CN203759797U - Magnetic head for security terminal and security terminal - Google Patents
Magnetic head for security terminal and security terminal Download PDFInfo
- Publication number
- CN203759797U CN203759797U CN201420167830.9U CN201420167830U CN203759797U CN 203759797 U CN203759797 U CN 203759797U CN 201420167830 U CN201420167830 U CN 201420167830U CN 203759797 U CN203759797 U CN 203759797U
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- magnetic head
- magnetic
- safe processor
- shell
- clathrum
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Abstract
The utility model discloses a magnetic head for a security terminal and the security terminal. The magnetic head for the security terminal comprises a circuit structure and a security processor electrically connected with the circuit structure; the magnetic head further comprises a shell, the circuit structure is mounted in the shell, the top of the shell is closed by a shell cover, a magnetic body is arranged on the inner surface of the shell cover, a magnetic field induction sensor electrically connected with the security processor is mounted in the shell, and the magnetic field induction sensor is used for detecting the change of the magnetic flux which passes through the outer surface thereof, converting the magnetic flux change into electric signals, and sending the electric signals to the security processor. The magnetic head for the security terminal is capable of reinforcing the physical protection measures for the security processor and enables the security processor security to be improved through improving the physical structure.
Description
Technical field
The utility model belongs to field of information security technology, specifically, relates to a kind of magnetic head and this security terminal that is applied to security terminal.
Background technology
Payment behavior is a basic act of people's daily life, and now widely used various debit cards and credit card are mainly stored user account information with magnetic medium, the magnetic card that card of this payment use is also commonly called as.Payment terminal is used for reading the information of magnetic card and processing this information to complete whole magnetic card payment process as a part for payment terminal; the transaction that security terminal is positioned at payment terminal foremost; participate in the mutual safety of protection card information directly; whether under attack and when certain safeguard measure of taking time under attack being detected for detect magnetic card at payment process; therefore, the security of security terminal is the necessary condition that ensures secure payment.
Magnetic head is generally integrated in security terminal as security terminal critical component, the Main Function of magnetic head is the accounts information reading in magnetic card, and the application processor that information is sent to payment terminal is completed to delivery operation, therefore, magnetic head is easy to become the main object of attack of stealing user profile.
The structure of existing conventional magnetic head as shown in Figure 1; comprise the superimposed pcb board of polylith 101; on pcb board 101, be furnished with line trigger signal; pcb board 101 belows are connected with safe processor, magnetic card inductive component 102 etc.; in Fig. 1; although can to a certain degree resist and the simple attack such as disassemble by pcb board is set; but; from one-piece construction; safe processor is not taked favourable physical protection measure (as the safeguard measure on safe processor peripheral structure), causes safe processor to be easily subject to attack physically.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of magnetic head and this security terminal that is applied to security terminal, with the physical protection measure of the processor that tightens security, the security that improves safe processor from physical arrangement.
In order to solve the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of magnetic head that is applied to security terminal, the safe processor that comprises circuit structure and be electrically connected with described circuit structure, described magnetic head also comprises shell, described circuit structure is placed in shell, and the top of shell is sealed by casing cover, the inside surface of described casing cover is provided with magnet, in described shell, be also provided with the magnetic field induction sensor being electrically connected with described safe processor, described magnetic field induction sensor is for detection of the variation through the magnetic flux of its outside surface, and the variation of described magnetic flux is converted to electric signal is sent to safe processor.
Further, described circuit structure is the enclosed construction that FPC circuit board forms, described FPC circuit board comprises element layer, at least one deck trigger pip clathrum and basic unit, described element layer is positioned at the inner side of described enclosed construction, at least described in one deck, on trigger pip clathrum, be furnished with the line trigger signal being electrically connected with safe processor, safe processor and magnetic field induction sensor are all arranged on the inside surface of described FPC circuit board.
Further, described enclosed construction is hexahedron structure or octahedral structure, the upper bottom surface of wherein said hexahedron structure or octahedral structure and bottom surface are all parallel to described casing cover, and described safe processor is arranged on the bottom surface of described hexahedron structure or octahedral structure, described magnetic field induction sensor setting is on the upper bottom surface of described hexahedron structure or octahedral structure.
Further, described trigger pip clathrum is two-layer or two-layer when above, is distributed in the direction of routing difference of the line trigger signal on adjacent two layers trigger pip clathrum.
Further, on every layer of trigger pip clathrum, be furnished with at least one road line trigger signal.
Further, between adjacent two line trigger signals, be furnished with ground signalling line.
