CN117407929A - Method and device for destroying data of nonvolatile storage device - Google Patents

Method and device for destroying data of nonvolatile storage device Download PDF

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CN117407929A
CN117407929A CN202311713230.8A CN202311713230A CN117407929A CN 117407929 A CN117407929 A CN 117407929A CN 202311713230 A CN202311713230 A CN 202311713230A CN 117407929 A CN117407929 A CN 117407929A
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data
destroyed
nonvolatile memory
storage address
specific object
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CN117407929B (en
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罗远哲
刘瑞景
吕雪萍
臧杰
林文强
冯建业
于文志
李兵
陈思杰
姜传利
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Shandong Wanlihong Information Technology Co ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • G06F21/79—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C16/00—Erasable programmable read-only memories
    • G11C16/02—Erasable programmable read-only memories electrically programmable
    • G11C16/06—Auxiliary circuits, e.g. for writing into memory
    • G11C16/10—Programming or data input circuits
    • G11C16/14—Circuits for erasing electrically, e.g. erase voltage switching circuits

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  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Read Only Memory (AREA)

Abstract

The invention relates to the technical field of data storage processing, and discloses a method and a device for destroying data of nonvolatile storage equipment, wherein the device comprises a nonvolatile memory to-be-destroyed data determining module, a nonvolatile memory to-be-destroyed data storage information management module and a nonvolatile memory destruction executing module; the storage address ID of the data to be destroyed in the nonvolatile memory is accurately and rapidly searched by using specific object data of the data to be destroyed and a simulated annealing algorithm, and data support is provided for rapidly and accurately identifying the data to be destroyed in the nonvolatile memory; the specific object data to be destroyed in the nonvolatile memory is precisely matched with the storage address ID data according to the number, the data to be destroyed is searched by utilizing a data identification algorithm, and the data destruction and overwriting actions are executed, so that the point-to-point flexible processing of the data to be destroyed in the nonvolatile memory is realized, and the safety of the data destruction processing of the nonvolatile memory is improved.

Description

Method and device for destroying data of nonvolatile storage device
Technical Field
The invention relates to the technical field of data storage processing, in particular to a method and a device for destroying data of nonvolatile storage equipment.
Background
Whether the data in the memory can be rewritten into the standard at any time when the computer is used or not can be classified into two main products, namely ROM and flashram; the nonvolatile memory is divided into read-only memory ROM, programmable read-only memory PROM, electrically rewritable read-only memory EAROM, erasable programmable read-only memory EPROM and electrically erasable programmable read-only memory EEPROM, flashmemory flash memory; a Read-only memory (ROM) is a semiconductor memory, and has characteristics that once data is stored, it cannot be changed or deleted any more, and the content does not disappear due to power-off. In electronic or computer systems, programs or data that are not required to be changed frequently are usually stored, and early home computers such as appleII supervisory programs, BASIC language interpreters, and hardware dot matrix fonts, the BIOS of the personal computers IBM PC/XT/AT, and the BASIC interpreters of the IBM PC/XT, and the firmware in other various microcomputer systems are stored in ROM; the programmable read-only memory has determinant fuses inside, and can be blown by using current according to the needs of users to write the needed data and programs, and once the fuses are blown, the fuses cannot be recovered, namely the data cannot be changed any more; the erasable programmable read-only memory can utilize high voltage to program and write data, but the circuit is required to be exposed to ultraviolet rays for a period of time during erasing, and the data can be emptied and reused. Therefore, a transparent window made of quartz glass is reserved on the package housing for ultraviolet exposure. After the program is written, a transparent window is covered by a sticker to prevent the data from being influenced by excessive exposure carelessly for a long time; the chip and the writing principle used in the one-time programming read-only memory are the same as EPROM, but in order to save the cost, a transparent window is not arranged on the package, so that the writing of programming can not be erased and rewritten any more; the operation principle of the EEPROM is similar to EPROM, but the erasing mode is completed by using high electric field, so that a transparent window is not needed; the nonvolatile memory can ensure the use safety of stored data, however, after the nonvolatile memory is used, a user is required to destroy the data in the memory to protect personal privacy and business secrets of the user, the data in the memory is required to be destroyed by physical destruction or logical overwriting destruction, however, the physical processing can lead to the damage of the body structure of the nonvolatile memory, the economic cost is high, the logical overwriting destruction mode is required to cover the whole data in the nonvolatile memory, the overwriting result cannot be fed back after the logical overwriting, the point-to-point search and the destruction overwriting of the specific data in the nonvolatile memory cannot be ensured, meanwhile, the time consumption of the existing nonvolatile memory data logical overwriting destruction process is long, and the data safety of the nonvolatile memory is reduced.
