CN115167767B - Dirty data prevention method and system based on BBC exclusive OR check - Google Patents

Abstract

The invention provides a dirty data prevention method and a dirty data prevention system based on BBC exclusive OR check, wherein the method comprises the following steps: step 1: receiving data sent by a server side; step 2: detecting whether dirty data exist in the data by utilizing a BBC exclusive OR checking algorithm; if dirty data exists in the data, stopping the transmission of the dirty data; and if the dirty data does not exist in the data, continuing to transmit the data. The dirty data can be quickly and effectively detected.

Description

Method and system for preventing dirty data based on BBC XOR check

technical field

The invention relates to the technical field of data verification, in particular to a method and system for preventing dirty data based on BBC XOR verification.

Background technique

The data interaction between two service individuals is one of the core services of the system. How to maintain the efficient and fast operation of the system has always been a research hotspot in the field of communication. Dirty data refers to data in the system that is out of range, meaningless, or in an illegal format, as well as irregular coding and ambiguous business logic in the source system. The main reason for the existence of dirty data is that the design of the source system is not rigorous enough. The main manifestations of dirty data are: wrong data format, unreasonable business logic, and violation of business rules.

At present, the traditional soft method of processing dirty data is to use COBOL language, C language or SQL statement to detect whether there is dirty data in the storage system, but these methods require a lot of programming work for programmers, and the interface processing functions of these languages are not Very strong, low execution efficiency, and slow query speed for dirty data, which greatly affects the user's work efficiency. Therefore, how to detect dirty data accurately and quickly is an urgent problem to be solved.

Therefore, the present invention proposes a method and system for preventing dirty data based on BBC XOR check.

Contents of the invention

The present invention provides a method and system for preventing dirty data based on BBC XOR check, which is used to check whether dirty data exists on data by using BBC XOR check algorithm, and can quickly and effectively realize dirty data detection.

The present invention provides a dirty data prevention method based on BBC XOR check, comprising:

Step 1: Receive the data sent by the server;

Step 2: Use the BBC XOR check algorithm to detect whether there is dirty data in the data;

If there is dirty data in the data, stop the transmission of the dirty data;

If there is no dirty data in the data, continue to transmit the data.

Preferably, the process of continuing to transmit the data also includes:

If the data is damaged when being written into the storage hard disk, it is prohibited to write the data into the storage hard disk.

Preferably, the received data sent by the server is in hexadecimal form, and the last two bits of data in the hexadecimal system are check data.

Preferably, whether there is dirty data in the data detected by using the BBC XOR check algorithm, including:

Step A1: Use formula (1) to determine whether the received data sent by the server is an integer number of bytes of data, and control the start and stop of the data transmission according to the result of the determination:

Among them, F represents the judgment value; D represents the received data sent by the server, and the data form is in binary form at this time; (D) ₁₆ represents the data that converts the data D into hexadecimal form; % represents the remainder; len [(D) ₁₆ ] means to obtain the total number of digits of the hexadecimal data (D) ₁₆ ;

If F=1, it means that the received data sent by the server end is data of an integer number of bytes, then control the data to continue transmission, and carry out the judgment and control of subsequent steps A2 and A3;

If F=0, it means that the received data sent by the server is not an integer number of bytes of data, then control the data transmission to stop;

Step A2: If the data is data of an integer number of bytes, then according to the received data sent by the server end, and utilize the BBC XOR check algorithm of formula (2) to obtain the data sent by the received server end Algorithm check value of :

Wherein, J ₁₆ represents the algorithm check value of the data sent by the server end received; S ₁₆ (i) represents the hexadecimal value of the data sent by the server end received using the BBC XOR check algorithm The check value calculated to the i-th byte in the form; [D] ₁₆ (i) indicates the data of the i-th byte in the hexadecimal form of the received data sent by the server; [D] ₁₆ (1) Indicates the data of the first byte in the hexadecimal format of the received data sent by the server; xor means exclusive OR; S ₁₆ {len[(D) ₁₆ ]/2-1}

