steganography

I built a Python steganographer that hides UTF-8 text in images and it works fine for it. I was wondering if I could encode complete files in images. For this, the program needs to read all kinds of files. The problem is that not all files are encoded with UTF-8 and therefore, you have to read them with: file = open('somefile.docx', encoding='utf-8', errors='surrogateescape') and if you copy it to a new file and read them then it says that the files are not decipherable. I need a way to read all kinds of files and later write them so that they still work. Do you have a way to do this in Python

I'm working on a project where I edit the pixels of a jpg in PHP using the GD library. Its very crucial and key to my project that the output from PHP retains the pixel values I set (cough-steganography-cough). This is the first time I've attempted image manipulation in PHP. I've had no problems before in my Java implementations, so I was foolish not to investigate GD's jpeg compression quality before pursuing further. It turns out that after all my effort, my code does not function the way its supposed to. I am pretty sure it is not my code (tested the encode and decode functions on edited

Closed. This question is off-topic . It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I am new to image processing, please suggest some good resources(Books and Weblinks) for learn image processing(best for steganography analysis) in java for beginner as well as advance level. I have seen documentation provided by oracle, but I want some tutorials and books which focus on the practical environment used in the current development in industries. Thanks!! Image processing is an extensive field with

I have to embed text in an encrypted image(Stegnography). I googled and found codes for embedding text in an image. But I have to encrypt image at first and embed text in this encrypted image. My tries are as follows. /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package tbn; import java.awt.Graphics2D; import java.awt.Point; import java.awt.Transparency; import java.awt.image.BufferedImage; import java.awt.image.ColorModel; import java.awt.image.ComponentColorModel; import java.awt.image.DataBuffer; import java.awt.image.DataBufferByte;

So, to simplify my life I want to be able to append from 1 to 7 additional characters on the end of some jpg images my program is processing*. These are dummy padding (fillers, etc - probably all 0x00) just to make the file size a multiple of 8 bytes for block encryption. Having tried this out with a few programs, it appears they are fine with the additional characters, which occur after the FF D9 that specifies the end of the image - so it appears that the file format is well defined enough that the 'corruption' I'm adding at the end shouldn't matter. I can always post process the files later