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HELP: Hiding files(any type such .doc,.txt etc) inside an Image file(preferbly jpg) aka Steganography
I am trying to make a GUI Java Program, where a file will be hidden inside an image file.
So I have a rough idea which is as follows:
Encryption
- Read an image file and a file(say file-2)
- Modify the code of image file, we modify the LSB(Least Significant Bit)
- The LSB's are replace with the code of the file-2
- A new image file is created.
I want to first get the Encryption part clear.
So guys help me...
Related threads:
Re: HELP: Hiding files(any type such .doc,.txt etc) inside an Image file(preferbly jpg) aka Steganography
Can you explain what type of encryption you are doing to the input file before its bits are inserted into the image?
What kind of image file are you thinking of using? Does it preserve all the bits for the pixels of the image over reads and writes? For example, I think a jpeg image's pixels can be changed every time the image is written.
If you don't understand my answer, don't ignore it, ask a question.
Re: HELP: Hiding files(any type such .doc,.txt etc) inside an Image file(preferbly jpg) aka Steganography
Sorry my mistake! I shouldn't have written 'encryption', instead I should have written Hiding.Can you explain what type of encryption you are doing to the input file before its bits are inserted into the image?
No encryption, just writing the bits of file-2 to image file using LSB so that there is negligible difference from the original (image file).
For convenient I am thinking of jpeg, and I want to alter the bits for the pixels using LSB for negligible difference.What kind of image file are you thinking of using? Does it preserve all the bits for the pixels of the image over reads and writes? For example, I think a jpeg image's pixels can be changed every time the image is written.
Also I am also wondering what size of file-2 can a 1920x1200 px jpeg accommodate?
Re: HELP: Hiding files(any type such .doc,.txt etc) inside an Image file(preferbly jpg) aka Steganography
To make sure the writing of a jpeg image doesn't change any of its contents, write a test program that reads and saves in memory the pixels from an image and then writes it and reads it back and compares the saved pixels with those read in to see if there were any changes made.
If one bit/pixel then divide the number of pixels by the number of bits / bytewhat size of file-2 can a 1920x1200 px jpeg accommodate
If you don't understand my answer, don't ignore it, ask a question.
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