Chinese patent publication No. CN110135173a discloses a data storage device and a data destruction method of the data storage device, which adopts an interface module, a volatile storage module, a trigger module, a processor and a power module, wherein the processor controls the built-in power module to interrupt the power supply to the volatile storage module by receiving a trigger signal sent by the trigger module, so that the data stored in the volatile storage module can be destroyed safely, and the destroyed data cannot be recovered. Compared with the existing data storage device adopting a nonvolatile memory or a data destruction method adopting a manual format data storage device, the problem that data are illegally stolen due to incomplete cleaning caused by human errors is avoided.
Disclosure of Invention
(one) solving the technical problems
In order to solve the problems that the data in the memory is required to be destroyed by physical destruction or logical overwriting destruction, however, the physical processing can cause the damage of the body structure of the nonvolatile memory, the economic cost is high, the logical overwriting destruction mode needs to cover the data in the whole nonvolatile memory, the overwriting result cannot be fed back after the logical overwriting, the point-to-point searching and the destroying overwriting cannot be performed on the specific data in the nonvolatile memory cannot be guaranteed, meanwhile, the time consumption of the existing logical overwriting destruction process of the data of the nonvolatile memory is long, the data safety of the nonvolatile memory is reduced, and the purposes of flexible specific data destruction, high-efficiency data destruction and safety in use of the data of the nonvolatile memory are realized.
(II) technical scheme
The invention is realized by the following technical scheme: a method of data destruction of a non-volatile storage device, the method comprising the steps of:
s1, acquiring characteristic keyword data of data to be destroyed;
s2, searching data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and combining a data searching algorithm, outputting specific object data of the data to be destroyed and displaying;
s3, searching a storage address ID of the data to be destroyed in the nonvolatile memory by adopting a data identification algorithm according to the specific object data of the data to be destroyed, and outputting the storage address ID data of the data to be destroyed;
s4, matching the specific object data of the data to be destroyed with the storage address ID data of the data to be destroyed according to the characteristic numbers, and outputting the identification data of the data object to be destroyed and the storage address ID;
s5, acquiring the data object to be destroyed and the storage address ID identification data, identifying the data to be destroyed in the nonvolatile memory by utilizing a data identification algorithm, and executing destruction overwriting operation;
s6, after the data to be destroyed is rewritten, searching the data to be destroyed in the nonvolatile memory again according to the characteristic keyword data of the data to be destroyed and the data searching algorithm, and outputting feedback data of a specific object of the data to be destroyed;
S7, counting the number of the data to be destroyed in the interior according to the feedback data of the specific object of the data to be destroyed, analyzing and outputting a data destruction operation result of the nonvolatile memory, outputting the data destruction operation of the nonvolatile memory to finish when the feedback data number of the specific object of the data to be destroyed is zero, outputting the data destruction operation of the nonvolatile memory to finish when the feedback data number of the specific object of the data to be destroyed is not zero, and continuing to execute S2-S7.
Preferably, the operation steps for acquiring the feature keyword data of the data to be destroyed are as follows:
s11, acquiring characteristic keyword data of data to be destroyed through online acquisition of a data input endThe data feature keyword data to be destroyed comprises numerical feature keywords, category feature keywords, ordinal feature keywords, time and date feature keywords and text feature keywords.
