This application provides an identity management method, a device, a communications network, and a storage medium. The method includes generating, by a first control plane node, a first identification, a first public key, and a first private key for user equipment. The method also includes signing the first identification and the first public key based on a second private key of the first control plane node, to obtain first transaction data. The method further includes broadcasting the first transaction data in a blockchain network, where the first transaction data is to be used for consensus calculation in the blockchain network.