Formerly u/CanadaPlus101 on Reddit.

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Cake day: June 12th, 2023

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  • Thanks for the effortpost! Scuttlebutt in particular is similar in spirit, although I agree with the blog post that the implementation sounds funny. One conceptual difference, I think, is Scuttlebutt sounding fully decentralised, which necessarily introduces an O(n2) kind of overhead. Hubs could operate more like the content distribution networks that already exist in really locked-down countries, which are proven to work, just with the new protocol as a lower risk way of getting to the end user. Their own page is loading blank for me, unfortunately.

    Public keys were identities, and were bound to devices; unfortunately people may have multiple devices, or change devices over time, so this was a hindrance.

    I’m not sure why even they added that, haha. How hard is moving a private key? I’m also imagining it would be pretty routine to just discard a key-identity and make a new one, for anonymity’s sake.

    I mention all these because, in an extreme censorship environment, any local state (session history on paper, an app on a smartphone, an odd device) might not be good to have around. So usability may require reducing the total amount of state that a command carries. The current working directory at the time a command is run changes the meaning and outcome of the command; you may not remember that directory in a day or two. The vocabulary and syntax of command-line switches are easy to look up in online manuals - but are there offline manuals? I don’t know if this avenue of inquiry helps you, but it’s interesting to think about for a moment.

    Some local state is probably necessary for usability. I mean, at the very least you need to have the software, which is probably illegal itself. The trick, as always with contraband, is either hiding it or not getting searched in the first place. In emergency situations having a way to securely delete everything quickly is the best that can be done, I think.

    I don’t expect the average user wouldn’t be writing shell scripts themselves. There should be user-friendly frontends for common tasks like email messaging, but that doesn’t help developers. A certain level of statelessness at the hub end would be good, just to avoid unwanted interactions like that. Maybe execution always starts with the same environment variables in the same directory, and your payload bootstraps other shell scripts or actual programs needed to add context.



  • Probably Rust, although I’m not married to it. I’m just at the planning stage right now, though.

    One open question is if you can use a fairly standard transceiver like a Bluetooth chip, or if you need an SDR. Obviously they weren’t designed with this in mind, by maybe there’s a profile that’s close enough.

    Packets should have a few kilobytes of payload so you can fit a postquantum cryptographic artifact. Thankfully, even with a BCH code, it seems doable to fit that much in a 1-second burst in a standard amateur radio voice channel, for testing. (In actual clandestine use I’d expect you’d want to go as wide as the hardware can support)

    As envisioned there would be someone operating a hub, which might have actual network access through some means, and on which the containers run. They would send out runners to collect traffic from busy public spaces which might serve as hubs for burst activity, and dump outgoing packets, all without giving up any locations.

    Accounts with their own small container would be opened by sending in a public key, and then further communication would be by standard symmetric algorithm - except in testing, because that’s an amateur radio no-no, so just signed cleartext. ID would be derived from signature fingerprint, as I have been thinking about it. I have a lightweight hash scheme in mind that would allow awarding of credit for retransmitting packets in a way that couldn’t be cheated.

    You’d want to have some ability to detect and move around jamming, or just other people’s bursts. That’s more hardware research, basically.













  • Yeah, I know, I’m not arguing against electric now, or even as a concept then. This was an alt-history exercise, remember?

    Batteries could have been standard for a bit longer, but it seems to me that eventually the need to go faster for longer would have forced combustion engines to be a thing. All they had were lead-acid batteries (or primary cells, but that would be dumb) and new more energy-dense chemistries didn’t show up for a long time after. Maybe they could have found one if they really needed, but it’s a tricky science even today, so I’m skeptical.

    It’s possible, I suppose, that infrastructure could have been rolled out for both en mass, but I don’t see an even mix lasting through the whole 20th century. Probably not even past WWII.




  • Or, y’know, there’s a war on and you can’t stop to recharge, or you need to cross a desert, or you just want to do an express route with one vehicle…

    Combustion is just a superior vehicle technology vs. lead-acid electric, assuming you don’t worry about emissions, and that will show up in plenty of contexts. Eventually, lead-acid would go the way of the other workable-but-not-as-nice technologies like crystal radios or black-and-white film.