Quote from: daedalus on November 05, 2019, 06:08:31 AMI have several queries related to encryption :

1) It is my understanding that encryption is only banned for Ham transmissions, there doesn't seem to be any such restriction for the non ham, this opens the door to experiment with encryption methods that could be used after a disaster

2) What encryption method would likely emerge as the dominant standard assuming no internet and therefore no side channel or central repository to pass keys etc

3) How easy would it be to encrypt voice using ham SDR transceiver

Hi.

ad 1:
Yes, ham radio is due to international regulations experimental and therefore to be in open speech without any encryption.
On comercial (non ham radio) channels you are free to use any encryption method you want.

ad 2:
It's nearly impossible without any preparations in normal times. As we learn from comercial or military applications you have to prepare the ways to encrypt your communication.
No matter what you choose - OTP, openPGP - or any other method you have to exchange relevant information or documents before use.

ad 3:
Use google and you will find a lot of hints. But enc with a HAM-SDR on ham frequencies is not allowed.