CN112947967B - Software updating method, blockchain application store and software uploading terminal - Google Patents

Abstract

The present disclosure provides a software update method, a blockchain application store, a software upload terminal, a computer device, and a readable storage medium. The method includes: the blockchain application store receives software update data uploaded by the software upload terminal; and updates the software. The data is encrypted and stored; when the user terminal accesses the blockchain application store to download software update data, the stored encrypted software update data is decrypted; the decrypted software update data is sent to the user terminal. The technical solution of the present disclosure can make software updates safe and reliable, and will not be tampered with at will.

Description

Software update method, blockchain application store and software upload terminal

Technical field

The present disclosure belongs to the field of communication technology, and specifically relates to a software update method, a blockchain application store, a software upload terminal, a computer device, and a computer-readable storage medium.

Background technique

Software is a collection of computer data and instructions organized in a specific order. Software often needs to be updated due to logic problems or function expansion. However, when updating software currently, users usually download the latest software version from the server or website for installation or update. This method may also download the software bundled on the website at the same time. Other applications or virus programs, and software files are easily tampered with, resulting in lower reliability and security during software updates.

Contents of the invention

The present disclosure provides a software update method, a blockchain application store, a software upload terminal, a computer device, and a computer-readable storage medium, so that the software update is safe and reliable and will not be tampered with at will.

In a first aspect, embodiments of the present disclosure provide a software update method applied to a blockchain application store. The method includes:

Receive software update data uploaded by the software upload terminal;

Encrypt software update data and store it;

When the user terminal accesses the blockchain application store to download software update data,

Decrypt the stored encrypted software update data;

Send the decrypted software update data to the user terminal.

Further, the encryption of software update data includes:

Group the software update data uploaded by the software upload terminal and generate multiple pieces of blockchain data;

Using a first encryption algorithm to respectively encrypt the multiple segments of blockchain data to obtain multiple segments of blockchain data after one encryption;

Encrypt the once-encrypted multiple pieces of blockchain data using keys to obtain multiple ciphertext blocks;

Encrypt the plurality of ciphertext blocks using a second encryption algorithm to obtain multiple pieces of blockchain data after secondary encryption;

The multiple pieces of blockchain data after the secondary encryption are merged to obtain encrypted software update data.

Further, the first encryption algorithm is a digital signature algorithm, and the second encryption algorithm is a hash algorithm.

Further, the software update data uploaded by the receiving software upload terminal is specifically:

Receive software update data uploaded by the software upload terminal through the 5G network;

The decrypted software update data is sent to the user terminal, specifically:

The decrypted software update data is sent to the user terminal through the 5G network.

In a second aspect, embodiments of the present disclosure provide a software update method, which is applied to a software upload terminal. The method includes:

Get software update data;

Upload the software update data to the blockchain application store, so that the blockchain application store encrypts the software update data and stores it, and when the user terminal accesses the blockchain application store to download the software update data, the stored The encrypted software update data is decrypted, and then the decrypted software update data is sent to the user terminal.

Further, the software upload terminal is connected to an electronic medium, and the electronic medium stores pre-encrypted software update data;

The acquisition of software update data includes:

Obtain pre-encrypted software update data from the electronic medium;

The pre-encrypted software update data is decrypted to obtain software update data.

Further, decrypting the pre-encrypted software update data to obtain software update data includes:

Obtain the deformed key in the software development terminal. The deformed key is that the software development terminal uses a message digest algorithm to calculate the software update data to generate an encryption key, and combines the n+1th bit of the encryption key with the Obtained by position replacement of n-1 bits;

Use a preset software decryption mechanism to decrypt the pre-encrypted software update data to obtain the ciphertext data block;

The deformed key is used to decrypt the ciphertext data block through a data encryption standard algorithm to obtain software update data.

In a third aspect, embodiments of the present disclosure provide a blockchain application store, including:

A receiving module, which is configured to receive software update data uploaded by the software upload terminal;

An encryption module, which is configured to encrypt and store software update data;

A decryption module, which is set to decrypt the stored encrypted software update data when the user terminal accesses the blockchain application store to download software update data;

The sending module is configured to send the decrypted software update data to the user terminal.