Preferably, the operation steps of searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and combining the data searching algorithm, outputting the specific object data of the data to be destroyed and displaying are as follows:
s21, invoking the data feature keyword data to be destroyed ；
S22, keyword data according to the characteristics of the data to be destroyedSearching using iterative deepened search algorithmOutputting data to be destroyed in the nonvolatile memory and establishing a specific object data set of the data to be destroyed>，The method comprises the steps of carrying out a first treatment on the surface of the Wherein->Indicate->Specific object data of the data to be destroyed, +.>Representing the maximum value of the data quantity of the specific object of the data to be destroyed;
s23, outputting a specific object data set of the data to be destroyedAnd performing projection display through a display device, wherein the display device comprises a display screen and a projector.
Preferably, the data identification algorithm is adopted to search the storage address ID of the data to be destroyed in the nonvolatile memory according to the specific object data of the data to be destroyed, and the operation steps of outputting the storage address ID data of the data to be destroyed are as follows:
s31, acquiring a specific object data set of data to be destroyed；
S32, searching out a specific object data set of the data to be destroyed in the nonvolatile memory by adopting a data recognition algorithmSpecific object data of the data to be destroyed>The operation steps of storing address ID data in the nonvolatile memory are as follows:
step one, setting the current solution of the storage address ID data, and enabling T=T0, namely, in a specific object data set of the data to be destroyed The initial temperature at which annealing starts, an initial solution is randomly generated>Namely, random data specific object data of the data to be destroyed are randomly in the nonvolatile memory>Searching the storage address ID data and calculating the corresponding objective function value +.>；
Step two, generating a difference value between the new solution of the storage address ID data and the current solution of the storage address ID data, and according to the current solution of the storage address ID dataDisturbance is carried out, namely specific object data of the data to be destroyed is +.>Generating a new solution of memory address ID data>Calculate the corresponding objective function value +.>Obtaining the change quantity of the objective function>；
Step three, judging whether the new solution of the storage address ID data is accepted or not, if so<0, then store address ID data new solutionAccepted; if->0 or more, then store address ID data new solution +.>Accepted according to the following probability>Is the current temperature; the probability formula is +.>Wherein->Indicating the current temperature +_>A random function representing a range of values (0, 1);
step four, when the new solution of the storage address ID data is accepted, the new solution of the storage address ID dataIs treated as the current solution of the storage address ID data;
step five, circularly executing the steps one to four, and at the temperatureRepeating the disturbance and acceptance process for k times, and then executing the next step;
Step six, finally finding a global optimal solution: judging whether T has reached the end temperatureIf yes, terminating the algorithm, and outputting a storage address ID data set of the data to be destroyed>Wherein->Indicate->Specific object data of the data to be destroyed>Storing address ID data of the data to be destroyed corresponding to the nonvolatile memory; if not, the method goes to the circulation step to continue execution.
Preferably, the matching the specific object data of the data to be destroyed with the storage address ID data of the data to be destroyed according to the feature number, and the operation steps of outputting the specific object data to be destroyed and the storage address ID identification data are as follows:
s41, acquiring a specific object data set of the data to be destroyedAnd a data storage address ID data set to be destroyed +.>；
S42, collecting the specific object data of the data to be destroyed according to the number of the data to be destroyedSpecific object data of the data to be destroyed>Storage address ID data set corresponding to data to be destroyed +.>The data to be destroyed in (a) storing address ID data +.>Matching the data object to be destroyed and the storage address ID identification data +.>。
Preferably, the operation steps of acquiring the data object to be destroyed and the storage address ID identification data, identifying the data to be destroyed in the nonvolatile memory by using a data identification algorithm, and executing the destruction overwriting operation are as follows:
S51, acquiring the data object to be destroyed and the storage address ID identification data in S42;
s52, searching out data to be destroyed in the nonvolatile memory by adopting a data recognition algorithm in S32 according to the data object to be destroyed, the data object to be destroyed in the storage address ID recognition data and the data storage address ID data to be destroyed, and performing data overwriting destruction operation.
