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Questions tagged [steganography]

Steganography is the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message. While cryptography protects the contents of a communication, steganography aims to prevent others from learning that a communication even occurred.

Steganography is the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message. While cryptography protects the contents of a communication, steganography aims to prevent others from learning that a communication even occurred. The word steganography itself is of Greek origin and means "concealed writing" from the Greek words steganos (στεγανός) meaning "covered or protected", and graphei (γραφή) meaning "writing".

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What systems of robust steganography are out there?

By robust, I mean resistant to common image transforms (reversal, crop a non-multiple of 8 pixels off and recompress, blur, solarize to 64 levels, then interpolate, and sharpen, change compression levels, optimize for download, scale... Suppose…
Sherwood Botsford
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Why doesn't steganography increase the size of an uncompressed image?

So I have this question. I downloaded a .BMP off google due to .BMPs being not compressed. Just a 1024x768 .BMP image which its size os of 2.25Mb. I put the image in a steganography application.. inserted hidden text within it, encrypted and…
Matthew Goodlip
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Any efficient text-based steganographic schemes?

Sophisticated and efficient steganographic schemes with images as cover are available. However, I wonder: are there any that use texts as cover instead? If one could only transfer a few printable natural language texts due to constraints, using…
Mok-Kong Shen
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Perfect Steganography

History contain many example of old steganography. We also have digital steganography. Is there any kind of “Perfect Steganography”, in a sense that only the designer can extract the concealed message? Update Is there a (formal?) definition of…
kelalaka
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Maximum steganographic embedding rate not detectable by steganalysis?

When using advanced steganographic methods (like F5) what is the approximate maximum embedding rate when advanced Steganalysis (like a machine learning approach) can no longer reliably detect it? I have searched for papers dealing with this topic…
user3120921
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Digital identification using steganography, can it be broken?

Digital identification using steganography, can it be broken? I have read a few articles saying that using an I.D. embedded in video, audio, etc can help track down the origin of a copyright violation. OK, then they said it can't be broken, so I got…
Overloaded_Operator
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Making my steganography code more hard to detect and crack

I'm doing a college project about digital image steganography on MATLAB. So far i've been able to get the help i needed from cool guys on stackoverflow but i now need to make my algorithm more hard to detect. This is what i have so far: My main…
Ahmed Ihsan Tawfeeq
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Are there any practical methods of steganography?

There isn't a whole lot of information on steganography in the modern age, from what I can tell. A google search for steganography usually brings up a list of very impractical methods (e.g. tattooing a message on a guy's head then waiting for hair…
Daffy
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Which is the most secure steganography technique?

Just like we have AES in crypotography, which is the most secure technique in Steganography? I am looking for a technique in which the standard image characteristic modifications it does go undetected(as yet). This question is regarding image…
Jay
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What makes LSBit steganography detectable? And what would help in concealing it?

In a project of mine I took a 24-bit bitmap image and I performed LSBit steganography over it (saved a black and white image inside each of the planes R, G, B) using pixel shuffling and xor encryption. Is my stenography easy to detect? And what…
Ahmed Ihsan Tawfeeq
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Rating a steganographic system using Blum Blum Shub to locate hidden bits

Currently I'm building a toy steganography system based in a web browser. Besides all the obvious issues with building a system requiring extreme privacy into a browser (this is a toy!), I was curious if there were any serious flaws to the basic…
Everlag
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Would this image steganography technique be effective at avoiding detection?

I've observed that when you view only the LSB of an image it is typically random looking, but often has areas that correlate with the over all structure of the image. It's common for there to be large sections of the image that are solid 1s or 0s.…
Chris_F
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ASCII characters in an image steganography

Given an image size of 300 by 400, what is the maximum number of ASCII characters (7 bits) that can be embedded using the LSB steganography? I would assume that every pixel can perform an LSB so would that mean 300x400 bits change? I should then…
user73481
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Is steganography valid only for digital images or also for printed images?

If I embed some information in an image using steganography and then I print that image, will I be able to retrieve information from the printed image or not?
Rahul Savsani
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Can one hide a text in an image and then hide that image in another image?

Using a steganographic algorithm like least significant bit, can one hide a text in an image and then hide that image in another image?
Paps Jhon
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