CN114490452A - Data management method, device and control chip for embedded flash memory - Google Patents

Abstract

The embodiment of the application provides a data management method, a device and a control chip for an embedded flash memory, wherein the method comprises the following steps: obtaining effective data to be stored and an encryption configuration instruction; determining the position insertion logic of the current verification data according to the encryption configuration instruction, and generating the verification data based on Hamming codes by using the position insertion logic and the effective data; inserting the check data into the valid data according to the position insertion logic to obtain encrypted combined data; and storing the encrypted combined data and the encryption related information in the embedded flash memory in an associated manner. The method can greatly improve the confidentiality of the stored data and the like by inserting the logic into the position of the check data in the Hamming code to perform configurable operation.

Description

Data management method, device and control chip for embedded flash memory

technical field

The present application relates to the technical field of data storage, and in particular, to a data management method, device and control chip for embedded flash memory.

Background technique

Flash (flash memory) as a non-volatile memory, for example, can be used to store program codes, and can also be used to save data, etc. It is widely used in various occasions, including in the design of microprocessor (MCU) chips, Also known as embedded flash memory (ie eFlash) at this time. The stability of data in eFlash and the security of data need more effective protection. Existing encryption methods usually include Hamming code encryption, etc. However, when the Hamming code is encrypted, the position of the encrypted check code is always fixed. Once the data is stolen, it is easy to be decrypted, resulting in low data security.

SUMMARY OF THE INVENTION

In view of this, embodiments of the present application provide a data management method, device and control chip for embedded flash memory.

In a first aspect, an embodiment of the present application provides a data management method for an embedded flash memory, including:

Obtain valid data to be stored and encrypted configuration instructions;

Determine the position insertion logic of the verification data this time according to the encryption configuration instruction, and use the position insertion logic and the valid data to generate the verification data based on Hamming coding;

Inserting the check data into the valid data according to the position insertion logic to obtain encrypted combined data;

The encrypted combined data is stored in the embedded flash memory in association with the encryption related information.

In some embodiments, the data management method for embedded flash memory further includes:

Read the encrypted combination data and the associated encryption related information, and determine the position insertion logic corresponding to the encrypted combination data according to the encryption related information;

Perform Hamming decryption on the encrypted combined data according to the position insertion logic to obtain the valid data.

In some embodiments, the position insertion logic includes the insertion position of each check code in the check data in the encrypted combined data to be solved, and the position insertion logic and the valid data are based on Hamming encoding to generate the verification data, including:

According to the insertion position of each check code, obtain the encrypted combined data to be solved composed of the combination of multiple unknown check codes and the valid data;

Obtain the binary index of each data bit in the encrypted combined data to be solved;

According to the rule that only 1 unknown check code is included in each grouping, the encrypted combined data to be solved is grouped based on the binary index to obtain multiple groups of groups;

The values of the unknown check codes in each group are determined according to the rule that the number of "1" in each group is an even number, and the check codes with known values together constitute the check data.

In some embodiments, no more than two check codes are inserted continuously at the same position for each type of position insertion logic; the position insertion logic does not include inserting each check code into the corresponding data bits of 2 ^N respectively, wherein, N is an integer greater than or equal to 0.

In some embodiments, the number of bits of the verification data and the number of bits of valid data to be stored satisfy the following relationship:

2 ^r >=n+1;

In the formula, r represents the minimum number of digits of the required check code, and n represents the number of digits of the valid data.

In some embodiments, the correspondence between the insertion logic at different positions of the verification data and the different encryption configuration instructions is implemented by a programmable logic device.

In a second aspect, an embodiment of the present application further provides a data management device for an embedded flash memory, including:

The acquisition module is used to acquire valid data to be stored and encrypted configuration instructions;

A verification generation module, configured to determine the position insertion logic of the verification data this time according to the encryption configuration instruction, and generate the verification data based on the Hamming coding using the position insertion logic and the valid data;

an encryption and reorganization module, configured to insert the verification data into the valid data according to the position insertion logic to obtain encrypted combined data;

The storage module is used for storing the encrypted combined data and the encryption related information in the embedded flash memory in association.

