Jyrki 
🐾
@nilsding@pounced-on.me
- Website
- https://nilsding.org
- GitHub
- https://github.com/nilsding
- FurAffinity
- https://furaffinity.net/user/nilsding
- Matrix
- @nilsding:rrerr.net
Admin
I'm a fox who writes code and enjoys the outside. Sysadmin. Occasionally does things with #Ruby, #Qt, #Renoise, #demoscene, ...
They/them.
@karina is a precious piece of garbage 💕
Trans rights are human rights. 🏳️⚧️
Follow requests 🆗 (I'm more likely to accept them if you have some posts already)
Profile pic by https://www.furaffinity.net/user/jackmulroney/
Header pic by @dogo: https://pounced-on.me/@dogo/105197118768083296
Joined Sep 2018
@karina skill issue
Jyrki 🐾
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@cato schaut ja ganz okay aus!
@cato the what?
aaah, rain ❤️
Jyrki 🐾
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This was particularly tricky to make work because the image data in a PNG needs to have a valid adler32 checksum, *and* a valid crc32 checksum.
Each hex digit "pixel" needed its own colliding block, generated with UniColl. There are 448 of them, taking over 24h to compute.
The adler32 checksum was collided to a chosen value using 48 FastColl collisions, with a meet-in-the-middle technique.
After the adler32, the crc32 was collided similarly, using another 48 FastColl blocks.
As the name suggests FastColl is fast, and this part only took ~minutes.
UniColl: https://github.com/corkami/collisions/blob/master/unicoll.md
FastColl: https://www.win.tue.nl/hashclash/
Each hex digit "pixel" needed its own colliding block, generated with UniColl. There are 448 of them, taking over 24h to compute.
The adler32 checksum was collided to a chosen value using 48 FastColl collisions, with a meet-in-the-middle technique.
After the adler32, the crc32 was collided similarly, using another 48 FastColl blocks.
As the name suggests FastColl is fast, and this part only took ~minutes.
UniColl: https://github.com/corkami/collisions/blob/master/unicoll.md
FastColl: https://www.win.tue.nl/hashclash/
Jyrki 🐾
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The image in this post displays its own MD5 hash.
You can download and hash it yourself, and it should still match - 1337e2ef42b9bee8de06a4d223a51337
I think this is the first PNG/MD5 hashquine.
You can download and hash it yourself, and it should still match - 1337e2ef42b9bee8de06a4d223a51337
I think this is the first PNG/MD5 hashquine.
Jyrki 🐾
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hmm... is trying to replace a pair of noisy 16200/12000RPM fans with two quiet 5000RPM fans a bad idea?
@pixel sounds nice! have a lot of fun with it :>
in an attempt to gain more feature parity with gitlab, github now can display a user's time zone on their profile
Jyrki 🐾
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@pixel how was assembling it?
@pixel van moof! 
Jyrki 🐾
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i think we should build bigger storage media. a CD with a 1 meter diameter. A USB thumb drive that you can pole vault with. Just a comically oversized floppy disc that you could use as a cape.
@owashii so the bartender's got some lemonade?
@pludikovsky Definitely not; the replacement fans don't move on their own under full speed.
@stolas_mk2 1U rack-mounted servers
Jyrki 🐾
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@nilsding Obligatory bash.org quote for the opposite scenario: http://www.bash.org/?5273
@kithop hah, I know exactly what you linked me to without even clicking on the link :D
- Website
- https://nilsding.org
- GitHub
- https://github.com/nilsding
- FurAffinity
- https://furaffinity.net/user/nilsding
- Matrix
- @nilsding:rrerr.net
Admin
I'm a fox who writes code and enjoys the outside. Sysadmin. Occasionally does things with #Ruby, #Qt, #Renoise, #demoscene, ...
They/them.
@karina is a precious piece of garbage 💕
Trans rights are human rights. 🏳️⚧️
Follow requests 🆗 (I'm more likely to accept them if you have some posts already)
Profile pic by https://www.furaffinity.net/user/jackmulroney/
Header pic by @dogo: https://pounced-on.me/@dogo/105197118768083296
Joined Sep 2018
