RT @cronokirby@twitter.com
Someone linked me to this site, and it has like, an entire book on finite field arithmetic.
Love discovering old internet monoliths like this
Fox chirality!
Do foxes obey Bose-Einstein statistics, in which case their spin quantum numbers would be +1 and -1, or do they obey Fermi-Dirac Statistics, +1/2 and -1/2?
If the latter, it is possible that the fox is a Majorana fermion, in which case a fox of the opposite spin would be its antiparticle.
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HKDF is commonly used to derive key material just in time for its application. However, as a cryptography tool, HKDF is severely under documented and lacks prescriptive examples for intended use.
A large-tech blog shared their HKDF application and I identify several issues with its implementation. Inside is an anonymized version with critiques and improvements.
Tags: #cryptography #hkdf #blog #engineering #security
cendyne.dev/posts/2023-01-30-h…
How to use HKDF to derive new keys
HKDF is a great tool to derive sub-keys from a master key, however it is often misused! Be careful about the salt parameter and use info correctly!cendyne.dev
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How extremely convenient that IBM Research found a colorblind friendly color palette that includes roughly the colors of the bi pride flag 
davidmathlogic.com/colorblind/…
Coloring for Colorblindness
This interactive visual tool lets you see how accessible your color palettes are to viewers who are colorblind.davidmathlogic.com
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Les patterns de mon générateur de mire [1] sont des fichiers SVG faits à la main. N'hésitez pas à me donner votre avis. 😌
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Petite astuce si vous souhaitez faire basculer votre TIC en mode standard sur votre compteur Linky en étant client.e EDF:
Contacter le 09 69 32 15 15 puis choix 1, 2 puis 4.
Si le conseiller ne connait pas la procédure, dites lui de faire une F185 sur le site SGE en choisissant le mode standard. Préciser que la procédure a été confirmée précédemment avec le groupe TD.
Appeler de préférence en période creuse (temps de midi par ex). Normalement, le changement devrait être effectif la nuit suivante.
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Au passage, c'est plutôt bien documenté chez Enedis : enedis.fr/media/2035/download
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wunkolo.github.io/post/2023/01…
tdpbuud: Average Color
Using artificial intelligence and machine learning instructions to get the average color of an imagewunkolo.github.io
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18J/cm², 3ms, ø15mm
We definitely caught more hair this time. I've got an appointment in 5 weeks, that might be delayed or canceled if everything goes according to plan 💜
A DICOM image.
DICOM is the medical image format, very TIFF-like.
Its preamble makes many polyglots possible, including TIFF-DICOM sharing the same image data.
It doesn't tolerate appended data - but just append a "private" tag if needed.
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Every company saying that their data is encrypted at rest with "strong encryption" is saying nothing. It's a free, effortless and shameless statement to boost the org's false security posture to the untrained masses. It's even worse when they say it to justify that their security was sufficient after a breach.
Encrypted data at rest just means they use the cloud. It's standard cloud practise. They give it basically for free at a button toggle. "Using military grade encryption" yes I know it's AES. That shouldn't make you feel any safer. Optus even said their unauthenticated API was protected by double layers of encryption! (TLS in transit and AES at rest!). That meant nothing, and did nothing to protect their breach. Why?
Because the threat models that encryption at rest protects against is someone walking into some data center and grabbing hard drives. And no one does that. Every piece of encrypted information stored by your business is constantly decrypted at some point for use - especially customer and production data. Any attacker who compromises your employees with access to cloud resources, or an application/system with access to those cloud resources will have credentials and permission to decrypt the data. Because at the end of the day encrypted data is just as useless to you as it is to the attacker.
@h4sh, thank you. I wasn't taking your post as being about us. I, too, get very irritated when services call "encryption at rest" is a defense against an exceedingly narrow threat. (Someone walks away with the hard drives.)
I get even more irritated when auditors and the like conflate that with what we do.
- "Well, today I found out I've got a full shelf of CDs the national library in charge of the mandatory deposit in my country does not even have in its database, which lead me to read back the law to ensure I wasn't liable to a hefty fine."
tbf I share 99% of my library being online daily. But I still keep a few exclusive recordings which I know are either very rare to come by or shit I recorded from livesets from when I used to work as a sound engineer.
