A method for unlocking an Internet of Things card and a card reading device

Abstract

The technical scheme of the invention comprises a card unfreezing method and a card reading device of an Internet of Things card, and belongs to the field of chip decryption. The method comprises thefollowing steps that a card reading device is connected with a card unfreezing tool and an Internet of Things card, the card unfreezing tool obtains and analyzes an ATR value of the Internet of Thingscard, identifies a chip type of the Internet of Things card according to the analyzed ATR value, obtains a corresponding communication protocol and communicates with the Internet of Things card basedon the communication protocol; The card unfreezing tool provides a card unfreezing confirmation interface and waits for the user to confirm whether card unfreezing operation is needed or not; If thecard needs to be unlocked, waiting for a user to input a card unlocking key and providing a card unlocking algorithm selection interface; After confirming the card unfreezing secret key and the card unfreezing algorithm, the card unfreezing tool splices the card unfreezing secret key and the card unfreezing algorithm into a card unfreezing instruction according to a preset splicing rule and sendsthe card unfreezing instruction to the Internet of Things card; And the Internet of Things card executes the card unfreezing instruction to release the card, and feeds back a card unfreezing result toa card unfreezing tool.

Description

technical field [0001] The invention relates to a method for unlocking an Internet of Things card and a card reading device, belonging to the field of chip decryption. Background technique [0002] On the one hand, on the hardware device, the popular M2M module card holder is generally fixedly connected to a special large card, which can be connected to the card reader, or connected to various test equipment through the 8-pin positive and negative connector. on the adapter line. There are the following disadvantages: [0003] 1) It is fixed on the big card, it can only be inserted into the card reader, and cannot be connected with the test equipment. [0004] 2) Connect to the adapter cable through the 8-pin positive and negative connectors. The positive and negative connectors need to be connected very carefully, which is very inconvenient and the connector is easily damaged. [0005] 3) After burning the program with the card reader, when testing the device, the module ...

AI Technical Summary

Problems solved by technology

[0003] 1) Fixed on the big card, can only be inserted into the card reader, and cannot be connected with the test equipment

[0004] 2) Connect to the adapter cable through the 8-pin positive and negative head. The connection of the positive and negative head needs to be very careful, which is very inconvenient, and the connector is easily damaged

Because the size of the M2M chip of the Internet of Things is very small, it is not easy to take it out, it is difficult to put it in, and it is easy to misplace it, which affects the test results and wastes test time.

[0006] On the other hand, in terms of the method of unlocking the card, it is currently necessary to test the IoT card. Since the IoT card is usually encrypted by the manufacturer, the IoT card must be unlocked to complete the test. However, due to the fact that the IoT card manufacturer Different, the card unlocking key and card unlocking software are usually different. When it is necessary to test the IoT card, it is necessary to obtain the key and the corresponding professional card unlocking software from the manufacturer, and then use the professional software to calculate the unlocking card. The test can only be carried out after the command is completed to solve the card; but when the IoT card to be tested is not manufactured by the same manufacturer, it is necessary to install a variety of professional card solution software, which is not only time-consuming, but also prone to errors that lead to card solution failure , chip damage

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