System data transmission method, transmission device and system data transmission system

The invention provides a system data transmission method, a system data transmission device and a system data transmission system. The system data transmission method comprises the following steps: a source system determines first system data to be sent, and compresses and encrypts the first system data according to a compression and encryption mode selected by a user; the source system adds a first data fingerprint to the compressed and encrypted first system data, wherein the first data fingerprint is used for proving that the first system data is not subjected to other processing except the compression and encryption processing; the source system sends the first system data added with the first data fingerprint to the data exchange device; the data exchange device sends the first system data in the data exchange device to the target system; and the target system stores the first system data according to the first data fingerprint. 本发明提出了一种系统数据的传输方法、传输装置及系统数据的传输系统。其中，系统数据的传输方法，包括：来源系统确定待发送的第一系统数据，并根据用户选择的压缩