In some embodiments, the data management apparatus for embedded flash memory further includes:

a reading module, configured to read the encrypted combined data and the encrypted related information, and determine the position insertion logic corresponding to the encrypted combined data according to the encrypted related information;

A data decryption module, configured to perform Hamming decryption on the combined data according to the position insertion logic to obtain the valid data.

In a third aspect, embodiments of the present application further provide a control chip, including an embedded flash memory, a memory, and a processor, where the embedded flash memory is used to access encrypted combined data, the memory is used to store a computer program, and the computer When the program runs on the processor, the control chip executes the above-mentioned data management method for embedded flash memory.

In a fourth aspect, an embodiment of the present application further provides a readable storage medium, which stores a computer program, and when the computer program is executed on a processor, implements the above-mentioned data management method for an embedded flash memory.

The embodiments of the present application have the following beneficial effects:

The data management method for an embedded flash memory according to the embodiment of the present application obtains valid data to be stored and an encrypted configuration instruction; then determines the location of the current verification data according to the encrypted configuration instruction to insert logic, and uses the location to insert a logic sum The valid data is based on Hamming coding, and the verification data is generated; finally, the verification data is inserted into the valid data according to the position insertion logic to obtain encrypted combined data; and the encrypted combined data is stored in association with the encryption related information into the embedded flash. The method performs a configurable operation on the position insertion logic of the check data in the Hamming coding, and still encrypts the data based on the principle of Hamming coding, so that the original Hamming coding logic does not need to be modified. Since the check code is no longer the original fixed position, it will increase the difficulty of cracking during the decryption process, so the confidentiality of the stored data can be greatly improved, and the reliability of data writing and reading can be more effectively guaranteed.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following drawings will briefly introduce the drawings that need to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 shows a first flowchart of a data management method for an embedded flash memory according to an embodiment of the present application;

Fig. 2 shows the flow chart of the verification data generation of the embodiment of the present application;

FIG. 3 shows a system architecture diagram of a data management method for embedded flash memory according to an embodiment of the present application;

FIG. 4 shows a second flowchart of a data management method for an embedded flash memory according to an embodiment of the present application;

FIG. 5 shows a first structural schematic diagram of a data management apparatus for embedded flash memory according to an embodiment of the present application;

FIG. 6 shows a second schematic structural diagram of a data management apparatus for an embedded flash memory according to an embodiment of the present application;

FIG. 7 shows a schematic structural diagram of a control chip according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

Hereinafter, the terms "comprising", "having" and their cognates, which may be used in various embodiments of the present application, are only intended to denote particular features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the presence of or adding one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing or the possibility of a combination of the foregoing.

Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this application belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized or overly formal meaning, unless explicitly defined in the various embodiments of the present application.

In the existing Hamming code encoding algorithm, each check code is sequentially inserted into the data bits corresponding to the N power of 2 (ie, 2 ^N ), where N is an integer greater than or equal to 0. Specifically, the first bit (ie, corresponding to 2 ⁰ ), the second bit (ie, corresponding to 2 ¹ ), the fourth bit (ie, corresponding to 2 ² ), the eighth bit (ie, corresponding to 2 ³ ) and the 16th bit in the combined data Bits (that is, corresponding to 2 ⁴ ) are inserted into each of these positions with a check code. These check codes can be used to encrypt the valid data, and can also correct any 1-bit error data. It can be seen that the existing Hamming code encoding is to insert the check code at a fixed position, which leads to the fact that once other people obtain the encrypted combined data, the original valid data can be easily recovered, thereby stealing the corresponding valid data. information.

