Patent ID: 8806128

Claim:
A method for an information security device with a compact flash (CF) interface, comprising: sending, by a host, an instruction to the information security device with the CF interface using a card reading apparatus; determining, by the information security device, an object being operated by the host according to the instruction; wherein if the object being operated by the host is a flash module of the information security device, the host operates the flash module of the information security device using the card reading apparatus as normal; and if the object being operated by the host is an information security chip of the information security device the host controls a control chip of the information security device to perform the information security operation on an information security chip of the information security device; determining, using the card reading apparatus, the object being operated by the host, wherein if the object is a storage device, the host operates the flash module of the information security device by the card reading apparatus as normal; and if the object is the information security device, the host performs the information security operation on the information security chip of the information security device, wherein the determining, by the information security device, the object being operated by the host comprises the control chip of the information security device determining whether the object being operated by the host with the card reading apparatus is a real section or a virtual section inside the information security device, wherein the real section refers to the section in the flash module of the information security device, and the virtual section is predefined in the information security chip in the information security device.