Definitions associated with all BLE attributes: characteristics, descriptors, etc.
Attribute is, notionally, a superclass of
but is not defined as a Python superclass of those classes.
You cannot create an instance of
security mode: access not allowed
security_mode: no security (link is not encrypted)
security_mode: unauthenticated encryption, without man-in-the-middle protection
security_mode: authenticated encryption, with man-in-the-middle protection
security_mode: LESC encryption, with man-in-the-middle protection
security_mode: unauthenticated data signing, without man-in-the-middle protection
security_mode: authenticated data signing, without man-in-the-middle protection