$ ls¶ crypt.txt.asc himitsu.txt himitsu.txt.asc shomei.txt shomei.txt.asc $ cat crypt.txt.asc¶ -----BEGIN PGP MESSAGE----- hQGMA4y0Nh4R5WLaAQv9EMsVdYRn1/VzJGiTWhZpFUXw3TAghxSr61vPmDRDrmCe NHGfO0UX1q71sIjx95O6IEsamKagpsgc+Obtl1nnJ7O0HDFJylVShyFXmqSVMV+K d6z1M02KQ46auNAZ+KOKIJGc7wRfp10yFdWzvwU7H/fFG/kajx7HRya8CXCus1ce FPKA3CYWh2A6YMpmvYpScCq4RVYYPhPZdBE/etO8IltqUk0C1qgcGvc+1E0fx8Xp fdfgwdg8aqeBI9dmkQltU8ItJNVWwNavgKxDiRXDeeWy4CUDNXd1D2JB/nOO4WXU FE4kAy/FHLMKicSkvEXTXWwSKKkdifiX2yBQNPL3xf/N4YBIkH7cOUGchgrNTGBA Lwe4XDjH2XwKdBU9/eapkyGqbA5Z7JAJnNZV8OF6n4LQUuAUJbtpp809l/Ryrd6P vAEe5Iuqs7hacUPs2NRBri7tbih10FBJqJLVvPRi+ZdfZgWZPZjT3bsXDLaCZcbZ JG/KN1/q4E8nJ2wCvcGy0lwBEO011IfM335NrWpIkOeBPVUgrEBxnfHs4m7sxo4j y0CBJ1rzMtpuOWNv17ijlSd7T98Pmnu1VA87G5Rv2i3NsUJ8xK9LrzbSkeuKdSJm kTslu0FKRBiKdX50eg== =V/AP -----END PGP MESSAGE----- $ gpg -d crypt.txt.asc¶ gpg: RSA鍵, ID 8CB4361E11E562DAで暗号化されました gpg: 復号に失敗しました: 秘密鍵がありません $