Indicates the data obtained by substituting i=len[(D) ₁₆ ]/2-1 into the formula of S ₁₆ (i);

Step A3: After calculating the algorithm check value of the received data sent by the server in step A2, use formula (3) according to the received algorithm check value of the data sent by the server and the received The verification data of the last two digits of the data sent by the server end controls the start and stop of the data transmission:

Wherein, E represents the start-stop control value of the data transmission under the condition that the data is an integer number of bytes of data; >>2 represents a right shift of 2 bits; <<2 represents a left shift of 2 bits;

If E=1, it means that there is no dirty data in the data, then control the data to continue to be transmitted;

If E=0, it means that there is dirty data in the data, and the control stops the transmission of the data.

Preferably, if the data is damaged when writing to the storage hard disk, before prohibiting the data from being written to the storage hard disk, it includes:

Detecting the storage hard disk in real time to obtain a detection log;

Perform multi-dimensional index analysis on the detection log, and sequentially obtain the index vector of each dimension index according to the weight of the index;

According to the vector analysis standard of the corresponding dimension index, the analysis value of the corresponding index vector is obtained;

Comparing the analyzed value with a preset value to obtain a difference;

Based on all the difference values and the index weights of the corresponding dimension indexes, obtain the writing disqualification of the storage hard disk;

When the writing disqualification is greater than a preset threshold, it is determined that the storage hard disk is damaged.

The present invention provides a dirty data prevention system based on BBC XOR check, including:

The receiving module is used to receive the data sent by the server;

A detection module, configured to utilize a BBC XOR check algorithm to detect whether there is dirty data in the data;

If there is dirty data in the data, stop the transmission of the dirty data;

If there is no dirty data in the data, continue to transmit the data.

Preferably, it also includes:

The write-inhibiting module is configured to prohibit writing the data into the storage hard disk if the data is damaged when being written into the storage hard disk.

Preferably, the received data sent by the server is in hexadecimal form, and the last two bits of data in the hexadecimal system are check data.

Preferably, the detection module includes:

The first calculation unit is used to judge whether the received data sent by the server end is data of an integer number of bytes by using the formula (1), and control the start and stop of the data transmission according to the judgment result:

Among them, F represents the judgment value; D represents the received data sent by the server, and the data form is in binary form at this time; (D) ₁₆ represents the data that converts the data D into hexadecimal form; % represents the remainder; len [(D) ₁₆ ] means to obtain the total number of digits of the hexadecimal data (D) ₁₆ ;

If F=1, it means that the received data sent by the server end is data of an integer number of bytes, then control the data to continue transmission, and carry out the judgment and control of subsequent steps A2 and A3;

If F=0, it means that the received data sent by the server is not an integer number of bytes of data, then control the data transmission to stop;

The second calculating unit is used for if the data is data of an integer number of bytes, then according to the data sent by the received server end, and using the BBC exclusive OR check algorithm of formula (2) to obtain the received server The algorithm check value of the data sent by the end:

Wherein, J ₁₆ represents the algorithm check value of the data sent by the server-side received; S ₁₆ (i) represents the hexadecimal value of the data sent by the server-side received using the BBC XOR check algorithm The check value calculated to the i-th byte in the form; [D] ₁₆ (i) indicates the data of the i-th byte in the hexadecimal form of the received data sent by the server; [D] ₁₆ (1) Indicates the data of the first byte in the hexadecimal format of the received data sent by the server; xor means exclusive OR; S ₁₆ {len[(D) ₁₆ ]/2-1}

Indicates the data obtained by substituting i=len[(D) ₁₆ ]/2-1 into the formula of S ₁₆ (i);

The third computing unit is configured to use formula (3) to calculate the received algorithm check value of the data sent by the server and the received algorithm check value of the data sent by the server. The verification data of the last two digits of the received data sent by the server end controls the start and stop of the data transmission:

Wherein, E represents the start-stop control value of the data transmission under the condition that the data is an integer number of bytes of data; >>2 represents a right shift of 2 bits; <<2 represents a left shift of 2 bits;

If E=1, it means that there is no dirty data in the data, then control the data to continue to be transmitted;

If E=0, it means that there is dirty data in the data, and the control stops the transmission of the data.

