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You want data diodes that physically enforce one-way-only data transfer. Tin Foil Chat[1] has a circuit for an opto-isolator based data diode and a discussion
by pdkl95 10y ago
You want data diodes that physically enforce one-way-only data transfer.
Tin Foil Chat[1] has a circuit for an opto-isolator based data diode and a discussion of how to use them for secure chat. It's probably not hard to modify these plans for other uses, if the specific guarantees that TFC provides are compatible with your secure computing requirements.
[1] https://cs.helsinki.fi/u/oottela/tfc.pdf https://cs.helsinki.fi/u/oottela/tfc.pdf
- jacquesm 10y agoRouting the data through a central IM server is a huge problem, it would still allow one to figure out who is talking to who and when.
- nickpsecurity 10y agoIt's not hard to adapt. He regularly improved it based on our feedback at Schneier's blog. I speculated that a higher bandwidth would allow audio and video using same architecture. It's a great desigm regardless due yo strong confidentiality despite endpoint attacks.
- DenisM 10y agoVery interesting... so one machine for sending data (one-way channel) and another machine fro receiving data (also a one-way channel). That, in combination with a one-way serial port, might just suffice.