Design of Blockchain Smart Contract Based on Ring Signature

In view of the current blockchain network transaction data information is completely open and transparent, which causes that identity privacy information of the trading parties is faced major security risks, a smart contract scheme based on ring signature is proposed after the research and analysis of the blockchain smart contract. The ring signature algorithm is invoked during the transaction to authenticate the identity of the transaction initiator, so that the identity of the sender can be hidden in a group of public key rings, and the user can achieve the anonymous transaction on the blockchain. Furthermore, the smart contract based on ring signature is applied to the on-chain storage of data information of Internet of Things devices, and its related functions are verified and analyzed by experiments. It proves that this scheme is feasible, and can effectively realize the secure on-chain storage and management of data information of Internet of Things devices.