christopherney / Enigma
Licence: mit
Gradle Plugin - Obfuscator String Encryption (Android/Java)
Stars: ✭ 43
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java
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Enigma
Gradle Plugin - Obfuscator Strings Encryption (Android/Java)
This project is a simple Gradle plugin to help you to encrypt all String values of your Android Java code at the compilation time.
Important: Enigma plugin won't execute if your project is not managed by a SCM tool such as git or SVN.
Recommended: commit your changes before compile your app with Enigma activated
Links:
- Gradle plugin: https://plugins.gradle.org/plugin/com.chrisney.enigma
- Medium story: https://link.medium.com/3NrSPUdl91
How integrate it?
First of all, be sure that a SCM is initialized in your project, such as Git for example:
$ cd /path/of/your/project/
$ git init
$ git add .
$ git commit -m "Initial commit"
build.gradle (project)
buildscript {
repositories {
google()
jcenter()
// Add Maven repo
maven {
url "https://plugins.gradle.org/m2/"
}
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.2'
// Add the Enigma classpath
classpath 'gradle.plugin.chrisney:enigma:1.0.0.8'
}
}
build.gradle (app)
apply plugin: 'com.android.application'
// Add Enigma Plugin
apply plugin: 'com.chrisney.enigma'
// Set Enigma options:
enigma.enabled = true
enigma.injectFakeKeys = true
enigma.ignoredClasses = ["com.my.packagename.MainActivity.java"]
android {
buildTypes {
release {
// Don't forget to enable ProGuard !
minifyEnabled true
}
}
}
Compile your App
During the compilation process, Enigma plugin will:
- Backup all Java files in backup directory enigma-backup
- Parse your code and encrypt all String values for each Java file
- Inject Enigma source code (encryption code)
- Inject fake secrete keys (optional - check enigma.injectFakeKeys option)
- Compile your App (classic process)
- Restore your original Java files
$ ./gradlew assembleRelease
> Task :app:backup
💾 Backup: /app/src/main/java/com/app/helloworld/MainActivity.java
💾 Backup: /app/src/main/java/com/app/helloworld/helpers/IResponse.java
💾 Backup: /app/src/main/java/com/app/helloworld/helpers/Utils.java
💾 Backup: /app/src/main/java/com/app/helloworld/helpers/ATest.java
💾 Backup: /app/src/main/java/com/app/helloworld/helpers/TestImpl.java
💾 Backup: /app/src/main/java/com/app/helloworld/Constants.java
> Task :app:encrypt
🔐 MainActivity.java encrypted
🔐 IResponse.java encrypted
🔐 Utils.java encrypted
🔐 ATest.java encrypted
🔐 TestImpl.java encrypted
🔐 Constants.java encrypted
> Task :app:injectCode
✏️ Add Enigma code
> Task :app:restore
♻️ Restore: /app/src/main/java/com/proto/helloworld/MainActivity.java
♻️ Restore: /app/src/main/java/com/app/helloworld/helpers/IResponse.java
♻️ Restore: /app/src/main/java/com/app/helloworld/helpers/Utils.java
♻️ Restore: /app/src/main/java/com/app/helloworld/helpers/ATest.java
♻️ Restore: /app/src/main/java/com/app/helloworld/helpers/TestImpl.java
♻️ Restore: /app/src/main/java/com/app/helloworld/Constants.java
🧹 Remove Enigma code: ~/HelloWorld/app/src/main/java/com/app
Options
Bellow the options of Enigma plugin:
- enigma.enabled (true | false) : Enable or disable the string encryption process (default: true)
- enigma.injectFakeKeys (true | false) : if activated, create fake string keys and injected it into your code (default: true)
- enigma.hash (string) : let you define your own encryption key (32 characters recommended)
- enigma.classes (array of strings) : let you defined the only classes to encrypt
- enigma.ignoredClasses (array of strings): define the classes to not encrypt
- enigma.srcJava (string): root path of your JAVA files (default: /app/src/main/java)
Unit Tests
The JAVA parser is unit tested with more than 300 complex JAVA classes:
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