Encryption and decryption method based on asymmetric algorithm

• Main Authors: HAI WENTAO, MA YINGHONG
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to an encryption and decryption method based on an asymmetric algorithm, and the method comprises the steps: employing an asymmetric SM2 encryption algorithm in an application system-level message transmission process, safely distributing a secret key of a symmetric SM4 encryption algorithm and secret keys of a unified sender and a unified receiver in a digital envelope manner, carrying out the encryption through employing a unified secret key, and carrying out the end-to-end information transmission. According to the invention, the security of application system-level data and message communication can be improved. 本发明涉及一种基于非对称算法的加密解密方法，在应用系统级消息传输的过程中，采用非对称SM2加密算法，以数字信封的方式安全分发对称SM4加密算法的密钥，统一发送方和接收方的密钥后，使用统一密钥加密后进行端到端的信息传输。本发明可提高应用系统级数据和消息通信的安全性。