Preferably, it also includes:

A log acquisition module, configured to detect the storage hard disk in real time and obtain a detection log;

A multi-dimensional analysis module, configured to perform multi-dimensional index analysis on the detection log, and sequentially obtain the index vector of each dimension index according to the weight of the index;

According to the vector analysis standard of the corresponding dimension index, the analysis value of the corresponding index vector is obtained;

A comparison module, configured to compare the analysis value with a preset value to obtain a difference;

Based on all the difference values and the index weights of the corresponding dimension indexes, obtain the writing disqualification of the storage hard disk;

When the writing disqualification is greater than a preset threshold, it is determined that the storage hard disk is damaged.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a kind of flow chart of the dirty data prevention method based on BBC XOR check in the embodiment of the present invention;

Fig. 2 is the structural diagram of a kind of dirty data prevention system based on BBC XOR check in the embodiment of the present invention;

Fig. 3 is a structural diagram of a detection module in an embodiment of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

The present invention provides a dirty data prevention method based on BBC XOR check, as shown in Figure 1, comprising:

Step 1: Receive the data sent by the server;

Step 2: Use the BBC XOR check algorithm to detect whether there is dirty data in the data;

If there is dirty data in the data, stop the transmission of the dirty data;

If there is no dirty data in the data, continue to transmit the data.

Preferably, the received data sent by the server is in hexadecimal form, and the last two bits of data in the hexadecimal system are check data.

In this embodiment, dirty data may be data with wrong data format, unreasonable business logic, or data that violates business rules.

The beneficial effect of the above technical solution is that by using the BBC XOR check algorithm to check whether the dirty data exists on the data, the dirty data can be quickly and effectively detected.

The present invention provides a method for preventing dirty data based on BBC XOR check. In the process of continuing to transmit the data, it also includes:

If the data is damaged when being written into the storage hard disk, it is prohibited to write the data into the storage hard disk.

The beneficial effect of the above technical solution is that dirty data can be effectively prevented from being written into the storage hard disk, thereby improving the storage efficiency and stability of the storage hard disk.

The present invention provides a method for preventing dirty data based on BBC XOR check, which uses the BBC XOR check algorithm to detect whether there is dirty data in the data, including:

Step A1: Use formula (1) to determine whether the received data sent by the server is an integer number of bytes of data, and control the start and stop of the data transmission according to the result of the determination:

Among them, F represents the judgment value; D represents the received data sent by the server, and the data form is in binary form at this time; (D) ₁₆ represents the data that converts the data D into hexadecimal form; % represents the remainder; len [(D) ₁₆ ] means to obtain the total number of digits of the hexadecimal data (D) ₁₆ ;

If F=1, it means that the received data sent by the server end is data of an integer number of bytes, then control the data to continue transmission, and carry out the judgment and control of subsequent steps A2 and A3;

If F=0, it means that the received data sent by the server is not an integer number of bytes of data, then control the data transmission to stop;

Step A2: If the data is data of an integer number of bytes, then according to the received data sent by the server end, and utilize the BBC XOR check algorithm of formula (2) to obtain the data sent by the received server end Algorithm check value of :

Wherein, J ₁₆ represents the algorithm check value of the data sent by the server end received; S ₁₆ (i) represents the hexadecimal value of the data sent by the server end received using the BBC XOR check algorithm The check value calculated to the i-th byte in the form; [D] ₁₆ (i) indicates the data of the i-th byte in the hexadecimal form of the received data sent by the server; [D] ₁₆ (1) Indicates the data of the first byte in the hexadecimal format of the received data sent by the server; xor means exclusive OR; S ₁₆ {len[(D) ₁₆ ]/2-1}

Indicates the data obtained by substituting i=len[(D) ₁₆ ]/2-1 into the formula of S ₁₆ (i);

Step A3: After calculating the algorithm check value of the received data sent by the server in step A2, use formula (3) according to the received algorithm check value of the data sent by the server and the received The verification data of the last two digits of the data sent by the server end controls the start and stop of the data transmission:

Wherein, E represents the start-stop control value of the data transmission under the condition that the data is an integer number of bytes of data; >>2 represents a right shift of 2 bits; <<2 represents a left shift of 2 bits;

If E=1, it means that there is no dirty data in the data, then control the data to continue to be transmitted;

If E=0, it means that there is dirty data in the data, and the control stops the transmission of the data.

