mirror of
https://github.com/ceph/ceph
synced 2024-12-27 05:53:20 +00:00
62 lines
2.4 KiB
ReStructuredText
62 lines
2.4 KiB
ReStructuredText
==========
|
|
Encryption
|
|
==========
|
|
|
|
.. versionadded:: Luminous
|
|
|
|
The Ceph Object Gateway supports server-side encryption of uploaded objects,
|
|
with 3 options for the management of encryption keys. Server-side encryption
|
|
means that the data is sent over HTTP in its unencrypted form, and the Ceph
|
|
Object Gateway stores that data in the Ceph Storage Cluster in encrypted form.
|
|
|
|
.. note:: Requests for server-side encryption must be sent over a secure HTTPS
|
|
connection to avoid sending secrets in plaintext. If a proxy is used
|
|
for SSL termination, ``rgw trust forwarded https`` must be enabled
|
|
before forwarded requests will be trusted as secure.
|
|
|
|
Customer-Provided Keys
|
|
======================
|
|
|
|
In this mode, the client passes an encryption key along with each request to
|
|
read or write encrypted data. It is the client's responsibility to manage those
|
|
keys and remember which key was used to encrypt each object.
|
|
|
|
This is implemented in S3 according to the `Amazon SSE-C`_ specification.
|
|
|
|
As all key management is handled by the client, no special configuration is
|
|
needed to support this encryption mode.
|
|
|
|
Key Management Service
|
|
======================
|
|
|
|
This mode allows keys to be stored in a secure key management service and
|
|
retrieved on demand by the Ceph Object Gateway to serve requests to encrypt
|
|
or decrypt data.
|
|
|
|
This is implemented in S3 according to the `Amazon SSE-KMS`_ specification.
|
|
|
|
In principle, any key management service could be used here, but currently
|
|
only integration with `Barbican`_ is implemented.
|
|
|
|
See `OpenStack Barbican Integration`_.
|
|
|
|
Automatic Encryption (for testing only)
|
|
=======================================
|
|
|
|
A ``rgw crypt default encryption key`` can be set in ceph.conf to force the
|
|
encryption of all objects that do not otherwise specify an encryption mode.
|
|
|
|
The configuration expects a base64-encoded 256 bit key. For example::
|
|
|
|
rgw crypt default encryption key = 4YSmvJtBv0aZ7geVgAsdpRnLBEwWSWlMIGnRS8a9TSA=
|
|
|
|
.. important:: This mode is for diagnostic purposes only! The ceph configuration
|
|
file is not a secure method for storing encryption keys. Keys that are
|
|
accidentally exposed in this way should be considered compromised.
|
|
|
|
|
|
.. _Amazon SSE-C: https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html
|
|
.. _Amazon SSE-KMS: http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingKMSEncryption.html
|
|
.. _Barbican: https://wiki.openstack.org/wiki/Barbican
|
|
.. _OpenStack Barbican Integration: ../barbican
|