gpg passphrase 입력 후 멈춤

$ gpg -d
-----BEGIN PGP MESSAGE-----
Version: GnuPG v1
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=czba
-----END PGP MESSAGE-----

이런 식으로 할 때, passphrase를 입력한 뒤 막힐 때가 있다. (위 메시지는 encrypt한 메시지가 아니라 passphrase를 물어보지 않아 hang하지 않는다.)

이 때 passphrase를 입력한 뒤 Ctrl+D를 눌러야 해독된 메시지가 나온다.