KR101620955B1 - Anti-Tampering Magnetic Stripe Reader - Google Patents

Anti-Tampering Magnetic Stripe Reader Download PDF

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Publication number
KR101620955B1
KR101620955B1 KR1020150055430A KR20150055430A KR101620955B1 KR 101620955 B1 KR101620955 B1 KR 101620955B1 KR 1020150055430 A KR1020150055430 A KR 1020150055430A KR 20150055430 A KR20150055430 A KR 20150055430A KR 101620955 B1 KR101620955 B1 KR 101620955B1
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KR
South Korea
Prior art keywords
node
intermediate node
read sensor
receiving
magnetic stripe
Prior art date
Application number
KR1020150055430A
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Korean (ko)
Inventor
박경학
류승환
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(주)신흥정밀
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Priority to KR1020150055430A priority Critical patent/KR101620955B1/en
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Publication of KR101620955B1 publication Critical patent/KR101620955B1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G06K7/084—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
    • G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers

Abstract

The present invention relates to a magnetic stripe reader, and more particularly, to a magnetic stripe reader having a probe prevention structure.
According to the present invention, there is provided an information processing apparatus including an external connection unit including a receiving node for receiving external power, an input node connected to the receiving node for receiving a power supply, A first side configured to fold into the read sensor portion from one side of the read sensor portion to form a probe structure, and a control portion configured to detect the probe and to control the pulling of the external power A magnetic stripe reader is initiated.

Description

(Anti-Tampering Magnetic Stripe Reader) having a probe-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic stripe reader (MSR), and more particularly, to a magnetic stripe reader having a probe prevention function to prevent data from being detected and modulated by the outside.

As credit cards become more popular, magnetic stripe readers are used in many fields. Especially, it is widely used to acquire owner information stored in a magnetic stripe at POS (Point Of Sale) terminal or ATM.

However, the problem of data security in these devices has been constantly raised.

1, which shows the structure of a conventional magnetic strip reader, a magnetic strip reader includes a read sensor unit 110 and an external connection unit 120.

The read sensor unit 110 includes a head unit (not shown) for reading data from a magnetic stripe, a memory 114 for storing a master key necessary for interpreting the read data, A CPU 116 for analyzing the data, and an input node 112 used for transmitting and receiving signals to / from the power source and the outside.

The CPU 116 may be connected to the memory 114 via a printed circuit board (PCB) line, and may also be connected to the input node 112 through a PCB line.

The external connection unit 120 includes reception nodes 122 for signal connection with an external power source. Generally, the external connection unit 120 is formed in the form of a flexible circuit to connect the receiving node 122 and the input node 112 of the reading sensor unit 110.

However, in the conventional magnetic stripe reader, when the input node 112 in the read sensor unit 110 is exposed to the outside and the input node 112 is probed using the illegal probe apparatus, the magnetic stripe reader is read from the read sensor unit 110 Not only the credit card information or the master key information stored in the memory can be leaked, but also the modulated data can be input, which could cause serious problems in data security.

In order to solve the above-described problems, a conventional technology (e.g., Korean Patent Registration No. 1055281) uses a method of covering the entire read sensor unit 110 including input nodes with a material such as epoxy, And the problem that epoxy is easily removable physically has been raised.

Accordingly, there is a need for a device capable of preventing the data from being up / modulated and detected by blocking or sensing the connection of the external data transmission device to the conventional read sensor unit.

Korean Patent No. 1055281

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic stripe reader having a function of preventing a probe from being strayed / detected and detected from outside by data read by a magnetic stripe reader.

It is also an object of the present invention to provide a magnetic strip reader provided with a function of preventing stray / modulation and probing in the outside without the need for epoxy security.

According to an aspect of the present invention, a magnetic stripe reader includes an external connection unit including a receiving node for receiving external power, a memory for storing a master key, card information, and real data And an input node connected to the receiving node for receiving the external power, the reading sensor portion being configured to fold into the reading sensor portion from one side of the reading sensor portion to form a probe protection structure A first side, and a controller for detecting the probe and controlling the pulling of the external power.

Here, the receiving node of the external connection unit and the input node of the reading sensor unit may include at least one of a constant power supply (Vcc) and an emergency power supply (Vbat).

The read sensor unit of the magnetic stripe reader further includes a first intermediate node, and the first side is connected to the input node, and when the read sensor unit is folded into the read sensor unit, 2 intermediate node, and the connection between the receiving node and the input node may be configured to complete with the contact of the first intermediate node and the second intermediate node.

