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Nils Fleischhacker

@cryptomaeher.bsky.social
343 followers 207 following 528 posts

Cryptographer working on both applied and theoretical cryptography. Currently working as a Visiting Researcher at Flashbots. Opinions probably someone else's. he/him

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Nils Fleischhacker @cryptomaeher.bsky.social · 03/09/2026
Apparently our dishwasher is into Olympic weightlifting.
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Nils Fleischhacker @cryptomaeher.bsky.social · 26/08/2026
Spent four nights camping in the gorgeous mountains, just the two of us.
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Nils Fleischhacker @cryptomaeher.bsky.social · 26/08/2026
With some regret, I'm back. There's something peaceful about the treeless environment that no woodland has ever matched for me.
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Nils Fleischhacker @cryptomaeher.bsky.social · 22/08/2026
Oh yeah. That's the shit. See you in five days.
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Nils Fleischhacker @cryptomaeher.bsky.social · 24/07/2026
Now that's highly suspicious. 🤔
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Nils Fleischhacker @cryptomaeher.bsky.social · 19/07/2026
This conversation chart seems to have surprisingly major implications for mathematics.
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Nils Fleischhacker @cryptomaeher.bsky.social · 12/07/2026
Only if you don't try hard enough. en.wikipedia.org/wiki/Patrik_...
In May 2022, a scandal erupted In Norway, when a video published by Stavanger Aftenblad showed Patrik reducing the size of his goal, by literally moving the goalposts 15–20 centimetres inwards, after the referee's inspection, but prior to kick-off, in home matches during the early months of the 2022 season.
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Nils Fleischhacker @cryptomaeher.bsky.social · 15/05/2026
They have strong opinions on open source licenses here.
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Nils Fleischhacker @cryptomaeher.bsky.social · 02/05/2026
Yes yes, teaching them how to deal with the experience.
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Nils Fleischhacker @cryptomaeher.bsky.social · 01/05/2026
Now that's a hilarious complaint.
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Nils Fleischhacker @cryptomaeher.bsky.social · 21/04/2026
So many questions.
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Nils Fleischhacker @cryptomaeher.bsky.social · 15/04/2026
It's so cute.
A tiny black one cup Bialetti next to a plain metal three cup Bialetti.
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Nils Fleischhacker @cryptomaeher.bsky.social · 29/03/2026
Yes, for at least two weeks now.
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Nils Fleischhacker @cryptomaeher.bsky.social · 22/03/2026
A Magnolia in full bloom with the sun behind it.
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Nils Fleischhacker @cryptomaeher.bsky.social · 22/03/2026
German news may have just figured out the super secret business model of oil companies.
Screenshot from tagesschau.de with headline "Bereichern sich Mineralölkonzerne am Spritpreis?" which translates to "Are oil companies profiting from fuel prices?"
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Nils Fleischhacker @cryptomaeher.bsky.social · 18/03/2026
I was kind of hoping this would catch on, alas...
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Nils Fleischhacker @cryptomaeher.bsky.social · 07/03/2026
Maybe I should reconsider my career in cake decorating. 🤔
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Nils Fleischhacker @cryptomaeher.bsky.social · 04/03/2026
Azerbaijan could do something very funny right now.
A depiction of significant air traffic squeezing through Azerbaijani air space to avoid Russia and Iran.
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Nils Fleischhacker @cryptomaeher.bsky.social · 03/03/2026
Paperback books are called Taschenbuch in German. Literally "pocket book". I don't think my pockets are large enough.
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Nils Fleischhacker @cryptomaeher.bsky.social · 25/02/2026
So if I'm reading these exam regulations correctly, only women need to be qualified to act as an observer. Men just need to exist. Seems unintentionally on brand for academia I guess.
Mündliche 
Prüfungen werden in der Regel von mindestens zwei Prüferinnen oder Prüfern bzw. einer 
Prüferin oder einem Prüfer in Gegenwart einer sachkundigen Beisitzerin oder eines 
Beisitzers abgenommen.
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Nils Fleischhacker @cryptomaeher.bsky.social · 03/02/2026
I'm sorry, but what? People want authors to be blocked from submitting because they had a paper rejected? That's insane.
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Nils Fleischhacker @cryptomaeher.bsky.social · 31/01/2026
I guess I'm doing this wrong.
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Nils Fleischhacker @cryptomaeher.bsky.social · 30/01/2026
Imagine you have the following function and want to give it a good name that tells the reader what it does. What would that name be? So far the super serious contenders are "🌱" because we're planting m at position i, or "💉" because m is being injected at position i.
\[
  f(\vec{u},x,i) := \vec{v} \qquad v_j := \begin{cases}u_j & j\neq i\\ m & j=i \end{cases}
\]
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Nils Fleischhacker @cryptomaeher.bsky.social · 21/01/2026