In a fourth aspect, embodiments of the present disclosure provide a software upload terminal, including:

Get module, which is configured to get software update data;

The upload module is configured to upload software update data to the blockchain application store, so that the blockchain application store encrypts the software update data and stores it, and connects the user terminal to the blockchain application store to download the software update data. At that time, the stored encrypted software update data is decrypted, and then the decrypted software update data is sent to the user terminal.

In a fifth aspect, embodiments of the present disclosure further provide a computer device, including a memory and a processor. A computer program is stored in the memory. When the processor runs the computer program stored in the memory, the processor executes The software update method as described in any one of the first aspects.

In a sixth aspect, embodiments of the present disclosure further provide a computer-readable storage medium, including: a computer program that, when run on a computer, causes the computer to perform the software update as described in any one of the first and second aspects. method.

Beneficial effects:

The software update method, blockchain application store, software upload terminal, computer equipment, and computer-readable storage medium provided by the disclosure receive software update data uploaded by the software upload terminal through the blockchain application store; and encrypt the software update data. Then store; when the user terminal accesses the blockchain application store to download software update data, the stored encrypted software update data is decrypted; the decrypted software update data is sent to the user terminal. The disclosed technical solution can safely and reliably implement software updates and prevent data from being tampered with during software updates.

Description of the drawings

Figure 1 is a schematic flowchart of a software update method provided by Embodiment 1 of the present disclosure;

Figure 2 is a schematic flow chart of a software update method provided by Embodiment 2 of the present disclosure;

Figure 3 is an architecture diagram of a blockchain application store provided by Embodiment 3 of the present disclosure;

Figure 4 is an architecture diagram of a software upload terminal provided by Embodiment 4 of the present disclosure;

FIG. 5 is an architectural diagram of a computer device provided by Embodiment 5 of the present disclosure.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be described in further detail below in conjunction with the accompanying drawings and examples.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in the embodiments of this disclosure and the appended claims, the singular forms "a," "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

When software is currently being updated, users usually download the latest software version from a server or website to install or update the software. They may also download other applications or virus programs bundled on the website, and software files are easily tampered with, making software updates unreliable. Less sex and safety.

The technical solution of the present disclosure and how the technical solution of the present disclosure solves the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

Figure 1 is a schematic flow chart of a software update method provided by Embodiment 1 of the present disclosure, which is applied to a blockchain application store. As shown in Figure 1, the method includes:

Step S101: Receive software update data uploaded by the software upload terminal;

Step S102: Encrypt the software update data and store it;

Step S103: When the user terminal accesses the blockchain application store to download software update data, decrypt the stored encrypted software update data;

Step S104: Send the decrypted software update data to the user terminal.

New software is born almost every moment in the world, whether it is a large software or a small application. Even if it is perfectly designed, it is impossible not to have bugs or not need to be expanded. When the released software has problems or new functions need to be added, the software needs to be updated; after the software is developed or needs to be updated, it is generally uploaded online through a specific software upload terminal. The software update data includes all files installed by the software. Including computer programs that can run on computers, and documents related to these computer programs; by creating a blockchain for software updates, the blockchain includes software upload terminal nodes, blockchain application store nodes, and user nodes.

Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of data blocks generated using cryptographic methods. Each data block contains A batch of Bitcoin network transaction information is obtained to verify the validity of the information (anti-counterfeiting) and generate the next block. In a narrow sense, blockchain is a chained data structure that combines data blocks in a sequential manner in chronological order, and is a cryptographically guaranteed distributed ledger that cannot be tampered with or forged. Broadly speaking, blockchain technology uses block chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses automated scripts to A new distributed infrastructure and computing paradigm that uses smart contracts composed of code to program and manipulate data.

Utilizing the characteristics of decentralization, non-tamperable information, openness and traceability of blockchain, we ensure that the software update data uploaded to the blockchain is safe and reliable. Then the software update data is encrypted in the application store to further ensure the security of the data in the blockchain network. When the user terminal accesses the blockchain application store to download the software update data, the encrypted software update is performed in the application store. The data is decrypted; the decrypted software update data is sent to the user terminal. Allow users to obtain update data and update the software.

