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85 lines
2.8 KiB
Python
85 lines
2.8 KiB
Python
#
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# This file is part of Pretty Curved Privacy (pcp1).
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#
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# Copyright (C) 2013-2015 T. von Dein.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# You can contact me by mail: <tlinden AT cpan DOT org>.
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#
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from pypcp.dll import *
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from pypcp.context import *
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class Key(object):
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"""
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A libpcp secret key object.
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"""
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def __init__(self, owner=None, mail=None, sk=None, encoded=None, passphrase=None):
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"""
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Create a new secret key or import one.
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If 'owner' or 'mail' are set, a new secret key will be generated.
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If 'encoded' is provided, a key will be imported, 'encoded' can be a file
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handle (returned by open()) or a python string. If the key is encrypted,
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you need to supply 'passphrase' as well.
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Without arguments an empty key object will be used. Don't do that.
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"""
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self._sk = None
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if owner or mail:
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# generate new one
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if not owner:
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owner=''
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if not mail:
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mail=''
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self.generate(owner, mail)
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elif sk:
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# use the raw sk
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self._sk = sk
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elif encoded:
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# import an encoded key
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self.importkey(Context(), encoded, passphrase)
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else:
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self._sk = ffi.new("struct _pcp_key_t*")
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# just for convenience
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for key, value in convert_to_python(self._sk).iteritems():
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self.__setattr__(key, value)
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def importkey(self, context, encoded=None, passphrase=None):
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"""
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Internal method to import a key from the outside.
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"""
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sk = libpcp.pcp_import_secret(context._ctx, encoded, len(encoded), passphrase)
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if not sk:
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context.throw(IOError, "failed to import key")
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self._sk = sk
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def generate(self, owner=None, mail=None):
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"""
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Internal method to generate a new secret key.
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"""
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self._sk = libpcp.pcpkey_new()
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if owner:
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libpcp.pcpkey_setowner(self._sk, owner, mail)
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def dump(self):
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"""
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Dump the contents of the key to STDERR.
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"""
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if self._sk:
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libpcp.pcp_dumpkey(self._sk)
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