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authorTomas Touceda <chiiph@leap.se>2013-05-03 14:36:42 -0300
committerTomas Touceda <chiiph@leap.se>2013-05-03 14:36:42 -0300
commitc0ab46487cf4a209f78c60271200a521f9ecb426 (patch)
tree8c9afdf7b68474bf51eb768ee7fadd1e36ea3189
parentf74c32a4a8e9eae9c8055c25d3848ff7d836e308 (diff)
parent71a3f21d3b72566efa6cf024317dfc96624a10f7 (diff)
Merge remote-tracking branch 'drebs/feature/key-manager' into develop
-rw-r--r--changes/feature_key-manager1
-rw-r--r--pkg/requirements.pip1
-rw-r--r--src/leap/common/keymanager/__init__.py286
-rw-r--r--src/leap/common/keymanager/errors.py46
-rw-r--r--src/leap/common/keymanager/gpg.py397
-rw-r--r--src/leap/common/keymanager/keys.py230
-rw-r--r--src/leap/common/keymanager/openpgp.py459
-rw-r--r--src/leap/common/tests/test_keymanager.py528
8 files changed, 1948 insertions, 0 deletions
diff --git a/changes/feature_key-manager b/changes/feature_key-manager
new file mode 100644
index 0000000..6588dde
--- /dev/null
+++ b/changes/feature_key-manager
@@ -0,0 +1 @@
+ o Add a Key Manager.
diff --git a/pkg/requirements.pip b/pkg/requirements.pip
index 99d8533..e8f8e87 100644
--- a/pkg/requirements.pip
+++ b/pkg/requirements.pip
@@ -5,3 +5,4 @@ protobuf.socketrpc
pyopenssl
python-dateutil
autopep8
+python-gnupg \ No newline at end of file
diff --git a/src/leap/common/keymanager/__init__.py b/src/leap/common/keymanager/__init__.py
new file mode 100644
index 0000000..d6dbb8a
--- /dev/null
+++ b/src/leap/common/keymanager/__init__.py
@@ -0,0 +1,286 @@
+# -*- coding: utf-8 -*-
+# __init__.py
+# Copyright (C) 2013 LEAP
+#
+# 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 3 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 for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+Key Manager is a Nicknym agent for LEAP client.
+"""
+
+import requests
+
+try:
+ import simplejson as json
+except ImportError:
+ import json # noqa
+
+from leap.common.check import leap_assert
+from leap.common.keymanager.errors import (
+ KeyNotFound,
+ NoPasswordGiven,
+)
+from leap.common.keymanager.keys import (
+ build_key_from_dict,
+)
+from leap.common.keymanager.openpgp import (
+ OpenPGPKey,
+ OpenPGPScheme,
+ encrypt_sym,
+)
+
+
+TAGS_INDEX = 'by-tags'
+TAGS_AND_PRIVATE_INDEX = 'by-tags-and-private'
+INDEXES = {
+ TAGS_INDEX: ['tags'],
+ TAGS_AND_PRIVATE_INDEX: ['tags', 'bool(private)'],
+}
+
+
+class KeyManager(object):
+
+ def __init__(self, address, nickserver_url, soledad, token=None):
+ """
+ Initialize a Key Manager for user's C{address} with provider's
+ nickserver reachable in C{url}.
+
+ @param address: The address of the user of this Key Manager.
+ @type address: str
+ @param url: The URL of the nickserver.
+ @type url: str
+ @param soledad: A Soledad instance for local storage of keys.
+ @type soledad: leap.soledad.Soledad
+ """
+ self._address = address
+ self._nickserver_url = nickserver_url
+ self._soledad = soledad
+ self.token = token
+ self._wrapper_map = {
+ OpenPGPKey: OpenPGPScheme(soledad),
+ # other types of key will be added to this mapper.
+ }
+ self._init_indexes()
+ self._fetcher = requests
+
+ #
+ # utilities
+ #
+
+ def _key_class_from_type(self, ktype):
+ """
+ Return key class from string representation of key type.
+ """
+ return filter(
+ lambda klass: str(klass) == ktype,
+ self._wrapper_map).pop()
+
+ def _init_indexes(self):
+ """
+ Initialize the database indexes.
+ """
+ # Ask the database for currently existing indexes.
+ db_indexes = dict(self._soledad.list_indexes())
+ # Loop through the indexes we expect to find.
+ for name, expression in INDEXES.items():
+ if name not in db_indexes:
+ # The index does not yet exist.
+ self._soledad.create_index(name, *expression)
+ continue
+ if expression == db_indexes[name]:
+ # The index exists and is up to date.
+ continue
+ # The index exists but the definition is not what expected, so we
+ # delete it and add the proper index expression.
+ self._soledad.delete_index(name)
+ self._soledad.create_index(name, *expression)
+
+ def _get_dict_from_http_json(self, path):
+ """
+ Make a GET HTTP request and return a dictionary containing the
+ response.
+ """
+ response = self._fetcher.get(self._nickserver_url+path)
+ leap_assert(response.status_code == 200, 'Invalid response.')
+ leap_assert(
+ response.headers['content-type'].startswith('application/json')
+ is True,
+ 'Content-type is not JSON.')
+ return response.json()
+
+ #
+ # key management
+ #
+
+ def send_key(self, ktype, send_private=False, password=None):
+ """
+ Send user's key of type C{ktype} to provider.
+
+ Public key bound to user's is sent to provider, which will sign it and
+ replace any prior keys for the same address in its database.
+
+ If C{send_private} is True, then the private key is encrypted with
+ C{password} and sent to server in the same request, together with a
+ hash string of user's address and password. The encrypted private key
+ will be saved in the server in a way it is publicly retrievable
+ through the hash string.
+
+ @param ktype: The type of the key.
+ @type ktype: KeyType
+
+ @raise httplib.HTTPException:
+ @raise KeyNotFound: If the key was not found both locally and in
+ keyserver.
+ """
+ # prepare the public key bound to address
+ pubkey = self.get_key(
+ self._address, ktype, private=False, fetch_remote=False)
+ data = {
+ 'address': self._address,
+ 'keys': [
+ json.loads(pubkey.get_json()),
+ ]
+ }
+ # prepare the private key bound to address
+ if send_private:
+ if password is None or password == '':
+ raise NoPasswordGiven('Can\'t send unencrypted private keys!')
+ privkey = self.get_key(
+ self._address, ktype, private=True, fetch_remote=False)
+ privkey = json.loads(privkey.get_json())
+ privkey.key_data = encrypt_sym(privkey.key_data, password)
+ data['keys'].append(privkey)
+ self._fetcher.put(
+ self._nickserver_url + '/key/' + self._address,
+ data=data,
+ auth=(self._address, self._token))
+
+ def get_key(self, address, ktype, private=False, fetch_remote=True):
+ """
+ Return a key of type C{ktype} bound to C{address}.
+
+ First, search for the key in local storage. If it is not available,
+ then try to fetch from nickserver.
+
+ @param address: The address bound to the key.
+ @type address: str
+ @param ktype: The type of the key.
+ @type ktype: KeyType
+ @param private: Look for a private key instead of a public one?
+ @type private: bool
+
+ @return: A key of type C{ktype} bound to C{address}.
+ @rtype: EncryptionKey
+ @raise KeyNotFound: If the key was not found both locally and in
+ keyserver.
