Steganography (How to Hide Text into Image).

🔐 𝐇𝐢𝐝𝐢𝐧𝐠 𝐚 𝐓𝐞𝐱𝐭 𝐅𝐢𝐥𝐞 𝐈𝐧𝐬𝐢𝐝𝐞 𝐚𝐧 𝐈𝐦𝐚𝐠𝐞 (𝐒𝐭𝐞𝐠𝐚𝐧𝐨𝐠𝐫𝐚𝐩𝐡𝐲) 🎯 Objective: Embed a text file (Hide.txt) into an image file (Test.png) using basic command-line operations. 📁 Files Used: 𝐇𝐢𝐝𝐞.𝐭𝐱𝐭– The text file to hide 𝐓𝐞𝐬𝐭.𝐩𝐧𝐠 – The image file to use as a cover 🧩 𝗦𝘁𝗲𝗽 𝟭 - 𝗖𝗼𝗻𝘃𝗲𝗿𝘁 𝗧𝗲𝘅𝘁 𝘁𝗼 𝗭𝗜𝗣 Compress Hide.txt into a ZIP archive. Delete the original text file if desired. You now have: Hide.zip 🔐𝙉𝙤𝙬 𝙃𝙞𝙙𝙚.𝙯𝙞𝙥 𝙘𝙤𝙣𝙫𝙚𝙧𝙩𝙞𝙣𝙜 𝙖𝙨 𝙋𝙖𝙨𝙨𝙬𝙤𝙧𝙙-𝙋𝙧𝙤𝙩𝙚𝙘𝙩𝙚𝙙 𝙕𝙄𝙋 𝙁𝙞𝙡𝙚 ✅ Using WinRAR or 7-Zip (GUI) WinRAR Steps - ✍ Right-click on Hide.zip → Select "Add to archive…" ✍ In the General tab, set archive name as Hide.7z ✍ Click Set Password… 👉 Enter and confirm your password 👉 Click OK → Your password-protected Hide_2.7z is created. 🧠 𝗦𝘁𝗲𝗽 𝟮 - 𝗠𝗲𝗿𝗴𝗲 𝗭𝗜𝗣 𝘄𝗶𝘁𝗵 𝗜𝗺𝗮𝗴𝗲 Open Command Prompt in the directory containing both Test.png and Hide_2.7z Run the following command: 𝗰𝗼𝗽𝘆 /𝗯 𝗧𝗲𝘀𝘁.𝗽𝗻𝗴 + 𝗛𝗶𝗱𝗲.𝟳𝘇 𝗛𝗶𝗱𝗱𝗲𝗻.𝗽𝗻𝗴 This creates a new image: Hidden.png 🕵️ 𝗦𝘁𝗲𝗽 𝟯 - 𝗘𝘅𝘁𝗿𝗮𝗰𝘁 𝘁𝗵𝗲 𝗛𝗶𝗱𝗱𝗲𝗻 𝗙𝗶𝗹𝗲 Hidden.png will behave like a normal image. But if you rename it to: 𝙃𝙞𝙙𝙙𝙚𝙣.7𝙯 𝙸𝚏 𝚝𝚑𝚎 𝚏𝚒𝚕𝚎 𝚎𝚡𝚝𝚎𝚗𝚜𝚒𝚘𝚗 𝚠𝚒𝚝𝚑 .𝚣𝚒𝚙 𝚝𝚑𝚎𝚗 𝚌𝚑𝚊𝚗𝚐𝚎 𝚒𝚗𝚝𝚘 .𝚛𝚊𝚛 𝚝𝚑𝚎𝚗 𝚢𝚘𝚞 𝚐𝚎𝚝 𝚝𝚑𝚎 𝚝𝚎𝚡𝚝 𝚏𝚒𝚕𝚎. Then open it using WinRAR, 7-Zip, or any archiver - you’ll see password Protected Hide.txt inside with zip file. 𝐘𝐨𝐮 𝐞𝐧𝐭𝐞𝐫𝐞𝐝 𝐭𝐡𝐞 𝐏𝐚𝐬𝐬𝐰𝐨𝐫𝐝 𝐚𝐧𝐝 𝐘𝐨𝐮 𝐜𝐚𝐧 𝐠𝐞𝐭 𝐭𝐡𝐞 𝐭𝐞𝐱𝐭 𝐅𝐢𝐥𝐞. ✅ Conclusion: This technique works by appending ZIP data to the end of a valid image file. The image remains viewable, while archiving tools recognize the embedded ZIP structure. 💡 𝗧𝗵𝗶𝘀 𝗶𝘀 𝗮 𝗯𝗮𝘀𝗶𝗰 𝗳𝗼𝗿𝗺 𝗼𝗳 𝘀𝘁𝗲𝗴𝗮𝗻𝗼𝗴𝗿𝗮𝗽𝗵𝘆 - 𝗴𝗿𝗲𝗮𝘁 𝗳𝗼𝗿 𝗱𝗲𝗺𝗼𝗻𝘀𝘁𝗿𝗮𝘁𝗶𝗼𝗻𝘀, 𝗖𝗧𝗙𝘀, 𝗼𝗿 𝗹𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗽𝘂𝗿𝗽𝗼𝘀𝗲𝘀!