Further, the encryption of software update data includes:

Group the software update data uploaded by the software upload terminal and generate multiple pieces of blockchain data;

Using a first encryption algorithm to respectively encrypt the multiple segments of blockchain data to obtain multiple segments of blockchain data after one encryption;

Encrypt the once-encrypted multiple pieces of blockchain data using keys to obtain multiple ciphertext blocks;

Encrypt the plurality of ciphertext blocks using a second encryption algorithm to obtain multiple pieces of blockchain data after secondary encryption;

The multiple pieces of blockchain data after the secondary encryption are merged to obtain encrypted software update data.

Software data can be better protected through double encryption, and it can prevent the software update data from being obtained by others and then tampering with the software data or implanting viruses, etc., and then re-upload the tampered software installation package to the app store. After the user downloads it, it will affect the user. Therefore, the server encrypts the obtained software update data multiple times, which can reduce the possibility of the software update data being tampered with.

The process of decrypting the stored encrypted software update data in the blockchain application store is the reverse operation of the encryption process, including:

Group the twice-encrypted software update data according to a preset method to obtain multiple segments of twice-encrypted blockchain data;

Use the reverse operation corresponding to the encryption of the second encryption algorithm to decrypt the multi-segment blockchain data after secondary encryption to obtain multiple ciphertext blocks;

Decrypt multiple ciphertext blocks through the private key to obtain multiple segments of blockchain data after one decryption; the private key corresponds to the key that encrypts the multiple segments of blockchain data after one encryption;

The multi-segment blockchain data decrypted once is decrypted using the reverse operation corresponding to the encryption of the first encryption algorithm to obtain the multi-segment blockchain data.

Merge multiple pieces of blockchain data to obtain complete software update data.

Preferably, encryption parameters can also be inserted into the secondary encrypted blockchain data to better protect the updated data.

Further, the first encryption algorithm is a digital signature algorithm, and the second encryption algorithm is a hash algorithm.

The first encryption algorithm adopts DSA digital signature algorithm; the second encryption algorithm adopts hash hash algorithm. Prevent data tampering caused by only using hash encryption algorithm in the blockchain.

Further, the software update data uploaded by the receiving software upload terminal is specifically:

Receive software update data uploaded by the software upload terminal through the 5G network;

The decrypted software update data is sent to the user terminal, specifically:

The decrypted software update data is sent to the user terminal through the 5G network.

Data transmission through the high speed, low latency, and large bandwidth of the 5G network can improve transmission efficiency and improve security.

The software update method of the disclosed embodiment is simple to operate and has high update efficiency. It is also based on blockchain sharing technology and multiple encryption algorithms to improve the security performance of software update data. It cannot be tampered with at will and realizes software update safely and reliably. .

Figure 2 is a schematic flow chart of a software update method provided in Embodiment 2 of the present disclosure, applied to a software upload terminal. As shown in Figure 2, the method includes:

Step S201: Obtain software update data;

Step S202: Upload the software update data to the blockchain application store, so that the blockchain application store encrypts the software update data and stores it, and when the user terminal accesses the blockchain application store to download the software update data, The stored encrypted software update data is decrypted, and then the decrypted software update data is sent to the user terminal.

The software upload terminal can be connected to multiple blockchain application stores, and it has strong security protection performance. After obtaining the software update data from the software development terminal, it is uploaded to the blockchain application store through a specific port, and the updated data is stored in the area. It is encrypted and stored in the blockchain to reduce the possibility of data tampering and ensure data security.

Further, the software upload terminal is connected to an electronic medium, and the electronic medium stores pre-encrypted software update data;

The acquisition of software update data includes:

Obtain pre-encrypted software update data from the electronic medium;

The pre-encrypted software update data is decrypted to obtain software update data.

For some software with special requirements, the developed or updated files need to be transferred to a specific terminal through electronic media for online upload. In this process, there is a risk of loss or theft. The software update data is obtained by pre-encrypting the software update data on the development terminal and storing it in an electronic medium. After connecting the electronic medium to the software upload terminal, the software update data in the electronic medium is decrypted.