To this end, an embodiment of the present application proposes a data management method for embedded flash memory, which is based on the principle of Hamming code encoding, and performs configurable operations on the position insertion logic of the verification data, so that the verification data is no longer It is fixed at the data bit corresponding to the N power of 2, but can be specified by the user or can be dynamically configured. In the decryption process in this way, although the Hamming code is also used for decryption, since other people do not know the specific location of these check codes, it will greatly increase the difficulty of decryption. That is, by improving the existing Hamming code encoding, it can be improved. Confidentiality of stored data. The data management method for the embedded flash memory will be described in detail below.

Referring to FIG. 1 , an embodiment of the present application proposes a data management method for an embedded flash memory, which can be applied to data access such as a microprocessor (MCU) chip, a system-on-chip (SoC) chip, and the like.

Exemplarily, the data management method for embedded flash memory includes steps S110-S140:

S110: Obtain valid data to be stored and an encrypted configuration instruction.

In this embodiment, based on the principle of Hamming code encoding, the insertion position of the check data in the Hamming code is configurable, and then the configuration is performed by using the insertion position logic that is different from the rules of the insertion position of the traditional Hamming code encoding. Re-encoding to generate these check data.

There is a one-to-one correspondence between the above-mentioned encryption configuration instruction and the position insertion logic of the verification data used for encrypting valid data, that is, one type of position insertion logic corresponds to one encryption configuration instruction. For example, a control chip can store multiple positions of insertion logic, and the user can choose one of them for encrypted storage according to storage needs, or change the other logic for encryption at regular intervals, so as to improve the Security of stored data, etc. It can be understood that the above-mentioned corresponding relationship can be stored in advance, so that when the actual valid data is encrypted, the position insertion logic of the current storage operation can be determined according to the input encryption configuration instruction.

For example, in one embodiment, the number of bits of the configuration field in the encrypted configuration instruction can be determined according to the number of position insertion logics. For example, when there are 3 or 4 kinds of position insertion logics, the configuration field sel can use two bits (ie sel[1:0]) to represent, for example, sel=00, select the first position to insert the logic; when sel=01, select the second position to insert the logic; and so on. It can be understood that if there are at least 5 kinds of position insertion logic, the configuration field can be represented by more bits.

It can be understood that the number of bits of the verification data in this embodiment is related to the number of bits of the valid data to be stored. For example, in one embodiment, the number of bits of the check data and the number of bits of valid data to be stored may satisfy the following relationship:

2 ^r >=n+1;

In the formula, r represents the minimum number of digits of the required check code, and n represents the number of digits of valid data.

For example, when the valid data is 16 bits, at least 5 check codes are required; when the valid data is 32 bits, at least 6 check codes are required; when the valid data is 64 bits, at least 9 check codes are required code verification, etc. It can be understood that the number of bits of valid data is not limited to an even number, and may also be an odd number such as 7 bits, 13 bits, 15 bits, and 31 bits, which is not limited here. It can be understood that the total number of bits of the encrypted combined data is equal to the sum of the number of bits of the valid data and the minimum number of bits of the required check code.

S120: Determine the position insertion logic of the current verification data according to the encryption configuration instruction, and generate verification data based on Hamming coding by using the position insertion logic and the valid data.

Exemplarily, since there is a corresponding relationship between the encryption configuration instruction and the position insertion logic of the verification data, after the encryption configuration instruction is known, the current position insertion logic can be determined by querying the corresponding relationship. Furthermore, according to the insertion positions of these check codes, the specific value of each check code can be calculated by further utilizing the coding principle of Hamming code.

For example, if the number of digits of the valid data to be stored is 32, and the number of digits of the verification data is 6, for the 38-bit combination data to be solved, the set insertion logic at different positions of the verification data can include a variety of, for example , 8 are listed below, each of which is different.