According to another aspect of the present invention for achieving the above-mentioned problem, the magnetic stripe reader further comprises a second side configured to fold from the other side of the read sensor part to the read sensor part to form a probe-prevention structure And the second side may be configured to fold over the first side folded into the read sensor portion.

In addition, the read sensor unit further includes a first intermediate node, wherein the first side is connected to the input node and has a second intermediate node in contact with the first intermediate node when folded into the read sensor unit, Wherein the second side further comprises a third intermediate node that contacts the first intermediate node through the hole when folded into the first side and is connected to the receiving node, The connection between the node and the input node may be completed by the contact of the first intermediate node and the second intermediate node and the contact of the first intermediate node and the third intermediate node.

 According to another aspect of the present invention for achieving the above-mentioned problems, a magnetic stripe reader includes a read sensor unit such that the external connection part folds over the second side folded over the first side part to form a probe- Lt; / RTI >

In addition, the read sensor unit further includes a first intermediate node, wherein the first side is connected to the input node and has a second intermediate node in contact with the first intermediate node when folded into the read sensor unit, Wherein the second side further comprises a third intermediate node in contact with the first intermediate node through the hole when folded into the first side, 3. The apparatus of claim 1, further comprising a fourth intermediate node in contact with the intermediate node and coupled to the receiving node, the connection between the receiving node and the input node comprising a contact between the first intermediate node and the second intermediate node, The contact of the third intermediate node, and the contact of the third intermediate node and the fourth intermediate node.

The control unit of the magnetic stripe reader performs at least one of stopping the introduction of the external power and deleting the master key when a probe for the CPU or the memory is detected, When the connection between the receiving node and the input node is opened, the master key deletion may be performed to prevent data detection and / or modulation.

The magnetic stripe reader according to the present invention is provided with a probe prevention structure that prevents the probable input node from being exposed, thereby preventing data from being detected from outside and preventing up / modulation.

1 is a conceptual diagram showing a structure of a conventional magnetic strip reader.
FIGS. 2A and 2B are a front view and a rear view, respectively, of a magnetic strip reader forming a probe-preventing structure using only a first side according to a first embodiment of the present invention.
FIGS. 3A and 3B are a front view and a rear view, respectively, showing a structure of a magnetic strip reader that forms a probe-preventing structure using a first side portion and a second side portion according to a second embodiment of the present invention;
FIGS. 4A and 4B are a front view and a rear view, respectively, showing a structure of a magnetic strip reader forming a probe-preventing structure using a first side portion, a second side portion, and an external connection portion according to a third embodiment of the present invention;

In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

Although the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, But should be understood to include all modifications, equivalents, and alternatives.

The contact between the intermediate nodes used in the present invention means any means for flowing current between the two intermediate nodes. For example, it may be achieved by soldering between the intermediate nodes, by the connection of electric wires, or by fitting each other in the form of a header and a socket.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description with reference to the accompanying drawings, the same or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

FIGS. 2A and 2B are a front view and a rear view, respectively, of a magnetic strip reader forming a probe-preventing structure using only a first side according to a first embodiment of the present invention.

Referring to FIGS. 2A and 2B, a magnetic strip reader for forming a probe protection structure according to a first embodiment of the present invention includes a read sensor unit 110, an external connection unit 120, a first side unit 210, 230).

The read sensor unit 110 can read the encrypted data stored in the magnetic stripe by using a magnetic header (not shown). The read sensor unit 110 may include a memory 114 capable of storing a master key. Further, the read sensor unit 110 may include a CPU 116 that reads the actual data using the encrypted data and the master key read by the magnetic headers. In addition, the read sensor unit 110 includes a plurality of input nodes 112. The plurality of input nodes 112 include a data transmission node (not shown) for transmitting the read data to the outside. In addition, the plurality of input nodes 112 include a constant power source (Vcc) for supplying power necessary for the CPU 116 to operate from the outside. In addition, the plurality of input nodes 112 include an emergency power source Vbat for receiving the minimum power required by the memory 114 from the outside for saving the master key even if the power source is lost. In addition, the plurality of input nodes 112 include a ground node (GND) for grounding. A plurality of input nodes 112 of the read sensor unit 110 are connected to a plurality of reception nodes 122 of the external connection unit 120. The external connection unit 120 may be implemented using a flexible circuit, for example.

