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Double-interface and large-capacity storage security smart card

A large-capacity storage and smart card technology, which is applied to record carriers used in machines, instruments, computer parts, etc., can solve the problems of difficulty in application and promotion, lack of large-capacity storage functions, and low performance of large-capacity storage applications. The effect of scope of application, difficulty reduction, and low cost

Inactive Publication Date: 2009-04-01
上海奕华信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, handheld mobile computing terminals (mobile phones, smart phones, personal digital assistants, etc.) all use low-speed ISO 7816-3 interfaces to implement SIM functions, and do not have large-capacity storage functions, which have been difficult to meet the application requirements of the new generation of mobile Internet
There is an improved SIM card that solves the storage problem, but still uses the low-speed ISO7816-3 interface. The bottleneck of the transmission data rate (9.8-56kbps, half-duplex) makes the application efficiency of large-capacity storage low and difficult to promote.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0020] Embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0021] USB, SDIO / SD Memory dual-interface large-capacity storage based on MiniSD card size, network real-name identity authentication and security applications, data encryption SIM (UIM) / USIM card, and its encryption algorithm coprocessor is responsible for providing such as RSA, AES, 3DES Hardware acceleration functions such as international mainstream commercial encryption algorithms and national commercial encryption algorithms. The hardware of the composite structure adopts a single-chip controller with USB2.0 (7816-12) and SDIO / SD Memory dual-device interface as the system main controller U1, which manages the data storage in the flash memory chip U2, together with the EEPROM chip U4 Realize the SIM (UIM) / USIM function, and multiplex the corresponding electrical contacts in the SDIO / SD Memory interface J1 as USB interface contacts.

[0022] The externa...

Embodiment 2

[0031] Embodiment two is the same as embodiment one, the difference is that the size of the SD card in the embodiment is the same as the standard MicroSD card, see figure 2 , the size is the same as a standard MicroSD card due to its use of contact multiplexing.

[0032] Example circuit schematic diagram, see Figure 4 .

Embodiment 3

[0034] Embodiment three is the same as embodiment one, and the difference is that the main control chip adopted by the present invention has realized the standard ISO7816-12 protocol, and has realized a new standard SIM (UIM) / USIM size SIM based on the ISO7816-12 protocol ( UIM) / USIM card, see Figure 6 .

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PUM

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Abstract

A credible smart card with double interface and bulk storage memory mainly comprises a main controller, a flash memory chip, a commercial cipher processor, an interface and a security monitoring module. The smart card is characterized in that the main controller is equipped with a USB2.0(7816-12) interface and an SDIO / SD Memory interface, the two interfaces are composite structures, four PIN pins are provided to expand the USB function, the chip is connected with the substrate by the smart card using MCP (stacking) and a COB process, and a main control chip is a composite structure. The smart card has the advantages that one smart card can be used in a device with the SDIO / SD Memory interface, also can directly access a device with a USB host port or indirectly access to a device with the USB host port by a simple and low-cost circuit switching device, thus reducing the difficulty of software transportation, and keeping consistency of application data between different software and hardware platforms; and the smart card has the SIM (UIM) / USIM function, which expands the application range of the existing device.

Description

technical field [0001] The invention relates to an electronic storage element, in particular to a double-interface, large-capacity storage, trusted smart card. Background technique [0002] With the vigorous development of e-government, e-commerce, and electronic entertainment, it has become an inevitable trend to make extensive use of computers and the Internet for political, economic, and entertainment life. At the same time, with the increasingly powerful performance and functions of mobile handheld computing terminal equipment, and with the advent of 3G / 4G networks, mobile e-government, mobile e-commerce, and mobile electronic entertainment are also gradually emerging, which are affecting and changing people more and more deeply. work and life. The bottleneck of e-government, commerce, entertainment and mobile e-government, commerce, and entertainment lies in: [0003] 1. Local security and plug-and-play issues of desktop computers / mobile handheld computing terminals; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077
Inventor 冯晶孙海东王剑非卢伟
Owner 上海奕华信息技术有限公司