Further, on described trigger pip clathrum, have blind hole, for the trigger pip that comes from safe processor is accessed to line trigger signal.
Further, described basic unit is ground plane, and/or, be provided with the layer of components and parts.
Further, in described shell, be perfused with dielectric material, for fixing described circuit structure and magnetic card inductive component.
Based on above-mentioned magnetic head, the utility model provides a kind of security terminal simultaneously, comprises magnetic head as previously described.
Compared with prior art, the utility model at least tool has the following advantages: magnetic head of the present utility model, by the core component such as safe processor, circuit structure of magnetic head is placed in shell, magnetic field induction sensor cooperating in magnet and shell on casing cover inside surface, whether the variation of the magnetic flux that safe processor can detect according to magnetic field induction sensor is judged casing cover and is destroyed.Further, can trigger protection measure in the time that casing cover is destroyed, the protective effect that the sensitive information of magnetic head is played, can strengthen the physical protection measure of safe processor, the security that improves safe processor from physical arrangement.
Read by reference to the accompanying drawings after the detailed description of the utility model embodiment, other features of the present utility model and advantage will become clearer.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the magnetic head structure schematic diagram of prior art;
Fig. 2 is a kind of example structure schematic diagram of the magnetic head that proposes of the utility model;
The detection principle schematic of magnetic field induction sensor in Fig. 3 the utility model security terminal;
Fig. 4 a is the utility model security terminal China and foreign countries cap closure state schematic diagram;
Fig. 4 b is the utility model security terminal China and foreign countries cap one view that is unlocked;
Fig. 4 c is the utility model security terminal China and foreign countries another view that are unlocked of cap;
Fig. 5 is circuit structure deployed condition schematic diagram in Fig. 2;
Fig. 6 is FPC circuit board assembling process structural representation in Fig. 5; Fig. 7 is the blast structural representation of FPC circuit board in Fig. 5;
Fig. 8 is the cross section view of trigger pip clathrum in Fig. 7;
Fig. 9 is a kind of example structure schematic diagram of security terminal that the utility model proposes.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment mono-
The utility model embodiment mono-provides a kind of magnetic head that is applied to security terminal, Fig. 2 is the structural representation of magnetic head in the present embodiment, the safe processor 202 that this magnetic head comprises circuit structure 201 and is electrically connected with circuit structure 201 as can be known from Fig. 2, the magnetic head of the present embodiment also comprises shell 203, circuit structure 201 is placed in shell 203, and the top of shell 203 is sealed by casing cover 204, the inside surface of casing cover 204 is provided with magnet 205, in shell 203, be also provided with the magnetic field induction sensor 206 being electrically connected with safe processor 202, magnetic field induction sensor 206 is for detection of the variation of the magnetic flux through its outside surface, and the variation of magnetic flux is converted to electric signal is sent to safe processor 202.
The magnetic head of the present embodiment adopts magnet 205 to coordinate magnetic field induction sensor 206 to work, whether attacked for detection of casing cover 204, its principle of work as shown in Figure 3, magnetic field induction sensor 206 is for detection of the magnetic flux through himself outside surface, because magnetic flux does not rely on the polarity of magnet 205, therefore, the setting angle (sensings at N/S the two poles of the earth) of magnetic head to magnet 205 do not have particular requirement, can reduce greatly the complicacy of producing assembling.Once magnet 205 changes with the relative position of magnetic field induction sensor 206, magnetic field induction sensor 206 magnetic field around also changes accordingly, therefore change through the magnetic flux of magnetic field induction sensor 206 outside surfaces, magnetic field induction sensor 206 is converted to electric signal by the variation of magnetic flux and is sent to safe processor 202.Shown in Fig. 4 a～Fig. 4 c, Fig. 4 a is the structural representation under casing cover 204 closed states, Fig. 4 b and Fig. 4 c have provided the be unlocked schematic diagram of situation of two kinds of casing covers 204, no matter above-mentioned any two kinds of attack condition, casing cover 204 changes with the relative position of shell 203, corresponding magnet 205 changes with the relative position of magnetic field induction sensor 206, all can cause changing through the magnetic flux of magnetic field induction sensor 206 outside surfaces, can judge that thus casing cover 204 is opened.Wherein, Fig. 4 a～4c shows on the relative position that magnetic field induction sensor 206 is positioned at magnet 205, in fact, magnetic field induction sensor 206 can be positioned at any position of shell, preferably, magnetic field induction sensor 206 can be positioned at any position on circuit structure 201 inside surfaces, will not enumerate at this.