Pre-encrypting software update data in the software development terminal includes:

Use MD5 algorithm to encrypt software update data to generate an encryption key;

Perform position replacement processing on the n+1th bit and the n-1th bit of the encryption key to obtain a series of deformed keys;

Use the deformed key to encrypt the software update data through the DES algorithm to obtain the corresponding ciphertext data block;

The ciphertext data block is encrypted using a preset software encryption mechanism to form ciphertext data, thereby completing the pre-encryption of the software update data.

The full name of MD5 is Message-Digest Algorithm 5, which is the fifth version of the message digest algorithm. It is one of the hash algorithms widely used in the current computer field to ensure the integrity and consistency of information transmission. The function of the MD5 algorithm is to convert the data operation into another fixed-length value. It is the basic principle of the hash algorithm. The MD5 algorithm is used to encrypt the software update data to generate a 32-character 128-bit encryption key. The third part of the encryption key is The n+1 bit and the n-1th bit are position-replaced to obtain a string of deformed keys. n is greater than or equal to 2, and n can be set by yourself.

The DES algorithm uses a 64-bit key to convert a 64-bit plaintext input block into a 64-bit ciphertext output block, and divides the output block into two parts: L0 and R0, each part is 32 bits. Specifically, 64-bit plaintext data is input and the initial IP is replaced; after the initial IP replacement, the plaintext data is divided into left and right parts, each part is 32 bits, represented by L0 and R0; under the control of the key, after 16 Round operation; after 16 rounds, the left and right parts are exchanged, connected again, and then inversely permuted; 64-bit ciphertext is output. The ciphertext data block is encrypted using a preset software encryption mechanism to form ciphertext data, thereby completing the pre-encryption of the software update data. The preset software encryption mechanism can be a commonly used encryption mechanism, such as ECB: Electronic Code Book (electronic codebook mode), CBC: Cipher Block Chaining (cipher block chaining mode), CTR: Counter (counter mode), CFB : Cipher Feedback (cipher feedback mode) or OFB: OutputFeedback (output feedback mode). After the software update data is pre-encrypted, it is stored in electronic media.

Further, decrypting the pre-encrypted software update data to obtain software update data includes:

Obtain the deformed key in the software development terminal. The deformed key is that the software development terminal uses the message digest MD5 algorithm to calculate the software update data to generate an encryption key, and combines the n+1th bit of the encryption key with Obtained by position replacement of the n-1th bit;

Use a preset software decryption mechanism to decrypt the pre-encrypted software update data to obtain the ciphertext data block;

The deformed key is used to decrypt the ciphertext data block through the data encryption standard DES algorithm to obtain software update data.

The decryption process is the reverse operation of the encryption process. For example, the decryption process of DES is the same in principle as the encryption process, with only a few differences:

If the order of use of subkeys during encryption is K1, K2...K16, then the order of use of subkeys during decryption is K16, K15...K1;

The input is 64-bit ciphertext and the output is 64-bit plaintext;

When generating a key, the encryption algorithm rotates to the left, but the decryption algorithm rotates to the right.

The deformed key in the software development terminal can be transmitted to the software upload terminal through another electronic medium. During decryption, since the software upload terminal obtains the encryption parameters during encryption, the software update data is obtained after decryption. The software update data is encrypted and then stored in electronic media to prevent data theft due to loss of electronic media and better ensure data security.

The disclosed technical solution can safely and reliably implement software updates and prevent data from being tampered with during software updates.

Figure 3 is an architectural diagram of a blockchain application store provided by Embodiment 3 of the present disclosure. As shown in Figure 3, the blockchain application store includes:

The receiving module 11 is configured to receive software update data uploaded by the software upload terminal;

The encryption module 12 is configured to encrypt the software update data and then store it;

The decryption module 13 is configured to decrypt the stored encrypted software update data when the user terminal accesses the blockchain application store to download software update data;

The sending module 14 is configured to send the decrypted software update data to the user terminal.

Further, the encryption module 12 is specifically configured as:

Group the software update data uploaded by the software upload terminal and generate multiple pieces of blockchain data;

Using a first encryption algorithm to respectively encrypt the multiple segments of blockchain data to obtain multiple segments of blockchain data after one encryption;

Encrypt the once-encrypted multiple pieces of blockchain data using keys to obtain multiple ciphertext blocks;

Encrypt the plurality of ciphertext blocks using a second encryption algorithm to obtain multiple pieces of blockchain data after secondary encryption;

The multiple pieces of blockchain data after the secondary encryption are merged to obtain encrypted software update data.

