Initial commit

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

LICENSE

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+MIT License
+
+Copyright (c) 2023 Nemesis
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

README.md

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+# DroidCrypt
+
+<!-- DESCRIPTION -->
+## Description:
+
+File and text encryption in Android offers crucial benefits in protecting sensitive data. By encrypting files and text, users can prevent unauthorized access, ensuring confidentiality and privacy. This is especially vital in a world where mobile devices often contain personal, financial, and business-related information. Encryption adds an additional layer of security, preventing malicious actors from intercepting or tampering with data, thus mitigating the risk of data breaches and identity theft. 
+
+<!-- FEATURES -->
+## Features:
+
+- Uses AES-256-GCM for encryption
+
+- Uses Scrypt for key derivation with CPU/Memory cost of 32768, block size of 16, and parallelization of 4
+
+- Built in Java
+
+<!-- INSTALLATION -->
+## Installation:
+
+### Option 1:
+
+[Download](https://github.com/umutcamliyurt/DroidCrypt/releases) from releases
+
+### Option 2:
+
+Build it yourself using [Android Studio](https://developer.android.com/studio)
+
+<!-- SCREENSHOTS -->
+## Screenshots:
+
+<img src="image.png" width="400" height="800" />
+
+<!-- LICENSE -->
+## License
+
+Distributed under the MIT License. See `LICENSE` for more information.

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    alias(libs.plugins.android.application)
+}
+
+android {
+    namespace 'com.nemesis.droidcrypt'
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "com.nemesis.droidcrypt"
+        minSdk 30
+        targetSdk 34
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            signingConfig signingConfigs.debug
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    // Add the dependenciesInfo block inside the android block
+    dependenciesInfo {
+        includeInApk false
+        includeInBundle false
+    }
+}
+
+dependencies {
+    implementation libs.appcompat
+    implementation libs.material
+    implementation libs.bcprov.jdk15on
+    testImplementation libs.junit
+    androidTestImplementation libs.ext.junit
+    androidTestImplementation libs.espresso.core
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/example/droidcrypt/ExampleInstrumentedTest.java

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+package com.nemesis.droidcrypt;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.droidcrypt", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.nemesis.droidcrypt">
+
+    <!-- Permissions for reading media files -->
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
+    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
+
+    <!-- Permission for accessing selected photos -->
+    <uses-permission android:name="android.permission.ACCESS_SELECTED_PHOTOS" />
+    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
+
+    <!-- Request legacy storage for compatibility -->
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="30"
+        tools:ignore="ScopedStorage" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"
+        android:maxSdkVersion="30"
+        tools:ignore="ScopedStorage" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.DroidCrypt"
+        tools:targetApi="31">
+
+        <activity
+            android:name="com.nemesis.droidcrypt.MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>