$ gpg --list-secret-keys /home/9474079989/.gnupg/pubring.kbx ----------------------------------- sec rsa3072 2021-05-24 [SC] [有効期限: 2023-05-24] 3D517FB5E5AB4093654C9EC85D6F3FB278B30358 uid [ 究極 ] Yamaguchi at ECCS <1234567890@g.ecc.u-tokyo.ac.jp> ssb rsa3072 2021-05-24 [E] [有効期限: 2023-05-24] pcke50002m:practice 9474079989$ gpg --list-keys /home/9474079989/.gnupg/pubring.kbx ----------------------------------- pub rsa3072 2021-05-24 [SC] [有効期限: 2023-05-24] 3D517FB5E5AB4093654C9EC85D6F3FB278B30358 uid [ 究極 ] Yamaguchi at ECCS <1234567890@g.ecc.u-tokyo.ac.jp> sub rsa3072 2021-05-24 [E] [有効期限: 2023-05-24] pub rsa3072 2021-05-22 [SC] [有効期限: 2023-05-22] AD963D213404809184246803E48DA586F2CA8DA9 uid [ 充分 ] Joho Report sub rsa3072 2021-05-22 [E] [有効期限: 2023-05-22] pcke50002m:practice 9474079989$ pcke50002m:practice 9474079989$ gpg -r 1234567890@g.ecc.u-tokyo.ac.jp -ea himitsu.txt pcke50002m:practice 9474079989$ gpg -d himitsu.txt.asc gpg: 3072-ビットRSA鍵, ID DCC67339DFC0F3A0, 日付2021-05-24に暗号化されました "Yamaguchi at ECCS <1234567890@g.ecc.u-tokyo.ac.jp>" This file contains a secret. pcke50002m:practice 9474079989$ pcke50002m:practice 9474079989$ gpg -r report@joho.org -ea himitsu.txt ファイル'himitsu.txt.asc'は既に存在します。上書きしますか? (y/N) y pcke50002m:practice 9474079989$ ls crypt.txt.asc himitsu.txt report.pub sign.txt.asc enshu.priv himitsu.txt.asc shomei.txt pcke50002m:practice 9474079989$ gpg -d himitsu.txt.asc gpg: 3072-ビットRSA鍵, ID CD775BF035ADBE5D, 日付2021-05-22に暗号化されました "Joho Report " gpg: 復号に失敗しました: 秘密鍵がありません pcke50002m:practice 9474079989$