State Grid Corporation of China

State Grid Digital Technology Holding Co., Ltd.

State Grid Xiong'an Financial Technology Group Co., Ltd.

Ping Zhen

Yang Wang

Dong Wang

Wei Jiang

Lei Zhou

Xin Shi

Jiaxing Xuan

Guomin Li

Wanli Ma

Junwei Ma

Dongwei Yang

Provided are a method and device employing a smart contract to realize identity-based key management. The method comprises: running a smart contract, and executing a key management process, wherein the key management process comprises: when a key of a target user requires an update and the target user is not a supervised user, generating a master public key and a master private key pertaining to the target user; acquiring, from a blockchain, identity information of the target user; generating a first target private key according to the master public key and the master private key pertaining to the target user and the identity information of the target user; and replacing a current private key of the target user with the first target private key.

Method and device employing smart contract to realize identity-based key management

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Beijing, China

Ping Zhen