{"id":46044527,"user":"philodeon","time":1764067110,"time_ago":"4 days ago","type":"comment","content":"

https://bada55.cr.yp.to/bada55-20150927.pdf","comments":[{"id":46044997,"user":"philodeon","time":1764072003,"time_ago":"4 days ago","type":"comment","content":"

There’s also a more approachable set of slides on the topic at https://cr.yp.to/talks/2025.11.14/slides-djb-20251114-safecu...","comments":[{"id":46048318,"user":"tptacek","time":1764092347,"time_ago":"3 days ago","type":"comment","content":"

What do you think of those slides?","comments":[{"id":46048689,"user":"philodeon","time":1764093998,"time_ago":"3 days ago","type":"comment","content":"

I didn’t see anything “batshit” in either the paper or the slides.","comments":[{"id":46048701,"user":"tptacek","time":1764094047,"time_ago":"3 days ago","type":"comment","content":"

Say more. What do you think of his argument? I paraphrased it downthread. Do you think I did so accurately? If not: what did I get wrong?","comments":[{"id":46048851,"user":"philodeon","time":1764094740,"time_ago":"3 days ago","type":"comment","content":"

At least in terms of the Bada55 paper, I think he writes in a fairly jocular style that sounds unprofessional unless you read his citations as well. You seem to object to his occasional jocularity and take it as prima facie evidence of him being “batshit”. Given that you are well known for a jocular writing style, perhaps you should extend some grace.

The slides seem like a pretty nice summary of the 2015-era SafeCurves work, which you acknowledge elsewhere on this site (this thread? They all blend together) was based on good engineering.","comments":[{"id":46049399,"user":"tptacek","time":1764097390,"time_ago":"3 days ago","type":"comment","content":"

No, what I'm saying has only to do with the substance of his claims, which I now think you don't understand, because I laid them out straightforwardly (I might have been wrong, but I definitely wasn't making a tone argument) and you came back with this. People actually do work in this field. You can't just bluster your way through it.

This is a "challenge" with discussing Bernstein claims on Hacker News and places like it --- the threads are full of people who know two cryptographers in the whole world (Bernstein and Schneier) and axiomatically derive their claims from "whatever those two said is probably true". It's the same way you get these inane claims that Kyber was backdoored by the NSA --- by looking at the list of authors on Kyber and not recognizing a single one of them.

What do you think about Bernstein's arguments for SNTRUP being safe while Kyber isn't? Super curious. I barely follow. Maybe you've got a better grip on the controversy.","comments":[{"id":46050317,"user":"philodeon","time":1764102306,"time_ago":"3 days ago","type":"comment","content":"

I’m not sure why you’re hung up on SNTRUP, since DJB didn’t submit it past round 2 of NISTPQC. In round 3, DJB put his full weight behind Classic McEliece.

You’ve previously argued that “cryptosystems based on ring-LWE hardness have been worked on by giants in the field since the mid-1990s” and suggested this is a point in Kyber’s favor. Well, news flash, McEliece has been worked on by giants in the field for 45 years. It shows up in NSA’s declassified internal history book, though their insights into the crypto system are still classified to this day.","comments":[{"id":46050335,"user":"tptacek","time":1764102416,"time_ago":"3 days ago","type":"comment","content":"

How long do you think people have been working on lattice cryptography?","comments":[{"id":46050533,"user":"philodeon","time":1764103448,"time_ago":"3 days ago","type":"comment","content":"

Lattices themselves have been analyzed since the days of Gauss. Lattice cryptography is only a couple decades old (in the unclassified literature).

The first proposed lattice-based cryptosystem was completely broken within 2 years of its announcement, which is an lovely harbinger of Kyber’s fate.","comments":[{"id":46050553,"user":"tptacek","time":1764103540,"time_ago":"3 days ago","type":"comment","content":"

That's a funny claim given NTRU goes back to 1996 and was a PQC finalist. I barely know what I'm talking about here and even I think you're bluffing your way through this. At this point you're making arguments Bernstein would presumably himself reject!","comments":[{"id":46060168,"user":"tptacek","time":1764179043,"time_ago":"2 days ago","type":"comment","content":"

Since you've been very strident throughout this thread I'm wondering if you're going to have a response to this. Similarly, I'm curious, as a scholar of Bernstein's cryptography writing --- did the MOV attack (prominently featured on Safecurves) serve as a lovely harbinger of the failure of elliptic curve cryptography?","comments":[],"comments_count":0,"level":10,"url":"item?id=46060168"}],"comments_count":1,"level":9,"url":"item?id=46050553"}],"comments_count":2,"level":8,"url":"item?id=46050533"}],"comments_count":3,"level":7,"url":"item?id=46050335"}],"comments_count":4,"level":6,"url":"item?id=46050317"}],"comments_count":5,"level":5,"url":"item?id=46049399"}],"comments_count":6,"level":4,"url":"item?id=46048851"}],"comments_count":7,"level":3,"url":"item?id=46048701"}],"comments_count":8,"level":2,"url":"item?id=46048689"}],"comments_count":9,"level":1,"url":"item?id=46048318"}],"comments_count":10,"level":0,"url":"item?id=46044997"}],"comments_count":11,"url":"item?id=46044527"}

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