CN111158441A - ARM mainboard with encryption and anti-disassembly functions - Google Patents
ARM mainboard with encryption and anti-disassembly functions Download PDFInfo
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- CN111158441A CN111158441A CN201911188152.8A CN201911188152A CN111158441A CN 111158441 A CN111158441 A CN 111158441A CN 201911188152 A CN201911188152 A CN 201911188152A CN 111158441 A CN111158441 A CN 111158441A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
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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
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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Abstract
The invention discloses an ARM mainboard with encryption and anti-disassembly functions, which comprises a core board and a bottom board; the core board is welded on the bottom board in a stamp hole packaging mode; the core board is integrated with an ARM processor, an LPDDR3 internal memory, an EMMC memory and a power management chip; a plurality of chips and interfaces are integrated on the bottom plate; the invention integrates a plurality of interfaces such as display, touch, audio, a camera, Ethernet, wireless communication, TF card, USB, serial port, I2C, SPI, ADC, GPIO and the like, has complete functions and good expansibility, more importantly, a mainboard board carries a high-performance safe encryption chip and supports encryption algorithms such as DES, 3DES, SM1, SM2, SM3, SM4 and the like, and meanwhile, the mainboard is added with a tamper-proof function, so that a terminal product can be safer and more reliable.
Description
Technical Field
The invention relates to an ARM mainboard with encryption and anti-disassembly functions, and belongs to the technical field of financial terminals.
Background
With the continuous development of the technology, in the financial industry, intelligent terminal products using the ARM mainboard as the main control unit are more and more widely used, and it is vital to ensure the safety of each financial terminal for the information safety of the whole financial industry.
The ARM mainboard is an embedded mainboard carrying an ARM processor, the mainboard is also provided with devices such as a DDR memory, a Flash memory, a power management chip, a wireless communication module, an interface chip, an interface connector and the like besides the ARM processor, and compared with the traditional X86 mainboard, the ARM mainboard has the characteristics of low power consumption, low cost, high safety, good flexibility and the like, and the adoption of the embedded ARM mainboard to replace the X86 mainboard is a trend in many places; however, the ARM main board in the prior art does not have the encryption and anti-dismantling functions, is low in safety, and has certain safety risk when being used on financial intelligent terminal products.
Disclosure of Invention
In view of the above technical problems, the present invention aims to: the ARM mainboard with the encryption and anti-disassembly functions is provided, and the safety of the financial intelligent terminal is effectively enhanced.
The technical solution of the invention is realized as follows: an ARM mainboard with encryption and anti-disassembly functions comprises a core board and a bottom board; the core board is welded on the bottom board in a stamp hole packaging mode; the core board is integrated with an ARM processor, an LPDDR3 internal memory, an EMMC memory and a power management chip; a plurality of chips and interfaces are integrated on the bottom plate; the chip comprises a power supply chip, an LVDS display chip, an AUDIO chip, an Ethernet PHY chip, a WiFi & Bluetooth module, an USB2.0HUB chip, an SPI-to-UART chip, an RS232 transceiver chip, an RS485 transceiver chip, an RTC chip, a watchdog chip, an EEPROM storage chip and an encryption chip; the interface comprises a DC power interface, an HDMI display interface, an eDP display interface, an LVDS display interface, an MIPI-DSI display interface, an MIPI-CSI camera interface, a display screen backlight interface, a display screen touch interface, a loudspeaker interface, an earphone interface, an MIC interface, a line in interface, a line out interface, an I2S interface, an Ethernet interface, a WiFi & Bluetooth antenna interface, a mini PCIE interface, a SIM card interface, a TF card interface, a USB2.0 interface, a USB3.0 interface, an RS232 interface, an RS485 interface, an SPI interface, an I2C interface, an ADC interface, a key interface, a cooling fan interface, an IR infrared interface, a GPIO interface, an RTC battery interface and an anti-disassembly interface; the power supply chip and the DC power supply interface are connected in series and connected to the core board; the LVDS display chip and the LVDS display interface are connected in series and connected to the core board; one end of the AUDIO chip is connected to the core board, and the other end of the AUDIO chip is connected with a line in interface, a line out interface, a loudspeaker interface, an earphone interface and an MIC interface in parallel; the Ethernet PHY chip is connected with the Ethernet interface in series and connected to the core board; the WiFi & Bluetooth module is connected with the WiFi & Bluetooth antenna interface in series and connected to the core board; one end of the USB2.0HUB chip is connected with the core board, and the other end of the USB2.0HUB chip is connected with the USB2.0 interface and the encryption chip in parallel; the encryption chip is connected in series with an anti-disassembly interface; one end of the SPI-UART chip is connected with the core board, and the other end of the SPI-UART chip is connected with an RS232 transceiver chip and an RS485 transceiver chip in parallel; the RS232 transceiver chip is connected with an RS232 interface in series; the RS485 transceiver chip is connected with an RS485 interface in series; the RTC chip and the RTC battery interface are connected in series and connected on the core board; the watchdog chip and the EEPROM memory chip are respectively connected with the core board in series; the mini PCIE interface is connected with the SIM card interface in series and is connected with the core board; the HDMI display interface, the eDP display interface, the MIPI-DSI display interface, the MIPI-CSI camera interface, the display screen backlight interface, the display screen touch interface, the I2S interface, the TF card interface, the USB3.0 interface, the SPI interface, the I2C interface, the ADC interface, the key interface, the cooling fan interface, the IR infrared interface and the GPIO interface are all connected in series on the core board.
