CN102819915B - Tamper switch and financial machine - Google Patents
Tamper switch and financial machine Download PDFInfo
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- CN102819915B CN102819915B CN201210283590.4A CN201210283590A CN102819915B CN 102819915 B CN102819915 B CN 102819915B CN 201210283590 A CN201210283590 A CN 201210283590A CN 102819915 B CN102819915 B CN 102819915B
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Abstract
The invention discloses a tamper switch and a financial machine, and aims to provide the tamper switch which can prevent drilling attack and is safe. The tamper switch comprises a circuit board and a conductive adhesive, wherein an inner ring, an intermediate ring surrounding the inner ring and an outer ring surrounding the intermediate ring are arranged on the circuit board; the intermediate ring consists of a plurality of bonding pads which are separated and are paired; each pair of bonding pads form a group of signal switch; the conductive adhesive comprises an inner conductive layer pressed on the inner ring, an intermediate conductive layer pressed on the intermediate ring and an outer conductive layer pressed on the outer ring; and the intermediate conductive layer is separated into a plurality of intermediate conductive layers and are pressed on each group of the signal switch one by one. The temper switch can be used for financial industries, such as banks and securities, needing to encrypt data, and used for protecting sensitive information such as the account, the currency amount and password of clients.
Description
Technical field
The present invention relates to financial machine and tool, especially relate to a kind of breaking-proof switch of financial machine and tool.
Background technology
Financial payment facility, security situation as POS, ATM etc. is more and more severeer, technological attack means for financial payment facility get more and more, and uncap, cut, financial transaction key that the various methodologies such as chemical medicinal liquid burn into power analysis goes to detect the storage of facility internal memory as adopted.For this reason, financial payment tissue defines strict safety technique Valuation Standard, is called PCI(Payment Card Industry, payment card industry) safety certification standard, only have the equipment detected by Valuation Standard to be just considered to meet safety requirements, current known attack means can be resisted.
In Valuation Standard, security module must by close protection, and in the realization of protection security module, breaking-proof switch is a kind of the most frequently used method.Breaking-proof switch refers to that, after facility have been assembled, physical construction pushes down switch, makes it close, is not triggered.When illegally uncapping, physical construction lost efficacy, and switch disconnects, thus triggered.
Refer to Fig. 5 and Fig. 6.Existing breaking-proof switch comprises circuit board 81 and conducting resinl 82.Wherein, circuit board 81 outer ring 813 that comprises inner ring 811, be located at the centre circle 812 outside inner ring and be located at outside centre circle.Inner ring, centre circle form one group of signaling switch.Inner ring, centre circle and outer ring are the pad of conduction.After machine has assembled, conducting resinl 82 is pressed on inner ring and centre circle and realizes the closed of signaling switch.When illegally being uncapped, conducting resinl disconnects and causes signaling switch to be opened a way, thus causes triggering.Outer ring is that against short-circuit is attacked and designs.Common attack attempts to fill with conductive glue to make inner ring and centre circle circuit keep short circuit, thus remove conducting resinl to realize and illegally uncap and do not cause triggering.The spacing of inner ring, centre circle and outer ring is very little, when conductive glue is injected, is easy to also flow on outer ring, causes Internal and external cycle short circuit, thus triggers.
Have recently emerged a kind of novel attack, the mechanical compression leg above conducting resinl is started with, and pierces mechanical compression leg with Miniature electric drill, bore conducting resinl, pour into non-conductive glue, conducting resinl is sticked on pad, glue itself is non-conductive, even if be seeped on outer ring, also can not trigger short circuit and attack.Like this when illegally uncapping, because breaking-proof switch is by sticky dead, cause triggering.
Therefore, be necessary a kind of new breaking-proof switch design of exploitation, above-mentioned attack can be avoided, do not reduce again the security feature of original breaking-proof switch.
Summary of the invention
The present invention is easily glued the technical matters extremely causing triggering to solve prior art breaking-proof switch, provides a kind of breaking-proof switch and financial machine and tool.
For solving the problems of the technologies described above, the technical solution used in the present invention is a kind of breaking-proof switch of design, comprise circuit board and conducting resinl, described circuit board is provided with inner ring, centre circle around inner ring and the outer ring around centre circle, wherein, described centre circle to be separated and paired pad forms by multiple, and described pad forms one group of signaling switch between two, described conducting resinl comprises the inner conducting layer be pressed on described inner ring, the outer conducting layer being pressed on the middle conductive layer on described centre circle and being pressed on described outer ring, described middle conductive layer is divided into multiple, and one_to_one corresponding is pressed on each group of signaling switch respectively.