The rare records no one would actually be interested in, the live sets could easily be tied to me if they happend to leak on yt or something.
Blasting Cbat with the home theater rig made the periodic bed noises from upstairs that have been going on for more than an hour stop straight away.
I think the message has been received... 😈
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Note this is a choice some IT person made years ago and nobody realizes is optional, or something is actually broken and people just got used to it. Re-Auth could be entirely seamless if they wanted, or only enforced for certain apps. This is not intrinsic.
Something I see a lot is people accepting bad IT experiences as mandatory. Like this is life, get on with it. But this isn't remotely true.
It's a choice, sometimes just not a choice an organization realizes it has. I have to be the person calling bullshit on stuff because I know. Because I understand what's normal outside the org, or I have literally done their job before as an IT Generalist.
The business malaise in accepting deteriorated user experiences is frankly shocking.
You're being led like a dog by people who aren't being challenged to do better. Who often are not stupid and can do better, but have no mandate to venture it.
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A lot happened in 2022 (in a good sense as far as I'm concerned). A few rough times, but I got to make things moving 💜. Let's make 2023 even better ✨
Happy new year, and all the best to all of you 🎇
Ah ! À partir de demain un 02 ne sera plus forcément un 02 #téléphone #arcep
« A partir du 1er janvier 2023, les contraintes géographiques des numéros 01 à 05 s’assouplissent. Concrètement, il sera possible de conserver son numéro de téléphone fixe, notamment en cas de déménagement, dans une autre zone géographique de France métropolitaine. »
arcep.fr/demarches-et-services…
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A very interesting take on the universe as seen from the perspective of the 2m amateur radio band by the #LOFAR radio telescope.
RT @cosmos4u@twitter.com
V-LoTSS, The Circularly-Polarised #LOFAR Two-metre Sky Survey: arxiv.org/abs/2212.09815 -> twitter.com/AstroJoeC/status/1…
🐦🔗: twitter.com/cosmos4u/status/16…
V-LoTSS: The Circularly-Polarised LOFAR Two-metre Sky Survey
We present the detection of 68 sources from the most sensitive radio survey in circular polarisation conducted to date.arXiv.org
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it's @spacegirl video day!
youtube.com/watch?v=gRSyRy-Yq-…
What is a relay?
Let's talk about how relays work, and how we can use them in basic circuits :)I scanned The Design of Switching Circuits and uploaded to the Internet Archive...YouTube
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I think I found my next antenna. Need to find the real estate agent that has this listing!
youtube.com/watch?v=M9RxlUNIBB…
Top Secret Abandoned Satellite Dish Found On A Mountain. Explore # 107
Top Secret Abandoned Satellite Dish Found On A Mountain. Explore # 107B.C. CanadaDoing some digging online I came across this top secret abandoned satellite ...YouTube
Germanium transistors: logic circuits in the IBM 1401 computer
How did computers implement logic gates in the 1950s? Computers were moving into the transistor age, but transistors were expensive so cir...www.righto.com
Slowly getting there (15J/cm², 3ms, ø 15mm). Some persistent spots, but significantly less tingly despite the 15% power increase.
We have to deromanticize community. It's not some pristine untouched forest of soft moss and good vibes. The corporations count on that misconception to stripmine us for content.
Community has always been as weird and messy as humans are. It's work. It's relationships. It's hard. There isn't a magic number. They aren't inherently anticommercial. They don't all look or act the same.
That's one of the reasons I wrote this and am driven to write more: powazek.com/posts/3571
A community isn’t a garden, it’s a bar.
It’s almost 2023. The world is different, the online world is very different, and I’m pushing 50. So I think it’s time we all start talking about online gathering places with a mo…Derek Powazek
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UK government could challenge Scottish gender change law
Legally changing gender is to become easier in Scotland but the UK government is not happy about the move.By David Wallace Lockhart (BBC News)
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I wonder how famous people cope with this.
malevolent dictator for life
in reply to niconiconi • • •malevolent dictator for life
in reply to malevolent dictator for life • • •"it's very easy, just consult this table"
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