Virtualization of Internet of Things(IoT) is a concept of dynamically
building customized high-level IoT services which
rely on the real time data streams from low-level physical
IoT sensors. Security in IoT virtualization is challenging,
because with the growing number of available (building
block) services, the number of personalizable virtual
services grows exponentially. This paper proposes Service
Object Capability(SOC) ticket system, a decentralized access
control mechanism between servers and clients to effi-
ciently authenticate and authorize each other without using
public key cryptography. SOC supports decentralized
partial delegation of capabilities specified in each server/-
client ticket. Unlike PKI certificates, SOC’s authentication
time and handshake packet overhead stays constant regardless
of each capability’s delegation hop distance from the
root delegator. The paper compares SOC’s security bene-
fits with Kerberos and the experimental results show SOC’s
authentication incurs significantly less time packet overhead
compared against those from other mechanisms based on
RSA-PKI and ECC-PKI algorithms. SOC is as secure as,
and more efficient and suitable for IoT environments, than
existing PKIs and Kerberos
