WO2019109640A1

WO2019109640A1 - Method and device for locking sim card

Info

Publication number: WO2019109640A1
Application number: PCT/CN2018/095194
Authority: WO
Inventors: 庄波; 王茂斌; 黄升
Original assignee: 京信通信系统（中国）有限公司; 京信通信系统（广州）有限公司; 京信通信技术(广州)有限公司; 天津京信通信系统有限公司
Priority date: 2017-12-08
Filing date: 2018-07-10
Publication date: 2019-06-13
Also published as: CN108156601A

Abstract

Embodiments of the present invention provide a method and a device for locking a SIM card. The invention solves a technical problem in which existing methods for locking a SIM card adopted by user equipment in the prior art have low security. The method comprises: receiving an instruction to lock a SIM card in a user equipment unit; generating a random PIN code for the SIM card, and using the random PIN code to update an original PIN code of the SIM card; and encrypting an authentication parameter of the SIM card, and generating an encrypted authentication parameter comprising the random PIN code and an attribute parameter of the SIM card; and storing the encrypted authentication parameter in a memory unit of the user equipment unit.

Description

Method and device for locking SIM card

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. In the application.

Technical field

The present invention relates to the field of communications, and in particular, to a method and apparatus for locking a SIM card.

Background technique

In order to gain more users and bring as much voice and data traffic as possible to the mobile operators, mobile operators have customized differentiated and personalized services and tariffs, such as wireless public telephones and monitoring terminals. In order to protect its own rights and interests, the operator stipulates that some dedicated Subscriber Identification Modules (SIM cards) can only be used on designated user equipments, so the user equipment needs to lock the SIM card.

The prior art generally uses a specified Personal Identification Number (PIN) to lock the SIM card. However, this locking mechanism is less secure.

Summary of the invention

The embodiment of the invention provides a method and a device for locking a SIM card, which are used to solve the technical problem that the prior art locking SIM card method has low security.

A first aspect of the embodiments of the present invention provides a method for locking a SIM card, which is applied to a user equipment, where the method includes:

Receiving an instruction to lock a SIM card on the user equipment;

Generating a random PIN code for the SIM card, and updating the original PIN code of the SIM card by using the random PIN code;

Encrypting the verification parameter of the SIM card to generate an encrypted verification parameter, where the verification parameter includes the random PIN code and an attribute parameter of the SIM card;

The encrypted verification parameter is stored in a storage unit of the user equipment.

In the above solution, the user equipment generates a random PIN code for the SIM card to replace the original PIN code of the SIM card, and encrypts and generates the generated random PIN code and the attribute parameters of the SIM card in the user equipment. The confidentiality of the SIM card PIN code is improved, and the difficulty of deciphering the SIM card by the illegal user equipment is increased, thereby improving the security of the user equipment locking the SIM card.

Optionally, the attribute parameters of the SIM card include an integrated circuit card identity (ICCID), an International Mobile Equipment Identity (IMEI), and an International Mobile Subscriber Identification (International Mobile Subscriber Identification). Number, IMSI), Medium Access Control (MAC) address, and Serial Number (SN).

In this manner, the complexity of the verification parameters can be further increased, and the security of locking the SIM card by the user equipment is further improved.

Optionally, when the verification parameter is the random PIN code and the ICCID, the encrypting the verification parameter of the SIM card to generate the encrypted verification parameter, including: the random PIN code The ICCID is concatenated into a string, and the string is encrypted, and the encrypted string is generated, and the encrypted string is used as the encrypted verification parameter.

In this manner, the complexity of the verification parameters can be increased, the difficulty of cracking the random PIN code can be improved, and the security of locking the SIM card by the user equipment can be further improved.

Optionally, the encrypting the verification parameter of the SIM card to generate the encrypted verification parameter includes: separately encrypting the random PIN code and the attribute parameter, and generating an encrypted verification parameter, The encrypted verification parameter includes an encrypted random PIN code and an encrypted attribute parameter.

A second aspect of the embodiments of the present invention provides a method for unlocking a SIM card, which is applied to a user equipment, the method comprising: receiving an instruction to release a lock on a SIM card on the user equipment; and a storage unit from the user equipment Obtaining the encrypted verification parameter, where the verification parameter includes a random PIN code, and an attribute parameter of the locked SIM card; decrypting the encrypted verification parameter to obtain the verification parameter; and verifying the verification parameter by using the verification parameter a SIM card on the user device; upon determining that the verification is passed, unlocking the SIM card to enable the user device to use the service provided by the SIM card.

In this manner, when the user receives the instruction to release the lock on the SIM card on the user equipment, the user uses the verification parameter to verify the SIM card, which improves the security of the user equipment to verify the SIM card.

