CN107358130B - Tamper-resistant system and tamper-resistant circuit therefor - Google Patents
Tamper-resistant system and tamper-resistant circuit therefor Download PDFInfo
- Publication number
- CN107358130B CN107358130B CN201610309216.5A CN201610309216A CN107358130B CN 107358130 B CN107358130 B CN 107358130B CN 201610309216 A CN201610309216 A CN 201610309216A CN 107358130 B CN107358130 B CN 107358130B
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- Prior art keywords
- tamper
- control unit
- electronic device
- shell
- detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/86—Secure or tamper-resistant housings
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2143—Clearing memory, e.g. to prevent the data from being stolen
Abstract
A tamper-proof system comprises a shell, a plurality of electronic devices arranged in the shell and a tamper-proof circuit, wherein the tamper-proof circuit comprises a control unit and a plurality of detection loop units, the control unit is arranged in the shell to store confidential data and generate a plurality of groups of different detection signals, each detection loop unit is provided with an input end electrically connected with the control unit to receive corresponding one of the detection signals, an output end electrically connected with the control unit, a plurality of anti-disassembly components dispersedly arranged between each electronic device and the shell, and a plurality of leads which are connected in series between the input end, at least one anti-disassembly component between each electronic device and the shell and the output end to form a closed loop, and when at least one of the plurality of detection loop units is in an open circuit state, the control unit clears the confidential data.
Description
Technical Field
The present invention relates to a circuit, and more particularly, to a tamper-proof system and a tamper-proof circuit thereof.
Background
Generally, electronic devices, such as card readers and cash dispensers, storing confidential files such as personal data and passwords are provided with tamper-resistant circuits to prevent hackers from easily stealing the confidential files, but most of the conventional tamper-resistant circuits are simple in design and concentrated on a certain block of the electronic device, so that hackers can easily crack the tamper-resistant circuits to steal the confidential files.
Disclosure of Invention
Accordingly, a first object of the present invention is to provide a tamper-proof system that is not easily broken and distributed densely.
Therefore, the tamper-proof system of the present invention comprises a housing, a plurality of electronic devices, and a tamper-proof circuit.
The plurality of electronic devices are arranged in the shell.
The anti-tamper circuit includes a control unit and a plurality of detection loop units.
The control unit is arranged in the shell to store secret data and generate a plurality of groups of different detection signals.
Each detection loop unit has an input end, an output end, a plurality of anti-disassembly components, and a plurality of wires.
The input end is electrically connected with the control unit to receive the corresponding one of the detection signals.
The output end is electrically connected with the control unit.
The anti-dismantling assemblies are dispersedly arranged between each electronic device and the shell.
The plurality of wires are connected in series among the input end, at least one anti-disassembly component between each electronic device and the shell and the output end to form a closed loop.
Preferably, the housing has an inner wall, and each tamper assembly includes a housing tamper point, a device tamper point, and a conductive adhesive. The shell anti-disassembly point is arranged on the inner wall of the shell, the device anti-disassembly point and the shell anti-disassembly point are correspondingly arranged on the electronic device, and the conductive adhesive is connected between the shell anti-disassembly point and the device anti-disassembly point.
Preferably, when the determining unit determines that at least one of the detecting loop units exhibits an open circuit state, the control unit clears the confidential data.
Preferably, the detection loop unit in the open state cannot transmit the corresponding detection signal back to the control unit.
Preferably, one of the wires is electrically connected between one of the anti-tamper assemblies and the input terminal, another one of the wires is electrically connected between another one of the anti-tamper assemblies and the output terminal, and the rest of the wires are respectively electrically connected between the anti-tamper assemblies.
Preferably, the control unit has a storage for storing the confidential data.
Therefore, a second objective of the present invention is to provide a tamper-proof circuit that cannot be easily broken and is distributed densely in an electronic system.
Therefore, the anti-tamper circuit is arranged in a shell and is suitable for a plurality of electronic devices arranged in the shell, and the anti-tamper circuit comprises a control unit and a plurality of detection loop units.
The control unit is arranged in the shell to store secret data and generate a plurality of groups of different detection signals.
Each detection loop unit has an input end, an output end, a plurality of anti-disassembly components, and a plurality of wires.
The input end is electrically connected with the control unit to receive the corresponding one of the detection signals.
The output end is electrically connected with the control unit.
The anti-dismantling assemblies are dispersedly arranged between each electronic device and the shell.