The external connection unit 120 includes a plurality of reception nodes 122. The plurality of receiving nodes 122 include a data receiving node (not shown) for receiving the data read from the reading sensor unit 110. In addition, the plurality of receiving nodes 122 include a constant power source Vcc for supplying power necessary for the CPU 116 to operate. In addition, the plurality of receiving nodes 122 include an emergency power supply (Vbat) for supplying the minimum power that the memory 114 requires to preserve the master key. In addition, the plurality of receiving nodes 122 include a ground node (GND) for grounding.

The first side 210 may be folded into the read sensor portion 110 to prevent the CPU 116 and the memory 114 from being exposed to the outside. When the first side portion 210 is folded into the read sensor portion 110, exposure of the CPU 116 and the memory 114 can be prevented, thereby eliminating the possibility of illegal probing.

The control unit 230 may detect that a probe has occurred to the input node 112, the receiving node 122, or the first side 210. [ For example, the controller 230 may have a function of detecting the occurrence of a probe using a change in a current flowing when a probe is generated and / or a voltage drop. In addition, when the probe is detected, the controller 230 stops the operation of the magnetic strip reader by preventing the external power (Vcc or Vbat) from being introduced, thereby preventing data detection or up / modulation by the probe. Also, when a probe is detected, the controller 230 may instruct the CPU 1160 to delete the master key to prevent the master key from being stolen.

Further, in order to automatically shut off the supply of external power (Vcc or Vbat) to the CPU 116 when the first side portion 210 is forcibly opened by an external force, the read sensor portion 110 is connected to the first intermediate node 201 204, and the first side 210 may further include a second intermediate node 211, 213. The supply of power from the receiving node 122 to the input node 122 is performed by first intermediate nodes 201-204 and second intermediate nodes 211,213 by folding the first side 210 into the read sensor section 110, Can be completed by being brought into contact with each other. Therefore, when the first side 210 is opened for the probe, the contact of the first intermediate node 201-204 and the second intermediate node 211,213 is released so that the power supply is interrupted and the operation of the magnetic stripe reader is interrupted do. As a result, it is possible to prevent detection and up / modulation of data.

2A and 2B, the Vcc of the receiving node of the external connection unit 120 can be connected to the first intermediate node 202 at the rear (FIG. 2B), and the first intermediate node 202 is connected at the front 2a), the first intermediate node 201 contacts the second intermediate node 211 due to folding of the first side 210, and the second intermediate node 211 (FIG. Is connected to Vcc of the input node 112 of the read sensor unit 110. [ That is, the power supply line from the receiving node 122 to the input node 112 can be completed only when the first side 210 is in contact with the first intermediate node 201 and the second intermediate node 211 . Conversely, when the first side 210 is forcibly opened by an external force, the power supply line from the receiving node 122 to the input node 112 may be opened to interrupt the power supply to the CPU 116 have.

Generally, the power source is an emergency power source (Vbat) for supplying the minimum power required by the memory 114 for saving the master key even if the constant power source Vcc necessary for the operation of the read sensor unit 110 and the constant power source are eliminated, This can be. Although the connection between the receiving node and the input node for the constant power source Vcc has been described in the above embodiment, the same can be applied to the emergency power source Vbat. 2A and 2B show an example in which the present invention is applied to both the emergency power source and the constant power source.

FIGS. 3A and 3B are a front view and a rear view, respectively, showing a structure of a magnetic strip reader that forms a probe-preventing structure using a first side portion and a second side portion according to a second embodiment of the present invention;

Referring to FIGS. 3A and 3B, the magnetic stripe reader forming the probe-protecting structure according to the second embodiment of the present invention may further include the second side 310 in addition to the portions shown in FIG.

The second side 310 may be located on the opposite side of the first side 210 and the second side 310 may be folded into the read sensor portion 110 to form the proximal side 210 of the first side 210 ≪ / RTI >

The control unit 230 may use a change in current and / or a voltage drop when the probe is generated on the input node 112, the receiving node 122, the first side 210, and the second side 310 It may have a function of detecting that a probe has occurred. The operation of the control unit 230 in the case where the occurrence of the probe is detected may be the same as described above, and the power supply (Vcc or Vbat) may be blocked or the master key may be deleted.