Optionally, when the verification parameter is the random PIN code and the ICCID of the SIM card is locked, the verifying the SIM card on the user equipment by using the verification parameter includes: verifying the random PIN code and the location Whether the PIN code of the SIM card on the user equipment is consistent, and whether the ICCID of the locked SIM card is consistent with the ICCID of the SIM card on the user equipment.

In this manner, the complexity of the verification parameters can be increased, the difficulty of cracking the random PIN code can be improved, and the security of verifying the SIM card by the user equipment can be further improved.

A third aspect of the embodiments of the present invention provides a method for closing a verification function of a SIM card, which is applied to a user equipment, the method comprising: receiving an instruction to close a verification function of the SIM card; generating a user input to close the SIM card according to the instruction a prompt for verifying the password of the function; if the password is correct, obtaining the encrypted verification parameter from the storage unit of the user equipment, where the verification parameter includes a random PIN code, an attribute parameter of the locked SIM card, and the encrypted parameter The verification parameter performs a decryption process to obtain the verification parameter; the verification parameter is used to verify the SIM card on the user equipment; and when it is determined that the verification is passed, the PIN code verification function of the SIM card is closed.

In this manner, the PIN code verification function of the user equipment can be disabled, so that the user can adjust the state of the user equipment and the SIM card according to the usage scenario, thereby improving the user experience.

A fourth aspect of the embodiments of the present invention provides a device for locking a SIM card, including: a receiving unit, configured to receive an instruction for locking a SIM card on the user equipment; and a processing unit, configured to generate a random a PIN code, and updating the original PIN code of the SIM card by using the random PIN code; performing encryption processing on the verification parameter of the SIM card to generate an encrypted verification parameter, where the verification parameter includes the random PIN code, An attribute parameter of the SIM card, and a storage unit, configured to store the encrypted verification parameter in a storage unit of the user equipment.

Optionally, the attribute parameter of the SIM card includes at least one of an ICCID, an IMEI, an MSI, a MAC address, and an SN.

Optionally, the processing unit is configured to: splicing the random PIN code and the ICCID into a character string, performing encryption processing on the character string, generating an encrypted character string, and using the encrypted character The string is used as the encrypted verification parameter.

Optionally, the processing unit is configured to: perform encryption processing on the random PIN code and the attribute parameter respectively, and generate an encrypted verification parameter, where the encrypted verification parameter includes an encrypted random PIN code and encryption. After the property parameters.

A fifth aspect of the embodiments of the present invention provides an apparatus for unlocking a SIM card, including: a receiving unit, configured to receive an instruction for releasing a lock on a SIM card on the user equipment; and a processing unit, configured to be used by the user equipment Obtaining the encrypted verification parameter in the storage unit, the verification parameter includes a random PIN code, and an attribute parameter of the locked SIM card; decrypting the encrypted verification parameter to obtain the verification parameter; and verifying by using the verification parameter a SIM card on the user equipment; when it is determined that the verification is passed, the locking of the SIM card is released, so that the user equipment can use the service provided by the SIM card.

Optionally, the processing unit is configured to: verify whether the random PIN code is consistent with a PIN code of a SIM card on the user equipment, and verify an ICCID of the locked SIM card and a SIM card on the user equipment. Is the ICCID consistent?

A sixth aspect of the embodiments of the present invention provides an apparatus for turning off a verification function of a SIM card, comprising: a receiving unit, configured to receive an instruction to close a verification function of the SIM card; and a processing unit, configured to generate a user input to close the SIM according to the instruction The prompt of the password of the verification function of the card; if the password is correct, the encrypted verification parameter is obtained from the storage unit of the user equipment, the verification parameter includes a random PIN code, an attribute parameter of the locked SIM card, and the encryption The verification parameter is subjected to a decryption process to obtain the verification parameter; the verification parameter is used to verify the SIM card on the user equipment; and when it is determined that the verification is passed, the PIN code verification function of the SIM card is closed.

A seventh aspect of the embodiments of the present invention further provides an electronic device, including: at least one processor, and a memory communicably coupled to the at least one processor; wherein the memory is stored for execution by the at least one processor And the at least one processor implements the method according to the first aspect or the second aspect or the third aspect of the embodiment of the present invention by executing the instruction stored in the memory.

The eighth aspect of the embodiments of the present invention further provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions, when the computer instructions are run on a computer, causing the computer to perform the present invention Embodiments of the first or second aspect or the method of the third aspect.

DRAWINGS

1 is a schematic flowchart of a method for locking a SIM card according to an embodiment of the present invention;

2 is a schematic flowchart of a method for unlocking a SIM card according to an embodiment of the present invention;

3 is a schematic flowchart of a method for turning off a SIM card verification function according to an embodiment of the present invention;

4 is a schematic structural diagram of an apparatus for locking a SIM card according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an apparatus for unlocking a SIM card according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of an apparatus for turning off a SIM card verification function according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

The technical solutions of the present invention are described in detail below with reference to the accompanying drawings and specific embodiments. It is understood that the specific features of the embodiments and the embodiments of the present invention are the detailed description of the technical solutions of the present invention, and are not limited to the technical solutions of the present invention. In the case of no conflict, the technical features of the embodiments of the present invention and the embodiments may be combined with each other.