The plurality of wires are connected in series among the input end, at least one anti-disassembly component between each electronic device and the shell and the output end to form a closed loop.
Preferably, the housing has an inner wall, and each tamper assembly includes a housing tamper point, a device tamper point, and a conductive adhesive. The shell anti-disassembly point is arranged on the inner wall of the shell, the device anti-disassembly point and the shell anti-disassembly point are correspondingly arranged on the electronic device, and the conductive adhesive is connected between the shell anti-disassembly point and the device anti-disassembly point.
Preferably, when the control unit determines that at least one of the plurality of detection loop units exhibits an open circuit state, the control unit clears the confidential data.
Preferably, the detection loop unit in the open state cannot transmit the corresponding detection signal back to the control unit.
Compared with the prior art, the anti-tampering system and the anti-tampering circuit thereof are dispersed and densely distributed, have high safety performance and cannot be easily cracked.
[ description of the drawings ]
FIG. 1 is a cross-sectional view illustrating one embodiment of the tamper-resistant system of the present invention; and
fig. 2 is a partial cutaway view illustrating this embodiment of the tamper-resistant system of the present invention.
[ detailed description ] embodiments
Before the present invention is described in detail, it should be noted that in the following description, like elements are represented by like reference numerals.
Referring to fig. 1, an embodiment of the tamper-resistant system of the present invention includes a housing 1, a plurality of electronic devices 21-23, and a tamper-resistant circuit 3.
The housing 1 has an inner wall 11.
The plurality of electronic devices 21 to 23 are disposed in the housing 1, and include, for example, a control circuit board of a card reader, a control circuit board of a keyboard, and a control circuit board of a touch screen, but not limited thereto, and may be changed according to actual application requirements.
The tamper-proof circuit 3 includes a control unit 31 and a plurality of detection loop units 32-34, for convenience of illustration, three detection loop units 32-34 are taken as an example in the embodiment.
The control unit 31 is disposed in the housing 1 and generates a plurality of different detection signals S1-S3, and the control unit 31 has a storage 311 for storing a secret data, wherein the storage 311 can be a memory, and the secret data includes, for example, a key, a plurality of credit card numbers, authentication data or personal data.
The three detection loop units 32-34 respectively have an input 321, an output 322, three anti-detachment components 323-325, and four wires 326-329, the input 321 and the output 322 of each detection loop unit 32/33/34 are electrically connected to the control unit 31, the three anti-detachment components 323-325 are disposed between each electronic device 21/22/23 and the housing 1, one 326 of the four wires is electrically connected between one 323 of the three anti-detachment components and the input 321, the other 329 of the four wires is electrically connected between the other 325 of the three anti-detachment components and the output 322, the remainder 327 and 328 of the four wires are electrically connected between the three anti-detachment components 323-325, so that the four wires 326-329 are connected in series to at least one anti-detachment component 323/324/325 between the input 321, each electronic device 21/22/23, and the housing 1 And the output end 322 to form a closed loop.
It should be noted that the total number of the tamper-proof elements 323-325 of each detection loop unit 32/33/34 is equal to the total number of the wires 326-329 minus one (for example, the total number of the wires 326-329 of each detection loop unit 32/33/34 is 4 in the embodiment, the total number of the tamper-proof elements 323-325 is 3).
Referring to fig. 2, each anti-tamper assembly 323/324/325 includes a case anti-tamper point 33, a device anti-tamper point 34, and a conductive adhesive 35, the case anti-tamper point 33 is disposed on the inner wall 11 of the case 1 and connected to the plurality of wires 326-329, the device anti-tamper point 34 and the case anti-tamper point 33 are correspondingly disposed on the electronic devices 21-23, the conductive adhesive 35 is connected between the case anti-tamper point 33 and the device anti-tamper point 34 and is made of a conductive material such as a conductive paste or a conductive adhesive, and the case anti-tamper point 33 and the device anti-tamper point 34 are each a switch and are controlled to be switched between conducting and non-conducting.
It should be noted that the plurality of wires 326 to 329 of the tamper-proof system of the present invention can not only connect the plurality of casing anti-detachment points 33 as described above, but also connect the plurality of wires 326 to 329 above the plurality of device anti-detachment points 33 according to the actual design requirement.
