Anti-cracking structure and method for device

Abstract

The invention discloses an anti-cracking structure and method of a device. The device comprises a metal shell 1 and a PCBA board. The anti-cracking structure comprises a metal shell 1, a connecting piece 2, a copper sheet electrode 3, a capacitance detection part 4 and an independent power supply 5, wherein the metal shell 1 is electrically connected with the PCBA board in a common ground mode through the connecting piece 2 composed of a copper column, a screw or conductive foam; the copper sheet electrode 3 is a large-area conductive copper sheet arranged on the PCBA board; and a stray capacitor is formed between the metal shell 1 and the copper sheet electrode 3, the capacitance value of the stray capacitor is detected by the capacitance detection part 4, and the capacitance detection part 4 is powered by an independent power supply 5 on the PCBA board.

Description

technical field [0001] The invention relates to the technical field of device protection, in particular to a device anti-cracking structure and a device anti-cracking method. Background technique [0002] Modern electronic equipment is often marked with instructions such as "no disassembly without authorization". Such instructions may be for the positioning of after-sales maintenance, or for the protection of its own technology, or for the protection of information inside the terminal. Especially electronic payment terminals, because they carry and process sensitive data information such as bank card numbers, passwords, encryption keys, etc., once leaked, it will cause personal or bank property losses. In the past, people always focused on the layer-by-layer encryption protection of transaction data, while ignoring the physical protection of the terminal itself. However, for some professional information thieves, they only need to disassemble the electronic payment terminal ...

AI Technical Summary

Problems solved by technology

In the prior art, there are two types of device anti-cracking devices: the first one is a physical anti-cracking device, such as a high-strength structural lock to prevent the device from being disassembled by others, but the physical anti-cracking device cannot detect whether the device has been disassembled; The second type is the anti-cracking device of the electrical detection circuit, which uses electrical contact to detect whether the device has been disassembled. However, the anti-cracking device of the electrical detection circuit has the risk of being unable to detect after power failure, resulting in poor confidentiality of the functional information of the device , low application security performance

Images