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| 17:19.25 | wpwrak | djb is fun: "There are many choices of elliptic-curve signature systems. The standard choice, ECDSA, is reasonable if you don't care about simplicity, speed, and security." |
| 17:21.13 | eintopf | wpwrak: I heard that you should not trust NIST curves |
| 17:21.58 | eintopf | because they work together with NSA, etc :-/ |
| 17:22.29 | eintopf | so big companies says "oh yes we use NIST curve xy, it's a well known standard curve" |
| 17:22.41 | eintopf | but real users should not trust them :-/ |
| 17:24.04 | wpwrak | hmm, i think he may go beyond just NIST curves. but i have to admit that i haven't carefully read let alone understood the article: http://blog.cr.yp.to/20140323-ecdsa.html |
| 17:28.31 | eintopf | wpwrak: I had a course about cryptography at my university and I don't know nothing about cryptography for sure |
| 17:30.30 | eintopf | but what I learned was that the deffie hellman algorithm on in german "Restklassenring"(some algebra with modulo and such things) can be adapted on elliptic-curve algebra |
| 17:31.01 | eintopf | and then some algorithmn to crack deffie hellman is more complex by doing it on elliptic-curve algebra |
| 17:31.13 | wpwrak | ECDH. About 268,000 results (0.46 seconds) :) |
| 17:32.16 | eintopf | ah, the problem to crack Deffie hellman is discrete logarithmn |
| 17:32.42 | eintopf | https://de.wikipedia.org/wiki/Index-Calculus-Algorithmus - that was the algorithmn which you can't easily use in elliptic-curve |
| 17:33.00 | eintopf | something like that |
| 17:34.17 | wpwrak | ah i understand it, the main advantage of EC is that you need a lot fewer bits for the same kind of operations |
| 17:35.28 | wpwrak | e.g., RSA is getting ridiculous, with keys sometimes getting as large as 1 kB (well, that's still mainly for the tin-hat faction, but the rest is just 1-2 binary orders of magnitude behind) |
| 17:36.10 | eintopf | yes, that's why it's interessting for mcu's |
| 17:36.16 | eintopf | smartcards |
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