In this embodiment, such as data (D) 16 is 10FE 25 39 1C;

Then (D) ₁₆ ＞＞2 is 10 FE 25 39

[(D) ₁₆ ＞＞2]＜＜2 is 10FE 25 39 00

(D) ₁₆ -{[(D) ₁₆ ＞＞2]＜＜2} is 1C

In this embodiment, the check value of the i-th byte is calculated, for example: hexadecimal data: 01A0 7C FF02, calculation: 01xor A0 xor 7C xor FF xor 02=20, the obtained check value is: 20.

The beneficial effect of the above technical solution is: use the formula (1) of step A1 to judge whether the data is data of an integer number of bytes according to the received data sent by the server end and control the start and stop of the data transmission, and then perform fast Detect data thereby improving detection time; Then utilize the formula (2) of step A2 to utilize the BBC XOR check detection algorithm to obtain the algorithmic check value of the data that the server end that receives described receives sends, and then utilize formula to carry out BBC XOR check automatically The verification detection algorithm obtains the algorithm verification value, which embodies the characteristics of intelligence and automation of the system; finally utilizes the formula (3) of step A3 according to the algorithm verification value of the data sent by the server end received and the received The verification data of the last two digits of the data sent by the server side controls the start and stop of the data transmission, so that dirty data can be detected by this method, which can effectively prevent dirty data from being written to the storage hard disk, thereby improving storage capacity. Hard disk storage efficiency and its stability.

The present invention provides a method for preventing dirty data based on BBC XOR check. If the data is damaged when it is written into the storage hard disk, it is forbidden to write the data into the storage hard disk before, including:

Detecting the storage hard disk in real time to obtain a detection log;

Perform multi-dimensional index analysis on the detection log, and sequentially obtain the index vector of each dimension index according to the weight of the index;

According to the vector analysis standard of the corresponding dimension index, the analysis value of the corresponding index vector is obtained;

Comparing the analyzed value with a preset value to obtain a difference;

Based on all the difference values and the index weights of the corresponding dimension indexes, obtain the writing disqualification of the storage hard disk;

When the writing disqualification is greater than a preset threshold, it is determined that the storage hard disk is damaged.

In this embodiment, the detection log refers to a current detection result stored inside the hard disk.

In this embodiment, the multi-dimensional index analysis is, for example, analyzed from multiple dimensions such as capacity, storage efficiency, and possibility of changing data during the storage process.

In this embodiment, the indicator weights are preset, and the cumulative sum of the indicator weights is 1.

In this embodiment, when the cumulative sum of all indicators multiplied by each difference value and the corresponding weight is greater than 0.3, it is determined that the storage hard disk is damaged.

The beneficial effect of the above technical solution is: by detecting the storage hard disk and performing multi-dimensional index analysis to obtain the analysis values of different dimension indexes, it is possible to determine whether there is a problem with the storage hard disk itself, which can effectively avoid the failure of the storage hard disk when the data verification is successful. Store data effectively in the hard disk.

The present invention provides a dirty data prevention system based on BBC XOR check, as shown in Figure 2, comprising:

The receiving module is used to receive the data sent by the server;

A detection module, configured to utilize a BBC XOR check algorithm to detect whether there is dirty data in the data;

If there is dirty data in the data, stop the transmission of the dirty data;

If there is no dirty data in the data, continue to transmit the data.

Preferably, the received data sent by the server is in hexadecimal form, and the last two bits of data in the hexadecimal system are check data.

The beneficial effect of the above technical solution is that by using the BBC XOR check algorithm to check whether the dirty data exists on the data, the dirty data can be quickly and effectively detected.

