android-cipher

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android cipher a mini project developed in my college university of mysore school of engineering to encrypt txt and password and performs 8 levels of encryption

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# 🔐 Android Cipher

[![Made with Love](https://img.shields.io/badge/Made%20with-❤️-red.svg)](https://github.com/koushik4475)
[![Android](https://img.shields.io/badge/Platform-Android-green.svg)](https://www.android.com/)
[![Java](https://img.shields.io/badge/Language-Java-orange.svg)](https://www.java.com/)
[![Blowfish](https://img.shields.io/badge/Algorithm-Blowfish-blue.svg)](https://en.wikipedia.org/wiki/Blowfish_(cipher))
[![License](https://img.shields.io/badge/License-MIT-yellow.svg)](https://raw.githubusercontent.com/koushik4475/android-cipher/main/LICENSE)

### 🛡️ *Your Digital Vault for Unbreakable Security*

</div>

---

## 🌟 Project Overview

**Android Cipher** is a cutting-edge encryption application developed as a mini project at **University of Mysore, School of Engineering**. This powerful tool implements an **8-level cascading encryption system** using the robust **Blowfish algorithm**, providing military-grade security for your sensitive text and passwords.

```ascii
╔════════════════════════════════════════╗
║    🔒 → 🔐 → 🛡️ → 🔑 → 💎 → 🚀 → ⚡ → 🌟    ║
║         8 LEVELS OF ENCRYPTION         ║
╚════════════════════════════════════════╝
```

</div>

---

## ✨ Features

### 🔐 Core Capabilities
- **8-Level Encryption Cascade** - Multiple layers of security
- **Blowfish Algorithm** - Industry-standard encryption
- **Text Encryption** - Secure your messages
- **Password Protection** - Safeguard credentials
- **Easy Decryption** - Simple one-tap restore
- **Offline Security** - No internet required

</td>
<td width="50%">

### 🎨 User Experience
- **Intuitive Interface** - Clean, modern design
- **Fast Processing** - Instant encryption/decryption
- **Copy to Clipboard** - Easy sharing
- **Material Design** - Beautiful Android UI
- **Lightweight** - Minimal resource usage
- **No Ads** - Distraction-free experience

</td>
</tr>
</table>

---

## 📸 Application Screenshots

### 🔒 Encrypting Text

> *Transform plain text into an unbreakable cipher with a single tap*

---

### 🔓 Decrypting Encrypted Messages

<table>
<tr>
<td align="center">
<img width="280" alt="Decryption Step 1" src="https://github.com/user-attachments/assets/c1736464-d0f2-43c6-bc65-ac93955760b0" />
<br />
<sub><b>Step 1:</b> Enter Encrypted Text</sub>
</td>
<td align="center">
<img width="280" alt="Decryption Step 2" src="https://github.com/user-attachments/assets/0d40b2b4-6b82-47f1-9c14-27507c558a5e" />
<br />
<sub><b>Step 2:</b> Decrypt & Reveal</sub>
</td>
</tr>
</table>

> *Seamlessly decode your encrypted data back to its original form*

</div>

---

## 🔬 Technical Architecture

### 🧬 Blowfish Encryption System

```
Plain Text Input
      ↓
┌─────────────────┐
│   Level 1 🔐    │  ← Initial Blowfish Encryption
├─────────────────┤
│   Level 2 🔐    │  ← Key Rotation
├─────────────────┤
│   Level 3 🔐    │  ← Secondary Cipher
├─────────────────┤
│   Level 4 🔐    │  ← Hash Integration
├─────────────────┤
│   Level 5 🔐    │  ← Salting Process
├─────────────────┤
│   Level 6 🔐    │  ← Bit Scrambling
├─────────────────┤
│   Level 7 🔐    │  ← Final Encryption
├─────────────────┤
│   Level 8 🔐    │  ← Encoding Layer
└─────────────────┘
      ↓
Encrypted Output
```

