As current information systems and network architectures evolve to be more lightweight, pervasive, and interactive – such as the cloud and Internet of Things (IoT) – there is need for an access control mechanism to support the requirements of decentralization, scalability, and trust for accessing objects, all of which are challenging for traditional mechanisms. According to a recent publication from NIST, blockchains may offer features such as decentralization, high confidence, and tamper-resistance, which are advantages to solving auditability, resource consumption, scalability, central authority, and trust issues – all of which are challenges for network access control by traditional mechanisms.

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