Further, this magnetic head can also carry out Initiative Defense after casing cover 204 is opened.For example, once the electric signal that magnetic field induction sensor 206 sends over reaches the limit value of setting in safe processor 202, just produce skip signal, safe processor 202 carries out Initiative Defense according to this signal, the sensitive data (as magnetic card account information that secret key, the magnetic head of work read of communicating by letter between magnetic head and application processor etc.) of wiping storage inside, therefore these sensitive datas can not be illegally accessed.Beyond all doubt; the attack of casing cover 204 is not limited only to two kinds of forms shown in Fig. 4 b and Fig. 4 c; can also any other cause the destruction changing by the magnetic flux of magnetic field induction sensor 206 outside surfaces, the magnetic head of the present embodiment all can accomplish sensitive data effectively to protect.
As a preferred embodiment, the enclosed construction of circuit structure 201 for being formed by FPC circuit board, referring to Fig. 5, shown in Fig. 6, wherein, Fig. 5 is structural representation under FPC circuit board deployed condition, FPC circuit board is folded to form enclosed construction according to shown in Fig. 6, shown in Figure 7, this FPC circuit board can comprise element layer 301, at least one deck trigger pip clathrum 302 and basic unit 303, element layer 301 is positioned at the inner side (being positioned at and the immediate side of safe processor 202) of enclosed construction, at least on one deck trigger pip clathrum 302, be furnished with the line trigger signal 304 being electrically connected with safe processor 202, safe processor 202 and magnetic field induction sensor 206 are all arranged on the inside surface of FPC circuit board.At least the line trigger signal of one deck trigger pip clathrum 302 is introduced the self-destruction signal that comes from safe processor 202, in the time that line trigger signal 304 is subject to physical attacks (as be subject to physical detecting cause opening circuit), the corresponding Initiative Defense of carrying out of safe processor 202 moves, and wipes the sensitive data of storage inside.In the present embodiment, by being formed to enclosed construction and safe processor 202, FPC circuit board is placed in this enclosed construction; the FPC circuit board of sealing can be protected from all directions safe processor 202; even if casing cover 204 is by successful attack; safe processor 202 can obtain the further protection of the FPC circuit board of sealing; the line trigger signal 304 of arranging on FPC circuit board; can effectively resist possible physical attacks, therefore the anti-performance of stealing of head information further improves.
Surround the technique of enclosed construction in order to simplify this FPC circuit board, being convenient to batch production makes, this enclosed construction is preferably the hexahedron structure surrounding according to the wrap direction shown in Fig. 6, wherein, this hexahedron structure can upper bottom surface and bottom surface be all parallel to casing cover 204, and safe processor 202 is arranged on the bottom surface of hexahedron structure, magnetic field induction sensor 206 is arranged on the inwall of hexahedron structure, preferably be arranged on the upper bottom surface of hexahedron structure, can certainly be arranged on other faces.Certainly, this enclosed construction is not limited to given an example hexahedron structure, can also be such as being set to octahedral structure, in the time adopting octahedral structure, the upper bottom surface of this octahedral structure and bottom surface can equally all be parallel to casing cover 204, and described safe processor 202 is arranged on the bottom surface of this octahedral structure, magnetic field induction sensor 206 is arranged on the inwall of this octahedral structure, is preferably arranged on the upper bottom surface of octahedral structure.
As can be known from Fig. 2, magnetic card inductive component 207 is positioned at the bottom position of shell 203, when magnetic card is during near shell 203 bottom, reads the information in magnetic card, and be sent to safe processor 202 by 207 inductions of magnetic card inductive component.
As a preferred embodiment, because Steel material hardness is high and be difficult for disassembling and corroding, shell 203 preferably adopts Steel material, and adopts one time punching molded technique, can prevent gap easily by physical detecting, has increased the difficulty of being attacked.In addition, permanently effective for ensureing the magnetic force of magnet 205, prevent because magnet 205 occurs because the decay of self magnetic force causes the erroneous judgement event of safe processor 202, in the present embodiment, preferably adopt permanent magnet (as neodymium iron boron class alloy permanent magnet, or other types permanent magnet), because permanent magnet magnetic force is less from loss and decay, can ensure that very little volume remains again constant through the magnetic flux of magnetic field induction sensor outside surface simultaneously, therefore ensures that magnet 205 is always reliable and stable in the security terminal term of validity.
