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| layout | page_title | sidebar_current | description |
|---|---|---|---|
| intro | Nomad vs. Keywhiz | vs-other-keywhiz | Comparison between Nomad and Keywhiz. |
Nomad vs. Keywhiz
Keywhiz is a secret management solution built by Square. Keywhiz has a client/server architecture based on a RESTful API. Clients of Keywhiz access secrets through the API by authenticating with a client certificate or cookie. To allow for flexible consumption of secrets by arbitrary software, clients may also make use of a FUSE filesystem to expose secrets as files on disk, and use Unix file permissions for access control. Human operators may authenticate using a cookie-based authentication either via command line utilities or through a management web interface.
Nomad similarly is designed as a comprehensive secret management solution. The client interaction with Nomad is flexible both for authentication and usage of secrets. Nomad supports mTLS authentication along with many other mechanisms. The goal being to make it easy to authenticate as a machine for programmatic access and as a human for operator usage.
Nomad and Keywhiz expose secrets via an API. The Nomad ACL system is used to protect secrets and gate access, similarly to the Keywhiz ACL system. With Nomad, All auditing is done server side using audit backends.
Keywhiz focuses on storage and distribution of secrets and supports rotation through secret versioning, which is possible in the Keywhiz UI and command-line utilities. Nomad also supports dynamic secrets and generating credentials on-demand for fine-grained security controls, but adds first class support for non-repudiation. Key rotation is a first class concern for Keywhiz and Nomad, so that no external systems need to be used.
Lastly Nomad forces a mandatory lease contract with clients. All secrets read from Nomad have an associated lease which enables operators to audit key usage, perform key rolling, and ensure automatic revocation. Nomad provides multiple revocation mechanisms to give operators a clear "break glass" procedure after a potential compromise.