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‎docs/howto/queryable-encryption.rst‎

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@@ -35,21 +35,11 @@ Configuring the ``DATABASES`` setting
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=====================================
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In addition to the :ref:`database settings <configuring-databases-setting>`
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required to use Django MongoDB Backend, Queryable Encryption requires you to
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configure a separate encrypted database connection in your
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:setting:`django:DATABASES` setting.
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required to use Django MongoDB Backend, Queryable Encryption requires
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configuring a separate database connection that uses use PyMongo's
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:class:`~pymongo.encryption_options.AutoEncryptionOpts`.
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.. admonition:: Encrypted database
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An encrypted database is a separate database connection in your
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:setting:`django:DATABASES` setting that is configured to use PyMongo's
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:class:`automatic encryption
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<pymongo.encryption_options.AutoEncryptionOpts>`.
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Here's how to configure an encrypted database using a local KMS provider and
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encryption keys stored in the ``encryption.__keyVault`` collection::
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import os
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Here's a sample configuration using a local KMS provider::
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from pymongo.encryption_options import AutoEncryptionOpts
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@@ -63,25 +53,33 @@ encryption keys stored in the ``encryption.__keyVault`` collection::
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"encrypted": {
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"ENGINE": "django_mongodb_backend",
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"HOST": "mongodb+srv://cluster0.example.mongodb.net",
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"NAME": "my_database_encrypted",
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"USER": "my_user",
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"PASSWORD": "my_password",
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"PORT": 27017,
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"NAME": "my_encrypted_database",
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# ...
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"OPTIONS": {
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"auto_encryption_opts": AutoEncryptionOpts(
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key_vault_namespace="encryption.__keyVault",
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kms_providers={"local": {"key": os.urandom(96)}},
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key_vault_namespace="my_encrypted_database.__keyVault",
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kms_providers={
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"local": {
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# Generated by os.urandom(96)
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"key": (
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b'-\xc3\x0c\xe3\x93\xc3\x8b\xc0\xf8\x12\xc5#b'
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b'\x19\xf3\xbc\xccR\xc8\xedI\xda\\ \xfb\x9cB'
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b'\x7f\xab5\xe7\xb5\xc9x\xb8\xd4d\xba\xdc\x9c'
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b'\x9a\xdb9J]\xe6\xce\x104p\x079q.=\xeb\x9dK*'
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b'\x97\xea\xf8\x1e\xc3\xd49K\x18\x81\xc3\x1a"'
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b'\xdc\x00U\xc4u"X\xe7xy\xa5\xb2\x0e\xbc\xd6+-'
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b'\x80\x03\xef\xc2\xc4\x9bU'
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},
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},
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)
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},
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},
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}
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.. admonition:: Local KMS provider key
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In the example above, a random key is generated for the local KMS provider
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using ``os.urandom(96)``. In a production environment, you should securely
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:ref:`store and manage your encryption keys
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<manual:qe-fundamentals-kms-providers>`.
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``key_vault_namespace`` specifies where to store the data encryption keys.
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The database name of the key vault must be the same as in ``"NAME"``. The
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vault's collection name can be whatever you wish, but by convention, it's often
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``__keyVault``.
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.. _qe-configuring-database-routers-setting:
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Similar to configuring the :ref:`DATABASE_ROUTERS
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<configuring-database-routers-setting>` setting for
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:doc:`embedded models </topics/embedded-models>`, Queryable Encryption
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requires a :setting:`DATABASE_ROUTERS <django:DATABASE_ROUTERS>` setting to
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route database operations to the encrypted database.
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:doc:`embedded models </topics/embedded-models>`, Queryable Encryption requires
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a :setting:`DATABASE_ROUTERS` setting to route database operations to the
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encrypted database.
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The following example shows how to configure a router for the "myapp"
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The following example shows how to configure a router for the ``"myapp"``
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application that routes database operations to the encrypted database for all
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models in that application::
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:setting:`django:DATABASE_ROUTERS` setting::
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# settings.py
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DATABASE_ROUTERS = ["myapp.routers.EncryptedRouter"]
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DATABASE_ROUTERS = [
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"django_mongodb_backend.routers.MongoRouter",
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"myapp.routers.EncryptedRouter",
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]
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.. _qe-configuring-kms:
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Configuring the Key Management Service (KMS)
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============================================
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A local KMS provider with a hardcoded key is suitable for local development and
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testing, but production environment, you should securely :ref:`store and manage your
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encryption keys <manual:qe-fundamentals-kms-providers>`.
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To use Queryable Encryption, you must configure a Key Management Service (KMS)
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to store and manage your encryption keys. Django MongoDB Backend allows you to
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configure multiple KMS providers and select the appropriate provider for each
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model using a custom database router.
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The KMS is responsible for managing the encryption keys used to encrypt and
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decrypt data. The following table summarizes the available KMS configuration
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options followed by an example of how to use them.
