CN101128094B - Secure protection device - Google Patents
Secure protection device Download PDFInfo
- Publication number
- CN101128094B CN101128094B CN 200710077206 CN200710077206A CN101128094B CN 101128094 B CN101128094 B CN 101128094B CN 200710077206 CN200710077206 CN 200710077206 CN 200710077206 A CN200710077206 A CN 200710077206A CN 101128094 B CN101128094 B CN 101128094B
- Authority
- CN
- China
- Prior art keywords
- circuit
- baffle
- protection
- lath
- safety guard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G06F21/86—Secure or tamper-resistant housings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0275—Security details, e.g. tampering prevention or detection
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/141—One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10151—Sensor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
- H05K2201/2018—Presence of a frame in a printed circuit or printed circuit assembly
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Storage Device Security (AREA)
Abstract
The invention provides a safety protection device, comprising a protection board and a protection wall, wherein the protection wall and the protection board are combined together to form a cover with an opening at only one side so as to shield a protection area of a protected circuit board. The invention is characterized in that the protection wall is surrounded by at least two combined independent circuit lathes, the circuit lathes are provided with through holes, and conductive zebra strips are mounted in the through holes and physically contacted with the protection board, the protection board is electrically connected to the protected circuit board by means of the conductive zebra strips, a fixing hole is arranged on each circuit lath, and the protection board is provided with the fixing hole corresponding to the fixing hole of the circuit lath, the protection board is located by a bolt through the fixing holes of the protection board and the circuit lath. The invention surrounds the protection area of the protected circuit board by the protection board and the protection wall that is surrounded by at least two combined independent circuit lathes, thus providing the protection for the components in the protection area and preventing the components from physical attacks.
Description
Technical field
The invention belongs to electronic circuit protection field, relate in particular to the safety guard that the element on a kind of protective circuit plate is immune against attacks.
Background technology
Now; the data message of some hypersensitivities of storing in the electronic circuit; usurped by attack under the situation of the permission without permission of being everlasting as bank information, password, registration code etc.; therefore; these Data Protection also are subjected to more and more higher attention; various forms of protective devices and method constantly occur; wherein; a kind of comparatively effectively prevent sensitive data under the situation of permission without permission by the method for being attacked, be to prevent that by the software that storage in memory storage is used for encrypting, decipher responsive program or data sensitive data information is stolen.But this mode depends on encryption, the decruption key that is stored in the memory storage, and encrypt, decruption key also needs by physics and protection electronics, just can be not under attack easily.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of safety guard, is intended to solve the problem that the sensitive data information of electronic circuit component is stolen by physical means.
The embodiment of the invention is to realize like this; a kind of safety guard; comprise baffle and protection wall; described protection wall and baffle are combined; the common lid that constitutes one opening; cover the protection zone of protected circuit board; it is characterized in that; described protection wall is surrounded by at least two independently circuit laths that combine; offer through hole on the described circuit lath; conduction zebra bar is housed in described through hole; described conduction zebra bar contacts with baffle physics, and described baffle is electrically connected with protected circuit board by means of described conduction zebra bar, and each circuit lath is provided with fixing hole; baffle is provided with the fixing hole corresponding with the fixing hole of circuit lath, and described baffle is by means of the screw location of passing fixing hole on baffle and the circuit lath.
Wherein, the two ends of each circuit lath are provided with a tenon and a groove respectively, and the groove joggle of each tenon and adjacent circuit lath combines two adjacent circuit laths.
Wherein, described baffle has at least one wiring layer, and wiring layer have two row cultures crawl the coiling metal routing, be parallel to each other between the two strip metal cablings.
Wherein, described trace width is with to walk distance between centers of tracks identical.
Wherein, direction of routing on each wiring layer of described baffle and the direction of routing on the adjacent wire layer intersect, and the direction of routing on the two adjacent wiring layers of same wiring layer is parallel to each other, staggers.
The present invention by baffle and by at least two independently the protection wall that surrounds of circuit lath constitute an only lid of an opening jointly, cover the protection zone of protected circuit board, provide protection to the element in this zone, avoid it to be subjected to physical attacks.
Description of drawings
Fig. 1 is the safety guard that provides of the embodiment of the invention and the decomposing schematic representation of protected main circuit board;
Fig. 2 is the decomposition enlarged diagram of the protection wall of the safety guard that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The safety guard of the embodiment of the invention is surrounded the zone that protected circuit board is provided with critical elements by baffle and the protection wall with wiring; in case when having the behavior of attempting to destroy these elements or steal sensitive data information on these elements to take place; must at first break through the protection wall of safety guard or baffle and not cause that its upward wiring disconnects or short circuit; otherwise; interlock circuit triggers; sensitive data information on destruction or the erased element prevents that it is detected or steals.
