🖼 Image Encryption Suite

Secure Image Encryption Web Application with Modern Cryptographic Standards

A Flask-based web application for encrypting and decrypting images using industry-standard cryptographic algorithms.

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⚡ Overview

This project demonstrates how modern encryption techniques can be applied to multimedia data such as images.

It supports secure encryption, decryption, and key derivation using strong cryptographic primitives.

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🔐 Supported Algorithms

• AES-256-GCM (Authenticated Encryption)
• AES-256-CBC
• AES-256-CTR
• ChaCha20-Poly1305

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🚀 Features

✅ Upload and encrypt images via web UI
✅ Decrypt images securely
✅ Password-based key derivation (PBKDF2)
✅ Random salt and IV/nonce generation
✅ Clean Flask-based interface

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🛡 Security Design

• PBKDF2-HMAC-SHA256 (100k iterations)
• Unique salt per encryption
• Secure IV/nonce handling
• AEAD support for integrity validation

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🖥 Setup

pip install -r requirements.txt
python app.py

Open:

http://localhost:5000

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📂 Structure

image_cipher_app/
├── app.py
├── cipher.py
├── templates/
└── static/

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🎯 Use Cases

• Secure file storage demos
• Cryptography learning projects
• Data protection prototypes

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Encrypt. Protect. Visual Data Security.