Re:Intruder at the top of the 20 meter amateur band?
by ukd1 on Monday January 11, 2021 @09:36PM
(#25741544)
...it will be encrypted
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Re:Intruder at the top of the 20 meter amateur band?
by snypher on Monday January 11, 2021 @09:41PM
(#25741570)
How much time does encryption take? I'd wager the fastest links are close to plaintext.
Re:Intruder at the top of the 20 meter amateur band?
by baobrien on Monday January 11, 2021 @11:48PM
(#25742411)
Stream ciphers can operate without adding any extra delay and are considered plenty strong.
Re:Intruder at the top of the 20 meter amateur band?
by KirillPanov on Tuesday January 12, 2021 @12:17AM
(#25742617)
At HF bitrates they can use a one-time pad. The only unbreakable cipher.
A single hard drive shipped (or hand-delivered) to each transmitter location ought to last a decade.
Re:Intruder at the top of the 20 meter amateur band?
by tlrobinson on Tuesday January 12, 2021 @04:38AM
(#25744430)
No need to ship a hard drive, just send it over the regular internet.
It would be an interesting exercise to design an encryption and compression protocol that has a high bandwidth/high latency link and a low bandwidth/low latency link working together.
Re:Intruder at the top of the 20 meter amateur band?
by KirillPanov on Tuesday January 12, 2021 @06:50PM
(#25755780)
> No need to ship a hard drive, just send it over the regular internet.
Well, then it isn't an unbreakable cipher anymore.
It's only as strong as whatever encryption you used to transmit the pad over the clearnet. If you were using a one-time pad to do that then you used up the pad in the process, so you could've just told the reciever to transfer the pad from their internet-decryptor to their HF-radio decryptor.