"Vergewaltiger rechnet mit Lösung im Geschlechtsverkehr-Streit"
Screenshot von tagesschau.de "Trump rechnet mit Lösung im Grönland-Streit"
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Nils Fleischhacker @cryptomaeher.bsky.social · 14/01/2026
The Bundeswehr always deploys in baker's dozens.
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Nils Fleischhacker @cryptomaeher.bsky.social · 13/01/2026
So a question for people working on subways? Construction? My daughter wants to know what these scribbles on the wall of the subway tunnel shortly before Essen Main Station, approaching from the south might mean.
DDR 0,4
0/-1
1/W
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Nils Fleischhacker @cryptomaeher.bsky.social · 12/01/2026
Pondering time's up.
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Nils Fleischhacker @cryptomaeher.bsky.social · 10/01/2026
Apparently Lego at some point shittified their cables. The ones from the early nineties are perfectly fine. The ones from the late nineties look like this.
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Nils Fleischhacker @cryptomaeher.bsky.social · 28/11/2025
Beautiful, it "works" now. Except that the train is apparently composed of 100% first class coaches and consists of coaches 1 through 15. My seat reservation is in second class in coach 18. 🤔
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Nils Fleischhacker @cryptomaeher.bsky.social · 28/11/2025
Say what you will about Deutsche Bahn, but they usually manage to label their coaches. Top notch DSB!
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Nils Fleischhacker @cryptomaeher.bsky.social · 28/11/2025
Every time I see this, I have to wonder how many people got stranded before they added the sign.
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Nils Fleischhacker @cryptomaeher.bsky.social · 28/11/2025
Hamburg! And only 10 minutes late. Now it's up to DSB to disappoint me.
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Nils Fleischhacker @cryptomaeher.bsky.social · 28/11/2025
On my way to Aarhus. We'll see what delightful adventures the rail system has in store for us today.
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Nils Fleischhacker @cryptomaeher.bsky.social · 22/11/2025
First session of baking Christmas cookies ✅
A wire rack full of Berlinerkranser.A wire rack full of Vanillekipferl.A tub half full of Ausstercherle decorated with colorful sugar sprinkles.
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Nils Fleischhacker @cryptomaeher.bsky.social · 11/11/2025
Apparently a few cars need to enter the parking structure for it to be empty.
Sign for a parking structure showing 102% empty.
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Nils Fleischhacker @cryptomaeher.bsky.social · 09/11/2025
Sometimes you just have to admit that you wouldn't be any good at running a successful tradwife channel. Smells heavenly though.
A baking sheet with a bunch of misshapen attempts at making Kardemummabullar. The filling has leaked out and caramelized in the sheet.
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Nils Fleischhacker @cryptomaeher.bsky.social · 03/10/2025
Very helpful. 👍 I mean telling me *what* I need to do would be even more helpful, but you know. 🤷‍♂️ Anyway, apparently I no longer have access to my emails on my phone. Well, we had a good run.
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Nils Fleischhacker @cryptomaeher.bsky.social · 17/09/2025
Well, Shit.
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Nils Fleischhacker @cryptomaeher.bsky.social · 12/09/2025
I have to wonder by what distance metric that's "near me".
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Nils Fleischhacker @cryptomaeher.bsky.social · 29/08/2025
Well that's working perfectly Strava. I always wanted the route to 2cm offset from where I'm drawing.
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Nils Fleischhacker @cryptomaeher.bsky.social · 09/08/2025
First time running *below* sea level.
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Nils Fleischhacker @cryptomaeher.bsky.social · 05/08/2025
Exquisite
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Nils Fleischhacker @cryptomaeher.bsky.social · 05/08/2025
Filetting the fish went about as well as could be expected.
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Nils Fleischhacker @cryptomaeher.bsky.social · 05/08/2025
Well that was unexpectedly successful.
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Nils Fleischhacker @cryptomaeher.bsky.social · 03/08/2025
I hate induction stoves.
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Nils Fleischhacker @cryptomaeher.bsky.social · 17/07/2025
They keep adding more and more signs, as if that's going to stop people.
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Nils Fleischhacker @cryptomaeher.bsky.social · 24/06/2025
Magnificent.
A citation with the author given as "Center for Democracy and Technology" and the label being "[fDT21]"
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Nils Fleischhacker @cryptomaeher.bsky.social · 04/06/2025
Requesting a visual inspection of the local hummus @nadim.computer
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Nils Fleischhacker @cryptomaeher.bsky.social · 18/05/2025
Well, fuck me. Almost to the day one year after I ran 5k for the first time in my life. duisburg.r.mikatiming.de/2025/?conten...
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Nils Fleischhacker @cryptomaeher.bsky.social · 15/05/2025
Some (as of yet unknown) species has earned my undying hatred.
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