It should be understood that in the description of the embodiments of the present invention, the terms "first", "second" and the like are used only to distinguish the purpose of description, and are not to be understood as indicating or implying relative importance, nor can it be understood as an indication. Or suggest the order. In the description of the embodiments of the present invention, "a plurality" means two or more.

The term “and/or” in the embodiment of the present invention is merely an association relationship describing an association object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The SIM card according to the embodiment of the present invention may also be referred to as a telephone card, a smart card, etc., and is actually a smart card containing a large-scale integrated circuit, which is mainly used to register important data and information of the user, such as a digital mobile phone customer. The information, the encrypted key, and the user's phone book can be authenticated by the Global System for Mobile Communication (GSM) network client identity and the voice information of the customer during the call.

A user equipment according to an embodiment of the present invention may be a device capable of installing a SIM card and connecting to a mobile communication network through a SIM card and providing voice and/or data connectivity to the user. The user equipment can communicate with one or more core networks via a Radio Access Network (RAN). The user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket, handheld, computer built-in or in-vehicle mobile device that is wireless with The access network exchanges languages and/or data.

The PIN code involved in the embodiment of the present invention is a secret identification code for protecting the SIM card from misuse. The PIN code verification is a security measure for protecting the SIM card. If the PIN code verification function of the SIM card is enabled, the user needs to perform PIN code verification on the SIM card on the user equipment after the device is turned on or when the SIM card is inserted. If the wrong PIN code is entered multiple times, the user equipment will ask for the PIN Unlocking Key (PUK) code of the PIN code.

The embodiment of the invention provides a method for locking a SIM card, which is used to solve the technical problem that the method for locking a SIM card by a user equipment in the prior art is low. Referring to FIG. 1, the method mainly includes the following steps:

Step 101: Receive an instruction to lock a SIM card on the user equipment, generate a random PIN code for the SIM card, and update an original PIN code of the SIM card by using the random PIN code.

The implementation of the instruction for locking the SIM card on the user equipment includes, but is not limited to, the following two types: 1) when the device and the SIM card are factory-set, the vendor technician inputs the SIM on the user equipment. The card is instructed to lock; 2) after the user equipment unlocks the SIM card by using the original PIN code of the SIM card, the user equipment automatically generates an instruction to lock the SIM card on the user equipment. The specific scenario of the second type may include: after the user equipment detects that the SIM card is successfully unlocked by using the original PIN code of the SIM card, the user equipment generates an instruction for locking the SIM card on the user equipment.

In a specific implementation process, before updating the original PIN code of the SIM card, the PIN code status of the SIM card may be determined first, and the PIN code verification function of the SIM card is determined to be enabled and the PIN code of the SIM card is activated. When decrypted, the original PIN code of the SIM card is replaced.

Specifically, first, it can be determined whether the PIN code verification function of the SIM card is enabled. If the PIN code verification function of the SIM card is not enabled, the PIN code verification function of the SIM card is enabled. After determining that the PIN code verification function of the SIM card is enabled, further determining whether the PIN code error input number of the SIM card is greater than a predetermined number of times, and replacing the PIN code error input number of the SIM card when the number of PIN codes is greater than a predetermined number of times The original PIN code of the SIM card. This is because after the PIN code of the existing SIM card is input a certain number of times, the SIM card is locked, and the PIN code can no longer be used to decrypt the SIM card, and it is determined whether the PIN code of the SIM card is incorrectly input. More than a predetermined number of times, the risk of the SIM card being locked out is avoided.

Step 102: Perform encryption processing on the verification parameter of the SIM card to generate an encrypted verification parameter, where the verification parameter includes the random PIN code and an attribute parameter of the SIM card.

Specifically, the user equipment encrypts the verification parameters of the SIM card by using a reversible encryption algorithm, so that the encrypted verification parameters can be decrypted by the user equipment. The reversible encryption algorithm may be a Base64 encryption algorithm, a Tiny Encryption Algorithm (TEA), a Data Encryption Algorithm (DEA), a Triple Data Encryption Algorithm (TDEA), or an advanced encryption standard ( The combination of any one or more of the Advanced Encryption Standard (AES) algorithm, the SMS4 encryption algorithm, and the like is not specifically limited in the embodiment of the present invention.

The attribute parameter of the SIM card may be any combination of the ICCID, the IMEI, the MSI, the media access control MAC address, the SN, and the like, and is not specifically limited in the embodiment of the present invention.

