Single-kernel security authentication device with multiple USB (universal serial bus) interfaces

A technology of security authentication equipment and USB interface, applied in the field of security authentication equipment with single core and multi-USB interface, can solve the problems of single interface mode, single interface form, inconvenient users, etc., and achieve the effect of normal communication

Inactive Publication Date: 2015-04-29
CENTURY LONGMAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, security identity authentication devices that meet the PKI standard have the characteristics of high security and wide application range, but most devices appear in the form of USB interfaces and smart card interfaces, and the interface form of such contact devices is relatively ...

Method used

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  • Single-kernel security authentication device with multiple USB (universal serial bus) interfaces
  • Single-kernel security authentication device with multiple USB (universal serial bus) interfaces
  • Single-kernel security authentication device with multiple USB (universal serial bus) interfaces

Examples

Experimental program
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Embodiment 1

[0045] see figure 1 , which is a schematic diagram of Embodiment 1 of a security authentication device with single-core and multiple USB interfaces provided by the present invention.

[0046] The security authentication device with single-core and multiple USB interfaces provided in this embodiment includes at least the following two types of USB interfaces: a first USB interface 100 and a second USB interface 400; also includes: a security management module 300, a first detection module 200 and The second detection module 500;

[0047] The first detection module 200 is configured to detect a first voltage signal of the first USB interface 100;

[0048] The second detection module 500 is configured to detect a second voltage signal of the second USB interface 100;

[0049] The security management module 300 is configured to enumerate the security authentication device as the host type corresponding to the first USB interface 100 when judging that the first voltage signal is ...

Embodiment 2

[0060] see figure 2 , which is a schematic diagram of Embodiment 2 of a security authentication device with single-core and multiple USB interfaces provided by the present invention.

[0061] In this embodiment, the first detection module 200 is a first voltage divider circuit;

[0062] The first terminal of the first voltage dividing circuit is connected to the power supply terminal of the first USB interface 100; the second terminal of the first voltage dividing circuit is connected to the security management module.

[0063] In this embodiment, the first USB interface 100 is a USB-Micro interface, and the second USB interface is a USB-A interface as an example for introduction.

[0064] The first voltage dividing circuit includes: a first resistor R1, a second resistor R2 and a third resistor R3;

[0065] The first end of the first resistor R1 is the first end of the first voltage divider circuit;

[0066] The first end of the first resistor R1 is connected to the power...

Embodiment 3

[0085] see image 3 , which is a schematic diagram of Embodiment 3 of a security authentication device with single-core and multiple USB interfaces provided by the present invention.

[0086] The power protection module includes a first diode and a second diode;

[0087] The anode of the first diode is connected to the power supply terminal of the first USB interface, the cathode of the first diode is connected to the cathode of the second diode, and the anode of the second diode is connected to The power terminal of the second USB interface.

[0088] Meanwhile, the cathodes of D1 and D2 are both connected to the power supply terminal of the security management module 300 to provide power for the security management module.

[0089] D1 and D2 will protect the power supply of each interface from being disturbed by other power supplies. For example, when a host is connected to the first USB interface, the voltage increase at point a will not affect the voltage at point e.

...

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Abstract

The invention provides a single-kernel security authentication device with multiple USB (universal serial bus) interfaces. The security authentication device comprises at least two types of USB interfaces, namely a first USB interface and a second USB interface and further comprises a first detection module, a second detection module and a security management module. The first detection module is used for detecting a first voltage signal of the first USB interface; the second detection module is used for detecting a second voltage signal of the second USB interface; the security management module is used for enumerating the security authentication device as a host type corresponding to the second USB interface when the second voltage signal is judged to be effective; when both the first voltage signal and the second voltage signal are judged to be effective, a USB bus is hung up. When both the USB interfaces are judged to be connected into hosts, the USB bus is hung up, and a USB bus command is prevented from being interfered. Normal communication when the USB interfaces are available can be realized, and protective measures when the multiple hosts are connected in are available.

Description

technical field [0001] The invention relates to the technical field of security authentication equipment, in particular to a single-core multiple USB interface security authentication equipment. Background technique [0002] First, let's introduce the security authentication device. [0003] It is mainly reflected in the form of USB Key. USB Key is a hardware device with a USB interface. The device has a built-in smart card chip that can store the user's key or digital certificate, and use the built-in cryptographic algorithm of the USB Key to authenticate the user's identity. [0004] In the prior art, security identity authentication devices conforming to the PKI standard have the characteristics of high security and wide application range, but most devices appear in the form of USB interface and smart card interface, and the interface form of such contact devices is relatively simple. Therefore, it cannot be applied to current mobile terminals, such as mobile phones and...

Claims

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Application Information

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IPC IPC(8): G06F21/34G06F13/38
CPCG06F21/34G06F13/4068G06F2213/40G06F2221/2141
Inventor 李刚杨利民
Owner CENTURY LONGMAI TECH
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