wg-vanity

#!/bin/sh

# Simple, stupid, slow wg(8) vanity key generator
# ./$0 pattern
#
# pattern MUST be lowercase. If it isn't, there won't be any match.
#
# Local tests (OCed 7700K@4.1GHz) suggest that this script tries 50000 keypairs
# in <120 seconds. Far fewer than
# https://github.com/warner/wireguard-vanity-address claims, but I tried using
# it and it gave me no match :(
# 

while : ; do
  priv="$(wg genkey)"
  case "$(printf '%s\n' "$priv" | wg pubkey | tr [:upper:] [:lower:])" in
    *${1}*) printf 'priv %s pub %s\n' "$priv" "$(printf '%s\n' "$priv" | wg pubkey)";;
    *) : ;;
  esac
done