Step 103: Store the encrypted verification parameter in a storage unit of the user equipment.

The storage unit may be a flash memory, a random access memory (RAM), an Erasable Programmable Read Only Memory (EPROM), etc., which is not in the embodiment of the present invention. Make specific restrictions.

In the above solution, the user equipment generates a random PIN code for the SIM card to replace the original PIN code of the SIM card, and encrypts the generated random PIN code and the attribute parameters of the SIM card, and stores the attribute parameters in the user equipment, thereby improving the SIM card. The confidentiality of the PIN code increases the difficulty of the illegal user device to decrypt the SIM card, thereby improving the security of the user device locking the SIM card.

Optionally, the authentication parameter of the SIM card is encrypted, and the encrypted verification parameter is generated. The specific implementation manner includes but is not limited to the following two types:

Method 1: splicing all the parameters included in the verification parameter into a character string, encrypting the character string, generating an encrypted character string, and using the encrypted character string as the encrypted verification parameter.

For example, when the verification parameter is the random PIN code and the ICCID, the generated random PIN code and the ICCID of the SIM card are concatenated into a character string, and the character string is encrypted to generate an encrypted character. The string is used as the encrypted verification parameter.

Manner 2: Perform encryption processing on each parameter included in the verification parameter, and generate an encrypted parameter corresponding to each parameter, where the encrypted verification parameter includes each encrypted parameter generated.

For example, when the verification parameter is the random PIN code and the ICCID, the generated random PIN code and the ICCID of the SIM card are respectively encrypted to generate an encrypted verification parameter, and the encrypted verification parameter includes The encrypted random PIN code and the encrypted ICCID.

In this manner, the complexity of the verification parameters can be increased, and the security of locking the SIM card by the user equipment is further improved.

Optionally, in a specific implementation process, the SIM card that is locked by the user terminal may be one or multiple, and is not specifically limited in this embodiment of the present invention.

For example, when the SIM card locked by the user terminal is two different SIM cards, the user terminal may separately configure a random PIN code for the above two SIM cards, and use the above-mentioned reversible encryption method to verify the verification parameters corresponding to the above two SIM cards. It is stored in the storage unit of the user terminal, so that the user terminal can decrypt any one of the above two SIM cards, thereby implementing the call accessing the Internet.

In this manner, the user terminal can lock multiple SIM cards at the same time, thereby improving the user experience.

Based on the same inventive concept, an embodiment of the present invention further provides a method for unlocking a SIM card. Referring to Figure 2, the method includes:

Step 201: Receive an instruction to release the lock on the SIM card on the user equipment.

Specifically, when the detecting module in the user equipment detects that a card is inserted in the card slot, the detecting module generates an unlocking instruction and sends the command to the receiving module, and the receiving module receives the command.

Step 202: Obtain an encrypted verification parameter from a storage unit of the user equipment, where the verification parameter includes a random PIN code and an attribute parameter of the locked SIM card.

Corresponding to the foregoing method for locking a SIM card according to an embodiment of the present invention, where the attribute parameters of the SIM card are one or more of an ICCID, an IMEI, an MSI, a media access control MAC address, and an SN.

Step 203: Perform decryption processing on the encrypted verification parameter to obtain the verification parameter.

Corresponding to the method for locking a SIM card in the embodiment of the present invention, the implementation manner of decrypting the encrypted verification parameter includes: adopting one or more encryption methods of Base64, TEA, DEA, TDEA, AES, and SMS4. The decryption method decrypts the encrypted verification parameters.

Step 204: Verify the SIM card on the user equipment by using the verification parameter; when it is determined that the verification is passed, unlock the SIM card.

Specifically, determining whether the random PIN code obtained from the storage unit of the user equipment is consistent with the PIN code stored by the verified SIM card; when the random PIN code obtained from the storage unit of the user equipment and the verified SIM card When the stored PIN codes are the same, it is determined that the verification is passed.

Further, when it is determined that the PIN codes are consistent, it is further possible to further verify whether the attribute parameters are consistent. For example, in the method for locking a SIM card according to the embodiment of the present invention, when the attribute parameter includes the IMEI, after determining that the PIN code is consistent, and determining that the verification is passed, verifying that the IMEI of the user equipment and the IMEI saved by the SIM card on the user equipment are For example, in the method for locking a SIM card according to the embodiment of the present invention, when the attribute parameter includes the IMEI, after determining that the PIN code is consistent, and after determining that the verification is passed, verifying that the SIM card on the SN user equipment of the user equipment is saved Whether the SN is consistent.

If it is determined that the verification is passed, it indicates that the SIM card in the SIM card slot of the user equipment is the SIM card previously locked by the user equipment, and the user equipment can use the services provided by the SIM card, such as calling, surfing, and the like.

