Mindless_Consumer t1_jbc3kej wrote
Reply to comment by zalgorithmic 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
Most (all?) Steganogeaphy can be detected.
For example, one technique is to hide data in a jpeg. Open the file it looks like a regular image. Run the binary through a decryption process, get a secret message.
We may not be able to crack the message. But we can find out it is there. Then hit you until you decrypt it.
ImmoralityPet t1_jbckhzb wrote
That's what they're saying the advancement is here. The presence of the message is undetectable. The alterations that are done to the image are indistinguishable from other probabilistic filters that the file type is typically subjected to.
Mindless_Consumer t1_jbcnplo wrote
If true - its actually a big deal.
Consider a hostile universe and we need to send a signal across the galaxy, the presence of a signal alone is enough information to get you xenocided. Being about to mask the existence of a signal will be vital.
ImmoralityPet t1_jbcqx9l wrote
That's not what they're claiming though. The presence of a signal is known. The presence of a second message embedded in the signal is what is undetectable because the encoding process is embedded in probabilistic filters that the signal was subjected to anyway. And the output signal is indistinguishable from a signal that went through such a filter with no embedded message.
Mindless_Consumer t1_jbcs38u wrote
Yea. So match the signal to that of a local star or some other natural phenomenon.
The point is - if this is impossible which it may be. Long communication in a hostile galaxy may be impossible. If it is possible an explanation for not detecting signals is they are hidden and undetectable.
CrispyRussians t1_jbddq3v wrote
I love that you went right to space travel. I don't think this is applicable but I like where your mind is at
Mindless_Consumer t1_jbdfyzb wrote
Yea, like, I thought we were on futurology.
CrispyRussians t1_jbdg2sf wrote
I think the sun focuses more on the next 50-100 years not the next 1000
Mindless_Consumer t1_jbdggmu wrote
Like I said - its a big deal.
If it is actually hard undetectable, this is how we're going to do it. That's pretty cool.
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