mastodon 4.7.3Programmer, mathematician, cryptographer, game developer.
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.
RE: @eniko@mastodon.gamedev.place
Some people might think that this take is unhinged or not serious. And while it is certainly not a good solution in all cases, it is really easy to implement, and it turns out that a modern comuter can actually simulate quite a lot of complexity at say 1000 fps, as long as you don't do any other stupid thing that slows it down.
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?
- What do we want?
- Numerical stability!
- When do we want it?
- In -0.000000078524 days!
I believe that this was actually a quite common opinion in occupied European countries during WWII.
The occupying force behave civilised, leave them to their business, don't cause any trouble, and they will generally return the favour.
Meanwhile those pesky resistance people run around and blow stuff up in the middle of the night, as if the wartime wasn't bad enough already.
Since search doesn't work anymore, I have no idea if I am the first person to make this algorithm. Proper write-up coming later, but I want to make a record that is at least good enough for someone else to reproduce my results so far.
Problem statement: Given a mesh of arbitrary triangles in 3D space, with every vertex having a normal. Transform every triangle into a smooth surface defined by a formula, such that the combined surface is also smooth, and the normals are normals for that surface.
So, all the articles about this are kind of old, but I assume that Trump has been trading on the Iran war for as long as it has been going. Every flip flop between peace talks and new strikes is a trading opportunity.
This explains what is going on. As long as you assume that Trump is an utter moron. If he wasn't, he would simply trade on whatever information he is privy to, without having to generate the events himself.
RE: @acarsdrama@live.acarsdrama.com
You are a pilot, trapped in a thunderstorm, trying to land your plane.
You have just aborted your third approach. Between the roars of thunder you can hear children crying in the cabin, possibly adults too.
As you desperately try not to reach the inevitable conclusion, there are many questions you could ask: "Why haven't we been diverted?", "Would a better pilot than me have managed this?". But none of that matters any more, there is just one thing you must know before you go:
Americans agree: Man who is "just doing his job" ought to stop.
@djb@mastodon.cr.yp.to 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.
Thought of the day: If you are a military commander, and you give a whole unit the order "Fire at Will", then you are taking this whole war thing WAY too personal.
Fun fact: Back in the day people used to sacrifice a network card, as to appease Unica, the goddess of uniqueness, before generating IDs.
Fun fact: A correctly implemented floating point modulo operation is exact. Even if the corresponding division would produce a result that is way out of integer range it is still relatively easy to compute the exact modulo. It notably does not require computing the corresponding division result to a similar precision, and is asymptotically faster than doing so.
Realisation: A modern memory controller is just software defined radio, but without the radio, and a good chunk of the software hardwired in hardware.
For a man that isn't dead, Tim Cook has had an awful lot of obituaries written about him.
