dotat ssh-box: use ssh keys to encrypt files

ssh-box: use ssh keys to encrypt files

work in progress

documentation

repositories

licence

This was written by Tony Finch <dot@dotat.at>
You may do anything with it. It has no warranty.
https://creativecommons.org/publicdomain/zero/1.0/
SPDX-License-Identifier: CC0-1.0