The first scheme: insert a check code in the 1st, 2nd, 11th, 12th, 21st and 22nd bits respectively; the second scheme: insert one bit in the 3rd, 4th, 13th, 14th, 23rd and 24th bits respectively Check code; the third scheme: insert a check code in the 5th, 6th, 15th, 16th, 25th and 26th respectively; the fourth scheme: in the 7th, 8th, 17th, 18th, 27th and 28th Insert a check code respectively; the fifth scheme: insert a check code in the 9th, 10th, 19th, 20th, 29th and 30th respectively; the sixth scheme: in the 11th, 12th, 21st, 22nd, 31 and 32 bits are inserted with a check code respectively; the seventh scheme: insert a check code in the 13th, 14th, 23rd, 24th, 33rd and 34th bits respectively; the eighth scheme: in the 15th, 16th, 25, 26, 35 and 36 bits are respectively inserted with a check code.

It can be understood that the above-mentioned 8 kinds of position insertion logics that are continuously inserted in two adjacent positions of the interval are only some feasible examples. In addition, a check code can also be inserted after the corresponding data bits in each interval, etc., That is, discontinuous insertion, etc., can be randomly selected by the user or specified as required, which is not limited here. Usually, the logic of each position insertion does not exceed two consecutive check codes at the same position. In addition, these position insertion logic usually does not include inserting the check codes of each bit into the data bits corresponding to 2 ^N respectively, that is, it will not be the same as the traditional position insertion rules.

The correspondence between the insertion logic at different positions of the above-mentioned verification data and different encryption configuration instructions can be implemented by software or hardware. For example, if it is implemented by hardware, a programmable logic device can be used. Logic array (PLA), etc. to realize inputting different encryption configuration instructions to select different positions to insert logic.

In an embodiment, as shown in FIG. 2 , the value-taking process of each check code in the check data may include the following sub-steps S210-S240:

S210, according to the insertion position of each check code, obtain the encrypted combined data to be solved composed of a combination of a plurality of unknown check codes and valid data.

S220: Obtain the binary index of each data bit in the encrypted combined data to be solved.

S230: Group the encrypted combined data to be solved based on the binary index according to the rule that each group of groups contains only one unknown check code to obtain multiple groups of groups.

S240: Determine the values of the unknown check codes in each group according to the rule that the number of "1"s in each group is an even number, and the check codes with known values together constitute the check data.

As shown in Figure 3, taking an encryption scenario of 32-bit valid data as an example, it can be determined that the minimum number of digits of the check code data is 6 digits. It can be seen that the number of digits of the encrypted combination data to be solved is 38 digits in total. Here, it is expressed as D0 to D37. The second scheme in the above-mentioned eight position insertion logic is explained, that is, an unknown check code X is inserted into the positions of D2, D3, D12, D13, D22 and D23 respectively, then an encryption to be solved can be obtained. Combine data.

Then, according to the binary index of each data bit, that is, the serial number of each data bit is represented by multiple binary digits. Since the number of bits of the combined data is 38 bits, it can be represented by six binary bits, for example, the binary number of D0 The index is 000001, the binary index of D1 is 000010, and so on, the binary index of D38 is 100100.

Therefore, these binary indexes are divided according to the rule that each group of groups contains only 1 unknown check code. For example, for the first group P1, the binary indexes of the data bits contained in it satisfy xxxxx1; for the second group P2, its binary indexes The binary index of the included data bits satisfies xxxx1x; and so on, six groups P1 to P6 can be obtained, wherein each unknown check code will be divided into a corresponding group. Then, by using the rule that the number of "1" in all data in the same group needs to be an even number, it can be determined whether the value of the unknown check code in the group is 1 or 0. As a result, the current verification data is obtained.

S130, insert the generated check data into the valid data according to the position insertion logic to obtain encrypted combined data.

Exemplarily, after determining the specific value of the check data this time, these check codes can be used to encrypt the valid data, that is, these check codes are inserted into the corresponding positions according to the above-mentioned position insertion logic. The encrypted combined data for encrypting the valid data is obtained, and then step S140 is performed.

S140, store the encrypted combined data and the encryption related information in the embedded flash memory in association.

