# /usr/local/pgsql/bin/psql -d <db> -U <user> < hkey.sql
Then alter "v_use_hkey := false" to "v_use_hkey := true" in both the
-decrypt_replicated_users and encrypt_replicated_users functions.
+decrypt_replicated_users and encrypt_replicated_users functions.
+Note the pgcrypto contrib module is required for this.