Generate Tor v3 hidden service authorised client files

tor-gen-v3-client.sh

#!/usr/bin/env bash

set -euo pipefail

if [ "$#" -ne 2 ]; then
    echo "Usage: $0 onion client_name" >&2
    exit 1
fi

onion=$(<<<"$1" sed 's/[.]onion$//')
declare -r onion

declare -r client_name=$2

priv=$(mktemp)

openssl genpkey -algorithm x25519 -out "$priv" -outform der

tor_priv=$(tail -c32 "$priv" | base32 | tr -d =)
declare -r tor_priv

tor_pub=$(openssl pkey -in "$priv" -inform der -pubout -outform der | tail -c32 | base32 | tr -d =)
declare -r tor_pub

rm -f "$priv"

echo "$client_name.auth: descriptor:x25519:$tor_pub"
echo "$client_name.auth_private: $onion:descriptor:x25519:$tor_priv"