Described protected circuit board 10 can be that mainboard or other devices of point of sale device such as POS (point of sales) machine gone up the circuit board that uses.Please referring to Fig. 1 and Fig. 2, the printed circuit board (PCB) that described protected circuit board 10 can be the tool multiple wiring layer, the protection zone on it is represented with label 14.Be provided with as elements such as CPU, flash memory, static memory, dynamic random access memory, security monitor chip, integrated circuit (IC) chip, bus, safety detection cablings in the protection zone 14 of described protected circuit board 10.Protected circuit board all can be installed safety guard in both sides about in the of 10, prevents that the critical elements of protected circuit board 10 is under attack.Certainly; also can only install safety guard as required in a side of protected circuit board 10; opposite side adopts and arrange metal routing on protected circuit board 10 simultaneously; these metal routings can disconnect or short circuit when being subjected to physical attacks; trigger interlock circuit and make its destruction or wipe the sensitive data information in the critical elements on the protected circuit board 10, prevent that it is detected or steals.
The shape of described safety guard that is installed on protected circuit board 10 upper and lower sides is identical with structure, and its size can be adjusted according to actual needs.Be that example is elaborated only below with one of them safety guard.Described safety guard comprises protection wall 20, conduction zebra bar 30 and baffle 40.Described protection wall 20 and baffle 40 are combined, and constitute an only lid of an opening jointly, cover the protection zone 14 of protected circuit board 10.
As shown in Figure 2, protection wall 20 comprises two independently circuit laths 22, is not limited to have only two circuit laths 2 during practical application.The two ends of each circuit lath 22 are provided with a tenon 222 and a groove 224 respectively; groove 224 joggles of each tenon 222 and adjacent circuit lath 22; two adjacent circuit laths are combined, and formation can be located in the protection wall 20 outside the protected area after all circuit laths 22 combined.Each circuit lath 22 is provided with fixing hole 226 and strip through-hole 228.Circuit lath 22 is electrically connected with protected circuit board 10 by tin on the pad.When the cabling on the circuit lath 22 disconnects or during short circuit, can provide an index signal, interlock circuit is triggered, destroy or wipe the sensitive data information in the critical elements on the circuit board 10 of protection, prevent that these data messages are stolen.Described conduction zebra bar 30 is loaded in the through hole 228 of circuit lath 22.
The fixing hole 226 of corresponding circuits lath 22 is provided with fixing hole 426 on the described baffle 40, and this safety guard is fixed on the protected circuit board 10 by means of the screw that passes fixing hole 226,426 (figure does not show).Described baffle 40 shapes are identical with the protection zone, are covered on the protection wall 20 and cover protection zone 14.Described baffle 40 is for having the circuit board of many wiring layers and a ground plane, and wherein the signal lead between wiring layer connects by via hole.Baffle 40 contacts with conduction zebra bar 30 physics, and the cabling on the baffle 40 is electrically connected on the protected circuit board 10 by means of conduction zebra bar 30.At this, conduction zebra bar 30 not only makes protected circuit board 10 be electrically connected with baffle 40 as connector, also responds to the pressure condition of safety guard as the pressure sensitive device.In case there is the people to open baffle 40; conduction zebra bar 30 will disconnect cabling on the baffle 40 and protected circuit board 10; relevant circuit just can trigger, and destroys or wipe the sensitive data information in the critical elements on the protected circuit board 10, prevents that it is detected or steals.Protection wall 20, conduction zebra bar 30 and baffle 40 form an over cap, and the critical elements on the protected circuit board 10 is surrounded.If the cabling on protection wall 20 or the baffle 40 disconnects or short circuit, all can provide an index signal, make relevant circuit triggers, destroy or wipe the sensitive data information in the critical elements on the circuit board 10 of protection.Therefore, not only can not monitor the ruuning situation of main system from the safety guard outside, can not steal sensitive data information on the critical elements by the mode of physical separation safety guard.
In the present embodiment, every wiring layer of baffle 40 is two cablings, and wherein a cabling connects high voltage, and another cabling connects low-voltage.Walk line parallel for two on each wiring layer, trace width and to walk distance between centers of tracks identical.Cabling connects by means of via hole between the wiring layer.Direction of routing on direction of routing on each wiring layer and the adjacent wire layer intersects, and the direction of routing on the two adjacent wiring layers of same wiring layer is parallel to each other, for example: the cabling of first wiring layer is a horizontal direction, the cabling of second wiring layer is the direction vertical with the direction of routing of first wiring layer so, the cabling of the 3rd wiring layer and first wiring layer are walked line parallel, also are horizontal direction.In addition; the line position of walking on two wiring layers adjacent with same wiring layer staggers mutually; the gap between the cabling of corresponding another wiring layer of the cabling of a wiring layer wherein; after each wiring layer is superimposed; the projection of baffle on the plane parallel with wiring layer do not have the space; just from the angle perpendicular to the baffle wiring layer, baffle does not have the slit on the whole.Like this, must each wiring layer be broken through, otherwise can not survey or steal sensitive data information on the important electronic component that protected plate builds from baffle.