The above-mentioned encryption-related information may be a specific encryption configuration instruction, an index of the current position insertion logic, or other information that can be used to reflect the relationship between the current position input logic and the current valid data. Data, etc., are not limited here.

Exemplarily, after obtaining the encrypted combined data, it can be associated with the information related to the current encryption, and then the data can be stored in the embedded flash memory, so that after the encrypted combined data is read later, it can be obtained at the same time. to the encryption-related information, and then use the encryption-related information to decrypt, so as to restore the original valid data.

As an optional solution, after the valid data is encrypted and stored, if the original valid data needs to be obtained, the process of reading the data from the flash memory and decrypting it is also involved. Referring to FIG. 4, exemplarily, the data management method for embedded flash memory further includes the following steps S150-S160:

S150: Read the above encrypted combined data and associated encryption related information, and determine the position insertion logic corresponding to the encrypted combined data according to the encryption related information.

S160, performing Hamming decryption on the encrypted combined data according to the position insertion logic to obtain the above-mentioned valid data. It can be understood that the Hamming decryption operation is closely related to the above-mentioned Hamming encryption operation. As shown in Figure 3, by obtaining the original encryption position insertion logic, the values of these check codes can be determined, and then according to the principle of Hamming code decryption, the unencrypted valid data can be recovered.

In addition, if any 1-bit data in the combined data is wrong, it will not affect the real valid data. Because of the error correction feature of Hamming code, any 1-bit erroneous data can be corrected. Of course, if there are multiple bits of erroneous data, the correctness of these valid data cannot be guaranteed.

The data management method for embedded flash memory according to the embodiment of the present application performs a configurable operation by inserting logic into the position of check data in Hamming coding, and still performs data encryption based on the principle of Hamming coding. In the case of modifying the original Hamming coding logic, it will improve the difficulty of cracking when the data is leaked, so the confidentiality of the stored data can be greatly improved, and based on the logic of the Hamming code coding, it can more effectively ensure data writing and reading. reliability, etc.

Referring to FIG. 5 , based on the data management method for embedded flash memory in the foregoing embodiment, this embodiment provides a data management apparatus 100 for embedded flash memory. Exemplarily, the data management apparatus 100 for embedded flash memory includes:

an acquisition module 110, configured to acquire valid data to be stored and encrypted configuration instructions;

The verification generation module 120 is configured to determine the position insertion logic of the verification data this time according to the encryption configuration instruction, and generate the verification data based on the Hamming coding using the position insertion logic and the valid data;

an encryption and reorganization module 130, configured to insert the verification data into the valid data according to the position insertion logic to obtain encrypted combined data;

The storage module 140 is configured to store the encrypted combined data and the encryption related information in the embedded flash memory in association.

Further, as shown in FIG. 6 , the data management apparatus 100 for embedded flash memory further includes:

a reading module 150, configured to read the encrypted combined data and the encrypted related information, and determine the position insertion logic corresponding to the encrypted combined data according to the encrypted related information;

The data decryption module 160 is configured to perform Hamming decryption on the combined data according to the position insertion logic to obtain the valid data.

It can be understood that the apparatus of this embodiment corresponds to the method of the above-mentioned embodiment, and the options in the above-mentioned embodiment are also applicable to this embodiment, so the description is not repeated here.

Referring to FIG. 7 , the present application also provides a control chip, which may be, for example, an MCU (microprocessor) chip, a SoC (system on chip) chip, or the like. Exemplarily, the control chip includes an embedded flash memory (also known as eFlash), a processor and a memory, wherein the embedded flash memory is used to access encrypted combined data, the memory stores a computer program, and the processor runs the computer program, Thereby, the control chip is made to execute the functions of each module in the above-mentioned data management method for embedded flash memory or the above-mentioned data management apparatus for embedded flash memory.

