Efficient instruction interaction method and system compatible with PSAM cards with various rates

Abstract

The invention relates to the field of PSAM cards, and discloses an efficient instruction interaction method and system compatible with PSAM cards of various rates, and the method comprises the following steps: carrying out the power-on reset of the PSAM card, and obtaining an ATR value of the PSAM card; customizing a macro definition which is a fixed numerical memory, and storing the ATR value into the numerical memory. The macro definition is stored in the terminal device, the terminal device and the PSAM card carry out communication interaction, each interaction instruction is automatically added with the ATR value, the interaction instructions carry out interaction according to the macro definition in the transmission process, and the interaction instructions do not need to carry out polling to obtain the ATR value before each interaction. According to the method and the system, the PSAM card function is compatibly and efficiently used in various equipment forms such as Android intelligent equipment, Linux traditional equipment and single-chip microcomputer simple equipment, so that the communication interaction efficiency between the terminal equipment and the PSAM card is high, and the system stability is good.

Description

technical field [0001] The invention relates to the field of PSAM cards, in particular to an efficient command interaction method and system compatible with PSAM cards of various rates. Background technique [0002] The PSAM card is a terminal security control module, which is used to verify the legitimacy of the user card and protect the deduction behavior of the terminal equipment. For example, the national patent publication CN107784756A discloses "a control method and control device for POS machine to read and write PSAM card information". The information list between the request command and the interrupt status, when it is detected that a PSAM card is inserted, the first interrupt request command carrying the drive chip address is received, and when the first interrupt request command is judged to be valid according to the information list, enter and The first interrupt state corresponding to the first interrupt request instruction is used to control the drive chip to ...

AI Technical Summary

Problems solved by technology

However, in the prior art, terminal equipment can only communicate with PSAM cards of one rate, and there are many command interactions, often dozens of commands, and each interactive command must obtain the value of the card rate factor from the structure For communication, the efficiency of communication interaction between terminal equipment and PSAM card is very low

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