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‎.gitignore

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.gradle
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/local.properties
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/.idea/workspace.xml
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.DS_Store

‎.idea/.name

+1
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‎.idea/compiler.xml

+23
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‎.idea/copyright/profiles_settings.xml

+3
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‎.idea/encodings.xml

+5
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‎.idea/gradle.xml

+18
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‎.idea/libraries/appcompat_v7_19_1_0.xml

+10
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‎.idea/libraries/support_v4_19_1_0.xml

+11
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‎.idea/misc.xml

+10
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‎.idea/modules.xml

+10
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‎.idea/scopes/scope_settings.xml

+5
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‎.idea/vcs.xml

+7
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‎EncryptionExample.iml

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<?xml version="1.0" encoding="UTF-8"?>
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<module external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<excludeFolder url="file://$MODULE_DIR$/.gradle" />
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<excludeFolder url="file://$MODULE_DIR$/build" />
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</content>
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<orderEntry type="jdk" jdkName="JDK" jdkType="JavaSDK" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>
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‎app/.gitignore

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/build

‎app/app.iml

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<?xml version="1.0" encoding="UTF-8"?>
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<module external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="EncryptionExample" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
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<component name="FacetManager">
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<facet type="android-gradle" name="Android-Gradle">
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<configuration>
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<option name="GRADLE_PROJECT_PATH" value=":app" />
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</configuration>
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</facet>
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<facet type="android" name="Android">
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<configuration>
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<option name="SELECTED_BUILD_VARIANT" value="debug" />
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<option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
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<option name="COMPILE_JAVA_TASK_NAME" value="compileDebugJava" />
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<option name="ASSEMBLE_TEST_TASK_NAME" value="assembleDebugTest" />
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<option name="SOURCE_GEN_TASK_NAME" value="generateDebugSources" />
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<option name="ALLOW_USER_CONFIGURATION" value="false" />
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<option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
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<option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
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<option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
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<option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
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</configuration>
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</facet>
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</component>
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<component name="NewModuleRootManager" inherit-compiler-output="false">
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<output url="file://$MODULE_DIR$/build/classes/debug" />
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/build/source/r/debug" isTestSource="false" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/source/aidl/debug" isTestSource="false" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/source/buildConfig/debug" isTestSource="false" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/source/rs/debug" isTestSource="false" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/res/rs/debug" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/build/source/r/test/debug" isTestSource="true" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/source/aidl/test/debug" isTestSource="true" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/source/buildConfig/test/debug" isTestSource="true" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/source/rs/test/debug" isTestSource="true" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/res/rs/test/debug" type="java-test-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/assets" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/assets" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
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<excludeFolder url="file://$MODULE_DIR$/build/apk" />
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<excludeFolder url="file://$MODULE_DIR$/build/assets" />
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<excludeFolder url="file://$MODULE_DIR$/build/bundles" />
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<excludeFolder url="file://$MODULE_DIR$/build/classes" />
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<excludeFolder url="file://$MODULE_DIR$/build/dependency-cache" />
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<excludeFolder url="file://$MODULE_DIR$/build/incremental" />
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<excludeFolder url="file://$MODULE_DIR$/build/libs" />
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<excludeFolder url="file://$MODULE_DIR$/build/manifests" />
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<excludeFolder url="file://$MODULE_DIR$/build/res" />
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<excludeFolder url="file://$MODULE_DIR$/build/symbols" />
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<excludeFolder url="file://$MODULE_DIR$/build/tmp" />
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</content>
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<orderEntry type="jdk" jdkName="Android API 19 Platform" jdkType="Android SDK" />
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<orderEntry type="sourceFolder" forTests="false" />
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<orderEntry type="library" exported="" name="appcompat-v7-19.1.0" level="project" />
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<orderEntry type="library" exported="" name="support-v4-19.1.0" level="project" />
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</component>
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</module>
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‎app/build.gradle

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apply plugin: 'android'
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android {
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compileSdkVersion 19
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buildToolsVersion "19.0.3"
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defaultConfig {
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minSdkVersion 14
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targetSdkVersion 19
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versionCode 1
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versionName "1.0"
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}
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buildTypes {
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release {
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runProguard false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
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}
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}
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}
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dependencies {
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compile fileTree(dir: 'libs', include: ['*.jar'])
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compile 'com.android.support:appcompat-v7:19.+'
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}

‎app/proguard-rules.txt

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# Add project specific ProGuard rules here.
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# By default, the flags in this file are appended to flags specified
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# in /Applications/Android Studio.app/sdk/tools/proguard/proguard-android.txt
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# You can edit the include path and order by changing the ProGuard
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# include property in project.properties.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# Add any project specific keep options here:
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}

‎app/src/main/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.codemonkeylabs.encryptionexample.app" >
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<application
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android:allowBackup="true"
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android:icon="@drawable/ic_launcher"
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android:label="@string/app_name"
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android:theme="@style/AppTheme" >
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<activity
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android:screenOrientation="portrait"
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android:name="com.codemonkeylabs.encryptionexample.app.EncryptionActivity"
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android:label="@string/app_name" >
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎app/src/main/java/com/codemonkeylabs/encryptionexample/app/AESEncryptDecrypt.java

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package com.codemonkeylabs.encryptionexample.app;
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import android.util.Base64;
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import android.util.Log;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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/**
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* Created by brianplummer on 4/29/14.
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*/
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public class AESEncryptDecrypt {
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public static final String NOT_SECRET_ENCRYPTION_KEY = "1234567812345678";
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private static final String IVS = "12345678";
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public String encrypt(String inData, byte[] key){
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byte[] encryptedData = aesEncrypt(inData.getBytes(), key,
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IVS.getBytes());
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return new String(Base64.encode(encryptedData,Base64.NO_WRAP));
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}
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public String decrypt(String inData, byte[] key){
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byte[] decryptData = aesDecrypt(Base64.decode(inData,Base64.NO_WRAP),
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key,IVS.getBytes());
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return new String(decryptData);
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}
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//Ripped from:
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// http://stackoverflow.com/questions/13579326/aes-128-encryption-in-android-and-net-with-custom-key-and-iv
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public static byte[] aesEncrypt(byte[] data, byte[] key, byte[] ivs) {
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try {
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
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byte[] finalIvs = new byte[16];
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int len = ivs.length > 16 ? 16 : ivs.length;
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System.arraycopy(ivs, 0, finalIvs, 0, len);
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IvParameterSpec ivps = new IvParameterSpec(finalIvs);
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cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivps);
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return cipher.doFinal(data);
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} catch (Exception e) {
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Log.e("##########",e.getMessage(),e);
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}
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return null;
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}
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public static byte[] aesDecrypt(byte[] data, byte[] key, byte[] ivs) {
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try {
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
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byte[] finalIvs = new byte[16];
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int len = ivs.length > 16 ? 16 : ivs.length;
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System.arraycopy(ivs, 0, finalIvs, 0, len);
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IvParameterSpec ivps = new IvParameterSpec(finalIvs);
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cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivps);
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return cipher.doFinal(data);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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}

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