This endpoint retrieves a specific cypher key. The value of the key is decrypted and returned as data. It may be a String or an object with many {"key":"value"} pairs.
The type depends on the cypher mount's capabilities and what type of data was written to the key.
For example the secret/ mount allows either a string or an object, while the password/ mount will always store and return a string.
This endpoint can also create a key. This only applies to mount types uuid, key, password. Refer to the POST endpoint for more information.