In this embodiment, the first side and the second side are covered on the input node 112, so that the prevention of the probe is further enhanced than in the first embodiment. According to the present embodiment, in order to automatically shut off the supply of external power (Vcc or Vbat) to the CPU 116 when the second side 310 is forcibly opened by an external force, And may further include nodes 311 and 313. The first side 210 also exposes the first intermediate node 202,204 after the first side 210 is folded into the read sensor portion 11 to expose the first intermediate node 202,204 and third And may include holes 215 and 217 to allow the intermediate nodes 311 and 313 to contact each other. The supply of power from the receiving node 122 to the input node 112 is such that the first side 210 is folded into the reading sensor section 110 and the second side 310 is folded into the reading sensor section 110 and the first side By folding on the upper portion of the substrate 210. Therefore, when the first side 210 and / or the second side 310 are opened for the probe, the contact of the first intermediate node 201, 203 with the second intermediate node 211, 213 and / The contact between the nodes 202 and 204 and the third intermediate nodes 311 and 313 is released so that the power supply is interrupted and the operation of the magnetic stripe reader is interrupted. As a result, it is possible to prevent detection and up / modulation of data.

As shown in FIGS. 3A and 3B, Vcc of the receiving node 122 of the external connection unit is connected to the third intermediate node 311 at the rear side (FIG. 3B). Vcc of the input node 112 is connected to the second intermediate node 211 and the first intermediate node 201 and the first intermediate node 202 are connected. The first side 210 is folded so that the first intermediate node 201 is in contact with the second intermediate node 211 and the second side 310 is folded so that the first intermediate node 202 and the third intermediate node 211, The power supply line from the receiving node 122 to the input node 112 can be completed only by the contact of the power supply line 311. Wherein the holes 215 in the first side 210 enable contact of the first intermediate node 202 and the third intermediate node 311. Conversely, when the second side 310 is forcibly opened by an external force, the power supply line from the receiving node 122 to the input node 112 can be opened to stop the power supply to the CPU 116. [

The receiving node (Vbat) can also be applied as described above. 3b), Vbat of the input node 112 is connected to the second intermediate node 213, and Vbat of the receiving node 112 is connected to the third intermediate node 313 The node 203 and the first intermediate node 204 are connected. The first side 210 is folded so that there is contact between the first intermediate node 203 and the second intermediate node 213 and the second side 310 is folded so that the first intermediate node 204 and the third intermediate node 213, The power supply line from the receiving node 122 to the input node 112 can be completed only by the contact of the power supply line 313. Wherein the holes 217 in the first side 210 enable contact of the first intermediate node 204 and the third intermediate node 313.

FIGS. 4A and 4B are a front view and a rear view, respectively, showing a structure of a magnetic strip reader forming a probe-preventing structure using a first side portion, a second side portion, and an external connection portion according to a third embodiment of the present invention;

According to the present embodiment, the first side portion 210 is folded and laid on the read sensor portion 110 and the second side portion 310 is folded and laid on the first side portion 210. On the second side portion 310, The connection portion 120 is folded and laid so that the probe prevention structure can be made more rigid.

4A and 4B, in order to prevent the first side portion 210, the second side portion 310, and the external connection portion 120 from being probed after being opened, the external connection portion 120 is connected to the fourth intermediate node 411 413). ≪ / RTI > The connection from the power source (Vcc and Vbat) of the receiving node 122 of the external connection unit 120 to the power sources (Vcc and Vbat) of the input node 112 of the reading sensor unit 110 is controlled by the first intermediate nodes 201, Contact between the first intermediate nodes 202 and 204 and the third intermediate nodes 311 and 313 and between the third intermediate nodes 311 and 313 and the second intermediate nodes 211 and 213, 4 intermediate nodes 411, 413, respectively. Therefore, when the first side 210, the second side, and / or the external connection 120 are opened for the probe, the contact between the first intermediate node 201, 203 and the second intermediate node 211, 213, The contact of the first intermediate node 311 or 313 with the first intermediate node 311 or 313 and the contact of the first intermediate node 202 or 204 with the third intermediate node 311 or 313 and / The supply is interrupted and the operation of the magnetic strip reader is stopped. As a result, it is possible to prevent detection and up / modulation of data.

