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hxckrt t1_jbcam1y wrote

Reply to comment by volci in A group of researchers has achieved a breakthrough in secure communications by developing an algorithm that conceals sensitive information so effectively that it is impossible to detect that anything has been hidden by thebelsnickle1991

Perfectly secure here means someone who knows the exact distribution of the covertext. It's not about cryptography.

I believe this is the paper:

https://www.researchgate.net/publication/364777247_Perfectly_Secure_Steganography_Using_Minimum_Entropy_Coupling

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volci t1_jbcb4fa wrote

Except...you can't know who all has gotten copies

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hxckrt t1_jbcj6ly wrote

That's like saying one time pads are not secure because you don't know who has the key. It's about how you model it.

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