Smart card power failure test method

Abstract

The invention discloses an intelligent card poweroff testing method. The method includes: in the process when the intelligent card conducts a transaction with a reader-writer, powering off the execution process of record instruction updating; after the intelligent card is powered on and reset, judging whether record data in the intelligent card are updated or not in the transaction; if not, sequentially executing each instruction of the transaction, and powering off the execution process of a data writing instruction according to time set by a first poweroff timer when the data writing instruction is executed; wherein after the process of executing the data writing instruction is powered off each time, circularly executing following processes: when the intelligent card is powered on and reset again, sequentially executing each instruction of the transaction, and when executing a data recovery instruction, powering off the execution process of the data recovery instruction according totime set by a second poweroff timer, and stopping circulating until the data recovery instruction is executed successfully. By the method, the problem that existing single-instruction poweroff testingcannot detect whether a poweroff protection mechanism is correct or not when the card executes date recovery is solved.

Description

technical field [0001] The invention relates to the technical field of smart cards, in particular to a smart card power-off testing method. Background technique [0002] IC card (Integrated Circuit Card) is integrated circuit card, also known as smart card, microcircuit card or microchip card, etc. IC card is widely used in banks, Identity authentication, telecommunications, public transportation, parking lot management and other fields. [0003] In IC card applications, different cardholders have different card swiping habits, and it often happens that the IC card has left the strong area of ​​the workplace before the transaction is completed. For the non-contact interface swiping card transaction IC card, it relies on the induced current generated when the chip is in the working field strength area to provide working energy. Therefore, when the card leaves the working field strength area, the field strength disappears, which will cause the IC card to execute instructions ...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a smart card power-off test method, which solves the problem that the existing single-command power-off test cannot detect whether the power-off protection mechanism is correct when the card performs data recovery

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