To further explain the operation of the tamper-proof system of the present invention, under normal conditions, each detection loop unit 32/33/34 receives the corresponding detection signal S1/S2/S3 through the input end 321, so that the corresponding detection signal S1/S2/S3 is output to the control unit 31 through the four wires 326-329, the three tamper-proof components 323-325 in a conducting state, and the output end 322, that is, when the tamper-proof system has not been damaged by a hacker, the control unit 31 can receive the three detection signals S1-S3 output by the three detection loop units 32-34 in a closed loop; when the hacker disassembles the housing 1 near one 21 of the electronic devices, the housing anti-tamper points 33 and the device anti-tamper points 34 of the anti-tamper assemblies 323 are separated (i.e. the conductive adhesive 35 cannot be used to electrically connect the housing anti-tamper points 33 and the device anti-tamper points) so that the housing anti-tamper points 33 and the device anti-tamper points 34 are switched to be non-conductive, at this time, the control unit 31 determines that the detection circuit units 32-34 are in the open circuit state and cannot transmit the three sets of detection signals S1-S3 back to the control unit 31, and the control unit 31 clears the confidential data stored in the storage 311 to prevent the hacker from stealing the confidential data and using the confidential data.
That is, each of the electronic devices 21-23 is respectively provided with the anti-tamper assemblies 323-325, so that each of the detection circuit units 32-34 is disposed between each of the electronic devices 21-23 and the housing 1, and therefore, when the hacker disassembles the housing 1 near one of the electronic devices 21, the anti-tamper assemblies 323 on the detection circuit units 32-34 are simultaneously triggered, so that the hacker needs to conduct the detection circuit units 32-34 in a very short time, and the hacking difficulty of the hacker stealing the confidential data in the control unit 31 is increased.
In summary, the tamper-proof system of the present invention is provided to the electronic devices 21-23 through the wires 326-329 of the detection circuit units 32-34 and the tamper-proof components 323-325, the wires 326-329 and the tamper-proof components 323-325 of each detection loop unit 32/33/34 together form the closed loop connected in series to the control unit 31, so that when any one of the detection loop units 32-34 is damaged by the hacker and the open circuit state is presented, the control unit 31 clears the confidential data stored in the storage 311 to maintain the security of the confidential data, and even each of the electronic devices 21-23 of the tamper-proof system of the present invention is provided with the plurality of detection loop units 32-34, so as to increase the difficulty of hacking for hacking the confidential data in the control unit 31, thereby achieving the purpose of the present invention.
The detailed description and examples of the present invention are given above with reference to the accompanying drawings, but the scope of the present invention is not limited thereto, and the equivalent modifications and variations within the scope of the claims of the present invention should be considered as falling within the scope of the present invention.
Claims (10)
1. A tamper-resistant system, comprising:
a housing;
a plurality of electronic device circuit boards arranged in the shell; and
a tamper-resistant circuit comprising:
a control unit disposed in the housing for storing secret data and generating multiple sets of different detection signals, an
A plurality of detection loop units, each detection loop unit having:
an input terminal electrically connected to the control unit for receiving the corresponding one of the detection signals,
an output end electrically connected with the control unit,
a plurality of anti-disassembly assemblies dispersedly arranged between each electronic device circuit board and the shell, an
A plurality of wires connected in series between the input terminal, at least one anti-tamper assembly between each electronic device circuit board and the housing, and the output terminal to form a closed loop,
each electronic device circuit board comprises a plurality of anti-dismantling components,
the same detection circuit unit is connected in series and passes through a plurality of electronic device circuit boards provided with a plurality of anti-dismounting components,
a plurality of detection loop units are arranged on the same electronic device circuit board and are respectively connected in series with different anti-dismounting components on the electronic device circuit board.
2. The tamper-resistant system according to claim 1, wherein: the housing has an inner wall, and each tamper assembly includes:
a shell anti-disassembly point arranged on the inner wall of the shell,
a device anti-detachment point disposed on the electronic device circuit board corresponding to the housing anti-detachment point, an
A conductive adhesive connected between the tamper point of the housing and the tamper point of the device.
3. The tamper-resistant system according to claim 1, wherein: when the control unit determines that at least one of the plurality of detection loop units is in an open circuit state, the control unit clears the confidential data.
4. The tamper-resistant system according to claim 3, wherein: the detection loop unit in the open state cannot transmit the corresponding detection signal back to the control unit.
5. The tamper-resistant system according to claim 1, wherein: one of the wires is electrically connected between one of the anti-tamper assemblies and the input end, the other of the wires is electrically connected between the other of the anti-tamper assemblies and the output end, and the rest of the wires are respectively electrically connected between the anti-tamper assemblies.