Described inner ring is square.
Described inner ring and outer ring ground connection.
Described conducting resinl comprises one and is connected to elastic arm between middle conductive layer and outer conducting layer, and described middle conductive layer is located at the top of described outer conducting layer, centre circle described in described middle conductive layer elastic compression.
Described centre circle is divided into 8 pads, and described middle conductive layer is divided into 4.
Described adjacent pad forms one group of signaling switch.
Present invention also offers a kind of financial machine and tool, described financial machine and tool has above-mentioned breaking-proof switch.
Described financial machine and tool also comprises a casing, and described casing pushes down described conducting resinl, and makes centre circle described in described middle conductive layer elastic compression towards pressing down described elastic arm.
Switching circuit, by the circuit structure of circuit board, is expanded to the four edges of contact circuit by the present invention, and is relatively independent leave certain distance, and this is equivalent to put into multiple breaking-proof switch in original size, and conducting resinl also becomes pushes down pad with elongate strip.In little hole, inject glue, its perviousness is limited, for carrying out glue injection attacks, must bore many hole identical with signaling switch, and in the process of boring, can not shake too large, cause other switch triggering.And less to the dimensional requirement in hole, to prevent brill from opening conducting resinl, cause open circuit.In inner ring and the outer ring of breaking-proof switch, all there is ground pad, prevent short circuit from attacking.
Accompanying drawing explanation
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail, wherein:
Fig. 1 is the structural representation of circuit board of the present invention;
Fig. 2 is the structural representation of conducting resinl of the present invention;
Fig. 3 is the structural representation before breaking-proof switch of the present invention closes;
Fig. 4 is that breaking-proof switch of the present invention is assemblied in the structural representation after financial machine and tool closes;
Fig. 5 is the structural representation of prior art circuits plate;
Fig. 6 is the structural representation of prior art conducting resinl.
Embodiment
Refer to Fig. 1 to Fig. 4.Breaking-proof switch of the present invention comprises circuit board 1 and conducting resinl 2.Wherein:
Circuit board 1 is provided with inner ring 11, the centre circle 12 around inner ring and the outer ring 13 around centre circle.Inner ring 11, centre circle 12 and outer ring 13 are the pad of conduction.
In this specific embodiment, inner ring 11 is in solid square.
Centre circle 12 to be separated and paired pad 120 forms by multiple, and described pad forms one group of signaling switch between two.In this specific embodiment, centre circle 12 is divided into 8 pads, and adjacent pad forms one group of signaling switch, forms four groups of signaling switches altogether: signaling switch 121, signaling switch 122, signaling switch 123 and signaling switch 124.
Outer ring 13 is mainly used in against short-circuit and attacks.Inner ring 11 and outer ring 13 ground connection.
Conducting resinl 2 comprises inner conducting layer 21, middle conductive layer 22 and outer conducting layer 23.Wherein, inner conducting layer 21, middle conductive layer 22 and outer conducting layer 23 extremely distribute outward in having successively.Inner conducting layer 21 is pressed on described inner ring, and middle conductive layer 22 is pressed on described centre circle, and outer conducting layer 23 is pressed on described outer ring.
Middle conductive layer 22 is divided into multiple, and one_to_one corresponding is pressed on each group of signaling switch respectively, thus closed each group of signaling switch.In this specific embodiment, middle conductive layer is divided into 4, pushes down signaling switch 121, signaling switch 122, signaling switch 123 and signaling switch 124 respectively.
Conducting resinl 2 also comprises one and is connected to elastic arm 24 between middle conductive layer and outer conducting layer, and described middle conductive layer is located at the top of described outer conducting layer.When being assemblied on financial machine and tool, casing 3 pushes down described conducting resinl, makes centre circle described in described middle conductive layer elastic compression towards pressing down described elastic arm.After removing casing, elastic arm 24 just can directly be upspring, and in drive, conductive layer is upspring, and plays the effect of open circuit immediately, prevents from attacking.