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+-------------------------------------------------------------------------+--------------------------------------------------------+
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| :setting:`KMS_CREDENTIALS <DATABASE-KMS-CREDENTIALS>` | A dictionary of Key Management Service (KMS) |
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| | credentials configured in the |
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| | :setting:`django:DATABASES` setting. |
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+-------------------------------------------------------------------------+--------------------------------------------------------+
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| :class:`kms_providers <pymongo.encryption_options.AutoEncryptionOpts>` | A dictionary of KMS provider credentials used to |
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| | access the KMS with ``kms_provider``. |
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+-------------------------------------------------------------------------+--------------------------------------------------------+
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| :ref:`kms_provider <qe-configuring-database-routers-setting>` | A single KMS provider name |
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| | configured in your custom database |
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| | router. |
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+-------------------------------------------------------------------------+--------------------------------------------------------+
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Example of KMS configuration with ``aws`` in your :class:`kms_providers
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<pymongo.encryption_options.AutoEncryptionOpts>` setting::
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to store and manage the encryption keys used to encrypt and decrypt data.
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There are two primary configuration points:
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#. The ``kms_providers`` parameter of
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:class:`~pymongo.encryption_options.AutoEncryptionOpts` (see the
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``kms_providers`` parameter in
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:class:`~pymongo.encryption_options.AutoEncryptionOpts` for the available
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providers (``aws``, ``azure``, ``gcp``, etc.) and provider options).
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#. The :setting:`KMS_CREDENTIALS <DATABASE-KMS-CREDENTIALS>` inner option of
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:setting:`DATABASES`. The keys for each provider are documented under the
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``master_key`` parameter of
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:meth:`~pymongo.encryption.ClientEncryption.create_data_key`.
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Here's an example of KMS configuration with ``aws``::
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from pymongo.encryption_options import AutoEncryptionOpts
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},
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"KMS_CREDENTIALS": {
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"aws": {
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"key": os.getenv("AWS_KEY_ARN", ""),
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"region": os.getenv("AWS_KEY_REGION", ""),
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"key": "...", # Amazon Resource Name
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"region": "...", # AWS region
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},
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},
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},
@@ -193,22 +191,17 @@ the provider for each model in your :ref:`database router
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Configuring the ``encrypted_fields_map`` option
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===============================================
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When you configure the :ref:`DATABASES <qe-configuring-databases-setting>`
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setting for Queryable Encryption *without* specifying an
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``encrypted_fields_map``, Django MongoDB Backend will create encrypted
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collections, including encryption keys, when you :ref:`run migrations for models
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that have encrypted fields <qe-migrations>`.
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Encryption keys are created when you :ref:`run migrations for models that have
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encrypted fields <qe-migrations>`.
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Encryption keys for encrypted fields are stored in the key vault specified in
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the :ref:`DATABASES <qe-configuring-kms>` setting. To see the keys created by
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Django MongoDB Backend, along with the entire schema, you can run the
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:djadmin:`showencryptedfieldsmap` command::
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To see the encrypted fields map for your models (which includes the encryption
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key IDs), run the :djadmin:`showencryptedfieldsmap` command::
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$ python manage.py showencryptedfieldsmap --database encrypted
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Use the output of :djadmin:`showencryptedfieldsmap` to set the
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``encrypted_fields_map`` in :class:`AutoEncryptionOpts
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<pymongo.encryption_options.AutoEncryptionOpts>` in your Django settings::
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In a production environment, it's recommended to include this map in your
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settings to protect against a malicious server advertising a false encrypted
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fields map::
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from bson import json_util
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from pymongo.encryption_options import AutoEncryptionOpts
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},
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}
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.. admonition:: Security consideration
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Supplying an encrypted fields map provides more security than relying on an
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encrypted fields map obtained from the server. It protects against a
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malicious server advertising a false encrypted fields map.
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Configuring the Automatic Encryption Shared Library
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===================================================
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You can :ref:`download the shared library
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<manual:qe-csfle-shared-library-download>` from the
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:ref:`manual:enterprise-official-packages` and configure it in your Django
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settings using the ``crypt_shared_lib_path`` option in
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:class:`AutoEncryptionOpts <pymongo.encryption_options.AutoEncryptionOpts>`.
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:ref:`manual:enterprise-official-packages`. The shared library is
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platform‑specific. Make sure to download the correct version for your operating
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system and architecture.
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The following example shows how to configure the shared library in your Django
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settings::
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To configure it in your Django settings, use
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:class:`~pymongo.encryption_options.AutoEncryptionOpts`\'s
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``crypt_shared_lib_path`` parameter::
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from pymongo.encryption_options import AutoEncryptionOpts
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crypt_shared_lib_path="/path/to/mongo_crypt_shared_v1.dylib",
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)
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},
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# ...
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},
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}
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.. admonition:: Dynamic library path configuration
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The Automatic Encryption Shared Library is platform‑specific. Make sure to
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download the correct version for your operating system and architecture,
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and configure your environment so the system can locate it.
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Use the following variables depending on your platform:
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You may also need to configure an environment variable so that your system
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can locate the library:
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+---------------+---------------------------------+
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| **Platform** | **Environment Variable** |
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| Linux | ``LD_LIBRARY_PATH`` |
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+---------------+---------------------------------+
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For example on macOS, you can set the ``DYLD_FALLBACK_LIBRARY_PATH``
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For example, on macOS you can set the ``DYLD_FALLBACK_LIBRARY_PATH``
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environment variable in your shell before starting your Django application::
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$ export DYLD_FALLBACK_LIBRARY_PATH="/path/to/mongo_crypt_shared_v1.dylib:$DYLD_FALLBACK_LIBRARY_PATH"

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