In the above solution, when the user equipment detects that the SIM card slot of the user equipment has a SIM card inserted, the SIM card on the user equipment may be verified by using the stored verification parameter, if the verified SIM card is originally locked by the user equipment. The SIM card can decrypt the SIM card by using the saved verification parameter, so that the user equipment can use the service provided by the SIM card, thereby improving the security and confidentiality of the unlocking.

Optionally, corresponding to the method for locking the SIM card in the embodiment of the present invention, when the verification parameter is the random PIN code and the ICCID of the SIM card is locked, the specific implementation manners of the steps 203 and 204 include the following two types:

The first type: when the user equipment encrypts the authentication parameters of the SIM card in the manner of the foregoing mode 1, the user equipment uses the stored verification parameters to verify the SIM card on the user equipment, and the user equipment includes the user equipment from the storage unit. Obtaining the encrypted character string, and performing decryption processing on the encrypted character string to obtain the random PIN code and the ICCID; and then determining the random PIN code obtained from the storage unit of the user equipment and the verified SIM Whether the PIN code stored by the card is consistent; when the random PIN code obtained from the storage unit of the user equipment is consistent with the PIN code stored by the verified SIM card, it is determined that the verification is passed.

The second type: when the user equipment encrypts the authentication parameters of the SIM card in the manner of the foregoing mode 2, the user equipment uses the stored verification parameters to verify the SIM card on the user equipment, and the user equipment includes the user equipment from the storage unit. Obtaining the encrypted random PIN code and the encrypted ICCID, and performing decryption processing on the encrypted random PIN code and the encrypted ICCID to obtain the random PIN code and the ICCID; and then determining the storage unit from the user equipment Whether the obtained random PIN code is consistent with the PIN code stored by the verified SIM card; when the random PIN code obtained from the storage unit of the user equipment is consistent with the PIN code stored by the verified SIM card, it is determined that the verification is passed. .

In addition, in the process of verifying the SIM card on the device in any of the above manners, when it is determined that the random PIN code stored in the storage unit of the user device is consistent with the PIN code stored in the verified SIM card, It is further determined whether the random ICCID stored in the storage unit of the user equipment is consistent with the verified SIM card ICCID, and when the random ICCID stored in the storage unit of the user equipment is consistent with the verified SIM card ICCID, the verification is determined to pass.

In this manner, the SIM card is verified by using the encrypted verification parameter stored in the user equipment, which improves the security of the user equipment to unlock the SIM card. In the process of verifying the SIM card by using the verification parameter, the verification ICCID program can also be added, which can further improve the security of the user equipment to unlock the SIM card.

Optionally, before the verifying the SIM card in the SIM card slot of the user equipment by using the verification parameter, the method further includes: determining that the SIM card in the SIM card slot of the user equipment is not required to be verified by using the PUK code. .

The method for determining that the SIM card in the SIM card slot of the user equipment is not required to be verified by using the PUK code may be: determining that the PIN code error input number of the SIM card is greater than a preset number of times, the preset number of times Greater than or equal to 0. This is because after the PIN code of the existing SIM card is input a certain number of times, the SIM card is locked, and the SIM card can no longer be decrypted by using the PIN code, and the SIM card can only be decrypted by using the PUK code.

In this manner, the solution for unlocking the SIM card locked by the user equipment is further improved, and the security of the SIM card unlocked by the user equipment is further improved.

Based on the same inventive concept, an embodiment of the present invention further provides a method for turning off the verification function of the SIM card. Referring to Figure 3, the method includes:

Step 301: Receive an instruction to close the verification function of the SIM card.

Step 302: Generate, according to the instruction, a prompt for the user to input a password for closing the verification function of the SIM card;

Step 303: If the password is correct, obtain the encrypted verification parameter from the storage unit of the user equipment, where the verification parameter includes a random PIN code and an attribute parameter of the locked SIM card.

Step 304: Perform decryption processing on the encrypted verification parameter to obtain the verification parameter.

Step 305: Verify the SIM card on the user equipment by using the verification parameter; when determining that the verification is passed, turn off the PIN code verification function of the SIM card.

The instruction to disable the verification function of the SIM card in step 301 may be an instruction input by the user, or an application generated by the user equipment may be triggered by the application on the user equipment, which is not specifically limited in the embodiment of the present invention. For example, on the setting interface of the user device, click to close the menu of the verification function of the SIM card.

The specific implementation manners of the steps of obtaining the encrypted verification parameter, the decryption verification parameter, and the verification parameter verification SIM card in steps 303 to 305 may refer to step 202 in the method for unlocking the SIM in the embodiment of the present invention. The implementation of step 203 is not described here.

In the above solution, the verification function of the SIM card can be turned off, so that the SIM card can be used by other user equipments, which improves the user experience.