Preferably, the encryption chip is connected with the ARM processor through a USB bus.
Preferably, an interface circuit is arranged in the anti-dismantling interface; the interface circuit comprises a resistor R1, a resistor R2 and a connector; the first connection pin of the connector is connected to a high level through a resistor R1; the second wiring pin of the connector is grounded through a resistor R2 and is connected to the self-destruction detection pin of the encryption chip; the connector is connected to the tamper-evident contacts of the housing by a cable.
Preferably, the number of the anti-disassembly interfaces is one.
Preferably, the number of the anti-disassembly interfaces is more than one.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the ARM mainboard with the encryption and anti-disassembly functions integrates a plurality of interfaces such as display, touch, audio, a camera, Ethernet, wireless communication, TF cards, USB, serial ports, I2C, SPI, ADC, GPIO and the like, is complete in function, good in expansibility and more important, a high-performance safety encryption chip is arranged on the mainboard, encryption algorithms such as DES, 3DES, SM1, SM2, SM3 and SM4 are supported, and meanwhile, the anti-disassembly function is added to the mainboard, so that a terminal product can be safer and more reliable.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1 is a schematic diagram of an ARM motherboard with encryption and anti-tamper functions according to the present invention;
FIG. 2 is a schematic diagram of the connection between an encryption chip of an ARM motherboard with encryption and anti-tamper functions and an ARM processor;
FIG. 3 is a schematic diagram of an anti-tamper interface circuit of an ARM motherboard with encryption and anti-tamper functions according to the present invention;
wherein, 1, a core board; 2. a base plate; 3. an ARM processor; 4. LPDDR3 memory; 5. an EMMC memory; 6. a power management chip; 7. a power supply chip; 8. an LVDS display chip; 9. an AUDIO chip; 10. an Ethernet PHY chip; 11. a WiFi & Bluetooth module; 12. USB2.0HUB chip; 13. converting SPI into UART chip; 14. an RS232 transceiver chip; 15. an RS485 transceiver chip; 16. an RTC chip; 17. a watchdog chip; 18. an EEPROM memory chip; 19. encrypting the chip; 20. a DC power interface; 21. an HDMI display interface; 22. an eDP display interface; 23. an LVDS display interface; 24. an MIPI-DSI display interface; 25. an MIPI-CSI camera interface; 26. a display screen backlight interface; 27. a display screen touch interface; 28. a horn interface; 29. an earphone interface; 30. an MIC interface; 31. a line in interface; 32. a line out interface; 33. an I2S interface; 34. an Ethernet interface; 35. WiFi & bluetooth antenna interface; 36. a mini PCIE interface; 37. a SIM card interface; 38. a TF card interface; 39. a USB2.0 interface; 40. a USB3.0 interface; 41. an RS232 interface; 42. an RS485 interface; 43. an SPI interface; 44. an I2C interface; 45. an ADC interface; 46. a key interface; 47. a heat dissipation fan interface; 48. an IR infrared interface; 49. a GPIO interface; 50. an RTC battery interface; 51. the anti-dismantling interface; 52. a resistor R1; 53. a resistor R2; 54. a connector; 55. a self-destruct detection pin.
Detailed Description
The invention is described below with reference to the accompanying drawings.
