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First of all, what you are asking for is not steganography, it's watermarking. Steganography is the art of hiding information within normal data. There you do not disclose that you are sending hidden information and you want to be immune to statistical analysis. The goal of steganography is to hide in the mass of data, without someone being able to pinpoint ...


3

Steganography is about concealing information in a medium (e.g. pictures) in a way that people who look at the medium are unaware of the presence of that information. What you want is something else called watermarking: how to embed some information which is hard to remove. A good watermark does not alter (too much) the medium in the eyes of onlookers, but ...


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I don't know any standard techniques, but the closest I can think of is the folowing: If Bob has a public key publicly available, Alice can use it to encrypt the secret message, then send him a link to a specific, detailed stenography technique, in the "hey, look what's interesting" spirit, applying that same technique for embedding the encrypted secret in ...


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Yes. You have only been searching for the wrong term. This is called subliminal channel.


13

This is the first I've heard of keyed steganography, so I'll recap the article you linked, for the benefit of others who might be confused about it. They have narrowed down the number of steganographic algorithms they're analyzing quite a bit. The message must be embedded in a JPEG image (perhaps any raster image format?), and it can't utilize the entire ...


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How about this: Encrypt message with random symmetric key. Check randomness of resulting cyphertext, if it is distinguishable from noise, try another random key. Encrypt key with public-key of Bob Hide encrypted key + message with steganography. When the eavesdropper intercepts the message and uses steganography, he will only get the encrypted message ...


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A cyphertext generated with a proper encryption algorithm is indistinguishable from random noise. That means with most steganography methods, cyphertext might be harder to detect than paintext, because statistic analysis does not work. However, the details depend on the steganography method used. Implementations vary greatly. For example, it might be ...


6

"One of the draw backs of traditional steganography is that both parties need to exchange a secret key." No, steganography does not require any key (symmetric or asymmetric) as it doesn't use encryption at all. The real drawback of steganography it's that it is just security by obscurity; you hope the adversary won't discover the hidden message (or that ...


23

One of the draw backs of traditional steganography is that both parties need to exchange a secret key. Don't infer from the implementation of one specific tool to the limits of steganography itself. Steganography is just the hiding of information within other data. It does not matter if the information you want to hide by itself are unencrypted, rot13, ...


2

You've got a plaintext that you want to send me. Encrypt it with my public key first to generate the ciphertext. Then, using absolutely standard steganography interleave the bits of the ciphertext into the carrier: images, music, and so on. Had you not used public-key encryption then you'd just intermingle the plaintext into the carrier. To the steganograpy ...



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