+ """
+ leap_assert(
+ ktype in self._wrapper_map,
+ 'Unkown key type: %s.' % str(ktype))
+ try:
+ return self._wrapper_map[ktype].get_key(address, private=private)
+ except KeyNotFound:
+ if fetch_remote is False:
+ raise
+ # fetch keys from server and discard unwanted types.
+ keys = filter(lambda k: isinstance(k, ktype),
+ self.fetch_keys_from_server(address))
+ if len(keys) is 0:
+ raise KeyNotFound()
+ leap_assert(
+ len(keys) == 1,
+ 'Got more than one key of type %s for %s.' %
+ (str(ktype), address))
+ self._wrapper_map[ktype].put_key(keys[0])
+ return self._wrapper_map[ktype].get_key(address, private=private)
+
+ def fetch_keys_from_server(self, address):
+ """
+ Fetch keys bound to C{address} from nickserver.
+
+ @param address: The address bound to the keys.
+ @type address: str
+
+ @return: A list of keys bound to C{address}.
+ @rtype: list of EncryptionKey
+ @raise KeyNotFound: If the key was not found on nickserver.
+ @raise httplib.HTTPException:
+ """
+ keydata = self._get_dict_from_http_json('/key/%s' % address)
+ leap_assert(
+ keydata['address'] == address,
+ "Fetched key for wrong address.")
+ keys = []
+ for key in keydata['keys']:
+ keys.append(
+ build_key_from_dict(
+ self._key_class_from_type(key['type']),
+ address,
+ key))
+ return keys
+
+ def get_all_keys_in_local_db(self, private=False):
+ """
+ Return all keys stored in local database.
+
+ @return: A list with all keys in local db.
+ @rtype: list
+ """
+ return map(
+ lambda doc: build_key_from_dict(
+ self._key_class_from_type(doc.content['type']),
+ doc.content['address'],
+ doc.content),
+ self._soledad.get_from_index(
+ TAGS_AND_PRIVATE_INDEX,
+ 'keymanager-key',
+ '1' if private else '0'))
+
+ def refresh_keys(self):
+ """
+ Fetch keys from nickserver and update them locally.
+ """
+ addresses = set(map(
+ lambda doc: doc.address,
+ self.get_all_keys_in_local_db(private=False)))
+ # TODO: maybe we should not attempt to refresh our own public key?
+ for address in addresses:
+ for key in self.fetch_keys_from_server(address):
+ self._wrapper_map[key.__class__].put_key(key)
+
+ def gen_key(self, ktype):
+ """
+ Generate a key of type C{ktype} bound to the user's address.
+
+ @param ktype: The type of the key.
+ @type ktype: KeyType
+
+ @return: The generated key.
+ @rtype: EncryptionKey
+ """
+ return self._wrapper_map[ktype].gen_key(self._address)
+
+ #
+ # Token setter/getter
+ #
+
+ def _get_token(self):
+ return self._token
+
+ def _set_token(self, token):
+ self._token = token
+
+ token = property(
+ _get_token, _set_token, doc='The auth token.')
diff --git a/src/leap/common/keymanager/errors.py b/src/leap/common/keymanager/errors.py
new file mode 100644
index 0000000..1cf506e
--- /dev/null
+++ b/src/leap/common/keymanager/errors.py
@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+# errors.py
+# Copyright (C) 2013 LEAP
+#
+# 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 3 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 for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+Errors and exceptions used by the Key Manager.
+"""
+
+
+class KeyNotFound(Exception):
+ """
+ Raised when key was no found on keyserver.
+ """
+
+
+class KeyAlreadyExists(Exception):
+ """
+ Raised when attempted to create a key that already exists.
+ """
+
+
+class KeyAttributesDiffer(Exception):
+ """
+ Raised when trying to delete a key but the stored key differs from the key
+ passed to the delete_key() method.
+ """
+
+class NoPasswordGiven(Exception):
+ """
+ Raised when trying to perform some action that needs a password without
+ providing one.
+ """
diff --git a/src/leap/common/keymanager/gpg.py b/src/leap/common/keymanager/gpg.py
new file mode 100644
index 0000000..f3e6453
--- /dev/null
+++ b/src/leap/common/keymanager/gpg.py
@@ -0,0 +1,397 @@
+# -*- coding: utf-8 -*-
+# gpgwrapper.py
+# Copyright (C) 2013 LEAP
+#
+# 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 3 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 for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+A GPG wrapper used to handle OpenPGP keys.
+
+This is a temporary class that will be superseded by the a revised version of
+python-gnupg.
+"""
+
+
+import os
+import gnupg
+import re
+from gnupg import (
+ logger,
+ _is_sequence,
+ _make_binary_stream,
+)
+
+
+class ListPackets():
+ """
+ Handle status messages for --list-packets.
+ """
+
+ def __init__(self, gpg):
+ """
+ Initialize the packet listing handling class.
+
+ @param gpg: GPG object instance.
+ @type gpg: gnupg.GPG
+ """
+ self.gpg = gpg
+ self.nodata = None
+ self.key = None
+ self.need_passphrase = None
+ self.need_passphrase_sym = None
+ self.userid_hint = None
+
+ def handle_status(self, key, value):
+ """
+ Handle one line of the --list-packets status message.
+
+ @param key: The status message key.
+ @type key: str
+ @param value: The status message value.
+ @type value: str
+ """
+ # TODO: write tests for handle_status
+ if key == 'NODATA':
+ self.nodata = True
+ if key == 'ENC_TO':
+ # This will only capture keys in our keyring. In the future we
+ # may want to include multiple unknown keys in this list.
+ self.key, _, _ = value.split()
+ if key == 'NEED_PASSPHRASE':
+ self.need_passphrase = True
+ if key == 'NEED_PASSPHRASE_SYM':
+ self.need_passphrase_sym = True
+ if key == 'USERID_HINT':
+ self.userid_hint = value.strip().split()
+
+
+class GPGWrapper(gnupg.GPG):
+ """
+ This is a temporary class for handling GPG requests, and should be
+ replaced by a more general class used throughout the project.
+ """
+
+ GNUPG_HOME = os.environ['HOME'] + "/.config/leap/gnupg"
+ GNUPG_BINARY = "/usr/bin/gpg" # this has to be changed based on OS
+
+ def __init__(self, gpgbinary=GNUPG_BINARY, gnupghome=GNUPG_HOME,
+ verbose=False, use_agent=False, keyring=None, options=None):
+ """
+ Initialize a GnuPG process wrapper.
+
+ @param gpgbinary: Name for GnuPG binary executable.
+ @type gpgbinary: C{str}
+ @param gpghome: Full pathname to directory containing the public and
+ private keyrings.
+ @type gpghome: C{str}
+ @param keyring: Name of alternative keyring file to use. If specified,
+ the default keyring is not used.
+ @param verbose: Should some verbose info be output?
+ @type verbose: bool
+ @param use_agent: Should pass `--use-agent` to GPG binary?
+ @type use_agent: bool
+ @param keyring: Path for the keyring to use.
+ @type keyring: str
+ @options: A list of additional options to pass to the GPG binary.
+ @type options: list
+
+ @raise: RuntimeError with explanation message if there is a problem
+ invoking gpg.
