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Mathematician warns NSA may be weakening next-gen encryption
(www.newscientist.com)
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this post was submitted on 19 Oct 2023
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There is no such thing as unbreakable encryption. If you want to hide a message, hide it at the source with the way you phrase things. I still have to buy weed illegally, and I use Signal, but I don't tell the person I buy it from, "hey, I want a half-ounce of weed and I'll pick it up on Friday at 2 pm," I say something like, "hey, are you free this weekend?" And then they'll say something like, "yeah, do you want to get your usual thing?" and then we'll arrange a time.
And yes, I see the irony about talking about buying weed illegally when someone could potentially find out who I am on Lemmy.
True encryption does exist, it's just that the encryption key is equally as long as the message itself which shows how impractical it is: if you have a method secure enough to send an encryption key of length X, why not just send the actual message of length X?
That's interesting. I've never heard that before. Do you have more information I can read about somewhere?
https://en.m.wikipedia.org/wiki/One-time_pad
Is that what they're talking about?
Yes
But one-time pads aren't impractical like they said?
One-time pads are impractical because the sender and the target need to meet up beforehand and agree on a code, and no one else should know this code. With modern encryption, this is not necessary. The target can come up with both the encryption and decryption algorithms, and send only the first to the sender publicly.