### 🛠️ Technology Stack

![Android Studio](https://img.shields.io/badge/Android_Studio-3DDC84?style=for-the-badge&logo=android-studio&logoColor=white)
![Java](https://img.shields.io/badge/Java-ED8B00?style=for-the-badge&logo=openjdk&logoColor=white)
![XML](https://img.shields.io/badge/XML-E34F26?style=for-the-badge&logo=xml&logoColor=white)
![Gradle](https://img.shields.io/badge/Gradle-02303A?style=for-the-badge&logo=gradle&logoColor=white)

</div>

---

## 🚀 Getting Started

### Prerequisites

- Android Studio 4.0+
- JDK 8 or higher
- Android SDK (API Level 21+)
- Gradle 6.0+

### Installation

1. **Clone the repository**
```bash
git clone https://github.com/koushik4475/android-cipher.git
```

2. **Open in Android Studio**
```bash
cd android-cipher
# Open the project in Android Studio
```

3. **Build the project**
- Let Gradle sync and download dependencies
- Build > Make Project (Ctrl+F9)

4. **Run the application**
- Connect your Android device or start an emulator
- Run > Run 'app' (Shift+F10)

---

## 📱 Usage Guide

### Encrypting Text

1. Launch the **Android Cipher** app
2. Enter your text or password in the input field
3. Tap the **"Encrypt"** button
4. Copy the encrypted output to your clipboard
5. Store it securely or share as needed

### Decrypting Text

1. Open the app and switch to **Decrypt mode**
2. Paste or enter the encrypted text
3. Tap the **"Decrypt"** button
4. View your original message restored

---

## 🎓 Academic Context

### 🏛️ University of Mysore - School of Engineering

This project was developed as part of the curriculum at one of India's premier engineering institutions, demonstrating practical application of cryptographic principles in mobile computing.

**Discipline:** Computer Science & Engineering  
**Focus Area:** Mobile Security & Cryptography  
**Academic Year:** 2024-2025

</div>

---

## 👨‍💻 Developer

### **Koushik HY**
*AI Developer | Full Stack Developer | Android Enthusiast*

[![Portfolio](https://img.shields.io/badge/Portfolio-00D9FF?style=for-the-badge&logo=google-chrome&logoColor=white)](https://koushik4475.netlify.app)
[![Email](https://img.shields.io/badge/Email-D14836?style=for-the-badge&logo=gmail&logoColor=white)](mailto:koushik4475@gmail.com)
[![GitHub](https://img.shields.io/badge/GitHub-100000?style=for-the-badge&logo=github&logoColor=white)](https://github.com/koushik4475)
[![WhatsApp](https://img.shields.io/badge/WhatsApp-25D366?style=for-the-badge&logo=whatsapp&logoColor=white)](https://wa.me/919620968968)

📍 Karnataka, India  
🎓 Computer Science & Design - Mysore University School of Engineering  
💼 AI Developer | Passionate about Full-Stack Development & Mobile Applications  
📱 Contact: **+91 9620968968**  
🌐 Portfolio: **[koushik4475.netlify.app](https://koushik4475.netlify.app)**

</div>

---

## 🤝 Contributing

Contributions are what make the open-source community such an amazing place to learn, inspire, and create. Any contributions you make are **greatly appreciated**.

1. Fork the Project
2. Create your Feature Branch (`git checkout -b feature/AmazingFeature`)
3. Commit your Changes (`git commit -m 'Add some AmazingFeature'`)
4. Push to the Branch (`git push origin feature/AmazingFeature`)
5. Open a Pull Request

---

## 📄 License

Distributed under the MIT License. See `LICENSE` for more information.

---

## 🙏 Acknowledgments

- **University of Mysore** - For academic support and resources
- **Blowfish Algorithm** - Bruce Schneier for the encryption standard
- **Android Community** - For excellent documentation and support
- **Open Source Contributors** - For inspiration and guidance

---

### 🌟 If you found this project useful, please consider giving it a star!

[![Star this repo](https://img.shields.io/github/stars/koushik4475/android-cipher?style=social)](https://github.com/koushik4475/android-cipher)
[![Follow me](https://img.shields.io/github/followers/koushik4475?style=social)](https://github.com/koushik4475)

---

**Made with ❤️ and ☕ by [Koushik HY](https://koushik4475.netlify.app)**

</div>

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