+ """
+ gnupg.GPG.__init__(self, gnupghome=gnupghome, gpgbinary=gpgbinary,
+ verbose=verbose, use_agent=use_agent,
+ keyring=keyring, options=options)
+ self.result_map['list-packets'] = ListPackets
+
+ def find_key_by_email(self, email, secret=False):
+ """
+ Find user's key based on their email.
+
+ @param email: Email address of key being searched for.
+ @type email: str
+ @param secret: Should we search for a secret key?
+ @type secret: bool
+
+ @return: The fingerprint of the found key.
+ @rtype: str
+ """
+ for key in self.list_keys(secret=secret):
+ for uid in key['uids']:
+ if re.search(email, uid):
+ return key
+ raise LookupError("GnuPG public key for email %s not found!" % email)
+
+ def find_key_by_subkey(self, subkey, secret=False):
+ """
+ Find user's key based on a subkey fingerprint.
+
+ @param email: Subkey fingerprint of the key being searched for.
+ @type email: str
+ @param secret: Should we search for a secret key?
+ @type secret: bool
+
+ @return: The fingerprint of the found key.
+ @rtype: str
+ """
+ for key in self.list_keys(secret=secret):
+ for sub in key['subkeys']:
+ if sub[0] == subkey:
+ return key
+ raise LookupError(
+ "GnuPG public key for subkey %s not found!" % subkey)
+
+ def find_key_by_keyid(self, keyid, secret=False):
+ """
+ Find user's key based on the key ID.
+
+ @param email: The key ID of the key being searched for.
+ @type email: str
+ @param secret: Should we search for a secret key?
+ @type secret: bool
+
+ @return: The fingerprint of the found key.
+ @rtype: str
+ """
+ for key in self.list_keys(secret=secret):
+ if keyid == key['keyid']:
+ return key
+ raise LookupError(
+ "GnuPG public key for keyid %s not found!" % keyid)
+
+ def find_key_by_fingerprint(self, fingerprint, secret=False):
+ """
+ Find user's key based on the key fingerprint.
+
+ @param email: The fingerprint of the key being searched for.
+ @type email: str
+ @param secret: Should we search for a secret key?
+ @type secret: bool
+
+ @return: The fingerprint of the found key.
+ @rtype: str
+ """
+ for key in self.list_keys(secret=secret):
+ if fingerprint == key['fingerprint']:
+ return key
+ raise LookupError(
+ "GnuPG public key for fingerprint %s not found!" % fingerprint)
+
+ def encrypt(self, data, recipient, sign=None, always_trust=True,
+ passphrase=None, symmetric=False):
+ """
+ Encrypt data using GPG.
+
+ @param data: The data to be encrypted.
+ @type data: str
+ @param recipient: The address of the public key to be used.
+ @type recipient: str
+ @param sign: Should the encrypted content be signed?
+ @type sign: bool
+ @param always_trust: Skip key validation and assume that used keys
+ are always fully trusted?
+ @type always_trust: bool
+ @param passphrase: The passphrase to be used if symmetric encryption
+ is desired.
+ @type passphrase: str
+ @param symmetric: Should we encrypt to a password?
+ @type symmetric: bool
+
+ @return: An object with encrypted result in the `data` field.
+ @rtype: gnupg.Crypt
+ """
+ # TODO: devise a way so we don't need to "always trust".
+ return gnupg.GPG.encrypt(self, data, recipient, sign=sign,
+ always_trust=always_trust,
+ passphrase=passphrase,
+ symmetric=symmetric,
+ cipher_algo='AES256')
+
+ def decrypt(self, data, always_trust=True, passphrase=None):
+ """
+ Decrypt data using GPG.
+
+ @param data: The data to be decrypted.
+ @type data: str
+ @param always_trust: Skip key validation and assume that used keys
+ are always fully trusted?
+ @type always_trust: bool
+ @param passphrase: The passphrase to be used if symmetric encryption
+ is desired.
+ @type passphrase: str
+
+ @return: An object with decrypted result in the `data` field.
+ @rtype: gnupg.Crypt
+ """
+ # TODO: devise a way so we don't need to "always trust".
+ return gnupg.GPG.decrypt(self, data, always_trust=always_trust,
+ passphrase=passphrase)
+
+ def send_keys(self, keyserver, *keyids):
+ """
+ Send keys to a keyserver
+
+ @param keyserver: The keyserver to send the keys to.
+ @type keyserver: str
+ @param keyids: The key ids to send.
+ @type keyids: list
+
+ @return: A list of keys sent to server.
+ @rtype: gnupg.ListKeys
+ """
+ # TODO: write tests for this.
+ # TODO: write a SendKeys class to handle status for this.
+ result = self.result_map['list'](self)
+ gnupg.logger.debug('send_keys: %r', keyids)
+ data = gnupg._make_binary_stream("", self.encoding)
+ args = ['--keyserver', keyserver, '--send-keys']
+ args.extend(keyids)
+ self._handle_io(args, data, result, binary=True)
+ gnupg.logger.debug('send_keys result: %r', result.__dict__)
+ data.close()
+ return result
+
+ def encrypt_file(self, file, recipients, sign=None,
+ always_trust=False, passphrase=None,
+ armor=True, output=None, symmetric=False,
+ cipher_algo=None):
+ """
+ Encrypt the message read from the file-like object 'file'.
+
+ @param file: The file to be encrypted.
+ @type data: file
+ @param recipient: The address of the public key to be used.
+ @type recipient: str
+ @param sign: Should the encrypted content be signed?
+ @type sign: bool
+ @param always_trust: Skip key validation and assume that used keys
+ are always fully trusted?
+ @type always_trust: bool
+ @param passphrase: The passphrase to be used if symmetric encryption
+ is desired.
+ @type passphrase: str
+ @param armor: Create ASCII armored output?
+ @type armor: bool
+ @param output: Path of file to write results in.
+ @type output: str
+ @param symmetric: Should we encrypt to a password?
+ @type symmetric: bool
+ @param cipher_algo: Algorithm to use.
+ @type cipher_algo: str
+
+ @return: An object with encrypted result in the `data` field.
+ @rtype: gnupg.Crypt
+ """
+ args = ['--encrypt']
+ if symmetric:
+ args = ['--symmetric']
+ if cipher_algo:
+ args.append('--cipher-algo %s' % cipher_algo)
+ else:
+ args = ['--encrypt']
+ if not _is_sequence(recipients):
+ recipients = (recipients,)
+ for recipient in recipients:
+ args.append('--recipient "%s"' % recipient)
+ if armor: # create ascii-armored output - set to False for binary
+ args.append('--armor')
+ if output: # write the output to a file with the specified name
+ if os.path.exists(output):
+ os.remove(output) # to avoid overwrite confirmation message
+ args.append('--output "%s"' % output)
+ if sign:
+ args.append('--sign --default-key "%s"' % sign)
+ if always_trust:
+ args.append("--always-trust")
+ result = self.result_map['crypt'](self)
+ self._handle_io(args, file, result, passphrase=passphrase, binary=True)
+ logger.debug('encrypt result: %r', result.data)
+ return result
+
+ def list_packets(self, data):
+ """
+ List the sequence of packets.
+
+ @param data: The data to extract packets from.
+ @type data: str
+
+ @return: An object with packet info.