In case when having the behavior of stealing sensitive data information on the electronic component to take place; the cabling of protection wall 20 or baffle 40 is disconnected or short circuit; and the disconnection of the cabling of protection wall 20 or baffle 40 or short circuit can trigger interlock circuit and make its destruction or wipe the sensitive data information in the critical elements on the protected circuit board 10, prevent that it is detected or steals.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. safety guard; comprise baffle and protection wall; described protection wall and baffle are combined; the common lid that constitutes one opening; cover the protection zone of protected circuit board; it is characterized in that; described protection wall is surrounded by at least two independently circuit laths that combine; offer through hole on the described circuit lath; conduction zebra bar is housed in described through hole; described conduction zebra bar contacts with baffle physics; described baffle is electrically connected with protected circuit board by means of described conduction zebra bar; each circuit lath is provided with fixing hole, and baffle is provided with the fixing hole corresponding with the fixing hole of circuit lath, and described baffle is by means of the screw location of passing fixing hole on baffle and the circuit lath.
2. safety guard as claimed in claim 1 is characterized in that, the two ends of each circuit lath are provided with a tenon and a groove respectively, and the groove joggle of each tenon and adjacent circuit lath combines two adjacent circuit laths.
3. safety guard as claimed in claim 1 is characterized in that described baffle has at least one wiring layer, and wiring layer have two row cultures crawl the coiling metal routing, be parallel to each other between the two strip metal cablings.
4. safety guard as claimed in claim 3 is characterized in that, described trace width is with to walk distance between centers of tracks identical.
5. safety guard as claimed in claim 1 is characterized in that, direction of routing on each wiring layer of described baffle and the direction of routing on the adjacent wire layer intersect, and the direction of routing on the two adjacent wiring layers of same wiring layer is parallel to each other, staggers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710077206 CN101128094B (en) | 2007-09-21 | 2007-09-21 | Secure protection device |
| PCT/CN2007/002903 WO2009036610A1 (en) | 2007-09-21 | 2007-10-09 | Safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710077206 CN101128094B (en) | 2007-09-21 | 2007-09-21 | Secure protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101128094A CN101128094A (en) | 2008-02-20 |
| CN101128094B true CN101128094B (en) | 2011-05-11 |
Family
ID=39095961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710077206 Active CN101128094B (en) | 2007-09-21 | 2007-09-21 | Secure protection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101128094B (en) |
| WO (1) | WO2009036610A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105205417A (en) * | 2015-09-17 | 2015-12-30 | 福建新大陆支付技术有限公司 | Protection device and method for preventing data interception in electronic circuit |
| TWI574591B (en) * | 2012-07-27 | 2017-03-11 | 德昌電機（深圳）有限公司 | Safety protecting apparatus |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128094B (en) * | 2007-09-21 | 2011-05-11 | 百富计算机技术（深圳）有限公司 | Secure protection device |
| CN102819913B (en) * | 2012-07-19 | 2015-01-28 | 深圳市九思泰达技术有限公司 | Safety device of financial payment apparatus and financial payment apparatus |
| TWI567599B (en) * | 2013-09-27 | 2017-01-21 | 友達光電股份有限公司 | Panel device with electrostatic attack protection |
| CN105303725B (en) * | 2015-11-04 | 2018-03-30 | 上海慧银信息科技有限公司 | Physical security protection module and financial transaction terminal |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2502460Y (en) * | 2001-10-29 | 2002-07-24 | 大森开发科技股份有限公司 | Network exchanger structure |
| CN1477475A (en) * | 2002-08-23 | 2004-02-25 | 广达电脑股份有限公司 | Standard interface card for personal computer |
| US6853093B2 (en) * | 2002-12-20 | 2005-02-08 | Lipman Electronic Engineering Ltd. | Anti-tampering enclosure for electronic circuitry |
| CN2718647Y (en) * | 2004-06-11 | 2005-08-17 | 华为技术有限公司 | Arrangement for protecting information safety of host machina |
| CN101128094B (en) * | 2007-09-21 | 2011-05-11 | 百富计算机技术（深圳）有限公司 | Secure protection device |
-
2007
- 2007-09-21 CN CN 200710077206 patent/CN101128094B/en active Active
- 2007-10-09 WO PCT/CN2007/002903 patent/WO2009036610A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI574591B (en) * | 2012-07-27 | 2017-03-11 | 德昌電機（深圳）有限公司 | Safety protecting apparatus |
| CN105205417A (en) * | 2015-09-17 | 2015-12-30 | 福建新大陆支付技术有限公司 | Protection device and method for preventing data interception in electronic circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101128094A (en) | 2008-02-20 |
| WO2009036610A1 (en) | 2009-03-26 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |