possessor

The rightful possessor of the stolen jewels was finally identified by the police.

(Chinese) 被盗珠宝的合法拥有者最终被警方确认。

As the possessor of the secret code, he was the only one who could unlock the vault.

(Chinese) 作为秘密代码的掌握者，他是唯一能打开金库的人。