#TIL: For #integer operations in #Javascript, use bit shifting and bit masking if you can!

My first implementation of the #pow (proof of work) checker for #swad used division (with Math.floor()) and modulo, because after reading javascript represents all numbers as floating point, I assumed that would perform better. Turns out I was wrong, replacing these with bit shifting and masking improved performance by almost factor 3. Now the #code is much closer to what you'd do in #C.

https://github.com/Zirias/swad/commit/f3a040329988e2df4cff33ff54e5c292f3d349a7

#swad's new #pow (proof of work) credential checker is working! It does almost exactly the same as #anubis, with two little differences:

* the nonce string is calculated from a number by some custom base64-like encoding, which is a little bit more work than what anubis does.
* still it's only a fraction of the #javascript code because it skips e.g. all the "progress reporting" (don't really see the point here, it's probabilistic anyways, so just show a spinner) and similar things.

What's exactly the same is spreading the work across one worker per core, and the goal to find a nonce that makes the challenge sha256-hash to something with n (default: 5) leading zeros.

Before crafting a new release of #swad, I'll think about ways how to customize the login form template (so you can e.g. just add a button for "login as guest", or tell the user what to enter for that).

BTW, the binary size is currently around 175 kiB

News And Information From Ukraine https://www.byteseu.com/944693/ #ChemicalWeapons #Conflicts #Easter #genocide #NATO #POW #trump #UkraineNews #UkraineRussiaWar #WarCrimes #Zelenskyy

Welcome home!

"Among those liberated today are defenders from the #Mariupol garrison, National Guard, sailors, #soldiers of the Special Forces, State Special Transport Service, Air Assault Troops, and Unmanned Systems Forces.

Most of those who were returned are young people born after 2000,"

Today. Our people are home.

Today, the 63rd #prisonerexchange took place: 246 defenders were returned, and an additional 31 individuals were freed outside of the exchange process.

For the first time in years, many of them — some held since 2022 — will celebrate #Easter in freedom.

Сьогодні. Наші вдома.

#FensterFreitag

Impression aus dem #LagerSandbostel.

#Sandbostel #WindowFriday #StalagXB #bw #bwphoto #bwphotography #sw #schwarzweiß #swfotografie #monochrome
#pow #prisonerofwar #powcamp #prisonerofwarcamp #ww2 #Kriegsgefangenenlager #ZweiterWeltkrieg #NieWiederIstJetzt

#POW #EdanAlexander
#HannibalDirektive
@palestine

Hamas: “We announce that we have lost contact with the team guarding soldier Edan Alexander following a direct Israeli bombardment targeting their location...It seems that the occupation army is deliberately trying to kill him and hence relieve themselves from the pressure caused by the dual-citizen prisoners in order to continue its genocide against our people,”
Of course: captives dead, problem solved

https://news.antiwar.com/2025/04/15/hamas-says-it-lost-contact-with-guards-of-us-israeli-captive-after-israeli-strike/

April 16, 1945: On this date, the storied German prisoner of war (POW) camp at Colditz Castle was liberated. Established to hold Allied soldiers and airmen who had proven their mettle in escaping from other German camps - the Nazis thought it would be an inescapable POW facility. (Plot twist, it wasn’t.)

#WW2 #SERE #Colditz #POW

https://www.schloss-colditz.de/en/colditz-castle/

Anubis: self hostable scraper defense software

Weigh the soul of incoming HTTP requests using proof-of-work to stop AI crawlers

https://anubis.techaro.lol

Mar 24, On this date in 1944, the real ‘Great Escape’ occurred when British Commonwealth POWs escaped from the German prisoner of war camp Stalag Luft III.

It was immortalized in the HIGHLY fictionalized 1963 film ‘The Great Escape’ (including among other inaccuracies, the role of Americans in the actual escape.) In the movie, Steve McQueen's character was based on Jerry Sage of the Office of Strategic Services.

https://www.europesays.com/1936885/ North Korean POWs are not ‘bargaining issue’ between Kyiv and Seoul – Ukraine’s Ambassador #Conflicts #NorthKorea #pow #Ukraine #WarInUkraine

https://www.europesays.com/1933745/ Researchers Test a Blockchain That Only Quantum Computers Can Mine #DWave #Data #pow #ProofOfWork #QuantumBlockchain