In the specific implementation process, those skilled in the art can provide combinations, modifications, and variations of the foregoing various technical solutions to the embodiments of the present invention, and generate various technical solutions for locking, unlocking, and closing the SIM card verification function of the SIM card. Several possible implementations of the embodiments of the present invention are listed below.

Option One:

1) Lock the SIM card:

Configuring a SIM card for the SIM card on the user equipment to replace the original PIN code of the SIM card;

Encrypting the random PIN code by using a Base64 encryption algorithm;

The encrypted random PIN code is stored in a storage unit of the user equipment.

2) Unlock the SIM card:

When the user equipment detects that the SIM card slot of the user equipment has a SIM card inserted, it is determined that the user equipment needs to unlock the SIM card;

Obtaining the encrypted random PIN code from a storage unit of the user equipment;

Decrypting the encrypted random PIN code to obtain the random PIN code;

Verifying that the random PIN code is consistent with the PIN code of the SIM card on the user equipment; if not, the unlocking fails; if they are consistent, the unlocking is successful.

3) Turn off the SIM card verification function:

Receiving an instruction to turn off the verification function of the SIM card;

Generating, according to the instruction, a prompt for the user to input a password for closing the verification function of the SIM card;

If the password is correct, the encrypted random PIN code is obtained from a storage unit of the user equipment;

Decrypting the encrypted random PIN code to obtain the random PIN code;

Verifying that the random PIN code is consistent with the PIN code of the SIM card on the user equipment; if not, the shutdown fails; if they are consistent, the shutdown is successful.

In the first solution, the user equipment generates a random PIN code for the SIM card and replaces the original PIN code of the SIM card, and then encrypts the random PIN code by using the Base64 encryption algorithm; and the user equipment needs to decrypt the encrypted PIN code after verifying the SIM card. An illegal user device that cannot be used but does not have a random PIN code and an encryption method that does not know the random PIN code cannot decrypt the SIM card. Compared with the prior art, the PIN code has higher confidentiality, and the user equipment locks the SIM card more securely.

Option II:

1) Lock the SIM card:

Obtaining an ICCID of the SIM card on the user equipment, and configuring a SIM card with a random PIN code on the user equipment to replace the original PIN code of the SIM card;

Encrypting the ICCID and the random PIN code by using a Base64 encryption algorithm;

The encrypted ICCID and the encrypted random PIN code are stored in a storage unit of the user equipment.

2) Unlock the SIM card:

Obtaining the encrypted ICCID and the encrypted random PIN code from a storage unit of the user equipment;

Decrypting the encrypted ICCID and the encrypted random PIN code respectively to obtain the ICCID and the random PIN code;

Verifying that the random PIN code obtained from the storage unit is consistent with the PIN code of the SIM card on the user equipment; if not, the unlocking fails; if they are consistent, step 225 is further performed;

Verify that the ICCID obtained from the storage unit is consistent with the ICCID of the SIM card on the user equipment; if not, the unlocking fails; if they are consistent, it is determined that the unlocking is successful.

3) Turn off the SIM card verification function:

Receiving an instruction to turn off the verification function of the SIM card;

Obtaining the encrypted ICCID and the encrypted random PIN code from a storage unit of the user equipment if the password is correct;

Verifying that the random PIN code obtained from the storage unit is consistent with the PIN code of the SIM card on the user equipment; if not, it is closed; if yes, step 235 is further performed;

Verify that the ICCID obtained from the storage unit is consistent with the ICCID of the SIM card on the user equipment; if not, the shutdown fails; if they are consistent, the shutdown is successful.

On the basis of the first scheme, the scheme 2 further increases the verification procedure of the ICCID, that is, after the user equipment successfully verifies the SIM card by using the random PIN code, it is also required to determine that the ICCID saved by the user equipment is consistent with the ICCID of the verified SIM card, and further The security of the user equipment to lock the SIM card is improved.

third solution:

1) Lock the SIM card:

Splicing the ICCID and the random PIN code into a string;

Encrypting the character string by using a Base64 encryption algorithm;

The encrypted string is stored in a storage unit of the user device.

2) Unlock the SIM card:

Obtaining the encrypted character string from a storage unit of the user equipment;

Decrypting the encrypted character string to obtain the ICCID and the random PIN code;

Verifying that the random PIN code obtained from the storage unit is consistent with the PIN code of the SIM card on the user equipment; if not, the unlocking fails; if they are consistent, step 325 is further performed;

3) Turn off the SIM card verification function:

Receiving an instruction to turn off the verification function of the SIM card;

If the password is correct, the encrypted character string is obtained from a storage unit of the user equipment;

Verifying that the random PIN code obtained from the storage unit is consistent with the PIN code of the SIM card on the user equipment; if not, the shutdown fails; if they are consistent, step 335 is further performed;

On the basis of the first scheme, scheme 3 not only adds the ICCID parameter to the verification parameters, but also splices the ICCID and the random PIN code into a string for encryption, which increases the complexity of the verification parameters and further improves the confidentiality of the PIN code. The security of the user equipment to lock the SIM card is improved.

