The invention provides a method, a
system and equipment for transmitting a symmetric key of an internet region and a storage medium, and the method comprises the steps: opening a
bank system client APP, randomly generating a domestic secret sm4 symmetric key when the APP is started for the first time, encrypting the generated domestic secret sm4 symmetric key by using a domestic secret sm2 private key, and transmitting the encrypted domestic secret sm4 symmetric key to a
server; respectively encrypting a
system timestamp, a unique request serial number and an equipment unique number by using a domestic
password sm4 symmetric key, signing the encrypted domestic
password sm4 symmetric key, the system
timestamp, the unique request serial number and the equipment unique number in sequence by using an sm2 private key, and sending a request to a
server; the
server receives the symmetric secret key transmission interface request and performs
data verification and
processing; and then the
client APP processes the interface calling result. According to the method, the symmetric
encryption SM4
algorithm secret key is transmitted by using the national secret asymmetric SM2
algorithm, and after the first transmission is successful, the SM4
algorithm is used for performing data
encryption and decryption on subsequent interface calling, so that the interface calling efficiency is greatly improved while the safe calling of the interface is ensured.