Nope. I don’t talk about myself like that.

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Joined 2 years ago
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Cake day: June 8th, 2023

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  • So much fear mongering and incorrect statements… and I’m only 3 minutes in. I can’t…

    Nearly all encryption mechanism currently in use on the modern internet is quantum resistant. Breaking RSA-2048 would require millions of stable, error-corrected qubits. I believe the biggest systems right now are at 500 bits at most.

    The NIST Post-Quantum Cryptography project has finalized new quantum-resistant algorithms like CRYSTALS-Kyber and Dilithium. These will replace RSA and ECC long before practical quantum attacks exist. Migration has already started.

    Symmetric cryptography is mostly safe. Algorithms like AES, SHA-2, SHA-3, and similar remain secure against quantum attacks. Grover’s algorithm can halve their effective key strength. Example: AES-256 becomes as secure as AES-128 against a quantum attacker. To crack on AES-128 hash with current efficiency you need ~88TW of power… Even if we make it 10 or 100x more efficient over time… It’s too expensive. We don’t have the resources to power anything big enough to crack aes-128… The biggest nuclear reactor (Taishan) only puts out a mere 1,660MWe…

    It’s not happening in our lifetimes. and probably not at all until we start harvesting stars.

    Edit: Several typos.

    Edit 2: For the AES-256 example that get’s reduced to AES-128. It would take implementing efficiencies that reduce power usage by 1000x (there’s a few methods that might get worked out in our lifetimes… lets just take them as functional right now). Then you’d need 55 of the biggest nuclear reactors we have on the planet… Then you wait a year for the computer to finish the compute. That decrypts one key.

    Weaker keys might be a problem. Sure. But by the time we’re there… it won’t matter. For things like Singal, Matrix, or anything else that’s actively developed… Someone might store the conversation on some massive datacenter out there… And might decrypt it 200 years from now. That’s your “risk”… Long after everyone reading this message is dead.

    Edit 3: Because I hadn’t looked at it in a few months… I decided to check in on Let’s Encrypt’s (LE) “answer” to it. Since that’s what most people here are probably interested in and using. First… remember that Let’s Encrypt rotates keys every 90 days. So for your domain, there’s 4 keys a year to crack at a minimum. Except that acme services like to register near the halfway point… So more realistically 8 keys a year to decrypt a years worth of data. But it turns out that browsers already have the PQC projects done… And many certificate registrars already support it as well. OpenSSL also supports it from 3.5.0+…

    https://community.letsencrypt.org/t/roadmap-request-post-quantum-cryptography/231143/9

    https://developers.cloudflare.com/ssl/post-quantum-cryptography/pqc-support/

    Apparently LE is even moving to MUCH shorter certs… https://letsencrypt.org/2025/02/20/first-short-lived-cert-issued 6 days… So a new key every half-week (remember acme clients want to renew about halfway through the cycle)… or ~100 keys a year to break. Even TODAY, you’re not going to need to worry about “weak” encryption for decades. It will take time for the quantum resources to come available… it will take time to go through the backlog of keys that they are interested in decrypting EVEN IF they’re storing 100% of data somewhere. You WILL be long dead before they can even have the opportunity to care about you and your data… The “200 years from now” above reference… is assuming that humans can literally harvest suns for power and break really really big problems in the quantum field. It’s really going to be on the order of millennia if not longer before your message to your mom from last year gets decrypted. LE doesn’t have PQC on the roadmap quite yet… Probably because they understand there’s still some time before it even matters and they want to wait a bit until the cryptography around the new mechanisms is more hashed out.

    Edit4: At this point I feel that this post needs a TL;DR…

    If you’re scared… rotate keys regularly, the more you rotate, the more keys will have to be broken to get the whole picture… Acme services (Let’s Encrypt) already do this. You’ll be fine with current day technology long after (probably millennia) your dead. No secret you’re hiding will matter 1000 years from now.

    Edit5: Fuck… I need to stop thinking about this… but I just want to point out one more thing… It’s actually likely that in the next 100 (let alone 1000s of years) that a few bits will rot in your data on their cluster that they’re storing. So even IF they manage to store it… and manage to get a cluster big enough that either takes so little power that they can finally power it… or get a power source that can rival literal suns. A few bits flipped here and there will happen… Your messages and data will start to scramble over time just by the very nature of… well… nature… Every sunflare. Every gravitational anomaly. Every transmission from space or gamma particle… has a chance to OOPS a 0 into a 1 or vice versa. Think of every case you’ve heard of Amazon or Facebook accidentally breaking BGP for their whole service and they’re down for hours… Over the course of 100 years… your data will likely just die, or get lost, be forgotten, get broken, etc… The longer it takes for them to figure this out (and science is NOT on their side on this matter) the less likely they even have a chance to recover anything, let alone decrypt it in a timely matter to resolve anything in our lifetimes.


  • These timers have no concept of understanding if the air is too humid.

    They want a cooldown period so the unit isn’t cycling constantly.

    eg. turning on and off 30 times in an hour because the sensor triggers the moment it see’s 46% when it’s set to 45.

    They want it so that it triggers on pull humidity down to 45%, wait an hour no matter what then trigger the next time it sees 46% or greater, which could be immediately… or in 5 more hours.

    A pure timer wouldn’t get the same effect at all.

    Best answer I can think of off hand would be Home Assistant related. Get a humidity sensor and a z-wave switch/outlet. Use a dumb dehumifier that turns on as long as it has power…

    On humidity sensor change check if above 45%. If it is, turn on power. wait until below 45% again… turn power off then wait 60 minutes. Make sure automation is set to not run concurrently, that way the currently running automation script must complete it’s 60 minutes cooldown before it can run again





  • 18-24 credit hour semesters… and summer courses when available.