Based on the same inventive concept, with reference to FIG. 4, an embodiment of the present invention further provides an apparatus for locking a SIM card, including:

The receiving unit 401 is configured to receive an instruction to lock the SIM card on the user equipment;

The processing unit 402 is configured to generate a random PIN code for the SIM card, and update the original PIN code of the SIM card by using the random PIN code; encrypt the verification parameter of the SIM card, and generate an encrypted Verifying parameters, the verification parameters including the random PIN code, attribute parameters of the SIM card;

The storage unit 403 is configured to store the encrypted verification parameter in the storage unit 403 of the user equipment.

Optionally, the processing unit 402 is configured to: concatenate the random PIN code and the ICCID into a character string, perform encryption processing on the character string, generate an encrypted character string, and perform the encrypted A string is used as the encrypted verification parameter.

Optionally, the processing unit 402 is configured to: perform encryption processing on the random PIN code and the attribute parameter, respectively, to generate an encrypted verification parameter, where the encrypted verification parameter includes an encrypted random PIN code, Encrypted attribute parameters.

Based on the same inventive concept, with reference to FIG. 5, an embodiment of the present invention further provides an apparatus for unlocking a SIM card, including:

The receiving unit 501 is configured to receive an instruction to release the locking of the SIM card on the user equipment;

The processing unit 502 is configured to obtain the encrypted verification parameter from the storage unit 403 of the user equipment, where the verification parameter includes a random PIN code, an attribute parameter of the locked SIM card, and decryption of the encrypted verification parameter. Obtaining the verification parameter, verifying the SIM card on the user equipment by using the verification parameter, and releasing the locking of the SIM card when determining that the verification is passed, so that the user equipment can use the SIM card service provided.

Optionally, the processing unit 502 is configured to: verify whether the random PIN code is consistent with a PIN code of a SIM card on the user equipment, and verify an ICCID of the locked SIM card and a SIM on the user equipment. Whether the card's ICCID is consistent.

Based on the same inventive concept, with reference to FIG. 6, an embodiment of the present invention further provides an apparatus for turning off a verification function of a SIM card, including:

The receiving unit 601 is configured to receive an instruction to close the verification function of the SIM card;

The processing unit 602 is configured to generate, according to the instruction, a prompt for the user to input a password for closing the verification function of the SIM card; if the password is correct, obtain the encrypted verification parameter from the storage unit of the user equipment, where the verification parameter includes a random PIN code, an attribute parameter of the locked SIM card; decrypting the encrypted verification parameter to obtain the verification parameter; verifying the SIM card on the user equipment by using the verification parameter; Turn off the PIN code verification function of the SIM card.

Based on the same inventive concept, with reference to FIG. 7, an embodiment of the present invention further provides an electronic device, including: at least one processor 701, and a memory 702 communicably connected to the at least one processor 701; wherein the memory 702 is stored There are instructions executable by the at least one processor 701, and the at least one processor 701 implements the above method in accordance with an embodiment of the present invention by executing instructions stored by the memory 702.

Based on the same inventive concept, an embodiment of the present invention further provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions, when the computer instructions are run on a computer, causing the computer The above method as in the embodiment of the present invention is performed.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

1. The user equipment generates a random PIN code for the SIM card to replace the original PIN code of the SIM card, and encrypts the generated random PIN code and the attribute parameters of the SIM card, and stores the attribute parameters in the user equipment, thereby improving the SIM card PIN code. The confidentiality increases the difficulty of the illegal user device to decipher the SIM card, thereby improving the security of the user device locking the SIM card.

2. The user equipment saves the ICCID of the SIM card locked by the user equipment in addition to the random PIN code of the SIM card locked by the user equipment; the user equipment only needs to pass the PIN code verification and the ICCID verification when verifying the SIM card. The SIM card can be used for online calls, which further improves the security of the user device locking the SIM card.

3. The SIM card verification function can be turned off, so that the SIM card can be used by other user equipments, which improves the user experience.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

A method for locking a SIM card of a user identity card is characterized in that it is applied to a user equipment, and the method includes:

Receiving an instruction to lock a SIM card on the user equipment;

Generating a random PIN code for the SIM card, and updating the original PIN code of the SIM card by using the random PIN code;

Performing an encryption process on the verification parameter of the SIM card to generate an encrypted verification parameter, where the verification parameter includes the random PIN code and an attribute parameter of the SIM card;

The encrypted verification parameter is stored in a storage unit of the user equipment.
The method according to claim 1, wherein the attribute parameters of the SIM card comprise an integrated circuit card identification code ICCID, an international mobile device identity code IMEI, an international mobile subscriber identity (MSI), a media access control MAC address, and a product sequence. At least one of the number SN.
The method according to claim 1 or 2, wherein when the verification parameter is the random PIN code and the ICCID, the verification parameter of the SIM card is encrypted to generate an encrypted Verify parameters, including:

