├── app ├── .gitignore ├── src │ └── main │ │ ├── res │ │ ├── values │ │ │ ├── strings.xml │ │ │ ├── colors.xml │ │ │ └── styles.xml │ │ ├── mipmap-hdpi │ │ │ ├── ic_launcher.png │ │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ │ ├── ic_launcher.png │ │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ │ ├── ic_launcher.png │ │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ │ ├── ic_launcher.png │ │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ │ ├── ic_launcher.png │ │ │ └── ic_launcher_round.png │ │ ├── mipmap-anydpi-v26 │ │ │ ├── ic_launcher.xml │ │ │ └── ic_launcher_round.xml │ │ ├── drawable-v24 │ │ │ └── ic_launcher_foreground.xml │ │ ├── layout │ │ │ └── activity_main.xml │ │ └── drawable │ │ │ └── ic_launcher_background.xml │ │ ├── java │ │ └── encrypt_decrypt │ │ │ └── coderzheaven │ │ │ └── com │ │ │ └── encryptdecryptandroid │ │ │ ├── Constants.java │ │ │ ├── PrefUtils.java │ │ │ ├── Player.java │ │ │ ├── EncryptDecryptUtils.java │ │ │ ├── FileUtils.java │ │ │ └── MainActivity.java │ │ └── AndroidManifest.xml ├── proguard-rules.pro └── build.gradle ├── settings.gradle ├── encrypt_decrypt_video_android.mp4 ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── encrypt_decrypt_android_demo_screenshot.png ├── .gitignore ├── .idea ├── vcs.xml ├── modules.xml ├── runConfigurations.xml ├── gradle.xml └── misc.xml ├── README.md ├── gradle.properties ├── gradlew.bat └── gradlew /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | Encrypt and Decrypt Audio 3 | 4 | -------------------------------------------------------------------------------- /encrypt_decrypt_video_android.mp4: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/encrypt_decrypt_video_android.mp4 -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /encrypt_decrypt_android_demo_screenshot.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/encrypt_decrypt_android_demo_screenshot.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/workspace.xml 5 | /.idea/libraries 6 | .DS_Store 7 | /build 8 | /captures 9 | .externalNativeBuild 10 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MrVipinVijayan/EncryptDecryptAndroid/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # EncryptDecryptAndroid 2 | A Sample app which helps to encrypt an audio file and decrypt to play back. 3 | 4 | Watch the demo video here. 5 | https://github.com/MrVipinVijayan/EncryptDecryptAndroid/blob/master/encrypt_decrypt_video_android.mp4 6 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Sun May 06 15:31:58 EDT 2018 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip 7 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 17 | 18 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Gradle settings configured through the IDE *will override* 5 | # any settings specified in this file. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | org.gradle.jvmargs=-Xmx1536m 13 | 14 | # When configured, Gradle will run in incubating parallel mode. 15 | # This option should only be used with decoupled projects. More details, visit 16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 17 | # org.gradle.parallel=true 18 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/main/java/encrypt_decrypt/coderzheaven/com/encryptdecryptandroid/Constants.java: -------------------------------------------------------------------------------- 1 | package encrypt_decrypt.coderzheaven.com.encryptdecryptandroid; 2 | 3 | /** 4 | * Created by James From CoderzHeaven on 5/2/18. 5 | */ 6 | 7 | public class Constants { 8 | 9 | // Files 10 | public static final String DOWNLOAD_AUDIO_URL = "http://www.noiseaddicts.com/samples_1w72b820/272.mp3"; 11 | public static final String FILE_NAME = "audio.mp3"; 12 | public static final String TEMP_FILE_NAME = "temp"; 13 | public static final String FILE_EXT = ".mp3"; 14 | public static final String DIR_NAME = "Audio"; 15 | public static final int OUTPUT_KEY_LENGTH = 256; 16 | 17 | // Algorithm 18 | public static final String CIPHER_ALGORITHM = "AES/CBC/PKCS5Padding"; 19 | public static final String KEY_SPEC_ALGORITHM = "AES"; 20 | public static final String PROVIDER = "BC"; 21 | 22 | public static final String SECRET_KEY = "SECRET_KEY"; 23 | } 24 