宇田川浩行(希哲館)✅ is a user on mn.kitetu.com. You can follow them or interact with them if you have an account anywhere in the fediverse.
宇田川浩行(希哲館)✅ @hiro

これは任意のパスワードに URI と鍵の長さ分の乱為(ランダム)文字列が加わるようなもの。