Data sending method and device

• Main Authors: LI LIHUA, CAI CHUNJIAN
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The embodiment of the invention provides a data sending method and device. According to the data sending method and device provided by the embodiment of the invention, the encrypted data received last time is decrypted, and the first encryption index packaged in the encrypted data is obtained; an encryption key corresponding to the first encryption index and a second encryption index are obtainedfrom a preset key mapping table; through the encryption key, data to be sent are encrypted and sent to a target terminal, and the data to be sent comprise the second encryption index. Therefore, the data is encrypted by setting the encryption key in the key mapping table, and the safety of the key is ensured through the corresponding relationship between the encryption index and the encryption key, so that the resources occupied by encryption and decryption calculation are greatly reduced, the key does not need to be generated, and the operation and maintenance cost of the system is reduced. 本发明实施例提供的数据发送方法和装置，通过对上一次接