Data transmission method and device

• Main Authors: XU BO, TIAN JUN, CHEN HUASHENG, REN GUOWEI
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention provides a data transmission method and device, and the method comprises the steps: a proxy end obtains to-be-transmitted data, obtains a first quantum key from a quantum network, carries out the encryption of the to-be-transmitted data based on the first quantum key, obtains encrypted data, and transmits the encrypted data to a server; and assembling the encrypted data into a message with the encrypted data, and transmitting the message to a management end. And the management end obtains a second quantum key symmetrical to the first quantum key from the quantum network, and then the management end decrypts the encrypted data in the message based on the second quantum key to obtain the to-be-transmitted data. According to the method, the quantum key is obtained, and the to-be-transmitted data is encrypted and decrypted based on the quantum key, so that the encrypted transmission work of the to-be-transmitted data is completed. The updating frequency of the quantum key is high, the quantum key up