nixos-config/nixos/system/all/sshd-known-hosts-bootup.nix

{ config, lib, pkgs, ... }:
with lib;
let

  computers = {
    pepe = {
      onionId = fileContents ../../private_assets/onion_id_pepe;
      # SHA256:aOZbqpgc5CcTNtRAzjuG/0BQZ9MF5c9u/N+UC88y8kI
      publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIB5K4UHD8cIcXB33UiOj5vyXJj+4CyyiLFDMwcyad92a";
    };

  };

in
{

  services.openssh.knownHosts = {
    "robi-init-ssh" = {
      hostNames = [
        "[robi]:2222"
        "[144.76.13.147]:2222"
      ];
      # SHA256:rhvbJ84cPXXezaoJiY7tFsG8CJxI2F/lLKz8q+xUW+g
      publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMKQ7XB6Cs9FJmHkuZ9ihbj76WsK0uJBh882ceyKaaKJ";
    };
  } // (mapAttrs'
    (name:
      { onionId, publicKey, ... }: {
        name = "${name}-init-ssh";
        value = {
          hostNames = [ "[${onionId}]:2222" ];
          inherit publicKey;
        };
      })
    computers);

  environment.systemPackages =
    let

      ssh = mapAttrsToList
        (name:
          { onionId, ... }:
          pkgs.writers.writeDashBin "ssh-boot-to-${name}" ''
            ${pkgs.tor}/bin/torify ${pkgs.openssh}/bin/ssh root@${onionId} -p 2222
          '')
        computers;

      password = mapAttrsToList
        (name:
          { onionId, ... }:
          pkgs.writers.writeDashBin "unlock-boot-${name}" ''
            ${pkgs.tor}/bin/torify ${pkgs.openssh}/bin/ssh root@${onionId} -p 2222 '
            echo -n "enter password : "
            read password
            echo "$password" > /crypt-ramfs/passphrase
            '
          '')
        computers;

    in
    ssh ++ password;

}