6. The tamper-resistant system according to claim 1, wherein: the control unit has a storage for storing the confidential data.
7. The utility model provides an anti-tamper circuit, sets up in a casing, and is applicable to a plurality of electron device circuit boards that set up in this casing, its characterized in that: the tamper-resistant circuit includes:
a control unit arranged in the shell to store secret data and generate a plurality of groups of different detection signals; and
a plurality of detection loop units, each detection loop unit having
An input terminal electrically connected to the control unit for receiving the corresponding one of the detection signals,
an output end electrically connected with the control unit,
a plurality of anti-disassembly assemblies dispersedly arranged between each electronic device circuit board and the shell, an
A plurality of wires connected in series between the input terminal, at least one anti-tamper assembly between each electronic device circuit board and the housing, and the output terminal to form a closed loop,
each electronic device circuit board comprises a plurality of anti-dismantling components,
the same detection circuit unit is connected in series and passes through a plurality of electronic device circuit boards provided with a plurality of anti-dismounting components,
a plurality of detection loop units are arranged on the same electronic device circuit board and are respectively connected in series with different anti-dismounting components on the electronic device circuit board.
8. The tamper-resistant circuit of claim 7, wherein: the housing has an inner wall, wherein each tamper assembly comprises:
a shell anti-disassembly point arranged on the inner wall of the shell,
a device anti-detachment point disposed on the electronic device circuit board corresponding to the housing anti-detachment point, an
A conductive adhesive connected between the tamper point of the housing and the tamper point of the device.
9. The tamper-resistant circuit of claim 7, wherein: when the control unit determines that at least one of the plurality of detection loop units is in an open circuit state, the control unit clears the confidential data.
10. The tamper-resistant circuit of claim 9, wherein: the detection loop unit in the open state cannot transmit the corresponding detection signal back to the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309216.5A CN107358130B (en) | 2016-05-10 | 2016-05-10 | Tamper-resistant system and tamper-resistant circuit therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309216.5A CN107358130B (en) | 2016-05-10 | 2016-05-10 | Tamper-resistant system and tamper-resistant circuit therefor |
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| Publication Number | Publication Date |
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| CN107358130A CN107358130A (en) | 2017-11-17 |
| CN107358130B true CN107358130B (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610309216.5A Active CN107358130B (en) | 2016-05-10 | 2016-05-10 | Tamper-resistant system and tamper-resistant circuit therefor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108280946B (en) * | 2018-04-09 | 2024-01-05 | 上海商米科技集团股份有限公司 | Electronic equipment anti-disassembling device and electronic equipment |
| CN112996219B (en) * | 2019-12-13 | 2022-05-17 | 苏州佳世达电通有限公司 | Electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101159072A (en) * | 2007-10-22 | 2008-04-09 | 谢建全 | Device for preventing financial terminal susceptivity data missing |
| CN102479315A (en) * | 2010-11-24 | 2012-05-30 | 连宇股份有限公司 | Electronic device with data protection function |
| CN103975340A (en) * | 2011-12-16 | 2014-08-06 | 日本电气英富醍株式会社 | Information processing device |
| TW201518992A (en) * | 2013-11-15 | 2015-05-16 | Chunghwa Telecom Co Ltd | Security protective device of confidential data |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202533956U (en) * | 2011-11-30 | 2012-11-14 | 连宇股份有限公司 | Swiping card device with multiple protection mechanism |
| CN204009913U (en) * | 2014-08-12 | 2014-12-10 | 飞天诚信科技股份有限公司 | The equipment of anti-physical attacks |
| CN204129924U (en) * | 2014-09-25 | 2015-01-28 | 北京浪奇捷联科技开发有限公司 | A kind of antiwithdrawal device |
-
2016
- 2016-05-10 CN CN201610309216.5A patent/CN107358130B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101159072A (en) * | 2007-10-22 | 2008-04-09 | 谢建全 | Device for preventing financial terminal susceptivity data missing |
| CN102479315A (en) * | 2010-11-24 | 2012-05-30 | 连宇股份有限公司 | Electronic device with data protection function |
| CN103975340A (en) * | 2011-12-16 | 2014-08-06 | 日本电气英富醍株式会社 | Information processing device |
| TW201518992A (en) * | 2013-11-15 | 2015-05-16 | Chunghwa Telecom Co Ltd | Security protective device of confidential data |
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| CN107358130A (en) | 2017-11-17 |
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