@fj@mastodon.social
@fj@mastodon.social avatar

fj

@fj@mastodon.social

Cryptographic & Security Engineering at Apple.
Previously: Lead iOS Developer https://mastodon.world/@signalapp

Tooting on all things #cryptography, #security, #climate, European #aerospace, #energy and #mobility

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fj, to 8bit
@fj@mastodon.social avatar

🚀 Pretty cool overview by Tim Dodd of the design of two German rockets: One and Isar's 🇩🇪🇪🇺

I had the chance to visit the Spectrum assembly hall so already knew about the amazing 3D printing of their thrust chambers, but didn't appreciate how different the design philosophy was between both companies.

RFA is heavily leveraging an automotive supply chain to reduce cost and offer a scalability advantage compared to other aerospace companies.


https://www.youtube.com/watch?v=LRFnGnJzRJQ

fj, to MLS French
@fj@mastodon.social avatar

Using a ternary tree instead of a binary tree in #MLS’ TreeKEM allows to reduce by 10% communication costs when the ML-KEM post-quantum ciphersuite is used
#cryptography #pqc #postquantum
https://eprint.iacr.org/2024/746

fj, to random French
@fj@mastodon.social avatar

Today I learned: “A candidate for the European election in Belgium does not have to hold Belgian nationality, as long as they are an EU citizen”

https://www.politico.eu/article/dutch-lawmaker-sophie-in-t-veld-joins-belgian-party-volt/
https://volteuropa.org/policies/policies

fj, to random French
@fj@mastodon.social avatar

Si certains artistes de Nouvelle-Calédonie cherchent de l'inspiration artistique.
https://www.lemonde.fr/pixels/article/2024/05/16/pourquoi-et-comment-tiktok-a-ete-bloque-en-nouvelle-caledonie_6233589_4408996.html

fj,
@fj@mastodon.social avatar

@ahmetasabanci Definitely a different time!

gsuberland, to random
@gsuberland@chaos.social avatar

well, I wondered how many Starlink satellites would fall out of orbit after the solar storm, and we have an answer: somewhere between 7 and 13

https://chaos.social/@gsuberland/112419858515395976

fj,
@fj@mastodon.social avatar

@gsuberland I don't think that's related?
The ones that have re-entered were already scheduled to be de-orbited ahead of the solar storm.

fj, (edited ) to random
@fj@mastodon.social avatar

The implementation of this is unclear at the moment, but it’s laughable that a country that can’t pass basic privacy legislation is taking action to hide data from transponders of billionaires’ private jets #priorities

https://mastodon.social/@GovTrack/112446943250670312

fj, to random
@fj@mastodon.social avatar

Hong Kong used to be a bastion of free speech, at the border with China. China is no longer tolerating its existence.

Glory to Hong Kong (will now be banned in Hong Kong on YouTube)!
https://www.youtube.com/watch?v=y7yRDOLCy4Y

https://www.wsj.com/world/china/youtube-says-it-will-block-protest-song-in-hong-kong-21a0d4f4?mod=latest_headlines

xor, to random
@xor@tech.intersects.art avatar

loved visiting paris and generally loved the metro. but the ticketing experience was beyond awful in several ways. I hope they're fixing some of that before the olympics 😬

fj,
@fj@mastodon.social avatar

@xor Best is to buy a Navigo card, which you can then refill using their app.

https://www.ratp.fr/en/titres-sur-telephone

fj,
@fj@mastodon.social avatar

@xor Yeah, they are terrible. I’m glad they are fading them out

fj, to random
@fj@mastodon.social avatar

I've been wanting to look into formally verifying #Rust code with #Hax for a while, but wasn't sure where to start.

Thankfully Lucas Franceschino from @cryspen has now a tutorial to get started!

https://hacspec.org/blog/posts/announcement-tutorial/

fj, to random
@fj@mastodon.social avatar

Regardless of your political leanings, it's hard to not see as a massive achievement of the Commission.

Without joint purchasing of gas, the prices would have gone through the roof, and there would have been nowhere as much deployment of renewables.