Preferably, after the data to be destroyed is overwritten, searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and the data searching algorithm, and outputting the feedback data of the specific object of the data to be destroyed comprises the following operation steps:
s61, after the overwriting and destroying of the data in the nonvolatile memory is completed, keyword data is obtained according to the characteristics of the data to be destroyedSearching out data to be destroyed in the nonvolatile memory by using an iterative deepening search algorithm and establishing a feedback data set of a specific object of the data to be destroyed>，/>The method comprises the steps of carrying out a first treatment on the surface of the Wherein->Indicate->Feedback data of specific objects of data to be destroyed, +.>And representing the maximum value of feedback data of the specific object of the data to be destroyed.
Preferably, the statistics is performed on the amount of the data to be destroyed according to the feedback data of the specific object of the data to be destroyed, the data destruction operation result of the nonvolatile memory is analyzed and output, when the feedback data amount of the specific object of the data to be destroyed is zero, the data destruction operation of the nonvolatile memory is completed, when the feedback data amount of the specific object of the data to be destroyed is not zero, the data destruction operation of the nonvolatile memory is not completed, and the operation steps of S2-S7 are continuously executed as follows:
S71, acquiring a feedback data set of a specific object of data to be destroyed；
S72, feeding back a data set for acquiring specific objects of data to be destroyedFeedback data of specific object of the data to be destroyed +.>Numerical statistics of the number of (2) is +.>And judging;
when (when)Outputting the data destruction operation of the nonvolatile memory to finish; when->Outputting the data destruction operation of the nonvolatile memory to finish, and continuing to execute S2-S7 until meeting +.>。
An apparatus for implementing the method for destroying data of the nonvolatile storage device comprises a nonvolatile memory to-be-destroyed data determining module, a nonvolatile memory to-be-destroyed data storage information management module, a nonvolatile memory destruction executing module and a nonvolatile memory destruction result feedback module;
the nonvolatile memory to-be-destroyed data determining module comprises a to-be-destroyed data characteristic obtaining unit, a to-be-destroyed data object searching unit and a to-be-destroyed data object displaying and outputting unit;
the data characteristic acquisition unit to be destroyed acquires data of characteristic keywords of the data to be destroyed by using a data input end; the data object searching unit to be destroyed is used for searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and in combination with a data searching algorithm; the display output unit is used for outputting specific object data of the data to be destroyed and visually displaying the specific object data by using display equipment;
The nonvolatile memory to-be-destroyed data storage information management module comprises a to-be-destroyed data object storage address data search unit, a to-be-destroyed data object and storage address data matching unit and a to-be-destroyed data object and storage address data output unit;
the data object storage address data searching unit is used for searching a storage address ID of the data to be destroyed in the nonvolatile memory by adopting a data identification algorithm according to specific object data of the data to be destroyed, and outputting data storage address ID data of the data to be destroyed; the data object to be destroyed and storage address data matching unit is used for matching specific object data of the data to be destroyed with ID data of the storage address of the data to be destroyed according to the characteristic number; the data object to be destroyed and storage address data output unit is used for outputting data object to be destroyed and storage address ID identification data formed by matching specific object data of the data to be destroyed with storage address ID data of the data to be destroyed;
the nonvolatile memory destruction execution module comprises a data object to be destroyed, a storage address data acquisition unit and a data destruction action unit for executing data destruction of the data to be destroyed;
The data object to be destroyed and the storage address data acquisition unit are used for acquiring identification data of the data object to be destroyed and the storage address ID; the data to be destroyed executing data destruction action unit uses the data object to be destroyed and the storage address ID identification data to be matched with a data identification algorithm to identify the data to be destroyed in the nonvolatile memory and execute destruction overwriting operation;
the nonvolatile memory destruction result feedback module comprises a data object to be destroyed feedback search unit and a data object destruction result feedback unit;
the data object feedback searching unit to be destroyed searches the data to be destroyed again in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and the data searching algorithm after the data to be destroyed is rewritten, and outputs the feedback data of the specific object of the data to be destroyed; the data object to be destroyed destruction result feedback unit counts the number of data to be destroyed inside according to the specific object feedback data of the data to be destroyed, analyzes and outputs the data destruction operation result of the nonvolatile memory, when the specific object feedback data number of the data to be destroyed is zero, the data destruction operation of the nonvolatile memory is completed, when the specific object feedback data number of the data to be destroyed is not zero, the data destruction operation of the nonvolatile memory is not completed, and the S2-S7 is continuously executed.
