| ▲ | ianburrell 9 days ago |
| There isn't enough bandwidth in HF to transmit data. Digital HF audio is 20 kHz wide so maybe 50kbps. The entire HF band is only 3-30 MHz. |
|
| ▲ | tzs 9 days ago | parent | next [-] |
| 50 kb/s x 1000 bits/kb x 3600 s/hr x 24 hr/day x 1 byte/8 bits x 1 MB / 1000000 bytes = 540 MB/day. That's enough to download VPN software and a Linux distribution to run it on in a day. If you've already got a Linux system, the Debian openvpn package is under 1 MB and at 50 kb/s would take under 3 minutes to download. I don't know if openvpn in particular is suitable for people who are trying to evade their government, but would whatever features it is missing add substantially more size? |
| |
| ▲ | mrdomino- 9 days ago | parent | next [-] | | Yeah, you could use forward error correction too, so any n bits would be enough to reconstruct the input. Of course then you get into needing software to decode the more advanced encodings; maybe start with a voice transmission explaining in plain language how to decode the first layer, which gives you a program that can decode the second layer, or something. Starting to sound like an interesting project. | |
| ▲ | jdkdbrnrnrb 9 days ago | parent | prev | next [-] | | You never used dialup did you? | | |
| ▲ | anonzzzies 9 days ago | parent | next [-] | | 300 baud. Was enough to download grainy porn pics. With a proper download tool that continues after hangups etc you can just leave it on for a week and I have when downloading software end 70s. No problem. Also via the airwaves: we had software via the radio every sunday. Works fine. Modern software is shitty large: it would be nice if a VPN provider would just release the driver and a cli which should not weigh over a mega (far less but outside mr Whitney i am not sure if that type of software dev still exists) for this type of transfer. | |
| ▲ | tzs 8 days ago | parent | prev | next [-] | | 9600 bps dialup using the protocols commonly used back then such as ZMODEM could do file transfers at 3 MB/hour. That would be fine for grabbing VPN software. | |
| ▲ | kingforaday 9 days ago | parent | prev [-] | | zmodem to the rescue! |
| |
| ▲ | jchook 8 days ago | parent | prev | next [-] | | Wireguard ships with the Linux kernel so you only need to receive ~60 bytes of configuration information. | | |
| ▲ | immibis 8 days ago | parent | next [-] | | Wireguard is also easily censored and is already censored in the places that censor VPNs. | |
| ▲ | teiferer 8 days ago | parent | prev [-] | | The user-facing software is not included in the kernel, but you need that to configure wireguard. | | |
| ▲ | jchook 8 days ago | parent [-] | | Is that true? I thought wg-quick etc were just convenience functions and that it's relatively trivial to use iproute2 to configure a VPN link | | |
|
| |
| ▲ | lormayna 5 days ago | parent | prev | next [-] | | HF are really noisy. You need a lot of error correction to ensure that the package is consistent and without any error. This will drastically decrease the real bit rate. | |
| ▲ | 9 days ago | parent | prev [-] | | [deleted] |
|
|
| ▲ | zack6849 9 days ago | parent | prev | next [-] |
| sure there is, you can send files over HF, it may not be FAST, but once you get it into the country, you can just copy the file with a faster method (eg: usb drive), WINLINK supports attachments, so you could absolutely send these files over HF |
| |
| ▲ | smallnamespace 9 days ago | parent | next [-] | | If you're going to be using USB drives anyway, then using them to move files into the country would be faster. | | |
| ▲ | nine_k 9 days ago | parent [-] | | More dangerous though. You'd need something like truecrypt, too. | | |
| ▲ | youainti 9 days ago | parent | next [-] | | btw, veracrypt is the name if the follow up project. truecrypt shut down over a decade ago rather abruptly, so anything labeled truecrypt today is suspect as either out of date or potential malware. | | |
| ▲ | cheeseomlit 8 days ago | parent [-] | | Wasn't the conspiracy theory that truecrypt got shut down because it was 'too effective', and the successor projects presumably have intentional backdoors or something? | | |
| ▲ | rOOb85 7 days ago | parent [-] | | Truecrypt was likely developed by only 1 man, Paul le roux, who likely shut it down because he was on the run for being an international drug/human smuggler/cartel member. It’s kind of a crazy story. But either way both truecrypt and veracrypt were independently audited and no major flaws were found. Not sure when the last veracrypt audit was done. |
|
| |
| ▲ | estimator7292 9 days ago | parent | prev [-] | | Nah, just drop a few thousand 1GB flash drives from a plane. Load them with a tor browser, a wireguard client, and instructions on finding a remote exit. Only one copy needs to survive and it can spread very quickly and irreversibly by foot. | | |
| ▲ | ZaoLahma 8 days ago | parent | next [-] | | Yeah, this is a great approach if you're already at war with a country. If you're not and they're still allowing your planes to fly through their airspace then this is a great way to ensure that they lock your (and your friends') planes out. | | |
| ▲ | chipsrafferty 7 days ago | parent [-] | | Drop them from commercial planes via the toilet? | | |
| ▲ | daflip 6 days ago | parent [-] | | When you flush the toilet in an airplane the contents is normally vacuumed in to a holding tank which gets emptied after the plane lands. | | |
|
| |
| ▲ | GJim 8 days ago | parent | prev [-] | | Plugging in a strange USB drive? What could go wrong. | | |
|
|
| |
| ▲ | GoblinSlayer 8 days ago | parent | prev [-] | | Or just google drive. | | |
|
|
| ▲ | pythonguython 8 days ago | parent | prev | next [-] |
| I’m not familiar with any HF comms channels other than military or broadcasting that get 20 kHz of bandwidth. Most HF modes get 3 kHz. You might be able to get 5 kbps at 3 kHz BW with some modern modes that can adapt to the frequency selective non stationary channel. |
|
| ▲ | transcriptase 9 days ago | parent | prev [-] |
| Wait until you find out what people used to do with phone lines! |
| |
