Safety control method for USB (Universal Serial Bus) interface
A USB interface and security control technology, applied in electrical digital data processing, educational appliances, instruments, etc., can solve the problems of waste food due to choking, limited safety and reliability, and the USB interface can no longer be used, so as to ensure reliability and prevent leakage. Effect
Inactive Publication Date: 2010-12-01
NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology
As most secrecy units do, this is the safest way, but the USB interface can never be used again because of choking.
[0005] (2) Prohibit the use of the USB interface from the BIOS. The BIOS of most new computer motherboards has the option to prohibit the built-in USB port. This method has certain limitations, and not all motherboards have such a function
This patent is essentially a mechanical lock with a USB interface, and its safety and reliability are limited.
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[0025] according to Figure 1-3As shown, when a computer and an external device use the method of the present invention for USB data communication, only the standard USB signal in the computer is connected to the computer USB interface 1 in the present invention, so that the computer finally only outputs the computer security interface 5, and the computer USB can be realized. The purpose of the security control of the interface. The specific preferred implementation is as follows. In the implementation, the USB signal of the external device is connected to the USB device interface 9, so that the external device only outputs the device security interface 6.
[0026] (1) The computer starts and initializes: the single-chip microcomputer 2 controls the power switch 4 in the computer internal intelligent switch device 10 and is in an off state, and does not output power to the safety interface 5; It is in an empty state, neither connected with the USB data line of the single-chip...
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The invention discloses a safety control method for a USB (Universal Serial Bus) interface. The safety control to the USB interface of a computer is carried out by adopting an intelligent switch device (10); one end of the intelligent switch device (10) is a USB interface of the computer (1) while the other end is a safety interface (5) of the computer. In addition, by adopting an intelligent switch device (20), the safety control to the USB interface of an external device is carried out; one end of the intelligent switch device (20) is a USB equipment interface (9) while the other end is an equipment safety interface (6). The invention has the following advantages: the computer and the external device make full use of the convenience and the high efficiency of the USB, and meanwhile, realize the safety control to the USB interface without depending on the computer software and the data encryption technology, so that the credibility of the USB data communication is ensured and the leakage of the important information of the computer and the external device via the USB interface is prevented.
Description
technical field [0001] The invention relates to the technical field of computer security, in particular to a USB interface security control method. Background technique [0002] In recent years, the Universal Serial Bus (USB) has been widely used due to its plug-and-play, hot-swappable, and high-efficiency features. At the same time, the information security problems brought by the computer USB interface are becoming more and more prominent. A portable USB storage product (such as U disk, MP3, mobile hard disk, mobile phone, digital camera, etc.) can easily steal a large amount of important data in the computer instantly through the USB interface, or introduce viruses into the computer, causing huge damage to the computer. security risks. Therefore, it is very necessary to carry out security control on the USB interface, especially for secret-related computers and secret-related USB devices, the security problem of the USB interface is more prominent. [0003] For the sec...
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Inventor 戴新发陈炜陈敬东伍华凤常静刘杰
Owner NO 709 RES INST OF CHINA SHIPBUILDING IND CORP