3a9e6a8e08
* Updated the decryption example code in the HOWTO and the corresponding decrypt-file.py script to gracefully handle a decryption failure. This error will always be triggered when GPGME is used to try to decrypt an old, MDC-less encrypted message or file.
52 lines
1.8 KiB
Python
Executable File
52 lines
1.8 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from __future__ import absolute_import, division, unicode_literals
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# Copyright (C) 2018 Ben McGinnes <ben@gnupg.org>
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation; either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License and the GNU
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# Lesser General Public Licensefor more details.
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#
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# You should have received a copy of the GNU General Public License and the GNU
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# Lesser General Public along with this program; if not, see
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# <http://www.gnu.org/licenses/>.
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import gpg
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import sys
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if len(sys.argv) == 3:
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ciphertext = sys.argv[1]
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newfile = sys.argv[2]
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elif len(sys.argv) == 2:
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ciphertext = sys.argv[1]
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newfile = input("Enter path and filename of file to save decrypted data to: ")
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else:
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ciphertext = input("Enter path and filename of encrypted file: ")
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newfile = input("Enter path and filename of file to save decrypted data to: ")
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with open(ciphertext, "rb") as cfile:
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try:
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plaintext, result, verify_result = gpg.Context().decrypt(cfile)
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except gpg.errors.GPGMEError as e:
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plaintext = None
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print(e)
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if plaintext is not None:
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with open(newfile, "wb") as nfile:
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nfile.write(plaintext)
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else:
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pass
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