Good introductory read (bitmap steganography).

[Paddington_Bear]

Found a publicly released Air Force document on bitmap steganography. It starts off very basic and covers a good range of details.

http://stinet.dtic.mil/oai/oai?verb=get ... =ADA361584

The pages links to the pdf file ( http://handle.dtic.mil/100.2/ADA361584 ).

It's a great jumping off point for someone with no steganalysis experience (like myself). Now I actually have half a clue as to what I'm doing.

[TheMindRapist]

Nice find

[comperr]

Whomever makes one of each of those stegos for HTS

[HertzRST]

Ho can tell me what program to use to find if there is encrypted or hidden data in a picture and what program to use to separe 2 pictures that are combined and it's resulting only one picture,i mean 2 in 1.How can i separe them.Thanks!

[bojazz]

thx for sharing, it is a great introduction to steganography for a noobie like mi

[HertzRST]

Where could i get a software to compare visually two pictures and show me the differences between them from?

[f3jk3r]

Another fine link regarding this topic: http://www.fbi.gov/hq/lab/fsc/backissu/july2004/research/2004_03_research01.htm

And another: http://www.owlnet.rice.edu/~elec301/Projects01/smokey_steg/steg.html

[tio]

Where could i get a software to compare visually two pictures and show me the differences between them from?

you can make it yourself, for example

Code: Select all

for(i=0; i<image1.height; i++){
          for(j=0; j<image1.width; j++){
                     if(image1.pixel[i,j] <> image2.pixel[i,j]){
                             dosomethink();
                     }
          }
}

[somand]

Where could i get a software to compare visually two pictures and show me the differences between them from?

you can make it yourself, for example

Code: Select all

for(i=0; i<image1.height; i++){
          for(j=0; j<image1.width; j++){
                     if(image1.pixel[i,j] <> image2.pixel[i,j]){
                             dosomethink();
                     }
          }
}

really good advice !

[sniper15]

yeah im not thinking that anyone who is asking for programs to finish the challenges is really going to understand you code. but nice try and there is nothing wrong with doing it that way but i would skip the double for loop as it would waste unnecessary run time. we are talking milliseconds here but i like to make them as fast as possible... lol handle the width and height data when you pass the rest of the picture data in. but its obvious that your program wasn't made to work so its what ever lol...

-sniper15