Merge remote-tracking branch 'drebs/feature/key-manager' into develop

6 files changed, 1946 insertions, 0 deletions

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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+ZtQ/VymwFL3XdUWV6B/hU4PVAFvO3qlOtdJ6TpE+nEWgcWjCv5g7RjXX
+=MuOY
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+PRIVATE_KEY = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+lQcYBFC9+dkBEADNRfwV23TWEoGc/x0wWH1P7PlXt8MnC2Z1kKaKKmfnglVrpOiz
+iLWoiU58sfZ0L5vHkzXHXCBf6Eiy/EtUIvdiWAn+yASJ1mk5jZTBKO/WMAHD8wTO
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+-----END PGP PRIVATE KEY BLOCK-----
+"""