The present invention provides a kind of dirty data prevention system based on BBC XOR check, also comprises:

The write-inhibiting module is configured to prohibit writing the data into the storage hard disk if the data is damaged when being written into the storage hard disk.

The beneficial effect of the above technical solution is that dirty data can be effectively prevented from being written into the storage hard disk, thereby improving the storage efficiency and stability of the storage hard disk.

The present invention provides a dirty data prevention system based on BBC XOR verification, and the detection module, as shown in Figure 3, includes:

The first calculation unit is used to judge whether the received data sent by the server end is data of an integer number of bytes by using the formula (1), and control the start and stop of the data transmission according to the judgment result:

Among them, F represents the judgment value; D represents the received data sent by the server, and the data form is in binary form at this time; (D) ₁₆ represents the data that converts the data D into hexadecimal form; % represents the remainder; len [(D) ₁₆ ] means to obtain the total number of digits of the hexadecimal data (D) ₁₆ ;

If F=1, it means that the received data sent by the server end is data of an integer number of bytes, then control the data to continue transmission, and carry out the judgment and control of subsequent steps A2 and A3;

If F=0, it means that the received data sent by the server is not an integer number of bytes of data, then control the data transmission to stop;

The second calculating unit is used for if the data is data of an integer number of bytes, then according to the data sent by the received server end, and using the BBC exclusive OR check algorithm of formula (2) to obtain the received server The algorithm check value of the data sent by the end:

Wherein, J ₁₆ represents the algorithm check value of the data sent by the server end received; S ₁₆ (i) represents the hexadecimal value of the data sent by the server end received using the BBC XOR check algorithm The check value calculated to the i-th byte in the form; [D] ₁₆ (i) indicates the data of the i-th byte in the hexadecimal form of the received data sent by the server; [D] ₁₆ (1) Indicates the data of the first byte in the hexadecimal format of the received data sent by the server; xor means XOR; S ₁₆ {len[(D) ₁₆ ]/2-1}

Indicates the data obtained by substituting i=len[(D) ₁₆ ]/2-1 into the formula of S ₁₆ (i);

The third computing unit is configured to use formula (3) to calculate the received algorithm check value of the data sent by the server and the received algorithm check value of the data sent by the server. The verification data of the last two digits of the received data sent by the server end controls the start and stop of the data transmission:

Wherein, E represents the start-stop control value of the data transmission under the condition that the data is an integer number of bytes of data; >>2 represents a right shift of 2 bits; <<2 represents a left shift of 2 bits;

If E=1, it means that there is no dirty data in the data, then control the data to continue to be transmitted;

If E=0, it means that there is dirty data in the data, and the control stops the transmission of the data.

The beneficial effect of the above technical solution is: use the formula (1) of step A1 to judge whether the data is data of an integer number of bytes according to the received data sent by the server end and control the start and stop of the data transmission, and then perform fast Detect data thereby improving detection time; Then utilize the formula (2) of step A2 to utilize the BBC XOR check detection algorithm to obtain the algorithmic check value of the data that the server end that receives described receives sends, and then utilize formula to carry out BBC XOR check automatically The verification detection algorithm obtains the algorithm verification value, which embodies the characteristics of intelligence and automation of the system; finally utilizes the formula (3) of step A3 according to the algorithm verification value of the data sent by the server end received and the received The verification data of the last two digits of the data sent by the server side controls the start and stop of the data transmission, so that dirty data can be detected by this method, which can effectively prevent dirty data from being written to the storage hard disk, thereby improving storage capacity. Hard disk storage efficiency and its stability.

The present invention provides a kind of dirty data prevention system based on BBC XOR check, also comprises:

A log acquisition module, configured to detect the storage hard disk in real time and obtain a detection log;

A multi-dimensional analysis module, configured to perform multi-dimensional index analysis on the detection log, and sequentially obtain the index vector of each dimension index according to the weight of the index;

According to the vector analysis standard of the corresponding dimension index, the analysis value of the corresponding index vector is obtained;

A comparison module, configured to compare the analysis value with a preset value to obtain a difference;

Based on all the difference values and the index weights of the corresponding dimension indexes, obtain the writing disqualification of the storage hard disk;

When the writing disqualification is greater than a preset threshold, it is determined that the storage hard disk is damaged.

