Hwan Park, Mi-sun Kim, Jae-hyun Seo

KIPS Transactions on Computer and Communication Systems, Vol. 8, No. 6, pp. 139-150, Jun. 2019
https://doi.org/10.3745/KTCCS.2019.8.6.139,   PDF Download:
Keywords: IoT, Mutual Authentication, Protocol, Blockchain, Token
Abstract

IoT(Internet of Things) security is becoming increasingly important because IoT potentially has a variety of security threats, including limited hardware specifications and physical attacks. This paper is a study on the certification technology suitable for the lightened IoT environment, and we propose a system in which many gateways share authentication information and issue authentication tokens for mutual authentication using blockchain. The IoT node can be issued an authentication token from one gateway to continuously perform authentication with a gateway in the block-chain network using an existing issued token without performing re-authentication from another gateway participating in the block-chain network. Since we do not perform re-authentication for other devices in a blockchain network with only one authentication, we proposed multi phase authentication consisting of device authentication and message authentication in order to enhance the authentication function. By sharing the authentication information on the blockchain network, it is possible to guarantee the integrity and reliability of the authentication token.

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