In one embodiment, a method includes receiving, in a first device, at least one of a first symmetric key and a first asymmetric key in a common key management structure, the common key management structure to accommodate asymmetric keys and symmetric keys, and further including security policy information to enable communication between the first device of a first domain of an Internet of Things (IoT) network and a second device of a second domain of the IoT network according to an inter-domain security policy; and sending a first message directly from the first device to the second device according to the security policy information of the common key management structure. Other embodiments are described and claimed.