From 7ab42e79ade89f28507ea42d51148a40b4bfc736 Mon Sep 17 00:00:00 2001 From: Ben McGinnes Date: Tue, 20 Mar 2018 09:25:34 +1100 Subject: example: encrypt file * Example to encrypt a file to a single key. * Takes key ID and/or fpr as a CLI parameter. * Takes path and filename as a CLI parameter. * Encrypts to specified key only, no signing and writes the output in both ASCII armoured and GPG binary formats with output filenames based on input filename. --- lang/python/examples/howto/encrypt-file.py | 64 ++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100755 lang/python/examples/howto/encrypt-file.py (limited to 'lang/python/examples/howto/encrypt-file.py') diff --git a/lang/python/examples/howto/encrypt-file.py b/lang/python/examples/howto/encrypt-file.py new file mode 100755 index 00000000..718c7157 --- /dev/null +++ b/lang/python/examples/howto/encrypt-file.py @@ -0,0 +1,64 @@ +#!/usr/bin/env python3 +# -*- coding: utf-8 -*- + +from __future__ import absolute_import, division, unicode_literals + +# Copyright (C) 2018 Ben McGinnes +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation; either version 2 of the License, or (at your option) any later +# version. +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU Lesser General Public License as published by the Free +# Software Foundation; either version 2.1 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License and the GNU +# Lesser General Public Licensefor more details. +# +# You should have received a copy of the GNU General Public License and the GNU +# Lesser General Public along with this program; if not, see +# . + +import gpg +import sys + +""" +Encrypts a file to a specified key. If entering both the key and the filename +on the command line, the key must be entered first. + +Will produce both an ASCII armoured and GPG binary format copy of the encrypted file. +""" + +if len(sys.argv) > 3: + a_key = sys.argv[1] + filename = " ".join(sys.argv[2:]) +elif len(sys.argv) == 3: + a_key = sys.argv[1] + filename = sys.argv[2] +elif len(sys.argv) == 2: + a_key = sys.argv[1] + filename = input("Enter the path and filename to encrypt: ") +else: + a_key = input("Enter the fingerprint or key ID to encrypt to: ") + filename = input("Enter the path and filename to encrypt: ") + +rkey = list(c.keylist(pattern=a_key, secret=False)) +with open(filename, "rb") as f: + text = f.read() + +with gpg.Context(armor=True) as ca: + ciphertext, result, sign_result = ca.encrypt(text, recipients=rkey, + sign=False) + with open("{0}.asc".format(filename), "wb") as fa: + fa.write(ciphertext) + +with gpg.Context() as cg: + ciphertext, result, sign_result = ca.encrypt(text, recipients=rkey, + sign=False) + with open("{0}.gpg".format(filename), "wb") as fg: + fg.write(ciphertext) -- cgit v1.2.3 From f0790f224d7af9521efe96e69a8f719fb89a5af2 Mon Sep 17 00:00:00 2001 From: Ben McGinnes Date: Tue, 20 Mar 2018 09:39:48 +1100 Subject: example: encrypt file * Fixed typo in second encryption call. --- lang/python/examples/howto/encrypt-file.