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It's always kind of cute to see ridiculous headlines roll through. Taking a look at the paper and a stream of thought about it. - Researchers are affiliated w
by pnathan 13y ago
It's always kind of cute to see ridiculous headlines roll through.
Taking a look at the paper and a stream of thought about it.
- Researchers are affiliated with a university they aren't kooks
- These are physicists. They speak a different language. That will make decoding this paper difficult. It may have useful insight, but it is obscured by the jargon of a different discipline. Typically I haven't see continuous diffeq in crypto. >.>
- Essentially I believe this is a two-directional stream cipher, with prior clear?crypt?text from both sides feeding into the input.
- I'm not sure what unbounded precisely is being meant here with their coupling function.
- Almost zero crypto papers cited (I counted two, and they sounded fringe-y by title and were also published in physics journals).
Several key aspects have been neglected by the authors:
- Lack of citation of the current state of crypto- they betray nearly no understanding of the terminology of crypto nor present the contribution to the field in relation to the field.
- No analysis of the information-theoretic leakage of the communication system.
- No analysis of keyspaces, expected break time for chosen|known ciphertext, etc.
My take on it is that it's a well-intentioned but largely useless paper by non-experts. If they took the time to understand the field, it might have some valuable insights.
I would guess the coupling function as an idea results in a system design that leaks information like a sieve about both Alice and Bob. It might be a restatement of something like switching keys periodically, but I lack the vocab to interpret.
- rcxdude 13y agoI think by unbounded they meant 'you can stick any number of arbitrarily complicated functions here'. I'm not sure whether this is any different in practice from just upping the key size on a cipher (since any implementation will be limited by at least memory used to represent the functions).