[libvirt] libvirt secret support password or encryption keys?

Hi all, # man virsh ... SECRET COMMMANDS The following commands manipulate "secrets" (e.g. passwords, passphrases -----> secret-set-value only support "passphrases" and encryption keys). Libvirt can store secrets independently from their So, will libvirt support other 2 kinds of secrets use, and other objects (e.g. volumes or domains) can refer to the secrets in the future? for encryption or possibly other uses. Secrets are identified using an UUID. See <http://libvirt.org/formatsecret.html> for documentation of the XML format used to represent properties of secrets. ... zhpeng BR