Further, the first encryption algorithm is a digital signature algorithm, and the second encryption algorithm is a hash algorithm.

Further, the receiving module 11 is specifically configured as:

Receive software update data uploaded by the software upload terminal through the 5G network;

The sending module 14 is specifically configured as:

The decrypted software update data is sent to the user terminal through the 5G network.

Figure 4 is an architectural diagram of a software upload terminal provided in Embodiment 4 of the present disclosure. As shown in Figure 4, it includes:

Acquisition module 21, which is configured to obtain software update data;

Upload module 22, which is configured to upload software update data to the blockchain application store, so that the blockchain application store encrypts the software update data and stores it, and accesses the blockchain application store at the user terminal to update the software data. When downloading, the stored encrypted software update data is decrypted, and then the decrypted software update data is sent to the user terminal.

Further, the software upload terminal also includes a connection module 23

The connection module 23 shown is configured to be connected to an electronic medium in which pre-encrypted software update data is stored;

The acquisition module 21 includes:

An acquisition unit configured to acquire pre-encrypted software update data from the electronic medium through the connection module 23;

A decryption unit configured to decrypt the pre-encrypted software update data to obtain the software update data.

Further, the decryption unit is specifically configured as:

The deformed key in the software development terminal is obtained through the acquisition unit. The deformed key is the software development terminal using the MD5 algorithm to calculate the software update data to generate an encryption key, and the n+th key of the encryption key is Obtained by positioning the 1st bit and the n-1th bit; and,

Use a preset software decryption mechanism to decrypt the pre-encrypted software update data to obtain the ciphertext data block; and,

The deformed key is used to decrypt the ciphertext data block through the DES algorithm to obtain software update data.

The blockchain application store and software upload terminal in the embodiment of the present disclosure are used to implement the software update method in Method Embodiment 1 and Method Embodiment 2, so the description is relatively simple. For details, please refer to the previous Method Embodiment 1 and Embodiment 2. The relevant descriptions in will not be repeated here.

In addition, as shown in Figure 5, Embodiment 5 of the present disclosure also provides a computer device, including a memory 10 and a processor 20. A computer program is stored in the memory 10. When the processor 20 runs, the memory 10 stores When using a computer program, the processor 20 executes the above various possible software update determination methods.

In addition, embodiments of the present disclosure also provide a computer-readable storage medium, in which computer-executable instructions are stored. When at least one processor of the user equipment executes the computer-executed instructions, the user equipment executes the above various possibilities. Methods.

Among them, computer-readable media includes computer storage media and communication media, where communication media includes any medium that facilitates transfer of a computer program from one place to another place. Storage media can be any available media that can be accessed by a general purpose or special purpose computer. An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium may be located in an ASIC (Application Specific Integrated Circuit). Additionally, the ASIC can be located in the user equipment. Of course, the processor and the storage medium may also exist as discrete components in the communication device.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the disclosure, and these modifications and improvements are also regarded as the protection scope of the disclosure.

Claims (10)

