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Intelligent card and data processing method and device therefor

A data processing and smart card technology, applied in the field of smart cards, can solve problems such as occupancy timers

Inactive Publication Date: 2012-07-18
BEIJING WATCH DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of a transaction, a delay request is only made during the processing of core instructions. In the prior art, the delay request needs to rely on hardware to implement the timing function for real-time transmission, but this often requires a separate timer

Method used

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  • Intelligent card and data processing method and device therefor
  • Intelligent card and data processing method and device therefor
  • Intelligent card and data processing method and device therefor

Examples

Experimental program
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Embodiment Construction

[0029] The embodiments of the present invention provide a smart card data processing method, device and smart card, which can effectively reduce program complexity and reduce execution time of core instructions.

[0030] Below the present invention is described in detail in conjunction with specific embodiment and accompanying drawing:

[0031] Such as figure 1 As shown, it is a schematic flow diagram of the method provided by Embodiment 1 of the present invention, including the following steps:

[0032] Step 10: Receive and judge the type of communication instruction between the smart card and the terminal, and perform corresponding operations;

[0033] Wherein, after the smart card is reset and initialized, if it is judged that the identification bit of the backup area is valid, before step 10, it also includes: performing a power-off recovery operation on the last transaction, and completing the unfinished transaction due to power-off , that is; write the content of the b...

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PUM

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Abstract

The invention discloses an intelligent card and a data processing method and device therefor. The data processing method comprises the steps of: receiving and judging a type of a communication command of the intelligent card and a terminal, when the received communication command is a core command of key data necessary for processing the communication, writing a log backup term matched with the received core command into a log backup zone, setting a zone bit of the backup zone to be effective, receiving and judging the type of the next communication command; when the received communication command is a common command of a non-core command, judging whether the zone bit of the backup zone is an effective identifier; when the zone bit of the backup zone is judged as the effective identifier, writing the content of the log backup term into the corresponding target zone; clearing the effective identifier of the zone bit of the backup zone, and processing the common command; and when the zone bit of the backup zone has no effective identifier, directly processing the common command. By adopting the invention, the program complexity is effectively reduced, and the command execution time is decreased.

Description

technical field [0001] The invention relates to the technical field of smart cards, in particular to a smart card data processing method, device and smart card. Background technique [0002] At present, as a safe and easy-to-carry data computing and storage carrier, smart cards are more and more widely used in business fields with high security requirements. The cardholder saves the data in the smart card, and realizes the safe data exchange between the smart card and the application system through POS (Point Of Sale) and other equipment in the application, and then completes the corresponding transactions, such as payment, recharge, access control Wait. [0003] The existing transaction process is divided into general instructions (file selection, random number fetching, external verification, etc.) and core instructions (that is, the instruction that determines the success or failure of this transaction, the only instruction in the transaction process). Modify auxiliary ...

Claims

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Application Information

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IPC IPC(8): G06K17/00G06K19/07
Inventor 刁春强
Owner BEIJING WATCH DATA SYST
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