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Implementation method for mifare card to simulate and use large-capacity Flash storage

An implementation method and card simulation technology, applied in memory systems, data processing input/output processes, instruments, etc., to achieve the effect of reducing factory costs

Active Publication Date: 2022-05-13
广州万协通信息技术有限公司
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  • Claims
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Problems solved by technology

[0014] The object of the present invention is to provide a kind of realization method that Mifare class card simulation uses high-capacity Flash storage, thereby solves the aforementioned problems existing in the prior art

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  • Implementation method for mifare card to simulate and use large-capacity Flash storage
  • Implementation method for mifare card to simulate and use large-capacity Flash storage
  • Implementation method for mifare card to simulate and use large-capacity Flash storage

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Embodiment Construction

[0066] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0067] In this embodiment, because the path modules necessary for the SWP-HCI card simulation application include CLF, SWP, HCI, "MifareCRYPTO1 algorithm encryption and decryption module". Therefore, implementing the Mifare card storage function on the 512B (Page) Flash has relatively high performance requirements. In order to simulate the Mifare card application on the SWP-SIM, the technical solution of the present invention is proposed. The present invention mainly comprises following main contents:

[0068] 1. Put the firmware and ISR into the memory to run to improve the firmware processing ...

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Abstract

The invention provides an implementation method for simulating and using large-capacity Flash storage by Mifare cards. The Mifare 1K card has 16 * 4 = 64 Blocks in total, and 64 * 16 = 1024B; the Mifare 1K card has the advantages that when the Mifare 1K card is in a proper state, one page of a target Flash Page is erased, so that new data can be conveniently written in next time, two 1K Flash spaces are used, data information is alternately written in by taking one Flash page as a unit, each Flash writing operation command of the Mifare 1K card is written in one Flash page in advance according to the 16B + 4B data volume, power failure is prevented, and the data cannot be lost. The method has the advantages that the storage requirement and the performance requirement of the Mifare card are met on the large-capacity Flash, an EEPROM (Electrically Erasable Programmable Read-Only Memory) or small-capacity and small-page Flash hardware does not need to be additionally arranged on the SIM card, and the factory cost of simulation application of the SIM card is greatly reduced.

Description

technical field [0001] The present invention relates to the technical field of storage application of SWP-SIM cards, in particular to a method for implementing NFC-SWP-SIM card simulation using large-capacity Flash memory based on SWP-HCI protocol stack Mifare cards. Background technique [0002] In order to realize NFC access to mobile phones, the current technical solution is that CLF (Contactless Frontend, non-contact front end) is embedded in the mobile phone, based on the SWP standard of ETSI (European Telecommunications Standards Institute), using NFC-SIM chip to integrate SWP controller on the SIM card. The NFC-SIM chip includes a system control module, a SWP interface module, a SCI7816 serial interface module, a reset signal generation module, and a wake-up signal generation circuit. The contact interfaces in the card are defined as C1 (operating voltage VCC), C2 (reset RST), C3 (clock CLK), C5 (ground GND), C6 (programmable voltage), C7 (SCI7816 serial interface mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/0882G06F21/60
CPCG06F3/0652G06F3/0604G06F3/0629G06F3/0679G06F12/0882G06F21/602
Inventor 何军王亮颜昕明董文强
Owner 广州万协通信息技术有限公司
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