+ @rtype ListPackets
+ """
+ args = ["--list-packets"]
+ result = self.result_map['list-packets'](self)
+ self._handle_io(
+ args,
+ _make_binary_stream(data, self.encoding),
+ result,
+ )
+ return result
+
+ def encrypted_to(self, data):
+ """
+ Return the key to which data is encrypted to.
+
+ @param data: The data to be examined.
+ @type data: str
+
+ @return: The fingerprint of the key to which data is encrypted to.
+ @rtype: str
+ """
+ # TODO: make this support multiple keys.
+ result = self.list_packets(data)
+ if not result.key:
+ raise LookupError(
+ "Content is not encrypted to a GnuPG key!")
+ try:
+ return self.find_key_by_keyid(result.key)
+ except:
+ return self.find_key_by_subkey(result.key)
+
+ def is_encrypted_sym(self, data):
+ """
+ Say whether some chunk of data is encrypted to a symmetric key.
+
+ @param data: The data to be examined.
+ @type data: str
+
+ @return: Whether data is encrypted to a symmetric key.
+ @rtype: bool
+ """
+ result = self.list_packets(data)
+ return bool(result.need_passphrase_sym)
+
+ def is_encrypted_asym(self, data):
+ """
+ Say whether some chunk of data is encrypted to a private key.
+
+ @param data: The data to be examined.
+ @type data: str
+
+ @return: Whether data is encrypted to a private key.
+ @rtype: bool
+ """
+ result = self.list_packets(data)
+ return bool(result.key)
+
+ def is_encrypted(self, data):
+ """
+ Say whether some chunk of data is encrypted to a key.
+
+ @param data: The data to be examined.
+ @type data: str
+
+ @return: Whether data is encrypted to a key.
+ @rtype: bool
+ """
+ return self.is_encrypted_asym(data) or self.is_encrypted_sym(data)
diff --git a/src/leap/common/keymanager/keys.py b/src/leap/common/keymanager/keys.py
new file mode 100644
index 0000000..2e6bfe9
--- /dev/null
+++ b/src/leap/common/keymanager/keys.py
@@ -0,0 +1,230 @@
+# -*- coding: utf-8 -*-
+# keys.py
+# Copyright (C) 2013 LEAP
+#
+# 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 3 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 for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+Abstact key type and encryption scheme representations.
+"""
+
+
+try:
+ import simplejson as json
+except ImportError:
+ import json # noqa
+import re
+
+
+from hashlib import sha256
+from abc import ABCMeta, abstractmethod
+from leap.common.check import leap_assert
+
+
+#
+# Key handling utilities
+#
+
+def is_address(address):
+ """
+ Return whether the given C{address} is in the form user@provider.
+
+ @param address: The address to be tested.
+ @type address: str
+ @return: Whether C{address} is in the form user@provider.
+ @rtype: bool
+ """
+ return bool(re.match('[\w.-]+@[\w.-]+', address))
+
+
+def build_key_from_dict(kClass, address, kdict):
+ """
+ Build an C{kClass} key bound to C{address} based on info in C{kdict}.
+
+ @param address: The address bound to the key.
+ @type address: str
+ @param kdict: Dictionary with key data.
+ @type kdict: dict
+ @return: An instance of the key.
+ @rtype: C{kClass}
+ """
+ leap_assert(address == kdict['address'], 'Wrong address in key data.')
+ return kClass(
+ address,
+ key_id=kdict['key_id'],
+ fingerprint=kdict['fingerprint'],
+ key_data=kdict['key_data'],
+ private=kdict['private'],
+ length=kdict['length'],
+ expiry_date=kdict['expiry_date'],
+ first_seen_at=kdict['first_seen_at'],
+ last_audited_at=kdict['last_audited_at'],
+ validation=kdict['validation'], # TODO: verify for validation.
+ )
+
+
+def keymanager_doc_id(ktype, address, private=False):
+ """
+ Return the document id for the document containing a key for
+ C{address}.
+
+ @param address: The type of the key.
+ @type address: KeyType
+ @param address: The address bound to the key.
+ @type address: str
+ @param private: Whether the key is private or not.
+ @type private: bool
+ @return: The document id for the document that stores a key bound to
+ C{address}.
+ @rtype: str
+ """
+ leap_assert(is_address(address), "Wrong address format: %s" % address)
+ ktype = str(ktype)
+ visibility = 'private' if private else 'public'
+ return sha256('keymanager-'+address+'-'+ktype+'-'+visibility).hexdigest()
+
+
+#
+# Abstraction for encryption keys
+#
+
+class EncryptionKey(object):
+ """
+ Abstract class for encryption keys.
+
+ A key is "validated" if the nicknym agent has bound the user address to a
+ public key. Nicknym supports three different levels of key validation:
+
+ * Level 3 - path trusted: A path of cryptographic signatures can be traced
+ from a trusted key to the key under evaluation. By default, only the
+ provider key from the user's provider is a "trusted key".
+ * level 2 - provider signed: The key has been signed by a provider key for
+ the same domain, but the provider key is not validated using a trust
+ path (i.e. it is only registered)
+ * level 1 - registered: The key has been encountered and saved, it has no
+ signatures (that are meaningful to the nicknym agent).
+ """
+
+ __metaclass__ = ABCMeta
+
+ def __init__(self, address, key_id=None, fingerprint=None,
+ key_data=None, private=None, length=None, expiry_date=None,
+ validation=None, first_seen_at=None, last_audited_at=None):
+ self.address = address
+ self.key_id = key_id
+ self.fingerprint = fingerprint
+ self.key_data = key_data
+ self.private = private
+ self.length = length
+ self.expiry_date = expiry_date
+ self.validation = validation
+ self.first_seen_at = first_seen_at
+ self.last_audited_at = last_audited_at
+
+ def get_json(self):
+ """
+ Return a JSON string describing this key.
+
+ @return: The JSON string describing this key.
+ @rtype: str
+ """
+ return json.dumps({
+ 'address': self.address,
+ 'type': str(self.__class__),
+ 'key_id': self.key_id,
+ 'fingerprint': self.fingerprint,
+ 'key_data': self.key_data,
+ 'private': self.private,
+ 'length': self.length,
+ 'expiry_date': self.expiry_date,
+ 'validation': self.validation,
+ 'first_seen_at': self.first_seen_at,
+ 'last_audited_at': self.last_audited_at,
+ 'tags': ['keymanager-key'],
+ })
+
+
+#
+# Encryption schemes
+#
+
+class EncryptionScheme(object):
+ """
+ Abstract class for Encryption Schemes.
+
+ A wrapper for a certain encryption schemes should know how to get and put
+ keys in local storage using Soledad, how to generate new keys and how to
+ find out about possibly encrypted content.
+ """
+
+ __metaclass__ = ABCMeta
+
+ def __init__(self, soledad):
+ """
+ Initialize this Encryption Scheme.
+
+ @param soledad: A Soledad instance for local storage of keys.
+ @type soledad: leap.soledad.Soledad
+ """
+ self._soledad = soledad
+
+ @abstractmethod
+ def get_key(self, address, private=False):
+ """
+ Get key from local storage.
+
+ @param address: The address bound to the key.
+ @type address: str
+ @param private: Look for a private key instead of a public one?
+ @type private: bool
+
+ @return: The key bound to C{address}.
