In one embodiment, a method includes: request enrollment of the device with an identity provider, the enrollment including at least one role for the device for a publish-subscribe protocol of a distributed network; receiving a device identity credential from the identity provider and store the device identity credential in the device; receiving a ticket credential for a first topic associated with a first publisher, the ticket credential including the at least one role for the device; receiving a group key from a key manager for a group associated with the publish-subscribe protocol; and receiving content for the first topic in the device, the content protected by the group key.