@Jacob Christian Munch-Andersen
Programmer, mathematician, cryptographer, game developer.
Relays (1)
- wss://relay.ditto.pub – read & write
Recent Notes
In case someone feels the itch to buy new gaming equipment, but can't because everything is expensive:
Have you considered getting a new monitor?
Prices have dropped like crazy, a basic 27" 2560x1440 180Hz model start out at $120 US.
Have you considered getting a new monitor?
Prices have dropped like crazy, a basic 27" 2560x1440 180Hz model start out at $120 US.
@nprofile1q... @nprofile1q... I don't want to draw the conclusion too broadly, it is most certainly complicated, with a lot of "depends". I don't recall all that much about Go, but doesn't it allow you to make a simple array of structs? (Probably called something different.) That would have the same effect on garbage collection.
Of course struct-of-arrays can be faster regardless of language if your access pattern happens to favour that paradigm.
Of course struct-of-arrays can be faster regardless of language if your access pattern happens to favour that paradigm.
@nprofile1q... @nprofile1q... That is probably mostly an artefact of coding around the garbage collector. An array of 1M objects with 10 simple values each is 1000001 objects, whereas 10 arrays of 1M simple values each is 10 objects.
You have effectively broken garbage collection, but you have also reduced the number of objects that the collector has to consider so much that even a quite badly coded collector can't do much performance damage.
You have effectively broken garbage collection, but you have also reduced the number of objects that the collector has to consider so much that even a quite badly coded collector can't do much performance damage.
Renembering that the cryptography puzzles I've attempted to contribute to DCFurs in past years went unsolved :(
@nprofile1q... Are your puzzles available somewhere?
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So, I was just casually checking my Gmail spam box, and i found an email from Google. Of course you would just think that this is some scammer impersonating Google, but everything checks out. It is from the google.com domain, SPF, DKIM and DMARC all pass.
The content of the email is telling me that "because EU" I get to configure whether or not particular Google services are linked.
I wonder how that made it to the spam folder.
#google #gmail #eu #regulation #antitrust
The content of the email is telling me that "because EU" I get to configure whether or not particular Google services are linked.
I wonder how that made it to the spam folder.
#google #gmail #eu #regulation #antitrust
@nprofile1q... I read your old post on key sizes, unfortunately still relevant: https://blog.cr.yp.to/20151120-batchattacks.html
I noted two points that it probably should mention, but doesn't:
1. That the issue also apply to random number generators, all cryptographic algorithms are vulnerable if their key stems from an RNG with 128 bits of state.
2. That mitigation is free. For most symmetric algorithms a change that increases key/state size does not have to increase computation.
I noted two points that it probably should mention, but doesn't:
1. That the issue also apply to random number generators, all cryptographic algorithms are vulnerable if their key stems from an RNG with 128 bits of state.
2. That mitigation is free. For most symmetric algorithms a change that increases key/state size does not have to increase computation.
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New blog post "NSA and IETF, part 7: Counting votes." https://blog.cr.yp.to/20260405-votes.html Turns out to be 22 votes against, 21 votes for: not even a majority in favor, never mind consensus. IETF...
@nprofile1q... It is funny how you find one of the best arguments against in the "yes" crowd:
"I have customers that, despite our recommendations will want to 'pure' ML-KEM."
"I have customers that, despite our recommendations will want to 'pure' ML-KEM."
Idea: Single use virtual memory.
Don't bother ever reusing the same virtual memory space, you always allocate in a new place, and once you free it is gone.
If you have a true 64 bit virtual memory space then this is surprisingly practical. There is no remotely realistic scenario where you are ever going to run out.
Upsides include a dead simple allocator, and a guarantee that use-after-free will result in a hardware exception. What is not to like?
Don't bother ever reusing the same virtual memory space, you always allocate in a new place, and once you free it is gone.
If you have a true 64 bit virtual memory space then this is surprisingly practical. There is no remotely realistic scenario where you are ever going to run out.
Upsides include a dead simple allocator, and a guarantee that use-after-free will result in a hardware exception. What is not to like?
Jeg stemmer på en af Jordskreds kandidater i morgen. De er en alliance af aktivister fra klimabevægelsen der stiller op for både Ø og Å, og vil ind og ændre tingene på Christiansborg. De har al...
@nprofile1q... @nprofile1q... @nprofile1q... Har I nogen ide om hvem man bør stemme på hvis man ikke befinder sig I en af de valgkredse hvor Jordskred er stillet op? Selv er jeg i Nordsjælland.
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