1. A software update method, applied to blockchain application stores, characterized in that the method includes: Receive software update data uploaded by the software upload terminal; Encrypt software update data and store it; When the user terminal accesses the blockchain application store to download software update data, the stored encrypted software update data is decrypted; Send the decrypted software update data to the user terminal; Wherein, the encryption of software update data includes: Group the software update data uploaded by the software upload terminal and generate multiple pieces of blockchain data; Using a first encryption algorithm to respectively encrypt the multiple segments of blockchain data to obtain multiple segments of blockchain data after one encryption; Encrypt the once-encrypted multiple pieces of blockchain data using keys to obtain multiple ciphertext blocks; Encrypt the plurality of ciphertext blocks using a second encryption algorithm to obtain multiple pieces of blockchain data after secondary encryption; The multiple pieces of blockchain data after the secondary encryption are merged to obtain encrypted software update data. 2. The method of claim 1, wherein the first encryption algorithm is a digital signature algorithm, and the second encryption algorithm is a hash algorithm. 3. The method according to claim 1, characterized in that the software update data uploaded by the receiving software upload terminal is specifically: Receive software update data uploaded by the software upload terminal through the 5G network; The decrypted software update data is sent to the user terminal, specifically: The decrypted software update data is sent to the user terminal through the 5G network. 4. A software update method, applied to software upload terminals, characterized in that the method includes: Get software update data; Upload the software update data to the blockchain application store, so that the blockchain application store encrypts the software update data and stores it, and when the user terminal accesses the blockchain application store to download the software update data, the stored Decrypt the encrypted software update data, and then send the decrypted software update data to the user terminal; Wherein, the encryption of software update data includes: Group the software update data uploaded by the software upload terminal and generate multiple pieces of blockchain data; Using a first encryption algorithm to respectively encrypt the multiple segments of blockchain data to obtain multiple segments of blockchain data after one encryption; Encrypt the once-encrypted multiple pieces of blockchain data using keys to obtain multiple ciphertext blocks; Encrypt the plurality of ciphertext blocks using a second encryption algorithm to obtain multiple pieces of blockchain data after secondary encryption; The multiple pieces of blockchain data after the secondary encryption are merged to obtain encrypted software update data. 5. The method according to claim 4, characterized in that the software upload terminal is connected to an electronic medium, and the electronic medium stores pre-encrypted software update data; The acquisition of software update data includes: Obtain pre-encrypted software update data from the electronic medium; The pre-encrypted software update data is decrypted to obtain software update data. 6. The method according to claim 5, characterized in that, decrypting the pre-encrypted software update data to obtain the software update data includes: Obtain the deformed key in the software development terminal. The deformed key is that the software development terminal uses a message digest algorithm to calculate the software update data to generate an encryption key, and combines the n+1th bit of the encryption key with the Obtained by position replacement of n-1 bits; Use a preset software decryption mechanism to decrypt the pre-encrypted software update data to obtain the ciphertext data block; The deformed key is used to decrypt the ciphertext data block through a data encryption standard algorithm to obtain software update data. 7. A blockchain application store, characterized by including: A receiving module, which is configured to receive software update data uploaded by the software upload terminal; An encryption module, which is configured to encrypt and store software update data; A decryption module, which is set to decrypt the stored encrypted software update data when the user terminal accesses the blockchain application store to download software update data; A sending module configured to send the decrypted software update data to the user terminal; Wherein, the encryption of software update data includes: Group the software update data uploaded by the software upload terminal and generate multiple pieces of blockchain data; Using a first encryption algorithm to respectively encrypt the multiple segments of blockchain data to obtain multiple segments of blockchain data after one encryption; Encrypt the once-encrypted multiple pieces of blockchain data using keys to obtain multiple ciphertext blocks; Encrypt the plurality of ciphertext blocks using a second encryption algorithm to obtain multiple pieces of blockchain data after secondary encryption; The multiple pieces of blockchain data after the secondary encryption are merged to obtain encrypted software update data. 8. A software upload terminal, characterized by including: Get module, which is configured to get software update data; The upload module is configured to upload software update data to the blockchain application store, so that the blockchain application store encrypts the software update data and stores it, and connects the user terminal to the blockchain application store to download the software update data. When, decrypt the stored encrypted software update data, and then send the decrypted software update data to the user terminal; Wherein, the encryption of software update data includes: Group the software update data uploaded by the software upload terminal and generate multiple pieces of blockchain data; Using a first encryption algorithm to respectively encrypt the multiple segments of blockchain data to obtain multiple segments of blockchain data after one encryption; Encrypt the once-encrypted multiple pieces of blockchain data using keys to obtain multiple ciphertext blocks; Encrypt the plurality of ciphertext blocks using a second encryption algorithm to obtain multiple pieces of blockchain data after secondary encryption; The multiple pieces of blockchain data after the secondary encryption are merged to obtain encrypted software update data. 9. A computer device, characterized in that it includes a memory and a processor, a computer program is stored in the memory, and when the processor runs the computer program stored in the memory, the processor executes the method according to claim 1 -3 and the software update method described in any one of claims 4-6. 10. A computer-readable storage medium, comprising: a computer program that, when run on a computer, causes the computer to execute the software update method according to any one of claims 1-3 and 4-6.