Insider

<img src="app/src/main/ic_launcher-playstore.png" align="left" width="200" hspace="10" vspace="10">

Insider is an app which hide and retrieve encrypted text data in image. It basically is an implementation of <a href="https://en.wikipedia.org/wiki/Steganography">steganography</a> using <a href="https://en.wikipedia.org/wiki/Advanced_Encryption_Standard">AES encryption</a>.

Insider app can be downloaded by the drive link below. Try it!!

<p align="left"> <a href="https://drive.google.com/file/d/1OsfUVFabUzfKgaw6JqVGBSOXZm_e4OcX/view?usp=sharing"> Click here for drive link </a> </p>

About

Insider can hide the text given in the provided image and that image user can send to anyone freely. The same image can be decrypted and data/text can be retrieved from it using this app.

Working

Encryption-

• Inputs-Key of 16 digits, Text (to be hidden), Image (in which text to be hidden)
• Text converted to bytearray and feed to AES encryption using android encryption library.
• Encrypted text in form bytearray converted to Base64 encoding
• Each chr of base64 string converted to binary value and combined as string with terminating string on both side.
• The binary string then inserted in the image using <a href="https://www.google.com/search?client=firefox-b-d&q=lsb+method+of+steganography">LSB method</a>.
• The final image can be shared now.

Decryption-

• Inputs- Key of 16 digits(the same that used for encryption),Image(in which data is hidden)
• Binary data extracted from the pixels of image just by reversing the LSB method process.
• Binary string converted back to base64 string and base64 string again decoded to bytearray.
• Bytearray feed to the AES algo and by using the key the data is decrypted.
• The final decrypted bytearray converted to text(utf-8) and displayed on screen.

Features

The android app lets you:

• Hide your secret text in any image.
• The image can be shared to anyone without other getting the hint about it
• The shared image can be decoded back to get the hidden text
• Can be used for both- fun or security purposes:)

Screenshots

<img src="/readme/Screenshot_1604311008.png" align="left" width="200" hspace="10" vspace="10"> <img src="/readme/Screenshot_1604311219.png" align="left" width="200" hspace="10" vspace="10">

<img src="/readme/Screenshot_1604311262.png" align="center" width="200" hspace="10" vspace="10">

❤️ Project Admin

<table> <tr> <td align="center"> <a href="https://github.com/Shyguy99"> <img src="https://avatars1.githubusercontent.com/u/47186922?v=4" width="100px" alt=""/><br /> _{<b>Shyguy99</b>} </a><br/> <a href="https://github.com/Shyguy99/Insider/commits?author=Shyguy99"> 👑 💻 👀 💬 Author </a> </td> </tr> </table>

Open Source Events

This project is a part of DevScript Winter of Code-DWoC. Winter of Code is an open source program envisioned by DevScript that helps understand the paradigm of Open Source contribution. For more details, you can check out this link

<p align = "center"><img src = "dwoc.png" alt = "DWoC Logo" height=200px></p>

🌟 Contributors

Thanks goes to these wonderful people ✨✨:

<table> <tr> <td> <a href="https://github.com/Shyguy99/Insider/graphs/contributors"> <img src="https://contrib.rocks/image?repo=Shyguy99/Insider" /> </a> </td> </tr> </table>

Contact

For any query you can contact me via email <a href="">readytouse99@gmail.com</a> or if you have any contribution for the project you are welcome.