Method for transmitting data between internet of vehicles devices and device

A method for transmitting data comprising a data requester sends, to a data sender, a data request that carries an identifier of the data requester and a category of requested data. After receiving the data request, the data sender generates an identifier public key using the identifier of the data requester and the category of the data. The data sender encrypts the data requested by the data requester using the identity public key, and sends the encrypted data and identity public key indication information to the data requester. The data requester decrypts the encrypted data using an identifier private key corresponding to the identifier public key to obtain the requested data, and the data requester performs decryption using the identifier private key.