In order to facilitate FPC circuit board to be fixed in shell 203, in shell 203, be perfused with dielectric material, can fill the gap between circuit structure (as FPC circuit board) and shell 203 on the one hand, but also can be by fixing to circuit structure 201 and magnetic card inductive component 207 etc. more firm, wherein, this dielectric material can adopt the dark opaque dielectric materials such as epoxy resin, can effectively defend optical detection because dark color is opaque, for example adopt in the present embodiment black epoxy, can play the effect of the electronic devices and components in further protecting sheathing 203, casing cover 204 is soldered on shell 203 after note epoxy resin.
It should be noted that, the above-mentioned trigger pip clathrum of mentioning 302 when above, is distributed in the direction of routing difference of the line trigger signal 304 on adjacent two layers trigger pip clathrum 302 for two-layer or two-layer.Wherein, the direction of routing difference of line trigger signal 304 comprises (0 °～180 °) interlace mode layout with certain angle, cabling mode can be snakelike cabling, the modes such as Back Word walking line, as shown in Figure 7, in the present embodiment, adopt two-layer trigger pip clathrum 302, the line trigger signal 304 of every one deck can have multichannel, each road signal wire 304 all has access to the self-destruction signal independently sending from safe processor on a road, and two-layer line trigger signal 304 alternative arrangement in 90 °, in the present embodiment, leave apart from very little adjacent line trigger signal 304, therefore detectable aperture is arranged very tiny, line trigger signal 304 interlocks and is covered with whole region, between adjacent two line trigger signals, be furnished with ground signalling line, also be, as shown in Figure 7, along the trend of line trigger signal, between the adjacent line segment A being parallel to each other between two and line segment B gap, pour into ground signalling C, line trigger signal 304 is by ground short circuit or when being subject to physical detecting and causing self-destruction signal to open circuit, all can cause safe processor 202 to carry out Initiative Defense action, moment is removed working key and other sensitive informations in safe processor.Certainly, the number of plies that arranges of trigger pip clathrum 302 is not limited to give an example in the present embodiment, the way of line trigger signal 304 is also not limited to the present embodiment and gives an example, below all can increase and decrease according to actual needs, the number of plies ways more, line trigger signal 304 of trigger pip clathrum 302 are more, wire laying mode is more complicated, and the difficulty that magnetic head is attacked is just larger.
In addition, being positioned at outermost basic unit 303 is ground plane, and/or, be provided with the layer of components and parts, the trigger pip clathrum 302 of internal layer can be covered in basic unit 303, ground plane can cause safe processor 202 internal security modules to trigger to the short circuit of trigger pip clathrum 302, can prevent physical detecting.
The Initiative Defense function of so-called safe processor 202; it is the inner integrated defencive function of safe processor 202; once the self-destruction signal (SDI that safe processor produces; Self-Destruct Input) be touched (opening circuit or short circuit), will wipe working key and other sensitive informations moment.On FPC circuit board, generally by having through hole, self-destruction signal is drawn by safe processor 202 at present, because the end of through hole easily exposes, therefore be subject to detection, the present embodiment is not surveyed by outside in order further to ensure self-destruction signal, shown in Figure 8, on trigger pip clathrum 302, have blind hole 401, for the self-destruction signal that comes from safe processor 202 is accessed to the line trigger signal 304 that is arranged in this layer, by adopting blind hole structure, expose without external holes position, self-destruction signal is not easy to be detected.
Safe processor 202 comprises magnetic card decoder module (being integrated in safe processor inside), magnetic card decoder module is for being decoded as digital signal by magnetic card simulated data, described safe processor is sent to user processor by decoded card information after according to certain algorithm for encryption, encryption can adopt safe processor internal hardware crypto engine to encrypt, without design other magnetic card decoder module in payment terminal by the advantage of magnetic card decoder module is set at safe processor 202 ends, reduce the complicacy of payment terminal circuit, also be that magnetic head can complete the operation that card information is read and decoded simultaneously.Accordingly for ensure decoded information by magnetic head to the safe transmission between payment terminal application processor, the safe processor of magnetic head can be encrypted rear transmission to data by cryptographic algorithm, the application processor of payment terminal only need adopt corresponding decipherment algorithm to solve, by adopting ciphertext transmission, even if safe processor is under attack to the transmission line between application processor, attacks the ciphertext obtaining and also cannot crack.