The beneficial effect of the above technical solution is: by detecting the storage hard disk and performing multi-dimensional index analysis to obtain the analysis values of different dimension indexes, it is possible to determine whether there is a problem with the storage hard disk itself, which can effectively avoid the failure of the storage hard disk when the data verification is successful. Store data effectively in the hard disk.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (8)

1. A dirty data prevention method based on BBC exclusive OR check is characterized by comprising the following steps:

step 1: receiving data sent by a server side;

step 2: detecting whether dirty data exist in the data by utilizing a BBC exclusive OR checking algorithm;

if dirty data exists in the data, stopping transmission of the dirty data;

if the data does not contain dirty data, continuing to transmit the data;

detecting whether dirty data exist in the data by utilizing a BBC exclusive OR checking algorithm comprises the following steps:

step A1: judging whether the received data sent by the server side is data of an integer number of bytes or not by using a formula (1), and controlling start and stop of data transmission according to a judging result:

wherein F represents a judgment value; d represents the received data sent by the server, and the data form is a binary form at the moment; (D) ₁₆ Representing data D converted into hexadecimal form; % represents remainder; len [ (D) ₁₆ ]Representing the determination of hexadecimal data (D) ₁₆ Is a data total bit number of (2);

if f=1, the received data sent by the server end is data with an integer number of bytes, the data is controlled to continue to be transmitted, and the judgment and control of the subsequent steps A2 and A3 are performed;

if f=0, the received data sent by the server end is not data of an integer number of bytes, and the data transmission is controlled to stop;

step A2: if the data is data with an integer number of bytes, obtaining an algorithm check value of the data sent by the received server according to the received data sent by the server and by utilizing a BBC exclusive OR check algorithm of the formula (2):

wherein J is ₁₆ An algorithm check value representing the received data sent by the server side; s is S ₁₆ (i) Representing a check value calculated to an ith byte in a hexadecimal form of data transmitted by the received server terminal, which is obtained by utilizing a BBC exclusive OR check algorithm; [ D] ₁₆ (i) Representing the data of the ith byte in the hexadecimal form of the received data sent by the server side; [ D] ₁₆ (1) Representing the 1 st byte in hexadecimal form of the data transmitted by the received serverData of (2); xor represents exclusive or; s is S ₁₆ {len[(D) ₁₆ ]2-1 represents that i=len [ (D) ₁₆ ]Substitution of/2-1 into S ₁₆ (i) Data obtained in the formula (i);

step A3: after the algorithm check value of the data sent by the received server is calculated in the step A2, the start and stop of the data transmission are controlled according to the algorithm check value of the data sent by the received server and the check data of the last two bits of data sent by the received server by using a formula (3):

wherein E represents a start-stop control value of the data transmission under the condition that the data is an integer number of bytes of data; >2 represents a right shift by 2 bits; <2 represents a left shift by 2 bits;

if e=1, indicating that there is no dirty data in the data, controlling the data to continue to be transmitted;

if e=0, indicating that dirty data exists in the data, control stops transmitting the data.

2. The method for preventing dirty data based on BBC exclusive or check as claimed in claim 1, further comprising, during the process of continuing to transmit the data:

and if the data is damaged when being written into the storage hard disk, the data is forbidden to be written into the storage hard disk.

3. The method for preventing dirty data based on BBC exclusive or check as claimed in claim 1, wherein the data sent by the server side is 16-ary, and the last two bits of data under 16-ary are check data.

4. The method for preventing dirty data based on BBC exclusive or check according to claim 1, wherein if the data is damaged when being written into a storage hard disk, prohibiting the data from being written into the storage hard disk, comprising:

detecting the storage hard disk in real time to obtain a detection log;

performing multidimensional index analysis on the detection log, and sequentially acquiring index vectors of each dimension index according to the weight of the index;

according to vector analysis standards of the corresponding dimension indexes, obtaining corresponding index vectors for analysis values;

comparing the analysis value with a preset value to obtain a difference value;

acquiring the writing disqualification of the storage hard disk based on all the difference values and the index weights of the corresponding dimension indexes;

and when the writing disqualification is larger than a preset threshold value, judging that the storage hard disk is damaged.

