CREATE FUNCTION public.password_hash(salt_hex char(32), pass bytea)
RETURNS char(96)
LANGUAGE plpgsql
AS
$$
BEGIN
	RETURN (
		SELECT
			salt_hex ||
			encode(
				sha256(
					decode(salt_hex, 'hex') || /* salt in binary */
					pass                       /* password */
				),
				'hex'
			)
	);
END;
$$;