+ @rtype: EncryptionKey
+ @raise KeyNotFound: If the key was not found on local storage.
+ """
+ pass
+
+ @abstractmethod
+ def put_key(self, key):
+ """
+ Put a key in local storage.
+
+ @param key: The key to be stored.
+ @type key: EncryptionKey
+ """
+ pass
+
+ @abstractmethod
+ def gen_key(self, address):
+ """
+ Generate a new key.
+
+ @param address: The address bound to the key.
+ @type address: str
+
+ @return: The key bound to C{address}.
+ @rtype: EncryptionKey
+ """
+ pass
+
+ @abstractmethod
+ def delete_key(self, key):
+ """
+ Remove C{key} from storage.
+
+ @param key: The key to be removed.
+ @type key: EncryptionKey
+ """
+ pass
diff --git a/src/leap/common/keymanager/openpgp.py b/src/leap/common/keymanager/openpgp.py
new file mode 100644
index 0000000..e2ffe76
--- /dev/null
+++ b/src/leap/common/keymanager/openpgp.py
@@ -0,0 +1,459 @@
+# -*- coding: utf-8 -*-
+# openpgp.py
+# Copyright (C) 2013 LEAP
+#
+# 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 3 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 for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+Infrastructure for using OpenPGP keys in Key Manager.
+"""
+
+
+import re
+import tempfile
+import shutil
+
+from leap.common.check import leap_assert
+from leap.common.keymanager.errors import (
+ KeyNotFound,
+ KeyAlreadyExists,
+ KeyAttributesDiffer
+)
+from leap.common.keymanager.keys import (
+ EncryptionKey,
+ EncryptionScheme,
+ is_address,
+ keymanager_doc_id,
+ build_key_from_dict,
+)
+from leap.common.keymanager.gpg import GPGWrapper
+
+
+#
+# Utility functions
+#
+
+def encrypt_sym(data, passphrase):
+ """
+ Encrypt C{data} with C{passphrase}.
+
+ @param data: The data to be encrypted.
+ @type data: str
+ @param passphrase: The passphrase used to encrypt C{data}.
+ @type passphrase: str
+
+ @return: The encrypted data.
+ @rtype: str
+ """
+
+ def _encrypt_cb(gpg):
+ return gpg.encrypt(
+ data, None, passphrase=passphrase, symmetric=True).data
+
+ return _safe_call(_encrypt_cb)
+
+
+def decrypt_sym(data, passphrase):
+ """
+ Decrypt C{data} with C{passphrase}.
+
+ @param data: The data to be decrypted.
+ @type data: str
+ @param passphrase: The passphrase used to decrypt C{data}.
+ @type passphrase: str
+
+ @return: The decrypted data.
+ @rtype: str
+ """
+
+ def _decrypt_cb(gpg):
+ return gpg.decrypt(data, passphrase=passphrase).data
+
+ return _safe_call(_decrypt_cb)
+
+
+def encrypt_asym(data, key):
+ """
+ Encrypt C{data} using public @{key}.
+
+ @param data: The data to be encrypted.
+ @type data: str
+ @param key: The key used to encrypt.
+ @type key: OpenPGPKey
+
+ @return: The encrypted data.
+ @rtype: str
+ """
+ leap_assert(key.private is False, 'Key is not public.')
+
+ def _encrypt_cb(gpg):
+ return gpg.encrypt(
+ data, key.fingerprint, symmetric=False).data
+
+ return _safe_call(_encrypt_cb, key.key_data)
+
+
+def decrypt_asym(data, key):
+ """
+ Decrypt C{data} using private @{key}.
+
+ @param data: The data to be decrypted.
+ @type data: str
+ @param key: The key used to decrypt.
+ @type key: OpenPGPKey
+
+ @return: The decrypted data.
+ @rtype: str
+ """
+ leap_assert(key.private is True, 'Key is not private.')
+
+ def _decrypt_cb(gpg):
+ return gpg.decrypt(data).data
+
+ return _safe_call(_decrypt_cb, key.key_data)
+
+
+def is_encrypted(data):
+ """
+ Return whether C{data} was encrypted using OpenPGP.
+
+ @param data: The data we want to know about.
+ @type data: str
+
+ @return: Whether C{data} was encrypted using this wrapper.
+ @rtype: bool
+ """
+
+ def _is_encrypted_cb(gpg):
+ return gpg.is_encrypted(data)
+
+ return _safe_call(_is_encrypted_cb)
+
+
+def is_encrypted_sym(data):
+ """
+ Return whether C{data} was encrypted using a public OpenPGP key.
+
+ @param data: The data we want to know about.
+ @type data: str
+
+ @return: Whether C{data} was encrypted using this wrapper.
+ @rtype: bool
+ """
+
+ def _is_encrypted_cb(gpg):
+ return gpg.is_encrypted_sym(data)
+
+ return _safe_call(_is_encrypted_cb)
+
+
+def is_encrypted_asym(data):
+ """
+ Return whether C{data} was asymmetrically encrypted using OpenPGP.
+
+ @param data: The data we want to know about.
+ @type data: str
+
+ @return: Whether C{data} was encrypted using this wrapper.
+ @rtype: bool
+ """
+
+ def _is_encrypted_cb(gpg):
+ return gpg.is_encrypted_asym(data)
+
+ return _safe_call(_is_encrypted_cb)
+
+
+def _build_key_from_gpg(address, key, key_data):
+ """
+ Build an OpenPGPKey for C{address} based on C{key} from
+ local gpg storage.
+
+ ASCII armored GPG key data has to be queried independently in this
+ wrapper, so we receive it in C{key_data}.
+
+ @param address: The address bound to the key.
+ @type address: str
+ @param key: Key obtained from GPG storage.
+ @type key: dict
+ @param key_data: Key data obtained from GPG storage.
+ @type key_data: str
+ @return: An instance of the key.
+ @rtype: OpenPGPKey
+ """
+ return OpenPGPKey(
+ address,
+ key_id=key['keyid'],
+ fingerprint=key['fingerprint'],
+ key_data=key_data,
+ private=True if key['type'] == 'sec' else False,
+ length=key['length'],
+ expiry_date=key['expires'],
+ validation=None, # TODO: verify for validation.
+ )
+
+
+def _build_unitary_gpgwrapper(key_data=None):
+ """
+ Return a temporary GPG wrapper keyring containing exactly zero or one
+ keys.
+
+ Temporary unitary keyrings allow the to use GPG's facilities for exactly
+ one key. This function creates an empty temporary keyring and imports
+ C{key_data} if it is not None.
+
+ @param key_data: ASCII armored key data.
+ @type key_data: str
+ @return: A GPG wrapper with a unitary keyring.
+ @rtype: gnupg.GPG
+ """
+ tmpdir = tempfile.mkdtemp()
+ gpg = GPGWrapper(gnupghome=tmpdir)
+ leap_assert(len(gpg.list_keys()) is 0, 'Keyring not empty.')
+ if key_data:
+ gpg.import_keys(key_data)
+ leap_assert(
+ len(gpg.list_keys()) is 1,
+ 'Unitary keyring has wrong number of keys: %d.'
+ % len(gpg.list_keys()))
+ return gpg
+
+
+def _destroy_unitary_gpgwrapper(gpg):
+ """
+ Securely erase a unitary keyring.