(III) beneficial effects
The invention provides a method and a device for destroying data of nonvolatile storage equipment. The beneficial effects are as follows:
1. the data input end is set through the data characteristic acquisition unit to be destroyed, so that the keyword data of the data characteristic to be destroyed is flexibly and conveniently acquired, and the processing efficiency of the data to be destroyed in the nonvolatile memory is improved; the data object searching unit to be destroyed utilizes the characteristic keyword data of the data to be destroyed in combination with the iterative deepening searching algorithm to quickly and accurately search the specific object data of the data to be destroyed, so that the recognition efficiency of the data to be destroyed in the nonvolatile memory is improved; the data object display output unit to be destroyed intuitively displays the specific object data of the data to be destroyed by means of the display equipment, so that the visual display of the destroyed data in the nonvolatile memory is realized.
2. The storage address ID of the data to be destroyed in the nonvolatile memory is accurately and rapidly searched by using specific object data of the data to be destroyed and a simulated annealing algorithm through a data object storage address data searching unit of the data to be destroyed, and data support is provided for rapidly and accurately identifying the data to be destroyed in the nonvolatile memory; the data object to be destroyed and the storage address data matching unit and the data destruction executing unit are matched with each other to accurately match specific object data to be destroyed and storage address ID data in the nonvolatile memory according to numbers, search the data to be destroyed by utilizing a data identification algorithm and execute data destruction overwriting action, so that point-to-point flexible processing of data points to be destroyed in the nonvolatile memory is realized, and the safety of data destruction processing of the nonvolatile memory is improved.
3. After the data to be destroyed is overwritten by the data object feedback search unit to be destroyed, performing secondary feedback search on the data to be destroyed in the nonvolatile memory, so as to realize accurate feedback of the data destruction result of the nonvolatile memory; the data object to be destroyed destruction result feedback unit counts the quantity of the data to be destroyed in the nonvolatile memory and outputs the destruction result of the data in the nonvolatile memory, so that the efficiency of destroying the data in the nonvolatile memory is improved, and the use safety of the data in the nonvolatile memory is ensured.
Drawings
FIG. 1 is a diagram showing the functional modules of a device for destroying data in a nonvolatile memory device;
FIG. 2 is a diagram illustrating the operation and structure of a method for destroying data in the nonvolatile memory device shown in FIG. 1.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the method and the device for destroying the data of the nonvolatile storage device is as follows:
referring to fig. 1-2, a method for destroying data in a nonvolatile memory device includes the following steps:
s1, acquiring characteristic keyword data of data to be destroyed;
s2, searching data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and combining a data searching algorithm, outputting specific object data of the data to be destroyed and displaying;
s3, searching a storage address ID of the data to be destroyed in the nonvolatile memory by adopting a data identification algorithm according to the specific object data of the data to be destroyed, and outputting the storage address ID data of the data to be destroyed;
s4, matching the specific object data of the data to be destroyed with the storage address ID data of the data to be destroyed according to the characteristic numbers, and outputting the identification data of the data object to be destroyed and the storage address ID;
s5, acquiring the data object to be destroyed and the storage address ID identification data, identifying the data to be destroyed in the nonvolatile memory by utilizing a data identification algorithm, and executing destruction overwriting operation;
s6, after the data to be destroyed is rewritten, searching the data to be destroyed in the nonvolatile memory again according to the characteristic keyword data of the data to be destroyed and the data searching algorithm, and outputting feedback data of a specific object of the data to be destroyed;
S7, counting the number of the data to be destroyed in the interior according to the feedback data of the specific object of the data to be destroyed, analyzing and outputting a data destruction operation result of the nonvolatile memory, outputting the data destruction operation of the nonvolatile memory to finish when the feedback data number of the specific object of the data to be destroyed is zero, outputting the data destruction operation of the nonvolatile memory to finish when the feedback data number of the specific object of the data to be destroyed is not zero, and continuing to execute S2-S7.
