CN109787753B - Card releasing method and card reading device for Internet of things card - Google Patents
Card releasing method and card reading device for Internet of things card Download PDFInfo
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- CN109787753B CN109787753B CN201811523714.5A CN201811523714A CN109787753B CN 109787753 B CN109787753 B CN 109787753B CN 201811523714 A CN201811523714 A CN 201811523714A CN 109787753 B CN109787753 B CN 109787753B
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Abstract
The technical scheme of the invention comprises a card releasing method and a card reading device of an Internet of things card, belonging to the field of chip decryption; the method comprises the following steps: connecting a card releasing tool and the Internet of things card through a card reading device, acquiring and analyzing an ATR value of the Internet of things card by the card releasing tool, identifying the chip type of the Internet of things card according to the analyzed ATR value, acquiring a corresponding communication protocol and communicating with the Internet of things card based on the communication protocol; the card releasing tool provides a card releasing confirmation interface and waits for a user to confirm whether card releasing operation is needed or not; if the card needs to be unlocked, waiting for the user to input a card unlocking key and providing a card unlocking algorithm selection interface; after the unfreezing tool confirms the unfreezing key and the unfreezing algorithm, the unfreezing key and the unfreezing algorithm are spliced into an unfreezing instruction according to a preset splicing rule and sent to the Internet of things card; and the Internet of things card executes the card releasing instruction to release the card, and feeds back a card releasing result to the card releasing tool.
Description
Technical Field
The invention relates to a card releasing method and a card reading device for an internet of things card, and belongs to the field of chip decryption.
Background
On the one hand, in hardware devices, the currently popular M2M module card holder is generally fixedly connected to a special big card, and can be connected with a card reader, or connected to various adapter wires which can be connected with test equipment through 8-pin positive and negative heads. Has the following disadvantages:
1) the card reader can only be inserted into the card reader and cannot be connected with the test equipment.
2) The 8-pin positive and negative connectors are connected to an appropriate line, the connection of the positive and negative connectors needs to be very careful and inconvenient, and the connectors are also easily damaged.
3) When the card reader is used for burning programs and equipment is to be tested, the module is taken out of the card seat of the special large card and then put into the card seat with the positive and negative connecting proper lines. Because the size of the M2M chip of the internet of things is very small, the chip is not easy to take out and difficult to put in, and the chip is easy to misplace, the test result is influenced, and the test time is also very wasted.
On the other hand, in the unfreezing method, the Internet of things card is required to be tested at present, the Internet of things card is required to be unfreezed to finish the test as the Internet of things card is usually encrypted by manufacturers, but the unfreezing key and the unfreezing software are usually different as the manufacturers of the Internet of things card are different, when the Internet of things card is required to be tested, the key and corresponding professional unfreezing software are required to be obtained from a generator, then the professional software is used for calculating an unfreezing instruction to finish the unfreezing, and then the test can be carried out; however, when the internet of things card to be tested is not manufactured by the same manufacturer, a plurality of professional unfreezing software needs to be installed, which not only consumes time, but also causes unfreezing failure and chip damage due to error.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a universal method for releasing the Internet of things card, which can release the Internet of things cards generated by different manufacturers by using a card releasing tool without installing a plurality of card releasing software, can release the cards one by one only after inputting a card releasing key and selecting a card releasing algorithm before releasing the cards in the card releasing process, does not need multiple communication calculations, and is convenient and simple; in addition, the card reading device for connecting the Internet of things card and the card releasing tool improves the connection mode of the card seat of the Internet of things card and the test equipment or the card reader, the Internet of things card does not need to be taken out of the module for reinstallation in the card releasing and testing process, the error risk caused by reverse placement or misplacement of the cocaine chip of the Internet of things is reduced, and the time cost is also saved.
The technical scheme adopted by the invention for solving the problems is that on one hand, the method for releasing the Internet of things card comprises the following steps:
connecting a card releasing tool and the Internet of things card through a card reading device, acquiring and analyzing an ATR value of the Internet of things card by the card releasing tool, identifying the chip type of the Internet of things card according to the analyzed ATR value, acquiring a corresponding communication protocol and communicating with the Internet of things card based on the communication protocol;
the card releasing tool provides a card releasing confirmation interface and waits for a user to confirm whether card releasing operation is needed or not; if the card needs to be unlocked, waiting for the user to input a card unlocking key and providing a card unlocking algorithm selection interface;
after the unfreezing tool confirms the unfreezing key and the unfreezing algorithm, the unfreezing key and the unfreezing algorithm are spliced into an unfreezing instruction according to a preset splicing rule and sent to the Internet of things card;
and the Internet of things card executes the card releasing instruction to release the card, and feeds back a card releasing result to the card releasing tool.
