Add sagecipher to 3rd-party backend list
@@ -154,6 +154,9 @@ use-cases. Simply install them to make them available:
- `bitwarden-keyring <https://pypi.org/project/bitwarden-keyring/0.1.0/>`_
- a backend that stores secrets in the `BitWarden <https://bitwarden.com/>`_
password manager.
+- `sagecipher <https://pypi.org/project/sagecipher>`_ - an encryption
+ backend which uses the ssh agent protocol's signature operation to
+ derive the cipher key.
Write your own keyring backend
