Research on the Blockchain Technology in the Security of Internet of things

摘要

At present, with the spread of Internet of things technology, IoT security problems gradually appear, blockchain as a new security project has been paid great attention to by the academic community. Firstly, this paper expounds the technical characteristics of blockchain and clarifies the technical advantages of blockchain. Secondly, the security model of the combination of blockchain and IoT is briefly described, and the workflow of blockchain is analyzed. Thirdly, countermeasures are proposed for the problems existing in the security of consensus mechanism, block capacity and transaction efficiency, the security of user's wallet and the security of intelligent contract in the blockchain.