5. A dirty data prevention system based on BBC exclusive or checking, comprising:

the receiving module is used for receiving the data sent by the server side;

the detection module is used for detecting whether dirty data exist in the data by utilizing a BBC exclusive-OR check algorithm;

if dirty data exists in the data, stopping transmission of the dirty data;

if the data does not contain dirty data, continuing to transmit the data;

wherein, detection module includes:

the first calculating unit is used for judging whether the received data sent by the server side is data with an integer number of bytes or not by using the formula (1), and controlling the start and stop of data transmission according to a judging result:

wherein F represents a judgment value; d represents the received data sent by the server, and the data form is twoA binary form; (D) ₁₆ Representing data D converted into hexadecimal form; % represents remainder; len [ (D) ₁₆ ]Representing the determination of hexadecimal data (D) ₁₆ Is a data total bit number of (2);

if f=1, the received data sent by the server end is data with an integer number of bytes, the data is controlled to continue to be transmitted, and the judgment and control of the subsequent steps A2 and A3 are performed;

if f=0, the received data sent by the server end is not data of an integer number of bytes, and the data transmission is controlled to stop;

the second calculating unit is configured to obtain, according to the received data sent by the server, an algorithm check value of the received data sent by the server by using a BBC exclusive-or check algorithm of the formula (2), if the data is data of an integer number of bytes:

wherein J is ₁₆ An algorithm check value representing the received data sent by the server side; s is S ₁₆ (i) Representing a check value calculated to an ith byte in a hexadecimal form of data transmitted by the received server terminal, which is obtained by utilizing a BBC exclusive OR check algorithm; [ D] ₁₆ (i) Representing the data of the ith byte in the hexadecimal form of the received data sent by the server side; [ D] ₁₆ (1) Representing the 1 st byte of data in hexadecimal form of the received data sent by the server side; xor represents exclusive or;

S ₁₆ {len[(D) ₁₆ ]2-1 represents that i=len [ (D) ₁₆ ]Substitution of/2-1 into S ₁₆ (i) Data obtained in the formula (i);

the third calculation unit is configured to control start and stop of the data transmission according to the algorithm check value of the received data sent by the server and the check data of the last two bits of data sent by the server by using formula (3) after calculating the algorithm check value of the received data sent by the server:

wherein E represents a start-stop control value of the data transmission under the condition that the data is an integer number of bytes of data; >2 represents a right shift by 2 bits; <2 represents a left shift by 2 bits;

if e=1, indicating that there is no dirty data in the data, controlling the data to continue to be transmitted;

if e=0, indicating that dirty data exists in the data, control stops transmitting the data.

6. The BBC exclusive or check based dirty data prevention system according to claim 5, further comprising:

and the write-inhibition module is used for inhibiting the data from being written into the storage hard disk if the data is damaged during the writing of the data into the storage hard disk.

7. The system for preventing dirty data based on BBC exclusive or checking as claimed in claim 5, wherein the data transmitted from the server side is 16-ary, and the last two bits of data under 16-ary are check data.

8. The BBC exclusive or check based dirty data prevention system according to claim 5, further comprising:

the log acquisition module is used for detecting the storage hard disk in real time to obtain a detection log;

the multidimensional analysis module is used for carrying out multidimensional index analysis on the detection log and sequentially acquiring index vectors of each dimension index according to the weight of the index;

according to vector analysis standards of the corresponding dimension indexes, obtaining corresponding index vectors for analysis values;

the comparison module is used for comparing the analysis value with a preset value to obtain a difference value;

acquiring the writing disqualification of the storage hard disk based on all the difference values and the index weights of the corresponding dimension indexes;

and when the writing disqualification is larger than a preset threshold value, judging that the storage hard disk is damaged.

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