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | -------------------------------------------------------------------------------- /app/src/main/java/encrypt_decrypt/coderzheaven/com/encryptdecryptandroid/PrefUtils.java: -------------------------------------------------------------------------------- 1 | package encrypt_decrypt.coderzheaven.com.encryptdecryptandroid; 2 | 3 | import android.content.Context; 4 | import android.content.SharedPreferences; 5 | import android.preference.PreferenceManager; 6 | 7 | import static encrypt_decrypt.coderzheaven.com.encryptdecryptandroid.Constants.SECRET_KEY; 8 | 9 | public class PrefUtils { 10 | 11 | public static final PrefUtils prefUtils = new PrefUtils(); 12 | public static SharedPreferences myPrefs = null; 13 | 14 | public static PrefUtils getInstance(Context context) { 15 | if (null == myPrefs) 16 | myPrefs = PreferenceManager.getDefaultSharedPreferences(context); 17 | return prefUtils; 18 | } 19 | 20 | public void saveSecretKey(String value) { 21 | SharedPreferences.Editor editor = myPrefs.edit(); 22 | editor.putString(SECRET_KEY, value); 23 | editor.commit(); 24 | } 25 | 26 | public String getSecretKey() { 27 | return myPrefs.getString(SECRET_KEY, null); 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 26 5 | defaultConfig { 6 | applicationId "encrypt_decrypt.coderzheaven.com.encryptdecryptandroid" 7 | minSdkVersion 15 8 | targetSdkVersion 26 9 | versionCode 1 10 | versionName "1.0" 11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 12 | } 13 | buildTypes { 14 | release { 15 | minifyEnabled false 16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 17 | } 18 | } 19 | } 20 | 21 | dependencies { 22 | implementation fileTree(dir: 'libs', include: ['*.jar']) 23 | implementation 'com.android.support:appcompat-v7:26.1.0' 24 | implementation 'com.android.support.constraint:constraint-layout:1.1.0' 25 | compile 'com.android.support:support-annotations:27.1.1' 26 | compile 'com.mindorks.android:prdownloader:0.4.0' 27 | testImplementation 'junit:junit:4.12' 28 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 29 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 30 | } 31 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 16 | 26 | 27 | 28 | 29 | 30 | 31 | 33 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /app/src/main/java/encrypt_decrypt/coderzheaven/com/encryptdecryptandroid/Player.java: -------------------------------------------------------------------------------- 1 | package encrypt_decrypt.coderzheaven.com.encryptdecryptandroid; 2 | 3 | import android.media.AudioManager; 4 | import android.media.MediaPlayer; 5 | import android.os.Handler; 6 | import android.os.Message; 7 | 8 | import java.io.FileDescriptor; 9 | 10 | /** 11 | * Created by James from CoderzHeaven on 5/7/18. 12 | */ 13 | 14 | public class Player implements MediaPlayer.OnCompletionListener { 15 | 16 | private MediaPlayer mediaPlayer; 17 | private Handler handler; 18 | 19 | public Player(Handler handler) { 20 | this.handler = handler; 21 | } 22 | 23 | private void initPlayer() { 24 | if (null == mediaPlayer) { 25 | mediaPlayer = new MediaPlayer(); 26 | } 27 | } 28 | 29 | public void play(FileDescriptor fileDescriptor) { 30 | initPlayer(); 31 | stopAudio(); 32 | playAudio(fileDescriptor); 33 | } 34 | 35 | public void playAudio(FileDescriptor fileDescriptor) { 36 | mediaPlayer.reset(); 37 | try { 38 | mediaPlayer.setOnCompletionListener(this); 39 | mediaPlayer.setDataSource(fileDescriptor); 40 | mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); 41 | mediaPlayer.prepare(); 42 | mediaPlayer.start(); 43 | } catch (Exception e) { 44 | } 45 | } 46 | 47 | private void stopAudio() { 48 | if (null != mediaPlayer && mediaPlayer.isPlaying()) { 49 | mediaPlayer.stop(); 50 | } 51 | } 52 | 53 | @Override 54 | public void onCompletion(MediaPlayer mediaPlayer) { 55 | Message message = new Message(); 56 | message.obj = "Audio play completed."; 57 | handler.dispatchMessage(message); 58 | } 59 | 60 | private void releasePlayer() { 61 | if (null != mediaPlayer) { 62 | mediaPlayer.release(); 63 | } 64 | } 65 | 66 | public void destroyPlayer() { 67 | stopAudio(); 68 | releasePlayer(); 69 | mediaPlayer = null; 70 | } 71 | } 72 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 10 | 11 | 19 | 20 |