As shown in FIGS. 4A and 4B, the Vcc of the receiving node 122 may be coupled to the fourth intermediate node 413 (FIG. 4B). Referring to FIG. 4A, at the front, the input node 112 may be connected to the second intermediate node 211, and the first intermediate node 201 and the first intermediate node 202 may be connected. The first side 210 is folded so that the first intermediate node 201 contacts the second intermediate node 211 and the second side 310 is folded so that the first intermediate node 202 and the third intermediate node 311 The connection between the receiving node 122 and the input node 112 can be completed only when the first intermediate node 311 and the fourth intermediate node 313 are in contact with each other and the external connecting portion 120 is folded. The description of Vcc of the receiving node 122 in FIGS. 4A and 4B is applicable to the Vbat of the receiving node 122, and a detailed description thereof will be omitted.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims and their equivalents. Only. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

Claims (10)

An external connection including a receiving node for receiving external power;
A read sensor unit including a memory for storing a master key, a CPU for reading actual data using card information and the master key, and an input node connected to the receiving node for receiving the external power;
A first side portion configured to fold into the read sensor portion from one side of the read sensor portion to form a probe protection structure; And
A control unit for detecting the probe and controlling the introduction of the external power,
And a magnetic stripe reader. The method according to claim 1,
Wherein the receiving node of the external connection part and the input node of the reading sensor part comprise at least one of a constant power supply (Vcc) and an emergency power supply (Vbat)
Magnetic stripe reader. 3. The method of claim 2,
Wherein the read sensor unit further comprises a first intermediate node connected to the receiving node,
The first side further comprising a second intermediate node connected to the input node and contacting the first intermediate node when folded into the read sensor section,
Wherein the connection between the receiving node and the input node is completed with a contact of the first intermediate node and the second intermediate node,
Magnetic stripe reader. The apparatus of claim 3,
Stopping the introduction of the external power and deleting the master key when a probe for the CPU or the memory is detected,
Performing the master key deletion when the connection between the receiving node and the input node is opened,
Magnetic stripe reader. 3. The method of claim 2,
Further comprising a second side configured to fold from the other side of the read sensor portion to the read sensor portion to form the anti-tamper structure,
The second side being configured to fold over the first side folded into the read sensor portion,
Magnetic stripe reader. 6. The method of claim 5,
Wherein the read sensor unit further comprises a first intermediate node,
Wherein the first side further comprises a second intermediate node in contact with the first intermediate node when folded into the read sensor section while being connected to the input node and a hole exposing the first intermediate node,
Wherein the second side further comprises a third intermediate node that contacts the first intermediate node through the hole when folded into the first side and is connected to the receiving node,
Wherein the connection between the receiving node and the input node is completed by the contact of the first intermediate node and the second intermediate node and the contact of the first intermediate node and the third intermediate node,
Magnetic stripe reader. 7. The apparatus of claim 6,
Stopping the introduction of the external power and deleting the master key when a probe for the CPU or the memory is detected,
Performing the master key deletion when the connection between the receiving node and the input node is opened,
Magnetic stripe reader. 6. The method of claim 5,
Wherein the external connection portion is configured to fold over the read sensor portion and the second side folded over the first side to form a probe-
Magnetic stripe reader. 9. The method of claim 8,
Wherein the read sensor unit further comprises a first intermediate node,
Wherein the first side further comprises a second intermediate node connected to the input node and contacting the first intermediate node when folded into the read sensor section and a hole exposing the first intermediate node,
The second side further comprising a third intermediate node in contact with the first intermediate node through the hole when folded into the first side,
Further comprising a fourth intermediate node in contact with the third intermediate node and connected to the receiving node when the external connection is folded,
Wherein the connection between the receiving node and the input node comprises a contact between the first intermediate node and the second intermediate node, a contact between the second intermediate node and the third intermediate node, Lt; / RTI >
Magnetic stripe reader. 10. The apparatus according to claim 9,
Stopping the introduction of the external power and deleting the master key when a probe for the CPU or the memory is detected,
Performing the master key deletion when the connection between the receiving node and the input node is opened,
Magnetic stripe reader.
KR1020150055430A 2015-04-20 2015-04-20 Anti-Tampering Magnetic Stripe Reader KR101620955B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101055281B1 (en) 2009-08-14 2011-08-09 한국정보통신주식회사 Card reader with hack protection
KR101108117B1 (en) 2010-01-12 2012-01-31 한국정보통신주식회사 Hacking prevention apparatus for card reader

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101055281B1 (en) 2009-08-14 2011-08-09 한국정보통신주식회사 Card reader with hack protection
KR101108117B1 (en) 2010-01-12 2012-01-31 한국정보통신주식회사 Hacking prevention apparatus for card reader

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