Steganography

[TarsierSpectral]

I had a bmp file in which I hid a txt file. Anybody know why the resulting file is only bigger by 2 bits than the original file? Or at least what the extra bits are?

Thanks

 

[Grenage]

There is generally a lot of redundant data in an image, especially when you are dealing with ? 24-bit RGB images. It will vary depending on the image type, size, etc.

Carlsberg don't run I.T. departments, but if they did they'd probably be more fun.

 

[TarsierSpectral]

but what are those extra bits? both bitmaps are the same

 

[Grenage]

Perhaps the key? Or it was not possible to fit it all in?

Carlsberg don't run I.T. departments, but if they did they'd probably be more fun.

 

[TarsierSpectral]

where would it get the key from?

 

[Grenage]

Doesn't hiding a file inside an image generally give you a key/password?

Carlsberg don't run I.T. departments, but if they did they'd probably be more fun.

 

[TarsierSpectral]

no

 

[eyec]

text was too large for the format. that is how most steg files are discovered.