+
+ @param gpg: A GPG wrapper instance.
+ @type gpg: gnupg.GPG
+ """
+ for secret in [True, False]:
+ for key in gpg.list_keys(secret=secret):
+ gpg.delete_keys(
+ key['fingerprint'],
+ secret=secret)
+ leap_assert(len(gpg.list_keys()) is 0, 'Keyring not empty!')
+ # TODO: implement some kind of wiping of data or a more secure way that
+ # does not write to disk.
+ shutil.rmtree(gpg.gnupghome)
+
+
+def _safe_call(callback, key_data=None, **kwargs):
+ """
+ Run C{callback} in an unitary keyring containing C{key_data}.
+
+ @param callback: Function whose first argument is the gpg keyring.
+ @type callback: function(gnupg.GPG)
+ @param key_data: ASCII armored key data.
+ @type key_data: str
+ @param **kwargs: Other eventual parameters for the callback.
+ @type **kwargs: **dict
+
+ @return: The results of the callback.
+ @rtype: str or bool
+ """
+ gpg = _build_unitary_gpgwrapper(key_data)
+ val = callback(gpg, **kwargs)
+ _destroy_unitary_gpgwrapper(gpg)
+ return val
+
+
+#
+# The OpenPGP wrapper
+#
+
+class OpenPGPKey(EncryptionKey):
+ """
+ Base class for OpenPGP keys.
+ """
+
+
+class OpenPGPScheme(EncryptionScheme):
+ """
+ A wrapper for OpenPGP keys.
+ """
+
+ def __init__(self, soledad):
+ """
+ Initialize the OpenPGP wrapper.
+
+ @param soledad: A Soledad instance for key storage.
+ @type soledad: leap.soledad.Soledad
+ """
+ EncryptionScheme.__init__(self, soledad)
+
+ def gen_key(self, address):
+ """
+ Generate an OpenPGP keypair bound to C{address}.
+
+ @param address: The address bound to the key.
+ @type address: str
+ @return: The key bound to C{address}.
+ @rtype: OpenPGPKey
+ @raise KeyAlreadyExists: If key already exists in local database.
+ """
+ # make sure the key does not already exist
+ leap_assert(is_address(address), 'Not an user address: %s' % address)
+ try:
+ self.get_key(address)
+ raise KeyAlreadyExists(address)
+ except KeyNotFound:
+ pass
+
+ def _gen_key_cb(gpg):
+ params = gpg.gen_key_input(
+ key_type='RSA',
+ key_length=4096,
+ name_real=address,
+ name_email=address,
+ name_comment='Generated by LEAP Key Manager.')
+ gpg.gen_key(params)
+ pubkeys = gpg.list_keys()
+ # assert for new key characteristics
+ leap_assert(
+ len(pubkeys) is 1, # a unitary keyring!
+ 'Keyring has wrong number of keys: %d.' % len(pubkeys))
+ key = gpg.list_keys(secret=True).pop()
+ leap_assert(
+ len(key['uids']) is 1, # with just one uid!
+ 'Wrong number of uids for key: %d.' % len(key['uids']))
+ leap_assert(
+ re.match('.*<%s>$' % address, key['uids'][0]) is not None,
+ 'Key not correctly bound to address.')
+ # insert both public and private keys in storage
+ for secret in [True, False]:
+ key = gpg.list_keys(secret=secret).pop()
+ openpgp_key = _build_key_from_gpg(
+ address, key,
+ gpg.export_keys(key['fingerprint'], secret=secret))
+ self.put_key(openpgp_key)
+
+ _safe_call(_gen_key_cb)
+ return self.get_key(address, private=True)
+
+ def get_key(self, address, private=False):
+ """
+ Get key bound to C{address} from local storage.
+
+ @param address: The address bound to the key.
+ @type address: str
+ @param private: Look for a private key instead of a public one?
+ @type private: bool
+
+ @return: The key bound to C{address}.
+ @rtype: OpenPGPKey
+ @raise KeyNotFound: If the key was not found on local storage.
+ """
+ leap_assert(is_address(address), 'Not an user address: %s' % address)
+ doc = self._get_key_doc(address, private)
+ if doc is None:
+ raise KeyNotFound(address)
+ return build_key_from_dict(OpenPGPKey, address, doc.content)
+
+ def put_key_raw(self, data):
+ """
+ Put key contained in raw C{data} in local storage.
+
+ @param data: The key data to be stored.
+ @type data: str
+ """
+ # TODO: add more checks for correct key data.
+ leap_assert(data is not None, 'Data does not represent a key.')
+
+ def _put_key_raw_cb(gpg):
+
+ privkey = None
+ pubkey = None
+ try:
+ privkey = gpg.list_keys(secret=True).pop()
+ except IndexError:
+ pass
+ pubkey = gpg.list_keys(secret=False).pop() # unitary keyring
+ # extract adress from first uid on key
+ match = re.match('.*<([\w.-]+@[\w.-]+)>.*', pubkey['uids'].pop())
+ leap_assert(match is not None, 'No user address in key data.')
+ address = match.group(1)
+ if privkey is not None:
+ match = re.match(
+ '.*<([\w.-]+@[\w.-]+)>.*', privkey['uids'].pop())
+ leap_assert(match is not None, 'No user address in key data.')
+ privaddress = match.group(1)
+ leap_assert(
+ address == privaddress,
+ 'Addresses in pub and priv key differ.')
+ leap_assert(
+ pubkey['fingerprint'] == privkey['fingerprint'],
+ 'Fingerprints for pub and priv key differ.')
+ # insert private key in storage
+ openpgp_privkey = _build_key_from_gpg(
+ address, privkey,
+ gpg.export_keys(privkey['fingerprint'], secret=True))
+ self.put_key(openpgp_privkey)
+ # insert public key in storage
+ openpgp_pubkey = _build_key_from_gpg(
+ address, pubkey,
+ gpg.export_keys(pubkey['fingerprint'], secret=False))
+ self.put_key(openpgp_pubkey)
+
+ _safe_call(_put_key_raw_cb, data)
+
+ def put_key(self, key):
+ """
+ Put C{key} in local storage.
+
+ @param key: The key to be stored.
+ @type key: OpenPGPKey
+ """
+ doc = self._get_key_doc(key.address, private=key.private)
+ if doc is None:
+ self._soledad.create_doc_from_json(
+ key.get_json(),
+ doc_id=keymanager_doc_id(
+ OpenPGPKey, key.address, key.private))
+ else:
+ doc.set_json(key.get_json())
+ self._soledad.put_doc(doc)
+
+ def _get_key_doc(self, address, private=False):
+ """
+ Get the document with a key (public, by default) bound to C{address}.
+
+ If C{private} is True, looks for a private key instead of a public.
+
+ @param address: The address bound to the key.
+ @type address: str
+ @param private: Whether to look for a private key.
+ @type private: bool
+ @return: The document with the key or None if it does not exist.
+ @rtype: leap.soledad.backends.leap_backend.LeapDocument
+ """
+ return self._soledad.get_doc(
+ keymanager_doc_id(OpenPGPKey, address, private))
+
+ def delete_key(self, key):
+ """
+ Remove C{key} from storage.
+
+ @param key: The key to be removed.