As shown in fig. 1-3, the ARM motherboard with encryption and anti-tamper functions according to the present invention includes a core board 1 and a bottom board 2; the core board 1 is welded on the bottom board 2 in a stamp hole packaging mode; the core board 1 is integrated with an ARM processor 3, an LPDDR3 internal memory 4, an EMMC memory 5 and a power management chip 6; a plurality of chips and interfaces are integrated on the bottom plate 2; the chip comprises a power supply chip 7, an LVDS display chip 8, an AUDIO chip 9, an Ethernet PHY chip 10, a WiFi & Bluetooth module 11, a USB2.0HUB chip 12, an SPI-to-UART chip 13, an RS232 transceiver chip 14, an RS485 transceiver chip 15, an RTC chip 16, a watchdog chip 17, an EEPROM storage chip 18 and an encryption chip 19; the interfaces comprise a DC power interface 20, an HDMI display interface 21, an eDP display interface 22, an LVDS display interface 23, an MIPI-DSI display interface 24, an MIPI-CSI camera interface 25, a display screen backlight interface 26, a display screen touch interface 27, a speaker interface 28, an earphone interface 29, an MIC interface 30, a line in interface 31, a line out interface 32, an I2S interface 33, an Ethernet interface 34, a WiFi & Bluetooth antenna interface 35, a mini PCIE interface 36, a SIM card interface 37, a TF card interface 38, a USB2.0 interface 39, a USB3.0 interface 40, an RS232 interface 41, an RS485 interface 42, an SPI interface 43, an I2C interface 44, an ADC interface 45, a key interface 46, a cooling fan interface 47, an IR infrared interface 48, a GPIO interface 49, an RTC battery interface 50 and an anti-disassembly interface 51; the power supply chip 7 and the DC power supply interface 20 are connected in series and connected on the core board 1; the LVDS display chip 8 and the LVDS display interface 23 are connected in series and connected on the core board 1; one end of the AUDIO chip 9 is connected to the core board 1, and the other end is connected in parallel with a line in interface 31, a line out interface 32, a loudspeaker interface 28, an earphone interface 29 and an MIC interface 30; the ethernet PHY chip 10 is connected in series with the ethernet interface 34 and connected to the core board 1; the WiFi & Bluetooth module 11 and the WiFi & Bluetooth antenna interface 35 are connected in series and connected to the core board 1; one end of the USB2.0HUB chip 12 is connected with the core board 1, and the other end is connected with the USB2.0 interface 39 and the encryption chip 19 in parallel; the encryption chip 19 is connected in series with an anti-disassembly interface 51; one end of the SPI-to-UART chip 13 is connected with the core board 1, and the other end of the SPI-to-UART chip is connected with an RS232 transceiver chip 14 and an RS485 transceiver chip 15 in parallel; the RS232 transceiver chip 14 is connected in series with an RS232 interface 41; the RS485 transceiver chip 15 is connected in series with an RS485 interface 42; the RTC chip 16 and the RTC battery interface 50 are connected in series and connected on the core board 1; the watchdog chip 17 and the EEPROM memory chip 18 are respectively connected with the core board 1 in series; the mini PCIE interface 36 is connected with the SIM card interface 37 in series and is connected with the core board 1; the HDMI display interface 21, the eDP display interface 22, the MIPI-DSI display interface 24, the MIPI-CSI camera interface 25, the display screen backlight interface 26, the display screen touch interface 27, the I2S interface 33, the TF card interface 38, the USB3.0 interface 40, the SPI interface 43, the I2C interface 44, the ADC interface 45, the key interface 46, the cooling fan interface 47, the IR infrared interface 48 and the GPIO interface 49 are connected in series on the core board 1.
In order to perfect data transmission and improve the safety of a mainboard, the encryption chip 19 is connected with the ARM processor 3 through a USB bus to realize encryption of important data of the system, the anti-dismantling interface 51 is connected with the self-destruction detection pin 55 of the encryption chip 19, and when the machine is detected to be dismantled illegally, the self-destruction function is started, so that the machine is prevented from being modified illegally, and the data safety of a user is guaranteed.
An interface circuit is arranged in the anti-disassembly interface 51; the interface circuit comprises a resistor R152, a resistor R253 and a connector 54; a first terminal pin of the connector 54 is connected to a high level via a resistor R152; the second connection pin of the connector 54 is grounded through a resistor R253 and is connected to the self-destruction detection pin 55 of the encryption chip 19; the connector 54 is connected to a tamper contact of the housing by a cable, and the cryptographic chip 19 determines whether the machine is detached by detecting the high or low level of the self-destruction detection pin 55.
In order to meet the requirement of multiple interfaces of the mainboard, the number of the anti-dismounting interfaces 51 is one or more.
