138 lines
4.3 KiB
Python
138 lines
4.3 KiB
Python
# $Id$
|
|
"""
|
|
Pyme: GPGME Interface for Python
|
|
Copyright (C) 2004 Igor Belyi <belyi@users.sourceforge.net>
|
|
Copyright (C) 2002 John Goerzen <jgoerzen@complete.org>
|
|
|
|
This library 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 library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
Welcome to PyME, the GPGME Interface for Python. "Pyme", when prounced,
|
|
rhymes with "Pine".
|
|
|
|
The latest release of this package may be obtained from
|
|
http://pyme.sourceforge.net
|
|
Previous releases of this package can be obtained from
|
|
http://quux.org/devel/pyme/
|
|
|
|
FEATURES
|
|
--------
|
|
|
|
* Feature-rich, full implementation of the GPGME library. Supports
|
|
all GPGME features except interactive editing (coming soon).
|
|
Callback functions may be written in pure Python.
|
|
|
|
* Ability to sign, encrypt, decrypt, and verify data.
|
|
|
|
* Ability to list keys, export and import keys, and manage the keyring.
|
|
|
|
* Fully object-oriented with convenient classes and modules.
|
|
|
|
GENERAL OVERVIEW
|
|
----------------
|
|
|
|
For those of you familiar with GPGME, you will be right at home here.
|
|
|
|
Pyme is, for the most part, a direct interface to the C GPGME
|
|
library. However, it is re-packaged in a more Pythonic way --
|
|
object-oriented with classes and modules. Take a look at the classes
|
|
defined here -- they correspond directly to certain object types in GPGME
|
|
for C. For instance, the following C code:
|
|
|
|
gpgme_ctx_t context;
|
|
|
|
gpgme_new(&context);
|
|
|
|
...
|
|
gpgme_op_encrypt(context, recp, 1, plain, cipher);
|
|
|
|
Translates into the following Python code:
|
|
|
|
context = core.Context()
|
|
...
|
|
context.op_encrypt(recp, 1, plain, cipher)
|
|
|
|
The Python module automatically does error-checking and raises Python
|
|
exception pyme.errors.GPGMEError when GPGME signals an error. getcode()
|
|
and getsource() of this exception return code and source of the error.
|
|
|
|
IMPORTANT NOTE
|
|
--------------
|
|
This documentation only covers a small subset of available GPGME functions and
|
|
methods. Please consult the documentation for the C library
|
|
for comprehensive coverage.
|
|
|
|
This library uses Python's reflection to automatically detect the methods
|
|
that are available for each class, and as such, most of those methods
|
|
do not appear explicitly anywhere. You can use dir() python built-in command
|
|
on an object to see what methods and fields it has but their meaning can
|
|
be found only in GPGME documentation.
|
|
|
|
QUICK START SAMPLE PROGRAM
|
|
--------------------------
|
|
This program is not for serious encryption, but for example purposes only!
|
|
|
|
import sys
|
|
from pyme import core, constants
|
|
|
|
# Set up our input and output buffers.
|
|
|
|
plain = core.Data('This is my message.')
|
|
cipher = core.Data()
|
|
|
|
# Initialize our context.
|
|
|
|
c = core.Context()
|
|
c.set_armor(1)
|
|
|
|
# Set up the recipients.
|
|
|
|
sys.stdout.write("Enter name of your recipient: ")
|
|
name = sys.stdin.readline().strip()
|
|
c.op_keylist_start(name, 0)
|
|
r = c.op_keylist_next()
|
|
|
|
# Do the encryption.
|
|
|
|
c.op_encrypt([r], 1, plain, cipher)
|
|
cipher.seek(0,0)
|
|
print cipher.read()
|
|
|
|
Note that although there is no explicit error checking done here, the
|
|
Python GPGME library is automatically doing error-checking, and will
|
|
raise an exception if there is any problem.
|
|
|
|
This program is in the Pyme distribution as examples/simple.py. The examples
|
|
directory contains more advanced samples as well.
|
|
|
|
FOR MORE INFORMATION
|
|
--------------------
|
|
PYME homepage: http://pyme.sourceforge.net
|
|
GPGME documentation: http://pyme.sourceforge.net/doc/gpgme/index.html
|
|
GPGME homepage: http://www.gnupg.org/gpgme.html
|
|
|
|
Base classes: pyme.core (START HERE!)
|
|
Error classes: pyme.errors
|
|
Constants: pyme.constants
|
|
Version information: pyme.version
|
|
Utilities: pyme.util
|
|
|
|
Base classes are documented at pyme.core.
|
|
Classes of pyme.util usually are not instantiated by users
|
|
directly but return by methods of base classes.
|
|
|
|
"""
|
|
|
|
__all__ = ['core', 'errors', 'constants', 'util', 'callbacks', 'version']
|