The random PIN code and the ICCID are concatenated into a character string, and the character string is encrypted, and the encrypted character string is generated, and the encrypted character string is used as the encrypted verification parameter.
The method according to claim 1 or 2, wherein the encrypting the verification parameters of the SIM card to generate the encrypted verification parameters comprises:

The random PIN code and the attribute parameter are respectively encrypted to generate an encrypted verification parameter, and the encrypted verification parameter includes an encrypted random PIN code and an encrypted attribute parameter.
A method for unlocking a SIM card, which is applied to a user equipment, the method comprising:

Receiving an instruction to release the lock on the SIM card on the user equipment;

Acquiring the encrypted verification parameter from the storage unit of the user equipment, where the verification parameter includes a random PIN code and an attribute parameter of the locked SIM card;

Decrypting the encrypted verification parameter to obtain the verification parameter;

Verifying the SIM card on the user equipment by using the verification parameter;

Upon determining that the verification is passed, the lock on the SIM card is released such that the user device can use the service provided by the SIM card.
The method according to claim 5, wherein when said verification parameter is said random PIN code, locking an ICCID of a SIM card;

The verifying the SIM card on the user equipment by using the verification parameter includes:

Verifying whether the random PIN code is consistent with the PIN code of the SIM card on the user equipment, and verifying whether the ICCID of the locked SIM card is consistent with the ICCID of the SIM card on the user equipment.
A method for turning off a verification function of a SIM card, which is characterized in that it is applied to a user equipment, and the method includes:

Receiving an instruction to turn off the verification function of the SIM card;

Generating, according to the instruction, a prompt for the user to input a password for closing the verification function of the SIM card;

If the password is correct, the encrypted verification parameter is obtained from the storage unit of the user equipment, where the verification parameter includes a random PIN code and an attribute parameter of the locked SIM card;

Decrypting the encrypted verification parameter to obtain the verification parameter;

Verifying the SIM card on the user equipment by using the verification parameter;

When it is determined that the verification is passed, the PIN code verification function of the SIM card is turned off.
A device for locking a SIM card, comprising:

a receiving unit, configured to receive an instruction to lock a SIM card on the user equipment;

a processing unit, configured to generate a random PIN code for the SIM card, and update the original PIN code of the SIM card by using the random PIN code; encrypt the verification parameter of the SIM card to generate an encrypted verification a parameter, the verification parameter including the random PIN code, an attribute parameter of the SIM card;

And a storage unit, configured to store the encrypted verification parameter in a storage unit of the user equipment.
The apparatus according to claim 8, wherein the attribute parameter of the SIM card comprises at least one of an ICCID, an IMEI, an MSI, a MAC address, and an SN.
The device according to claim 8 or 9, wherein the processing unit is configured to:

The random PIN code and the ICCID are concatenated into a character string, and the character string is encrypted, and the encrypted character string is generated, and the encrypted character string is used as the encrypted verification parameter.
The device according to claim 8 or 9, wherein the processing unit is configured to:

The random PIN code and the attribute parameter are respectively encrypted to generate an encrypted verification parameter, and the encrypted verification parameter includes an encrypted random PIN code and an encrypted attribute parameter.
An apparatus for unlocking a SIM card, comprising:

a receiving unit, configured to receive an instruction to release the locking of the SIM card on the user equipment;

a processing unit, configured to obtain an encrypted verification parameter from a storage unit of the user equipment, where the verification parameter includes a random PIN code, an attribute parameter of the locked SIM card, and decrypting the encrypted verification parameter to obtain The verification parameter is used to verify the SIM card on the user equipment by using the verification parameter; when it is determined that the verification is passed, the locking of the SIM card is released, so that the user equipment can use the SIM card to provide service.
The apparatus of claim 12 wherein said processing unit is operative to:

Verifying whether the random PIN code is consistent with the PIN code of the SIM card on the user equipment, and verifying whether the ICCID of the locked SIM card is consistent with the ICCID of the SIM card on the user equipment.
An apparatus for turning off a verification function of a SIM card, comprising:

a receiving unit, configured to receive an instruction to close the verification function of the SIM card;

a processing unit, configured to generate, according to the instruction, a prompt for the user to input a password for closing the verification function of the SIM card; if the password is correct, obtain the encrypted verification parameter from the storage unit of the user equipment, where the verification parameter includes a random PIN code, locking attribute parameters of the SIM card; decrypting the encrypted verification parameter to obtain the verification parameter; verifying the SIM card on the user equipment by using the verification parameter; and closing when determining that the verification is passed The PIN code verification function of the SIM card.