The ARM mainboard with the encryption and anti-disassembly functions integrates a plurality of interfaces such as display, touch, audio, a camera, Ethernet, wireless communication, TF cards, USB, serial ports, I2C, SPI, ADC, GPIO and the like, has complete functions and good expansibility, is more important, is provided with a high-performance safety encryption chip 19 to support encryption algorithms such as DES, 3DES, SM1, SM2, SM3, SM4 and the like, is added with the anti-disassembly function, and can ensure that a terminal product is safer and more reliable.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (5)
1. The utility model provides an ARM mainboard that function was encrypted and prevented tearing open in area which characterized in that: comprises a core board and a bottom board; the core board is welded on the bottom board in a stamp hole packaging mode; the core board is integrated with an ARM processor, an LPDDR3 internal memory, an EMMC memory and a power management chip; a plurality of chips and interfaces are integrated on the bottom plate; the chip comprises a power supply chip, an LVDS display chip, an AUDIO chip, an Ethernet PHY chip, a WiFi & Bluetooth module, a USB2.0HUB chip, an SPI-to-UART chip, an RS232 transceiver chip, an RS485 transceiver chip, an RTC chip, a watchdog chip, an EEPROM storage chip and an encryption chip; the interface comprises a DC power interface, an HDMI display interface, an eDP display interface, an LVDS display interface, an MIPI-DSI display interface, an MIPI-CSI camera interface, a display screen backlight interface, a display screen touch interface, a loudspeaker interface, an earphone interface, an MIC interface, a line in interface, a line out interface, an I2S interface, an Ethernet interface, a WiFi & Bluetooth antenna interface, a miniCIE interface, a SIM card interface, a TF card interface, a USB2.0 interface, a USB3.0 interface, an RS232 interface, an RS485 interface, an SPI interface, an I2C interface, an ADC interface, a key interface, a cooling fan interface, an IR infrared interface, a GPIO interface, an RTC battery interface and an anti-disassembly interface; the power supply chip and the DC power supply interface are connected in series and connected to the core board; the LVDS display chip and the LVDS display interface are connected in series and connected to the core board; one end of the AUDIO chip is connected to the core board, and the other end of the AUDIO chip is connected with a line in interface, a line out interface, a loudspeaker interface, an earphone interface and an MIC interface in parallel; the Ethernet PHY chip is connected with the Ethernet interface in series and connected to the core board; the WiFi & Bluetooth module is connected with the WiFi & Bluetooth antenna interface in series and connected to the core board; one end of the USB2.0HUB chip is connected with the core board, and the other end of the USB2.0HUB chip is connected with the USB2.0 interface and the encryption chip in parallel; the encryption chip is connected in series with an anti-disassembly interface; one end of the SPI-UART chip is connected with the core board, and the other end of the SPI-UART chip is connected with an RS232 transceiver chip and an RS485 transceiver chip in parallel; the RS232 transceiver chip is connected with an RS232 interface in series; the RS485 transceiver chip is connected with an RS485 interface in series; the RTC chip and the RTC battery interface are connected in series and connected on the core board; the watchdog chip and the EEPROM memory chip are respectively connected with the core board in series; the mini PCIE interface is connected with the SIM card interface in series and is connected with the core board; the HDMI display interface, the eDP display interface, the MIPI-DSI display interface, the MIPI-CSI camera interface, the display screen backlight interface, the display screen touch interface, the I2S interface, the TF card interface, the USB3.0 interface, the SPI interface, the I2C interface, the ADC interface, the key interface, the cooling fan interface, the IR infrared interface and the GPIO interface are all connected in series on the core board.
2. The ARM mainboard with encryption and anti-disassembly functions of claim 1, wherein: the encryption chip is connected with the ARM processor through a USB bus.
3. The ARM mainboard with encryption and anti-disassembly functions of claim 1, wherein: an interface circuit is arranged in the anti-disassembly interface; the interface circuit comprises a resistor R1, a resistor R2 and a connector; the first connection pin of the connector is connected to a high level through a resistor R1; the second wiring pin of the connector is grounded through a resistor R2 and is connected to the self-destruction detection pin of the encryption chip; the connector is connected to the tamper-evident contacts of the housing by a cable.
4. The ARM main board with encryption and anti-disassembly functions of claim 1 or 3, wherein: the number of the anti-dismantling interfaces is one.
5. The ARM main board with encryption and anti-disassembly functions of claim 1 or 3, wherein: the number of the anti-dismantling interfaces is more than one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188152.8A CN111158441A (en) | 2019-11-28 | 2019-11-28 | ARM mainboard with encryption and anti-disassembly functions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911188152.8A CN111158441A (en) | 2019-11-28 | 2019-11-28 | ARM mainboard with encryption and anti-disassembly functions |
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| CN111158441A true CN111158441A (en) | 2020-05-15 |
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| CN201911188152.8A Pending CN111158441A (en) | 2019-11-28 | 2019-11-28 | ARM mainboard with encryption and anti-disassembly functions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112631967A (en) * | 2020-12-18 | 2021-04-09 | 北京中电华大电子设计有限责任公司 | High-capacity TF-SIM card and communication method thereof |
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