Entity identification and security solutions in IoT based on PKI and Blockchain technology

In networked information systems security basic problem is reliable entity identification and trustworthy system history creation. This is especially challenging task in the networks with computationally constrained devices like Internet of Things (IoT) is. In this paper we considered standard approaches to these problems, standard X.509 certificates and log files, showed that they are not appropriate for IoT and suggest solutions that better fit to IoT. Suggested solutions are applied in Institute VLATACOM current projects.