Further, the acquiring a communication protocol according to the analyzed ATR value and communicating with the internet of things card based on the communication protocol includes: if the analyzed ATR value indicates that the Internet of things card supports a plurality of communication protocols, the card releasing tool provides a communication protocol selection interface and waits for a user to select a communication protocol to be used; after the communication protocol is confirmed, the card releasing tool performs corresponding communication parameter configuration according to the selected communication protocol and the analyzed ATR value, and normal communication between the card releasing tool and the Internet of things is established.
Further, the said tool provides the card releasing and confirms the interface, before waiting for the user to confirm whether to need to carry on the operation of card releasing, still include: and the unfreezing tool judges whether the Internet of things card is unfreezed or not according to the analyzed ATR value, if the Internet of things card is unfreezed, corresponding prompt is carried out and the unfreezing is finished, and if not, an unfreezing confirmation interface is provided.
Further, the card releasing secret key and the card releasing algorithm correspond to the chip model of the internet of things card, and the card releasing algorithm is preset in the card releasing tool according to the chip model of the internet of things card.
Further, the said unfreezing tool confirms the unfreezing key and unfreezing algorithm, including: the format of the card-unlocking key input by the user is checked.
Further, the card-releasing key and the card-releasing algorithm are assembled into a card-releasing instruction according to a preset assembling rule, wherein the assembled card-releasing instruction conforms to a private rule defined by an Internet of things card chip manufacturer following an APDU rule.
Further, the internet of things card executes the card releasing instruction to release the card, and feeds back a card releasing result to the card releasing tool, including: the Internet of things card executes the acquired card releasing instruction, and if the execution is successful, the ATR value of the Internet of things card is modified; analyzing the ATR value again, judging whether the card is successfully released according to the card releasing position of the ATR value, and returning a corresponding state identifier to the card releasing tool according to a judgment result; and the unfreezing tool performs corresponding operation according to the corresponding identification value.
The other aspect of the technical scheme adopted by the invention for solving the problems is a card reading device which can be used for connecting a card releasing tool and an internet of things card so as to realize the card releasing method of the internet of things card; the card reading device comprises a card holder and an adaptive line, wherein the card holder is provided with an Internet of things card slot used for connecting and fixing an Internet of things card, the inside of the Internet of things card slot comprises contacts used for being correspondingly connected with pins of an Internet of things card chip, the contacts are connected with the universal card slot, the adaptive line comprises a universal joint, an adaptive joint and a connecting line between the universal joint and the adaptive line, the universal joint is used for being in matched connection with the universal card slot, and the adaptive joint is used for being in matched connection with a test device or a card reader interface.
Further, the adapter may be embedded in a card base to adapt a test device or a card reader interface.
Further, the adaptation lines include a plurality of models.
The invention has the beneficial effects that:
on one hand, according to the method for releasing the card of the Internet of things card, the card releasing tool does not need to communicate with the Internet of things card for many times, so that card releasing failure caused by communication packet loss and other problems is reduced, and instruction errors caused by assembling instructions for many times are reduced by releasing the card with one key; the unfreezing tool is suitable for various internet of things cards, error risks caused by using various unfreezing software are avoided, troubles are reduced, and time is saved.
On the other hand, the card reading device improves the connection mode of the Internet of things card and other equipment devices, is simple to use and easy to operate, and reduces the risk of connection errors.
Drawings
Fig. 1 is a step diagram of a method for releasing an internet of things card according to an embodiment of the invention;
fig. 2 is a flowchart of a method for releasing the internet of things card according to an embodiment of the present invention;
FIG. 3a is a left side view of a card socket of a card reading device according to an embodiment of the invention;
FIG. 3b is a front view of a card socket of the card reading device according to an embodiment of the invention;
FIG. 3c is a top view of a card socket of a card reading device according to an embodiment of the invention;
FIG. 4 is a schematic illustration of a partial model of an adapter wire of a card reading device according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a card base according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. As used in this disclosure, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The use of any and all examples, or exemplary language ("e.g.," such as "or the like") provided herein, is intended merely to better illuminate embodiments of the invention and does not pose a limitation on the scope of the invention unless otherwise claimed.