    Since I knew virtually most of the program going in, course load in general was stupidly easy to manage. But I would not recommend it unless you really know the material/subject matter.

    Edit: there was heavy incentive… GI bill pays for 4 years of schooling. I have a few months left of that 4 year period left of my GI bill… But if I didn’t take everything accelerated, I couldn’t get the masters. So I just went full ham on the curriculum.



  • Broad statements are misleading.

    Ignoring the context of the discussion is even more misleading. In the context of this conversation, ISPs providing consumer connections and obtaining grant money, my statement is 100% accurate.

    That’s how you get fiber into a building or between buildings.

    You just said multimode can’t do significant speeds at distance, yet claim that buildings separated by distance would be connected with it? That logic doesn’t hold.

    Intrabuilding or intrarack Yes, you’ll find multimode fiber occasionally. But even these rare cases are increasingly replaced by single-mode as costs drop and bandwidth needs rise.

    Everything else (ISP deployments, backbones, FTTH) Single-mode fiber dominates. I haven’t seen a single ISP deploy multimode for consumer-facing services over a typical network radius (~hundreds of meters to kilometers). The only minor exception is MMF from the building network room to an apartment unit, which is irrelevant for this discussion and would be EXCEEDINGLY rare as most buildings would just copper line to the unit. But even in that case… the 20+km from the head end to the building counts for much more than the 20meters to the unit itself.

    For all practical ISP purposes, single-mode fiber is what’s in the ground/on the pole, and upgrades are handled via transceivers, not ripping out the cable.


    OM4 multimode won’t push 10gb at 500meters no matter how good your hardware is.

    But just because you said it…

    https://www.corning.com/catalog/coc/documents/application-engineering-notes/AEN075.pdf

    and OM4 is suitable for distances up to 550 m

    https://www.fs.com/uk/blog/om4-multimode-fiber-faq-highspeed-connectivity-guide-9499.html

    OM4: Supports 10 Gbps up to 550 meters.

    https://www.timbercon.com/resources/calculators/om1-om2-om3-and-om4-fiber/

    OM4 Not specified 500 m* 150 m 150 m
    *The IEEE has yet to officially give a distance for 10GBASE-S on OM4 fiber. The distances are decided by the IEEE in 802.3, not The TIA or ISO/IEC cabling standards. Some glass vendors say 500 m, but most are now quoting “up to 550m.”

    You absolutely can run OM4 at 10gbps at or over 500m depending on your optics/laser.

    But Multimode was never the point of discussion as the whole thread is based around broadband services (virtually none of it serviced by multimode, if any at all) and grant money for rural area coverage. Any fiber upgrade in this scenario will 100% be SMF with no qualifiers. In my past 30 years of IT career all buried and pole mounted fiber is SMF that I’ve ever seen for an ISP. I can tell you for certainty that ever fiber I’ve buried in the past 10 years for several companies has been SMF. I’m not even sure that I’ve touched MMF in the past 5 years even in intra-rack setups, I think I might have gotten some with a government auction win about 8 years ago I wanna say? With costs of SMF at near parity for the cable itself and getting closer every year in the modules… it’s a dying form factor and was never really in use for ISP services to begin with.



  • It is true.

    Multimode (what I think you’re trying to reference) isn’t used in distance applications at all, it’s only for short in-building links. Anything that your ISP would provide you would be single-mode. Carrier/Backbone is virtually 100% SMF as well. SMF (OS1 and OS2) don’t really have a bandwidth cap. It’s all transceivers not the fiber.

    But the point is that fiber that ALREADY in the ground, you can upgrade simply by changing the transceivers. It doesn’t matter the length, SMF/MMF, or anything else… you just get a transceiver rated for the length of run (power of the led/laser, and the optics). The length is irrelevant otherwise as the presumption is that the install in the ground has been shown to work in the past already.

    Old standard ITU-G.652 single-mode has been made to push multi-petabit transfers in lab environments. The only change was the transceivers. And to be clear, ITU-G.652 was standardized in 1984. Nobody rips out the fiber from the ground (caveat is that the cable itself hasn’t degraded). You just upgrade the optics/transceivers.


    “It’s not the fiber that’s limiting—ITU-T G.652 defines physical specs (dispersion, attenuation), not throughput. Field trials over 96.5 km of real-world G.652 fiber showed 56.5 Tb/s using advanced DWDM and modulation

    source: https://arxiv.org/abs/2108.01873




  • Check again…

    That’s “free space”. The 414 represents ~62% of my space (38% used). I’m at just under 700 for usable space. And 2 disks are out of the array at the moment because the backplane went stupid. Turns out that it’s a pain in the ass to open server chassis to replace a backplane when you have to unmount 70 disks. And I’m pretty lazy.

    6 x RAIDZ2 | 10 wide | 14.55 TiB
    873TiB raw.
    960TB raw.

    This graph might be better…



  • good

    Heaven and hell isn’t for “good” or “bad” people. It’s for believers and non-believers.

    You can be the most “good” person ever, but if you don’t believe in “God” (or Jesus, or whatever) you’re not going to heaven.

    Inversely, you could be literally Hitler + Mao and genocide an entire population… but as long as you REALLY believe in Jesus and repent seconds before you die! (or whatever figurative loophole probably exists in your religion of choice).

    So if I hit some pearly gates when I die, sign me up for Hell please…

    I guess I just agree with your statement… but take mild issue with “good”.