5 ms·
Or more simply, just MD5 them from two machines and see if the hashes (and sizes) match. It is actually quite hard to find hidden text in "random" images. Quite
by UnoriginalGuy 12y ago
Or more simply, just MD5 them from two machines and see if the hashes (and sizes) match. It is actually quite hard to find hidden text in "random" images. Quite easy to tell if they're identical always however...
- DanBC 12y agoMost steganography is trivially easy to detect. Good steganography needs a lot of cover data and better systems than manipulating the LSB.
- nitrogen 12y agoIf the distribution of bits in an encrypted stream is indistinguishable from normal image dithering, wouldn't encrypted steganography be hard to detect? It wouldn't survive any lossy image transformations, though.
- MichaelGG 12y agoSteganography on normal pictures. If the picture is just random pixels then it would not be detectable.
- DanBC 12y agoRandomness is something that cryptographers have spent a lot of time studying. Introducing non-random data into a random data stream is easy to find unless you're very careful about the amounts of data-to-be-hidden and cover-data.
- MichaelGG 12y agoIf you encrypt the data first, then you're inserting "random" data as far as analysis goes.
- hamed_benz 12y agosalam