Referring to fig. 1, a method for releasing an internet of things card includes the following steps:
connecting a card releasing tool and the Internet of things card through a card reading device, acquiring and analyzing an ATR value of the Internet of things card by the card releasing tool, identifying the chip type of the Internet of things card according to the analyzed ATR value, acquiring a corresponding communication protocol and communicating with the Internet of things card based on the communication protocol;
the card releasing tool provides a card releasing confirmation interface and waits for a user to confirm whether card releasing operation is needed or not; if the card needs to be unlocked, waiting for the user to input a card unlocking key and providing a card unlocking algorithm selection interface;
after the unfreezing tool confirms the unfreezing key and the unfreezing algorithm, the unfreezing key and the unfreezing algorithm are spliced into an unfreezing instruction according to a preset splicing rule and sent to the Internet of things card;
and the Internet of things card executes the card releasing instruction to release the card, and feeds back a card releasing result to the card releasing tool.
Further, according to the communication agreement that obtains of analytic ATR value and based on communication agreement and thing networking card carry out the communication, include: if the analyzed ATR value indicates that the Internet of things card supports a plurality of communication protocols, the card releasing tool provides a communication protocol selection interface and waits for a user to select a communication protocol to be used; after the communication protocol is confirmed, the card releasing tool performs corresponding communication parameter configuration according to the selected communication protocol and the analyzed ATR value, and normal communication between the card releasing tool and the Internet of things is established.
Further, the unfreezing tool provides an unfreezing confirmation interface, and before waiting for the user to confirm whether the unfreezing operation needs to be performed, the method further comprises the following steps: and the unfreezing tool judges whether the Internet of things card is unfreezed or not according to the analyzed ATR value, if the Internet of things card is unfreezed, corresponding prompt is carried out and the unfreezing is finished, and if not, an unfreezing confirmation interface is provided.
Further, the card releasing secret key and the card releasing algorithm correspond to the chip type of the Internet of things card, and the card releasing algorithm is preset in the card releasing tool according to the chip type of the Internet of things card.
Further, the stuck freeing tool confirms the stuck freeing key and the stuck freeing algorithm, and comprises the following steps: the format of the card-unlocking key input by the user is checked.
And further splicing the card-releasing secret key and the card-releasing algorithm into a card-releasing instruction according to a preset splicing rule, wherein the spliced card-releasing instruction conforms to a private rule defined by an Internet of things card chip manufacturer following an APDU rule.
Further, the internet of things card executes the card releasing instruction to release the card, and feeds back a card releasing result to the card releasing tool, including: the Internet of things card executes the acquired card releasing instruction, and if the execution is successful, the ATR value of the Internet of things card is modified; analyzing the ATR value again, judging whether the card is successfully released according to the card releasing position of the ATR value, and returning a corresponding state identifier to the card releasing tool according to a judgment result; and the unfreezing tool performs corresponding operation according to the corresponding identification value.
Referring to fig. 2, a flowchart of a method for releasing an internet of things card according to an embodiment of the present invention is shown. The unfreezing tool is an intelligent device, such as a computer, provided with a general unfreezing program. Because the card releasing program needs to communicate with the internet of things card chip when releasing the card, the internet of things module is firstly installed in the internet of things card slot of the card reading device card holder to read the data of the internet of things card chip, the proper line with the proper model is selected, the universal joint of the proper line is inserted into the universal card slot of the card reading device card holder, the adaptive joint of the proper line is inserted into the card reader interface, and then the card reader is inserted into the computer to complete the connection of the card releasing tool and the internet of things card. The method comprises the steps that an unfreezing program reads and analyzes an ATR value of an Internet of things card chip at first, the ATR value is mainly used for identifying a specific chip model, different unfreezing keys are used for different chips, the same card is different in ATR value after being decrypted and ATR value not decrypted, so that the ATR value must be received at first, and the chip model and whether the chip is unfreezed or not are read and judged. The ATR value also specifies a communication protocol, and the card releasing program establishes communication with the Internet of things card according to the communication protocol; specifically, some internet of things cards may support multiple communication protocols, and the card-releasing program prompts the user to select a desired communication protocol.