The present application also provides a readable storage medium for storing the computer program used in the above-mentioned control chip.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may also be implemented in other manners. The apparatus embodiments described above are only schematic. For example, the flowcharts and structural diagrams in the accompanying drawings show possible implementation architectures and functions of apparatuses, methods and computer program products according to various embodiments of the present application. and operation. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart diagrams, can be implemented using dedicated hardware-based systems that perform the specified functions or actions. be implemented, or may be implemented in a combination of special purpose hardware and computer instructions.

In addition, each functional module or unit in each embodiment of the present application may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application.

Claims (10)

1. A data management method for embedded flash memory, characterized in that, comprising: Obtain valid data to be stored and encrypted configuration instructions; Determine the position insertion logic of the verification data this time according to the encryption configuration instruction, and use the position insertion logic and the valid data to generate the verification data based on Hamming coding; Inserting the check data into the valid data according to the position insertion logic to obtain encrypted combined data; The encrypted combined data is stored in the embedded flash memory in association with the encryption related information. 2. The data management method for embedded flash memory according to claim 1, further comprising: Read the encrypted combination data and the associated encryption related information, and determine the position insertion logic corresponding to the encrypted combination data according to the encryption related information; Perform Hamming decryption on the encrypted combined data according to the position insertion logic to obtain the valid data. 3 . The data management method for embedded flash memory according to claim 1 , wherein the position insertion logic comprises the insertion position of each check code in the check data in the encrypted combined data to be solved. 4 . , the use of the position insertion logic and the valid data to generate the check data based on Hamming coding, including: According to the insertion position of each check code, obtain the encrypted combined data to be solved composed of the combination of multiple unknown check codes and the valid data; Obtain the binary index of each data bit in the encrypted combined data to be solved; According to the rule that only 1 unknown check code is included in each grouping, the encrypted combined data to be solved is grouped based on the binary index to obtain multiple groups of groups; The values of the unknown check codes in each group are determined according to the rule that the number of "1" in each group is an even number, and the check codes with known values together constitute the check data. 4. The data management method for embedded flash memory according to claim 1, characterized in that, each kind of said position insertion logic is at most no more than two check codes are inserted continuously at the same position; The position insertion logic does not include inserting each bit of check code into the corresponding data bits of 2 ^N , where N is an integer greater than or equal to 0. 5. The data management method for embedded flash memory according to any one of claims 1 to 4, wherein the number of bits of the check data and the number of bits of valid data to be stored satisfy the following relationship: 2 ^r >=n+1; In the formula, r represents the minimum number of digits of the required check code, and n represents the number of digits of the valid data. 6 . The data management method for embedded flash memory according to claim 1 , wherein the correspondence between the insertion logic in different positions of the verification data and different encryption configuration instructions is implemented by a programmable logic device. 7 . 7. A data management device for embedded flash memory, comprising: The acquisition module is used to acquire valid data to be stored and encrypted configuration instructions; A verification generation module, configured to determine the position insertion logic of the verification data this time according to the encryption configuration instruction, and generate the verification data based on the Hamming coding using the position insertion logic and the valid data; an encryption and reorganization module, configured to insert the verification data into the valid data according to the position insertion logic to obtain encrypted combined data; The storage module is used for storing the encrypted combined data and the encryption related information in the embedded flash memory in association. 8. The data management device for embedded flash memory according to claim 7, further comprising: a reading module, configured to read the encrypted combined data and the encrypted related information, and determine the position insertion logic corresponding to the encrypted combined data according to the encrypted related information; A data decryption module, configured to perform Hamming decryption on the combined data according to the position insertion logic to obtain the valid data. 9. A control chip, characterized in that it comprises an embedded flash memory, a memory and a processor, the embedded flash memory is used to access encrypted combined data, the memory is used to store a computer program, and the computer program is used in the When running on the processor, the control chip is made to execute the data management method for embedded flash memory according to any one of claims 1-6. 10. A readable storage medium, characterized in that it stores a computer program that, when executed on a processor, implements the method for embedded flash memory according to any one of claims 1-6. data management methods.

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