Data transmission method applied to port network security and storage medium

The invention discloses a data transmission method applied to port network security and a storage medium, and the data transmission method comprises the following steps: data type definition: modals of a multi-modal data transmission protocol comprise one or more of texts, images, videos and audios, and each modal corresponds to a unique identifier, defining a format specification of each modal transmission; data packaging: packaging each mode into uniform data according to the format specification defined by each mode; and data transmission and verification: performing verification, encryption and digital signature on the data, transmitting a data packet to a receiving end by the transmitting end according to the selected data transmission mode, and receiving the data packet by the receiving end and verifying the data packet. Through a series of steps of data type definition, data packaging, data transmission and verification and the like, the method ensures the security of data transmission in a complex env