  In the next-generation computing, the role of cloud, internet, and smart
devices will be capacious. Nowadays we all are familiar with the word smart.
This word is used a number of times in our daily life. The Internet of Things
(IoT) will produce remarkable different kinds of information from different
resources. It can store and process big data in the cloud. The fogging acts as
an interface between cloud and IoT. The IoT nodes are also known as fog nodes,
these nodes are able to access anywhere within the range of the network. The
blockchain is a novel approach to record the transactions in a sequence
securely. Developing new blockchains based integrated framework in the
architecture of the IoT is one of the emerging approaches to solving the issue
of communication security among the IoT public nodes. This research explores a
novel approach to integrate blockchain technology with the fog and IoT networks
and provides communication security to the internet of smart devices. The
framework is tested and implemented in the IoT network. The results are found
positive.
