Information protection method for PIN input equipment

A technology for information protection and input equipment, applied in the field of information security, it can solve the problems of weak security, loss of cardholders and operators, and increased theft of passwords, etc., to achieve a good protection effect.

Inactive Publication Date: 2009-09-09
上海杉德金卡信息系统科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The PIN input device of the POS machine stores important information such as the cardholder's PIN and key, but the security of the traditional PIN input device is very weak. The method enters the interior of the device, directly reads the contents of its memory or adds a BUG to steal the password in the software of the PIN input device, and can also obtain confidential information through some other methods of changing its firmware, so that both the cardholder and the operator suffered huge losses

Method used

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  • Information protection method for PIN input equipment
  • Information protection method for PIN input equipment

Examples

Experimental program
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Embodiment

[0017] set needs to be protected as figure 1 The shown FLASH, SRAM and MCU can use a kind of information protection method for PIN input equipment provided by the present invention, and the steps are:

[0018] Step 1. Four normally open switches 5 are fixed on the corners of the main board 2 corresponding to the placement position of the hard frame 1. The connection method of the normally open switches 5 can be as follows: figure 2 As shown, one end of the normally open switch 5 is grounded, and the other end of the normally open switch 5 is respectively connected to the power supply Vcc and the control chip, namely the MCU;

[0019] Step 2. Place the hard frame 1 above the device to be protected and fix it on the main board 2;

[0020] Step 3. After fixing the hard frame 1 described in step 1 on the main board 2, the normally open switch 5 is in a closed state due to the downward pressure on the top of the hard frame 1. If the hard frame 1 is removed, it will be normally op...

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PUM

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Abstract

The invention relates to an information protection method for PIN input equipment. The method is characterized by comprising the following steps: a hard framework is put above a device in need of protection and fixed on a main board, a flexible PCB filled with serpentine wires is pasted around the hard framework and the top surface thereof, one end of the serpentine wires is connected with earth or a power supply and the other end of the serpentine wires is connected with a pin of a control chip, if the hard framework is physically intruded, the serpentine wires generate a detection signal after short circuit or disconnection, and the control chip quickly erases or self-destructs software programs after detecting the signal. The information protection method has the advantages of well protecting important information such as PIN, a key and the like of a cardholder in the PIN input equipment.

Description

technical field [0001] The invention relates to an information protection method for a PIN input device, which is used for protecting confidential information inside the device and belongs to the technical field of information security. Background technique [0002] The PIN input device of the POS machine stores important information such as the cardholder's PIN and key, but the security of the traditional PIN input device is very weak. The method enters the interior of the device, directly reads the contents of its memory or adds a BUG to steal the password in the software of the PIN input device, and can also obtain confidential information through some other methods of changing its firmware, so that both the cardholder and the operator suffered huge losses. Contents of the invention [0003] The purpose of the present invention is to provide an information protection method for a PIN input device. [0004] In order to achieve the above object, the technical solution o...

Claims

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Application Information

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IPC IPC(8): G05B19/02G07F9/00G06F12/14
Inventor 沈树康姜晓西姚皓月倪雷张健
Owner 上海杉德金卡信息系统科技有限公司
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