Digital Watermarking To Hide Text Messages

Download Document/Synopsis

Here we proposed a system where you can hide information or text messages in images. For this we will be using digital watermarking methodology to hide the text messages in digital media. Watermarking technique has recently developed for image watermarking and it can be used to embed the information into image and can be efficiently extract back the information. In this system we will be working with files in matlab like writing or reading file. User will upload the image and will enter text message which will be encrypted with image. For this we convert text to 16 bit numbers for proper calculation. Encrypt the text messages with image through encrypting loop. System will write the encrypted data as pixels in image. For decryption system will read the encrypted image and will further read non encrypted image. System will convert image values into 16 bit values. Finally system will apply decrypting loop to decrypt text from image. The proposed system is implemented in MATLAB.



Advantages
  • User can upload image with any image format
  • Message will remain secured
Disadvantages
  • There is no secret key concept in this methodology
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