Because the internet of things card is generally encrypted to prevent malicious tampering of data, when the internet of things card is to be tested, the internet of things card can be burned with a test program only after being unlocked by using the unlocking software, the traditional unlocking software is usually provided by manufacturers of the internet of things card, and different manufacturers can unlock the internet of things card by using different unlocking software; when the card is unlocked, the card must communicate with the Internet of things card chip to send an instruction back and forth, and the instruction needs to be assembled according to a certain rule. In the traditional key unfreezing, an instruction needs to be assembled according to a key by the user, then the instruction is sent to the Internet of things card chip, the next instruction is calculated according to a return value and an algorithm, the next instruction is sent to the Internet of things card chip, the calculation is carried out at least 2-3 times, and errors are easy to occur when the instruction is assembled. In the general card-releasing program, rules of assembly instructions and various card-releasing algorithms are built in, when a user needs to release a certain internet of things card, only a card-releasing key acquired from a manufacturer needs to be input in the program, in order to save time, the card-releasing program can immediately check whether the format of the card-releasing key conforms to the correct key format after the card-releasing key is input, and if the format is incorrect, subsequent operation is not carried out and the user is prompted to input the card-releasing key again; the method comprises the steps that a card releasing program can automatically identify the model of a chip under the normal condition, a user who cannot identify the model of the chip can automatically select the model of the chip, the card releasing program automatically finds a corresponding card releasing algorithm according to the model of the chip and assembles a card releasing instruction which accords with APDU according to an instruction assembling rule, after the card releasing instruction is obtained, the card releasing program pops up a confirmation frame for confirming whether to release the card for the user to confirm, if the user selects the card releasing, the obtained card releasing instruction is sent to an Internet of things network card chip to release the card, otherwise, the card releasing is finished, the card releasing confirmation prompt can be carried out before a card releasing key is input, and the card releasing instruction is directly sent to the chip or secondary confirmation is carried out after the card. The list here is an unfreezing instruction splicing rule and an unfreezing instruction:
the RSP-DES-ECB (RAND, AuthKey) gets the return value, RAND is a random number, AuthKey is a key, and the algorithm is DES-ECB.
Using the calculated RSP as a data segment of the instruction to obtain an assembled instruction example: CLA INS P1P 2 Lth 00 XX 000010 RSP;
the Internet of things card chip executes the received card releasing instruction, if the card releasing instruction can be correctly executed, the ATR value is modified, an execution success state identifier is returned, and the card releasing program completes card releasing and exits; if the card releasing instruction can not be executed correctly, the execution failure state is returned, and the card releasing program re-analyzes the ATR value and restarts the card releasing. The internet of things card after being unlocked can be directly connected with test equipment, computer equipment and the like for testing, burning and the like without being unlocked.
Referring to fig. 3a, fig. 3b, fig. 3c, fig. 4 and fig. 5, a card reading device may be used to connect a card releasing tool and an internet of things card, so as to implement the card releasing method of the internet of things card; the card reading device comprises a card seat and an adaptation line, wherein the card seat is provided with an Internet of things card slot used for connecting and fixing an Internet of things card, contacts used for being correspondingly connected with PINs of an Internet of things card chip are arranged in the Internet of things card slot, the contacts are connected with a universal card slot through PIN needles, the number of the PIN needles corresponds to the number of the contacts, such as 6 or 8, the adaptation line comprises a universal joint, an adaptation joint and a connecting line between the two joints, the connecting line is preferably a soft FPC connecting line, the universal joint is used for being in matched connection with the universal card slot, and the adaptation joint is used for being in matched connection with a testing device or a card reader interface.
The universal card slot adopts a 2FF type SIM card universal card slot, the universal connector preferably adopts a 2FF type connector, the adapter connector comprises a plurality of types, fig. 4 lists part of types, such as iPhone adapter, 2FF type interface adapter, 3FF type interface adapter and 4FF type interface adapter, in order to meet the wiring requirement, the adapter connector of the same type may be further divided into a plurality of wiring modes, such as four wiring modes of ABCD in 4FF type in fig. 4, and when in use, a proper adapting line is selected according to the interface of a test device or a card reader and the like.