Embodiment bis-, based on a kind of magnetic head in embodiment mono-, the present embodiment provides a kind of security terminal with this kind of magnetic head, shown in Figure 9, comprises magnetic head 2, and this magnetic head 2 is fixed on payment terminal by elastic support 501.The project organization of magnetic head 2 can be referring to the structure in embodiment mono-, and therefore not to repeat here, and in embodiment mono-, the advantage of magnetic head and good effect also all may be embodied in safety terminal.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.
Claims (10)
1. one kind is applied to the magnetic head of security terminal, the safe processor that comprises circuit structure and be electrically connected with described circuit structure, it is characterized in that, described magnetic head also comprises shell, described circuit structure is placed in shell, and the top of shell is sealed by casing cover, the inside surface of described casing cover is provided with magnet, in described shell, be also provided with the magnetic field induction sensor being electrically connected with described safe processor, described magnetic field induction sensor is for detection of the variation of the magnetic flux through its outside surface, and the variation of described magnetic flux is converted to electric signal is sent to safe processor.
2. magnetic head according to claim 1, it is characterized in that, described circuit structure is the enclosed construction that FPC circuit board forms, described FPC circuit board comprises element layer, at least one deck trigger pip clathrum and basic unit, described element layer is positioned at the inner side of described enclosed construction, at least described in one deck, on trigger pip clathrum, be furnished with the line trigger signal being electrically connected with safe processor, safe processor and magnetic field induction sensor are all arranged on the inside surface of described FPC circuit board.
3. magnetic head according to claim 2, it is characterized in that, described enclosed construction is hexahedron structure or octahedral structure, the upper bottom surface of wherein said hexahedron structure or octahedral structure and bottom surface are all parallel to described casing cover, and described safe processor is arranged on the bottom surface of described hexahedron structure or octahedral structure, described magnetic field induction sensor setting is on the upper bottom surface of described hexahedron structure or octahedral structure.
4. magnetic head according to claim 2, is characterized in that: described trigger pip clathrum is two-layer or two-layer when above, is distributed in the direction of routing difference of the line trigger signal on adjacent two layers trigger pip clathrum.
5. magnetic head according to claim 2, is characterized in that, is furnished with at least one road line trigger signal on every layer of trigger pip clathrum.
6. magnetic head according to claim 2, is characterized in that, between adjacent two line trigger signals, is furnished with ground signalling line.
7. magnetic head according to claim 2, is characterized in that, on described trigger pip clathrum, has blind hole, for the trigger pip that comes from safe processor is accessed to line trigger signal.
8. magnetic head according to claim 2, is characterized in that, described basic unit is ground plane, and/or, be provided with the layer of components and parts.
9. according to the magnetic head described in claim 1-8 any one, it is characterized in that, in described shell, be perfused with dielectric material, for fixing described circuit structure and magnetic card inductive component.
10. a security terminal, is characterized in that, comprises the magnetic head as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420167830.9U CN203759797U (en) | 2014-04-09 | 2014-04-09 | Magnetic head for security terminal and security terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420167830.9U CN203759797U (en) | 2014-04-09 | 2014-04-09 | Magnetic head for security terminal and security terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203759797U true CN203759797U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420167830.9U Expired - Fee Related CN203759797U (en) | 2014-04-09 | 2014-04-09 | Magnetic head for security terminal and security terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203759797U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105930747A (en) * | 2015-08-20 | 2016-09-07 | 天地融科技股份有限公司 | Electronic device and protection method for electronic device |
| CN105989312A (en) * | 2015-08-20 | 2016-10-05 | 天地融科技股份有限公司 | Electronic device and control method therefor |
| CN108597148A (en) * | 2018-03-30 | 2018-09-28 | 昆明飞盟科技有限公司 | The financial antitheft card detection apparatus of ATM and antitheft card test method |
-
2014
- 2014-04-09 CN CN201420167830.9U patent/CN203759797U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105930747A (en) * | 2015-08-20 | 2016-09-07 | 天地融科技股份有限公司 | Electronic device and protection method for electronic device |
| CN105989312A (en) * | 2015-08-20 | 2016-10-05 | 天地融科技股份有限公司 | Electronic device and control method therefor |
| CN108597148A (en) * | 2018-03-30 | 2018-09-28 | 昆明飞盟科技有限公司 | The financial antitheft card detection apparatus of ATM and antitheft card test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 3 building, No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao, China Patentee after: Qingdao Hisense intelligent business systems Limited by Share Ltd Address before: 3 building, No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao, China Patentee before: Qingdao Hisense Intelligent Commercial System Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20200409 |
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| CF01 | Termination of patent right due to non-payment of annual fee |