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lang/python/examples/howto/encrypt-file.py') diff --git a/lang/python/examples/howto/encrypt-file.py b/lang/python/examples/howto/encrypt-file.py index 718c7157..8aee52ad 100755 --- a/lang/python/examples/howto/encrypt-file.py +++ b/lang/python/examples/howto/encrypt-file.py @@ -58,7 +58,7 @@ with gpg.Context(armor=True) as ca: fa.write(ciphertext) with gpg.Context() as cg: - ciphertext, result, sign_result = ca.encrypt(text, recipients=rkey, + ciphertext, result, sign_result = cg.encrypt(text, recipients=rkey, sign=False) with open("{0}.gpg".format(filename), "wb") as fg: fg.write(ciphertext) -- cgit v1.2.3 From 7221bb67642eb01a07957d66d0cbcd4ef8aadbf8 Mon Sep 17 00:00:00 2001 From: Ben McGinnes Date: Tue, 20 Mar 2018 09:53:27 +1100 Subject: example: encrypt file * Nested encryption in try/except statement in case recipient key is untrusted or invalid. --- lang/python/examples/howto/encrypt-file.py | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) (limited to 'lang/python/examples/howto/encrypt-file.py') diff --git a/lang/python/examples/howto/encrypt-file.py b/lang/python/examples/howto/encrypt-file.py index 8aee52ad..017a3421 100755 --- a/lang/python/examples/howto/encrypt-file.py +++ b/lang/python/examples/howto/encrypt-file.py @@ -52,13 +52,19 @@ with open(filename, "rb") as f: text = f.read() with gpg.Context(armor=True) as ca: - ciphertext, result, sign_result = ca.encrypt(text, recipients=rkey, - sign=False) - with open("{0}.asc".format(filename), "wb") as fa: - fa.write(ciphertext) + try: + ciphertext, result, sign_result = ca.encrypt(text, recipients=rkey, + sign=False) + with open("{0}.asc".format(filename), "wb") as fa: + fa.write(ciphertext) + except gpg.errors.InvalidRecipients as e: + print(e) with gpg.Context() as cg: - ciphertext, result, sign_result = cg.encrypt(text, recipients=rkey, - sign=False) - with open("{0}.gpg".format(filename), "wb") as fg: - fg.write(ciphertext) + try: + ciphertext, result, sign_result = cg.encrypt(text, recipients=rkey, + sign=False) + with open("{0}.gpg".format(filename), "wb") as fg: + fg.write(ciphertext) + except gpg.errors.InvalidRecipients as e: + print(e) -- cgit v1.2.3 From 6fa2a344282e369e6aca8155bc77dd2c12a29414 Mon Sep 17 00:00:00 2001 From: Ben McGinnes Date: Thu, 22 Mar 2018 01:24:52 +1100 Subject: examples: doc strings * Fixed minor errors in two doc strings. --- lang/python/examples/howto/encrypt-file.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'lang/python/examples/howto/encrypt-file.py') diff --git a/lang/python/examples/howto/encrypt-file.py b/lang/python/examples/howto/encrypt-file.py index 017a3421..877226d0 100755 --- a/lang/python/examples/howto/encrypt-file.py +++ b/lang/python/examples/howto/encrypt-file.py @@ -31,7 +31,8 @@ import sys Encrypts a file to a specified key. If entering both the key and the filename on the command line, the key must be entered first. -Will produce both an ASCII armoured and GPG binary format copy of the encrypted file. +Will produce both an ASCII armoured and GPG binary format copy of the encrypted +file. """ if len(sys.argv) > 3: -- cgit v1.2.3 From 7ddff71908a85111c8e0da41312197b3b1a77da6 Mon Sep 17 00:00:00 2001 From: Ben McGinnes Date: Thu, 22 Mar 2018 06:05:10 +1100 Subject: examples: encryption * Fixed two incorrect Context() objects. --- lang/python/examples/howto/encrypt-file.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lang/python/examples/howto/encrypt-file.py') diff --git a/lang/python/examples/howto/encrypt-file.py b/lang/python/examples/howto/encrypt-file.py index 877226d0..ad4e1cef 100755 --- a/lang/python/examples/howto/encrypt-file.py +++ b/lang/python/examples/howto/encrypt-file.py @@ -48,7 +48,7 @@ else: a_key = input("Enter the fingerprint or key ID to encrypt to: ") filename = input("Enter the path and filename to encrypt: ") -rkey = list(c.keylist(pattern=a_key, secret=False)) +rkey = list(gpg.Context().keylist(pattern=a_key, secret=False)) with open(filename, "rb") as f: text = f.read() -- cgit v1.2.3