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Right. The Tinfoil Chat setup uses optocouplers to enforce one-way data transmission.[0] And one can use inexpensive CD-R and micro SD cards for single-use dat
by mirimir 6y ago
Right.
The Tinfoil Chat setup uses optocouplers to enforce one-way data transmission.[0] And one can use inexpensive CD-R and micro SD cards for single-use data transfer. But transferring anything but plain text is dangerous.
0) https://github.com/maqp/tfc https://github.com/maqp/tfc
- infokiller 6y agoThanks for mentioning the octocouplers implementation, it looks very interesting and I'll look it. Other options I'm aware of to avoid USB and complex drivers/protocols: - Scanning QR codes (for example https://air-gap.it/ https://air-gap.it/) - Audio codes (for example https://github.com/romanz/amodem https://github.com/romanz/amodem)
- mirimir 6y agoWow. That is very cool. Edit: https://air-gap.it/ https://air-gap.it/ seems down. But https://github.com/airgap-it https://github.com/airgap-it is up. I wonder if one could cut up QR codes, and store pieces separately. If that were done in Gimp or whatever, there could be multiple copies of each piece.
- infokiller 6y agoDo you mean sharding them using something like Shamir Secret Sharing, splitting in order to be able to transfer/store a large blob, or something else?
- mirimir 6y agoI meant actually cutting them with a sharp knife, or scissors. So you could hide pieces in different places. For stuff like URLs, passphrases, wallet seeds, etc.