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Barbican is a ReST API designed for the secure storage, provisioning and management of secrets, including in OpenStack environments. Mirror of code maintained at

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Barbican is a REST API designed for the secure storage, provisioning and management of secrets. It is aimed at being useful for all environments, including large ephemeral Clouds.

Barbican is an OpenStack project developed by the

Barbican Project Team
_ with support from
Rackspace Hosting >_, EMC, Ericsson,
Johns Hopkins University, HP, Red Hat, Cisco Systems, and many more.

The full documentation can be found on the

Barbican Developer Documentation

To file a bug, use our bug tracker on

OpenStack Storyboard

Release notes for the project can be found at

Future design work is tracked at

For development questions or discussion, use the

mailing list 
_ at
[email protected]
and let us know what you think, just add
to the subject. You can also join our IRC channel

Client Libraries

  • python-barbicanclient
    _ - A convenient Python-based library to interact with the Barbican API.

Getting Started

Please visit our

Users, Developers and Operators documentation
_ for details.

Why Should You Use Barbican?

The current state of key management is atrocious. While Windows does have some decent options through the use of the Data Protection API (DPAPI) and Active Directory, Linux lacks a cohesive story around how to manage keys for application use.

Barbican was designed to solve this problem. The system was motivated by internal Rackspace needs, requirements from

_ and a realization that the current state of the art could use some help.

Barbican will handle many types of secrets, including:

  • Symmetric Keys - Used to perform reversible encryption of data at rest, typically using the AES algorithm set. This type of key is required to enable features like
    encrypted Swift containers and Cinder
    Cloud Backups 
    , etc.
  • Asymmetric Keys - Asymmetric key pairs (sometimes referred to as
    public / private keys
    _) are used in many scenarios where communication between untrusted parties is desired. The most common case is with SSL/TLS certificates, but also is used in solutions like SSH keys, S/MIME (mail) encryption and digital signatures.
  • Raw Secrets - Barbican stores secrets as a base64 encoded block of data (encrypted, naturally). Clients can use the API to store any secrets in any format they desire.

For the symmetric and asymmetric key types, Barbican supports full life cycle management including provisioning, expiration, reporting, etc.

Design Goals

  1. Provide a central secret-store capable of distributing secret / keying material to all types of deployments including ephemeral Cloud instances.
  2. Support reasonable compliance regimes through reporting and auditability.
  3. Application adoption costs should be minimal or non-existent.
  4. Build a community and ecosystem by being open-source and extensible.
  5. Improve security through sane defaults and centralized management of
    policies for all secrets
  6. Provide an out of band communication mechanism to notify and protect sensitive assets.

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