Sometimes there is no suitable adapter wire at hand and it is also possible to embed an adapter plug into the card base of the SIM to adapt the test equipment or the card reader interface, one card base being shown in fig. 5.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.
Claims (10)
1. A method for releasing the Internet of things card is characterized by comprising the following steps:
connecting a card releasing tool and the Internet of things card through a card reading device, acquiring and analyzing an ATR value of the Internet of things card by the card releasing tool, identifying the chip type of the Internet of things card according to the analyzed ATR value, acquiring a corresponding communication protocol and communicating with the Internet of things card based on the communication protocol;
the card releasing tool provides a card releasing confirmation interface and waits for a user to confirm whether card releasing operation is needed or not; if the card needs to be unlocked, waiting for the user to input a card unlocking key and providing a card unlocking algorithm selection interface;
after the unfreezing tool confirms the unfreezing key and the unfreezing algorithm, the unfreezing key and the unfreezing algorithm are spliced into an unfreezing instruction according to a preset splicing rule and sent to the Internet of things card;
and the Internet of things card executes the card releasing instruction to release the card, and feeds back a card releasing result to the card releasing tool.
2. The method for releasing the card of the internet of things card according to claim 1, wherein the obtaining of the communication protocol according to the analyzed ATR value and the communication with the internet of things card based on the communication protocol comprises:
if the analyzed ATR value indicates that the Internet of things card supports a plurality of communication protocols, the card releasing tool provides a communication protocol selection interface and waits for a user to select a communication protocol to be used;
after the communication protocol is confirmed, the card releasing tool performs corresponding communication parameter configuration according to the selected communication protocol and the analyzed ATR value, and normal communication between the card releasing tool and the Internet of things is established.
3. The method for releasing the network card of the internet of things according to claim 1, wherein the card releasing tool provides a card releasing confirmation interface, and before waiting for the user to confirm whether the card releasing operation is required, the method further comprises:
and the unfreezing tool judges whether the Internet of things card is unfreezed or not according to the analyzed ATR value, if the Internet of things card is unfreezed, corresponding prompt is carried out and the unfreezing is finished, and if not, an unfreezing confirmation interface is provided.
4. The method for releasing the card of the internet of things card according to claim 1, wherein the card releasing key and the card releasing algorithm correspond to a chip type of the internet of things card, and the card releasing algorithm is preset in a card releasing tool according to the chip type of the internet of things card.
5. The method of claim 1, wherein the card-releasing tool determines a card-releasing key and a card-releasing algorithm, and comprises:
the format of the card-unlocking key input by the user is checked.
6. The method for freeing the internet protocol card of claim 1, wherein the method comprises the following steps: and splicing the card-releasing secret key and the card-releasing algorithm into a card-releasing instruction according to a preset splicing rule, wherein the spliced card-releasing instruction conforms to a private rule defined by an Internet of things card chip manufacturer following an APDU rule.
7. The method for releasing the network card of the internet of things according to claim 1, wherein the network card executes the card releasing instruction to release the card, and feeds back a card releasing result to a card releasing tool, comprising:
the Internet of things card executes the acquired card releasing instruction, and if the execution is successful, the ATR value of the Internet of things card is modified;
analyzing the ATR value again, judging whether the card is successfully released according to the card releasing position of the ATR value, and returning a corresponding state identifier to the card releasing tool according to a judgment result;
and the unfreezing tool performs corresponding operation according to the corresponding identification value.
8. A card reading device for performing the method of any one of claims 1 to 7, and being capable of connecting a card releasing tool and an internet of things card, wherein: the test card comprises a card seat and an adaptive line, wherein the card seat is provided with an Internet of things card slot for connecting and fixing an Internet of things card, the inside of the Internet of things card slot comprises contacts for correspondingly connecting with pins of an Internet of things card chip, the contacts are connected with the general card slot, the adaptive line comprises a general connector, an adaptive connector and a connecting line between the two connectors, the general connector is used for being matched and connected with the general card slot, and the adaptive connector is used for being matched and connected with a test device or a card reader interface.
9. The card reading apparatus according to claim 8, wherein: the adapter may be embedded in a card base to adapt a test device or a card reader interface.
10. The card reading apparatus according to claim 8, wherein: the adapter wire includes various models.
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