+ @type key: EncryptionKey
+ """
+ leap_assert(key.__class__ is OpenPGPKey, 'Wrong key type.')
+ stored_key = self.get_key(key.address, private=key.private)
+ if stored_key is None:
+ raise KeyNotFound(key)
+ if stored_key.__dict__ != key.__dict__:
+ raise KeyAttributesDiffer(key)
+ doc = self._soledad.get_doc(
+ keymanager_doc_id(OpenPGPKey, key.address, key.private))
+ self._soledad.delete_doc(doc)
diff --git a/src/leap/common/tests/test_keymanager.py b/src/leap/common/tests/test_keymanager.py
new file mode 100644
index 0000000..1d7a382
--- /dev/null
+++ b/src/leap/common/tests/test_keymanager.py
@@ -0,0 +1,528 @@
+## -*- coding: utf-8 -*-
+# test_keymanager.py
+# Copyright (C) 2013 LEAP
+#
+# 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 3 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 for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+Tests for the Key Manager.
+"""
+
+
+import mock
+try:
+ import simplejson as json
+except ImportError:
+ import json # noqa
+
+
+from leap.common.testing.basetest import BaseLeapTest
+from leap.soledad import Soledad
+from leap.soledad.crypto import SoledadCrypto
+
+
+from leap.common.keymanager import (
+ KeyManager,
+ openpgp,
+ KeyNotFound,
+ NoPasswordGiven,
+ TAGS_INDEX,
+ TAGS_AND_PRIVATE_INDEX,
+)
+from leap.common.keymanager.openpgp import OpenPGPKey
+from leap.common.keymanager.keys import (
+ is_address,
+ build_key_from_dict,
+ keymanager_doc_id,
+)
+from leap.common.keymanager import errors
+
+
+ADDRESS = 'leap@leap.se'
+
+
+class KeyManagerUtilTestCase(BaseLeapTest):
+
+ def setUp(self):
+ pass
+
+ def tearDown(self):
+ pass
+
+ def test_is_address(self):
+ self.assertTrue(
+ is_address('user@leap.se'),
+ 'Incorrect address detection.')
+ self.assertFalse(
+ is_address('userleap.se'),
+ 'Incorrect address detection.')
+ self.assertFalse(
+ is_address('user@'),
+ 'Incorrect address detection.')
+ self.assertFalse(
+ is_address('@leap.se'),
+ 'Incorrect address detection.')
+
+ def test_build_key_from_dict(self):
+ kdict = {
+ 'address': ADDRESS,
+ 'key_id': 'key_id',
+ 'fingerprint': 'fingerprint',
+ 'key_data': 'key_data',
+ 'private': 'private',
+ 'length': 'length',
+ 'expiry_date': 'expiry_date',
+ 'first_seen_at': 'first_seen_at',
+ 'last_audited_at': 'last_audited_at',
+ 'validation': 'validation',
+ }
+ key = build_key_from_dict(OpenPGPKey, ADDRESS, kdict)
+ self.assertEqual(
+ kdict['address'], key.address,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['key_id'], key.key_id,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['fingerprint'], key.fingerprint,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['key_data'], key.key_data,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['private'], key.private,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['length'], key.length,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['expiry_date'], key.expiry_date,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['first_seen_at'], key.first_seen_at,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['last_audited_at'], key.last_audited_at,
+ 'Wrong data in key.')
+ self.assertEqual(
+ kdict['validation'], key.validation,
+ 'Wrong data in key.')
+
+ def test_keymanager_doc_id(self):
+ doc_id1 = keymanager_doc_id(
+ OpenPGPKey, ADDRESS, private=False)
+ doc_id2 = keymanager_doc_id(
+ OpenPGPKey, ADDRESS, private=True)
+ doc_id3 = keymanager_doc_id(
+ OpenPGPKey, 'user@leap.se', private=False)
+ doc_id4 = keymanager_doc_id(
+ OpenPGPKey, 'user@leap.se', private=True)
+ self.assertFalse(doc_id1 == doc_id2, 'Doc ids are equal!')
+ self.assertFalse(doc_id1 == doc_id3, 'Doc ids are equal!')
+ self.assertFalse(doc_id1 == doc_id4, 'Doc ids are equal!')
+ self.assertFalse(doc_id2 == doc_id3, 'Doc ids are equal!')
+ self.assertFalse(doc_id2 == doc_id4, 'Doc ids are equal!')
+ self.assertFalse(doc_id3 == doc_id4, 'Doc ids are equal!')
+
+
+class KeyManagerWithSoledadTestCase(BaseLeapTest):
+
+ def setUp(self):
+ self._soledad = Soledad(
+ "leap@leap.se",
+ "123456",
+ secret_path=self.tempdir+"/secret.gpg",
+ local_db_path=self.tempdir+"/soledad.u1db",
+ server_url='',
+ cert_file=None,
+ bootstrap=False,
+ )
+ # initialize solead by hand for testing purposes
+ self._soledad._init_dirs()
+ self._soledad._crypto = SoledadCrypto(self._soledad)
+ self._soledad._shared_db = None
+ self._soledad._init_keys()
+ self._soledad._init_db()
+
+ def tearDown(self):
+ km = self._key_manager()
+ for key in km.get_all_keys_in_local_db():
+ km._wrapper_map[key.__class__].delete_key(key)
+ for key in km.get_all_keys_in_local_db(private=True):
+ km._wrapper_map[key.__class__].delete_key(key)
+
+ def _key_manager(self, user=ADDRESS, url=''):
+ return KeyManager(user, url, self._soledad)
+
+
+class OpenPGPCryptoTestCase(KeyManagerWithSoledadTestCase):
+
+ def test_openpgp_gen_key(self):
+ pgp = openpgp.OpenPGPScheme(self._soledad)
+ self.assertRaises(KeyNotFound, pgp.get_key, 'user@leap.se')
+ key = pgp.gen_key('user@leap.se')
+ self.assertIsInstance(key, openpgp.OpenPGPKey)
+ self.assertEqual(
+ 'user@leap.se', key.address, 'Wrong address bound to key.')
+ self.assertEqual(
+ '4096', key.length, 'Wrong key length.')
+
+ def test_openpgp_put_delete_key(self):
+ pgp = openpgp.OpenPGPScheme(self._soledad)
+ self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+ pgp.put_key_raw(PUBLIC_KEY)
+ key = pgp.get_key(ADDRESS, private=False)
+ pgp.delete_key(key)
+ self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+
+ def test_openpgp_put_key_raw(self):
+ pgp = openpgp.OpenPGPScheme(self._soledad)
+ self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+ pgp.put_key_raw(PUBLIC_KEY)
+ key = pgp.get_key(ADDRESS, private=False)
+ self.assertIsInstance(key, openpgp.OpenPGPKey)
+ self.assertEqual(
+ ADDRESS, key.address, 'Wrong address bound to key.')
+ self.assertEqual(
+ '4096', key.length, 'Wrong key length.')
