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Hiding data in images using steganography techniques

The Kotlin program, based on steganography methods, for hiding information in images using the Least Significant Bit (LSB) and Discrete Cosine Transform (DCT) methods.

Requirements

Build project

➜  stego-image-hiding: gradle build
➜  ...
➜  stego-image-hiding: gradle jar

Usage

usage: java -jar stego-image-hiding.jar -e|-d -m METHOD -s IMAGE [-r IMAGE] [-t TEXT_FILE] [-k KEY_FILE]

optional arguments:
  -d           : extract message
  -e           : embed message
  -s IMAGE     : source image
  -r IMAGE     : result image
  -m METHOD    : DCT or LSB
  -k KEY_FILE  : binary key file [required for DCT]
  -t TEXT_FILE : secret message

Examples

DCT

  • Embedding 
    ➜  java -jar stego-image-hiding.jar -e -m DCT -s src.bmp -r res.bmp -t text.txt -k key.txt
  • Extracting 
    ➜  java -jar stego-image-hiding.jar -d -m DCT -s res.bmp -k key.txt

LSB

  • Embedding 
    ➜  java -jar stego-image-hiding.jar -e -m LSB -s src.bmp -r res.bmp -t text.txt
  • Extracting 
    ➜  java -jar stego-image-hiding.jar -d -m LSB -s res.bmp

License & copyright

Licensed under the MIT-License.