This is the European cooperation and solidarity that Euroskeptics and nationalists want to destroy.

https://energy.ec.europa.eu/topics/markets-and-consumers/actions-and-measures-energy-prices/repowereu-2-years_en

fj, to random
@fj@mastodon.social avatar

deleted_by_author

    •
    fj, (edited )
    @fj@mastodon.social avatar

    @sincereabsurdity I think that would be a shortcut at this point. The paper definitely needs attention and more research is needed to confirm computational complexity of the algorithm against various lattice parameter sets. But curious what other folks think like @malb or @ducasleo
    Edit: this was about https://eprint.iacr.org/2024/712

    fj, to random
    @fj@mastodon.social avatar

    Jeroen van Tilburg, previously head of EMEA supercharging at Tesla takes over the CEO role at IONITY.

    fj, to random
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    Interesting paper from 2018 quantifying the impact of #solarflares on #GNSS systems.

    The 🇨🇳 BeiDou system was outperforming 🇪🇺 Galileo and 🇺🇸GPS during solar flare conditions due to more frequently updated broadcast ionospheric models.

    https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018RS006591

    I know Galileo/EGNOS did a recent system upgrade to provide increased resilience against solar peak activity, anticipating Solar Cycle 25, but not sure what those consisted of. Maybe @bert_hubert would know?

    https://www.euspa.europa.eu/newsroom-events/news/egnos-safety-life-service-offers-increased-resiliency-against-peak-solar

    fj,
    @fj@mastodon.social avatar

    "the solar storm ruined the accuracy of RTK systems for many farmers using John Deere tractors”

    "Tom Schwarz, who owns an organic farm in Nebraska, told me he had to stop planting on Friday and Saturday because of the issue, and said that the outage, combined with a bad weather forecast in the next few days, is threatening the small time window that he has to plant corn.”

    According to the Deere website, their Radio RTK does only use GPS and GLONASS.

    https://mastodon.social/@jasonkoebler/112428406876457168

    fj, to random
    @fj@mastodon.social avatar

    I don't think I'm getting any sleep tonight.

    image/png

    fj,
    @fj@mastodon.social avatar

    @wendinoakland Lausanne, Switzerland

    fj,
    @fj@mastodon.social avatar

    @macmade Drove up to the Col de Jaman for these shots :)

    fj,
    @fj@mastodon.social avatar

    @zaski Nooon!
    C’est vous qui parliez de l’ISS et de la voie lactée?
    Pas de soucis en tout cas :)

    fj,
    @fj@mastodon.social avatar

    @JulietJFall @yrochat C’est peut être encore possible de la voir cette nuit!

    fj, to random
    @fj@mastodon.social avatar

    I'm a bit intrigued by the Italian-made Seabike concept. Seems like an obvious thing in retrospect so curious why there haven't been things like it before.
    Anyone tried it already?
    https://www.seabike.fr

    video/mp4

    fj,
    @fj@mastodon.social avatar

    @luca_defeo fidèle a un design qui joint l’utile à l’agréable

    xgranade, to random
    @xgranade@wandering.shop avatar

    Fuck me, fuck everything, fuck this whole climate-burning labor-killing fraud. I just want to touch computers, not constantly guard against rogue scams taking over evey aspect of my online life.

    fj,
    @fj@mastodon.social avatar

    @xgranade "Never uploads your work to someone else's cloud” ~> In principle ;)

    https://qz.com/932448/forget-smart-tvs-in-the-1980s-spies-were-hacking-typewriters

    fj, to random
    @fj@mastodon.social avatar

    ~100 more Starlink v1 satellites will be burning up in the upper atmosphere in the next 6 months, bringing up the total number of de-orbited Starlink satellites to ~500 out of 6000 launched
    https://api.starlink.com/public-files/Commitment%20to%20Space%20Sustainability.pdf

    De-orbiting satellites by burning them up did work when the volume of satellites was small, but already 10% of aerosol particules in the stratosphere contain aluminum/other metals.
    The problem is only going to get worse with the launch of megaconstellations https://www.pnas.org/doi/full/10.1073/pnas.2313374120

    fj,
    @fj@mastodon.social avatar

    7 Starlink satellites burned up in the higher atmosphere yesterday.

    Unlike what some are saying, these are satellites that were already planned to re-enter ahead of the solar storm and were launched in 2020/2021.

    fj,
    @fj@mastodon.social avatar

    @doc From their own press releases, it's 5 years maximum.

    > Atmospheric drag at these altitudes
    will deorbit a satellite naturally in 5 years or less

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