"
fi
fi

# Error checking. Its OK to ignore this if you are *not* building for FIPS
if [ -z "$FIPS_SIG" ] || [ ! -e "$FIPS_SIG" ]; then
echo "Error: FIPS_SIG does not specify incore module. Please edit this script."
# echo "$FIPS_SIG"
# exit 1
fi

#####################################################################

# Most of these should be OK (MACHINE, SYSTEM, ARCH). RELEASE is ignored.
export MACHINE=armv7
export RELEASE=2.6.37
export SYSTEM=android
export ARCH=arm
export CROSS_COMPILE="arm-linux-androideabi-"

if [ "$_ANDROID_ARCH" == "arch-x86" ]; then
export MACHINE=i686
export RELEASE=2.6.37
export SYSTEM=android
export ARCH=x86
export CROSS_COMPILE="i686-linux-android-"
fi

# For the Android toolchain
# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
export ANDROID_SYSROOT="$ANDROID_NDK_ROOT/platforms/$_ANDROID_API/$_ANDROID_ARCH"
export SYSROOT="$ANDROID_SYSROOT"
export NDK_SYSROOT="$ANDROID_SYSROOT"
export ANDROID_NDK_SYSROOT="$ANDROID_SYSROOT"
export ANDROID_API="$_ANDROID_API"

# CROSS_COMPILE and ANDROID_DEV are DFW (Don't Fiddle With). Its used by OpenSSL build system.
# export CROSS_COMPILE="arm-linux-androideabi-"
export ANDROID_DEV="$ANDROID_NDK_ROOT/platforms/$_ANDROID_API/$_ANDROID_ARCH/usr"
export HOSTCC=gcc

VERBOSE=1
if [ ! -z "$VERBOSE" ] && [ "$VERBOSE" != "0" ]; then
echo "ANDROID_NDK_ROOT: $ANDROID_NDK_ROOT"
echo "ANDROID_ARCH: $_ANDROID_ARCH"
echo "ANDROID_EABI: $_ANDROID_EABI"
echo "ANDROID_API: $ANDROID_API"
echo "ANDROID_SYSROOT: $ANDROID_SYSROOT"
echo "ANDROID_TOOLCHAIN: $ANDROID_TOOLCHAIN"
echo "FIPS_SIG: $FIPS_SIG"
echo "CROSS_COMPILE: $CROSS_COMPILE"
echo "ANDROID_DEV: $ANDROID_DEV"
fi






四、OpenSSL 交叉编译



准备源码和环境变量脚本 ,

# 如果之前有该目录, 删除
rm -rf openssl-1.1.0g/
# 解压源码
tar xvf openssl-1.1.0g.tar.gz
# 修改 shell 脚本权限
chmod a+x setenv-android.sh

初始化环境变量 , 并进入源码根目录 ;

# 初始化环境变量 
source ./setenv-android.sh
# 进入源码根目录
cd openssl-1.1.0g/

在源码根目录中运行如下命令 , --openssldir 指定输出目录 , --prefix 指定编译后的动态库输出目录 ;

# 生成 Makefile 编译脚本 
./config shared no-ssl2 no-ssl3 no-comp no-hw no-engine --openssldir=`pwd`/android/arm/openssl --prefix=`pwd`/android/arm

编译源码 : 执行下面的代码 , 完成交叉编译工作 ;

# 编译源码 
make depend
make all

将生成的库安装到 指定的目录中 ; 该步骤的作用是将编译后的结果 , 输出到 --prefix=​​pwd​​/android/arm 指定的目录中 ;

# 安装源码到指定目录 
sudo -E make install CC=/root/NDK/android-ndk-r17c/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc RANLIB=/root/NDK/android-ndk-r17c/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ranlib

编译结果 :

【Android 安全】DEX 加密 ( 代理 Application 开发 | 交叉编译 OpenSSL 开源库 )_OpenSSL_04






五、OpenSSL 交叉编译相关资源下载