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Is there anyway for the signal to be bulk encrypted in realtime and have the cryptographic key between two end points automatically cycled and exchanged via mea
by malandrew 13y ago
Is there anyway for the signal to be bulk encrypted in realtime and have the cryptographic key between two end points automatically cycled and exchanged via means other than that cable?
I would imagine that making a cryptographically secure wired connection impervious to eavesdropped would be a thing by now.
- charliesome 13y agoIt's already possible for two end points to securely decide on a cryptographic key in a way that's impervious to eavesdropping: https://en.wikipedia.org/wiki/Diffie-Hellman_key_exchange https://en.wikipedia.org/wiki/Diffie-Hellman_key_exchange
- visarga 13y ago> Is there anyway for the signal to be bulk encrypted in realtime and have the cryptographic key between two end points automatically cycled and exchanged via means other than that cable? They could use one time pads (two identical lists of pregenerated random numbers) at the ends. Then XOR the traffic with those. It's unbreakable. They "key" could be terabytes long.
- jordanthoms 13y agoA terabyte of shared secret would run out in seconds on these links. (and if you reuse it, it's extremely insecure). It's totally possible (but possibly prohibitively expensive) to encrypt the traffic going through a link like this but a OTP is _not_ how you would do it.
- deleted 13y ago[deleted]