+ pgp.delete_key(key)
+ self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+
+ def test_get_public_key(self):
+ pgp = openpgp.OpenPGPScheme(self._soledad)
+ self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+ pgp.put_key_raw(PUBLIC_KEY)
+ self.assertRaises(
+ KeyNotFound, pgp.get_key, ADDRESS, private=True)
+ key = pgp.get_key(ADDRESS, private=False)
+ self.assertEqual(ADDRESS, key.address)
+ self.assertFalse(key.private)
+ self.assertEqual(KEY_FINGERPRINT, key.fingerprint)
+ pgp.delete_key(key)
+ self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+
+ def test_openpgp_encrypt_decrypt_asym(self):
+ # encrypt
+ pgp = openpgp.OpenPGPScheme(self._soledad)
+ pgp.put_key_raw(PUBLIC_KEY)
+ pubkey = pgp.get_key(ADDRESS, private=False)
+ cyphertext = openpgp.encrypt_asym('data', pubkey)
+ # assert
+ self.assertTrue(cyphertext is not None)
+ self.assertTrue(cyphertext != '')
+ self.assertTrue(cyphertext != 'data')
+ self.assertTrue(openpgp.is_encrypted_asym(cyphertext))
+ self.assertFalse(openpgp.is_encrypted_sym(cyphertext))
+ self.assertTrue(openpgp.is_encrypted(cyphertext))
+ # decrypt
+ self.assertRaises(
+ KeyNotFound, pgp.get_key, ADDRESS, private=True)
+ pgp.put_key_raw(PRIVATE_KEY)
+ privkey = pgp.get_key(ADDRESS, private=True)
+ plaintext = openpgp.decrypt_asym(cyphertext, privkey)
+ pgp.delete_key(pubkey)
+ pgp.delete_key(privkey)
+ self.assertRaises(
+ KeyNotFound, pgp.get_key, ADDRESS, private=False)
+ self.assertRaises(
+ KeyNotFound, pgp.get_key, ADDRESS, private=True)
+
+ def test_openpgp_encrypt_decrypt_sym(self):
+ cyphertext = openpgp.encrypt_sym('data', 'pass')
+ self.assertTrue(cyphertext is not None)
+ self.assertTrue(cyphertext != '')
+ self.assertTrue(cyphertext != 'data')
+ self.assertTrue(openpgp.is_encrypted_sym(cyphertext))
+ self.assertFalse(openpgp.is_encrypted_asym(cyphertext))
+ self.assertTrue(openpgp.is_encrypted(cyphertext))
+ plaintext = openpgp.decrypt_sym(cyphertext, 'pass')
+ self.assertEqual('data', plaintext)
+
+
+class KeyManagerKeyManagementTestCase(
+ KeyManagerWithSoledadTestCase):
+
+ def test_get_all_keys_in_db(self):
+ km = self._key_manager()
+ km._wrapper_map[OpenPGPKey].put_key_raw(PRIVATE_KEY)
+ # get public keys
+ keys = km.get_all_keys_in_local_db(False)
+ self.assertEqual(len(keys), 1, 'Wrong number of keys')
+ self.assertEqual(ADDRESS, keys[0].address)
+ self.assertFalse(keys[0].private)
+ # get private keys
+ keys = km.get_all_keys_in_local_db(True)
+ self.assertEqual(len(keys), 1, 'Wrong number of keys')
+ self.assertEqual(ADDRESS, keys[0].address)
+ self.assertTrue(keys[0].private)
+
+ def test_get_public_key(self):
+ km = self._key_manager()
+ km._wrapper_map[OpenPGPKey].put_key_raw(PRIVATE_KEY)
+ # get the key
+ key = km.get_key(ADDRESS, OpenPGPKey, private=False,
+ fetch_remote=False)
+ self.assertTrue(key is not None)
+ self.assertEqual(key.address, ADDRESS)
+ self.assertEqual(
+ key.fingerprint.lower(), KEY_FINGERPRINT.lower())
+ self.assertFalse(key.private)
+
+ def test_get_private_key(self):
+ km = self._key_manager()
+ km._wrapper_map[OpenPGPKey].put_key_raw(PRIVATE_KEY)
+ # get the key
+ key = km.get_key(ADDRESS, OpenPGPKey, private=True,
+ fetch_remote=False)
+ self.assertTrue(key is not None)
+ self.assertEqual(key.address, ADDRESS)
+ self.assertEqual(
+ key.fingerprint.lower(), KEY_FINGERPRINT.lower())
+ self.assertTrue(key.private)
+
+ def test_send_key_raises_key_not_found(self):
+ km = self._key_manager()
+ self.assertRaises(
+ KeyNotFound,
+ km.send_key, OpenPGPKey, send_private=False)
+
+ def test_send_private_key_raises_key_not_found(self):
+ km = self._key_manager()
+ km._wrapper_map[OpenPGPKey].put_key_raw(PUBLIC_KEY)
+ self.assertRaises(
+ KeyNotFound,
+ km.send_key, OpenPGPKey, send_private=True,
+ password='123')
+
+ def test_send_private_key_without_password_raises(self):
+ km = self._key_manager()
+ km._wrapper_map[OpenPGPKey].put_key_raw(PUBLIC_KEY)
+ self.assertRaises(
+ NoPasswordGiven,
+ km.send_key, OpenPGPKey, send_private=True)
+
+ def test_send_public_key(self):
+ km = self._key_manager()
+ km._wrapper_map[OpenPGPKey].put_key_raw(PUBLIC_KEY)
+ km._fetcher.put = mock.Mock()
+ km.token = '123'
+ km.send_key(OpenPGPKey, send_private=False)
+ # setup args
+ data = {
+ 'address': km._address,
+ 'keys': [
+ json.loads(
+ km.get_key(
+ km._address, OpenPGPKey).get_json()),
+ ]
+ }
+ url = km._nickserver_url + '/key/' + km._address
+
+ km._fetcher.put.assert_called_once_with(
+ url, data=data, auth=(km._address, '123')
+ )
+
+ def test_fetch_keys_from_server(self):
+ km = self._key_manager()
+ # setup mock
+
+ class Response(object):
+ status_code = 200
+ headers = {'content-type': 'application/json'}
+ def json(self):
+ return {'address': 'anotheruser@leap.se', 'keys': []}
+
+ km._fetcher.get = mock.Mock(
+ return_value=Response())
+ # do the fetch
+ km.fetch_keys_from_server('anotheruser@leap.se')
+ # and verify the call
+ km._fetcher.get.assert_called_once_with(
+ km._nickserver_url + '/key/' + 'anotheruser@leap.se',
+ )
+
+ def test_refresh_keys(self):
+ # TODO: maybe we should not attempt to refresh our own public key?
+ km = self._key_manager()
+ km._wrapper_map[OpenPGPKey].put_key_raw(PUBLIC_KEY)
+ km.fetch_keys_from_server = mock.Mock(return_value=[])
+ km.refresh_keys()
+ km.fetch_keys_from_server.assert_called_once_with(
+ 'leap@leap.se'
+ )
+
+
+# Key material for testing
+KEY_FINGERPRINT = "E36E738D69173C13D709E44F2F455E2824D18DDF"
+PUBLIC_KEY = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+mQINBFC9+dkBEADNRfwV23TWEoGc/x0wWH1P7PlXt8MnC2Z1kKaKKmfnglVrpOiz
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+=MuOY
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+PRIVATE_KEY = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+lQcYBFC9+dkBEADNRfwV23TWEoGc/x0wWH1P7PlXt8MnC2Z1kKaKKmfnglVrpOiz
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+-----END PGP PRIVATE KEY BLOCK-----
+"""