Steganography??

[blueb]

I happened to visit the 'ars technica' web site and read an article that I found quite interesting....

It talked about 'Steganography' which I didn't know anything about.

http://arstechnica.com/business/news/20 ... -video.ars


A little googling found....

http://www.garykessler.net/library/steganography.html


Apparently you can do this with MP3 files as well.

Anyone done anything like this with PureBasic?

--blueb

[Thorium]

Yes i did this for image files. Worked only on image formats with lossless compression. It was very easy it just used the least significant bit of every pixel to store data. On 32bit or 24bit images you woundnt notice the difference if you looked at it with a image viewer.

[Mohawk70]

Yes i did this for image files. Worked only on image formats with lossless compression. It was very easy it just used the least significant bit of every pixel to store data. On 32bit or 24bit images you woundnt notice the difference if you looked at it with a image viewer.

When using steganography I would suggest encrypting the data before embedding it in the image - especially using the above method.

There are tools to detect steganography. Just Google steganalysis !

[Zach]

Dissidents in Iran have been using this for a while too, although they were warned it was not very secure.