Switching circuit, by the circuit structure of circuit board, is expanded to the four edges of contact circuit by the present invention, and is relatively independent leave certain distance, and this is equivalent to put into multiple breaking-proof switch in original size, and conducting resinl also becomes pushes down pad with elongate strip.In little hole, inject glue, its perviousness is limited, for carrying out glue injection attacks, must bore many hole identical with signaling switch, and in the process of boring, can not shake too large, cause other switch triggering.And less to the dimensional requirement in hole, to prevent brill from opening conducting resinl, cause open circuit.In inner ring and the outer ring of breaking-proof switch, all there is ground pad, prevent short circuit from attacking.
The present invention, on the basis that former breaking-proof switch designs, have adjusted the method for designing of breaking-proof switch, further enhancing the security of breaking-proof switch.The present invention can be used for the financial industry that bank, security etc. need to be encrypted data, for the protection of the sensitive information such as account, the amount of money, password of client.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a breaking-proof switch, comprise circuit board and conducting resinl, it is characterized in that: described circuit board is provided with inner ring, the centre circle around inner ring and the outer ring around centre circle, wherein, described centre circle to be separated and paired pad forms by multiple, and described pad forms one group of signaling switch between two, the outer conducting layer that described conducting resinl comprises the inner conducting layer be pressed on described inner ring, is pressed on the middle conductive layer on described centre circle and is pressed on described outer ring, described middle conductive layer is divided into multiple, and one_to_one corresponding is pressed on each group of signaling switch respectively; Described inner ring and outer ring ground connection;
Described conducting resinl comprises one and is connected to elastic arm between middle conductive layer and outer conducting layer, and described middle conductive layer is located at the top of described outer conducting layer, centre circle described in described middle conductive layer elastic compression.
2. breaking-proof switch according to claim 1, is characterized in that: described inner ring is square.
3. breaking-proof switch according to claim 1, is characterized in that: described centre circle is divided into 8 pads, and described middle conductive layer is divided into 4.
4. breaking-proof switch according to claim 1, is characterized in that:
two adjacent pads form described one group of signaling switch.
5. a financial machine and tool, is characterized in that: described financial machine and tool has the breaking-proof switch described in any one of Claims 1-4.
6. financial machine and tool according to claim 5, is characterized in that: described financial machine and tool also comprises a casing, and described casing pushes down described conducting resinl, and makes centre circle described in described middle conductive layer elastic compression towards pressing down described elastic arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210283590.4A CN102819915B (en) | 2012-08-10 | 2012-08-10 | Tamper switch and financial machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210283590.4A CN102819915B (en) | 2012-08-10 | 2012-08-10 | Tamper switch and financial machine |
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| Publication Number | Publication Date |
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| CN102819915A CN102819915A (en) | 2012-12-12 |
| CN102819915B true CN102819915B (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210283590.4A Active CN102819915B (en) | 2012-08-10 | 2012-08-10 | Tamper switch and financial machine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104185364A (en) * | 2014-09-01 | 2014-12-03 | 福建联迪商用设备有限公司 | Disassembly-prevention connecting structure for screw and bonding pad and disassembly-prevention method |
| CN106470030B (en) * | 2015-08-20 | 2019-06-25 | 天地融科技股份有限公司 | A kind of electronic equipment and control method |
| CN105913585A (en) * | 2016-04-05 | 2016-08-31 | 无锡矽鼎科技有限公司 | Circuit device and electronic device comprising the same |
| CN105844818A (en) * | 2016-04-05 | 2016-08-10 | 无锡矽鼎科技有限公司 | Circuit device and electronic equipment containing circuit device |
| CN106097606B (en) * | 2016-06-29 | 2018-05-04 | 福建联迪商用设备有限公司 | Safe Anti-dismounting structure and its application method |
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| US8238095B2 (en) * | 2009-08-31 | 2012-08-07 | Ncr Corporation | Secure circuit board assembly |
| US8358218B2 (en) * | 2010-03-02 | 2013-01-22 | Verifone, Inc. | Point of sale terminal having enhanced security |
| US8513548B2 (en) * | 2010-07-21 | 2013-08-20 | Maxim Integrated Products, Inc. | Keypad having tamper-resistant keys |
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| US7270275B1 (en) * | 2004-09-02 | 2007-09-18 | Ncr Corporation | Secured pin entry device |
| CN101454784A (en) * | 2006-06-02 | 2009-06-10 | 萨基姆玛尼特公司 | Device to shield against interference from electrical appliances |
| CN101308739A (en) * | 2007-05-16 | 2008-11-19 | 深圳市证通电子股份有限公司 | Destruct circuit trigger detection method and switch construction thereof |
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| CN102819915A (en) | 2012-12-12 |
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