🖼️ Image Steganography Tool
A Python-based image steganography application that hides secret data within images using two different techniques: MSB-based image hiding and LSB-based text encoding.

🎯 Overview
Image steganography is the art of hiding information within images without noticeably altering their appearance. This project implements two distinct approaches:
Image-in-Image Hiding: Conceals one image within another using MSB (Most Significant Bit) technique
Text-in-Image Hiding: Embeds secret text messages using LSB (Least Significant Bit) technique

✨ Features
🔐 Image-in-Image Steganography
✅ Hides one image inside another of the same dimensions
✅ Uses 4 MSBs from both images for seamless blending
✅ Produces a single encrypted image containing both images
✅ Basic decryption with random bit padding

📝 Text-in-Image Steganography
✅ Encodes text messages into image pixels
✅ Uses LSB technique for minimal visual impact
✅ Automatic capacity calculation
✅ Stop sequence for reliable decoding
✅ Support for various data types (strings, bytes, integers)

🛡️ Security Features
✅ Visual imperceptibility
✅ Data integrity validation
✅ Automatic stopping criteria
✅ Error handling for insufficient capacity

🧠 Techniques
Technique 1: MSB-based Image Hiding
Method: Combines 4 MSBs from both source and secret images
Output: Single image containing both images
Usage: encrypt() and decrypt() functions
Best For: Hiding images within images
Technique 2: LSB-based Text Hiding
Method: Replaces least significant bits of RGB values with secret data
Output: Encoded image with hidden text
Usage: encode() and decode() functions
Best For: Hiding text messages within images