Further, referring to fig. 1-2, the operation steps for obtaining the feature keyword data of the data to be destroyed are as follows:
s11, acquiring characteristic keyword data of data to be destroyed through online acquisition of a data input endThe data feature keyword data to be destroyed comprises numerical feature keywords, category feature keywords, ordinal feature keywords, time and date feature keywords and text feature keywords.
Searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and combining a data searching algorithm, and outputting and displaying the specific object data of the data to be destroyed, wherein the operation steps are as follows:
s21, invoking the data feature keyword data to be destroyed；
S22, keyword data according to the characteristics of the data to be destroyed Searching out data to be destroyed in the nonvolatile memory by using an iterative deepening search algorithm and establishing a specific object data set of the data to be destroyed +.>，The method comprises the steps of carrying out a first treatment on the surface of the Wherein->Indicate->Specific object data of the data to be destroyed, +.>Representing the maximum value of the data quantity of the specific object of the data to be destroyed;
s23, outputting a specific object data set of the data to be destroyedAnd projection display is performed through a display device, wherein the display device comprises a display screen and a projector.
The data input end is set through the data characteristic acquisition unit to be destroyed, so that the keyword data of the data characteristic to be destroyed is flexibly and conveniently acquired, and the processing efficiency of the data to be destroyed in the nonvolatile memory is improved; the data object searching unit to be destroyed utilizes the characteristic keyword data of the data to be destroyed in combination with the iterative deepening searching algorithm to quickly and accurately search the specific object data of the data to be destroyed, so that the recognition efficiency of the data to be destroyed in the nonvolatile memory is improved; the data object display output unit to be destroyed intuitively displays the specific object data of the data to be destroyed by means of the display equipment, so that the visual display of the destroyed data in the nonvolatile memory is realized.
Further, referring to fig. 1-2, searching a storage address ID of the data to be destroyed in the nonvolatile memory according to the specific object data of the data to be destroyed by using a data recognition algorithm, and outputting the storage address ID data of the data to be destroyed comprises the following steps:
S31, acquiring a specific object data set of data to be destroyed；
S32, searching out a specific object data set of the data to be destroyed in the nonvolatile memory by adopting a data recognition algorithmSpecific object data of the data to be destroyed>The operation steps of storing address ID data in the nonvolatile memory are as follows:
step one, setting the current solution of the storage address ID data, and enabling T=T0, namely, in a specific object data set of the data to be destroyedThe initial temperature at which annealing starts, an initial solution is randomly generated>Namely, random data specific object data of the data to be destroyed are randomly in the nonvolatile memory>Searching the storage address ID data and calculating the corresponding objective function value +.>；
Step two, generating a difference value between the new solution of the storage address ID data and the current solution of the storage address ID data, and according to the current solution of the storage address ID dataDisturbance is carried out, namely specific object data of the data to be destroyed is +.>Generating a new solution of memory address ID data>Calculate the corresponding objective function value +.>Obtaining the change quantity of the objective function>；
Step three, judging whether the new solution of the storage address ID data is accepted or not, if so<0, then store address ID data new solutionAccepted; if->0 or more, then store address ID data new solution +. >Accepted according to the following probability>Is the current temperature; probability ofThe formula is->Wherein->Indicating the current temperature +_>A random function representing a range of values (0, 1);
step four, when the new solution of the storage address ID data is accepted, the new solution of the storage address ID dataIs treated as the current solution of the storage address ID data;
step five, circularly executing the steps one to four, and at the temperatureRepeating the disturbance and acceptance process for k times, and then executing the next step;
step six, finally finding a global optimal solution: judging whether T has reached the end temperatureIf yes, terminating the algorithm, and outputting a storage address ID data set of the data to be destroyed>Wherein->Indicate->Specific object data of the data to be destroyed>Storing address ID data of the data to be destroyed corresponding to the nonvolatile memory; if not, the method goes to the circulation step to continue execution.
The specific object data of the data to be destroyed and the storage address ID data of the data to be destroyed are matched according to the characteristic numbers, and the operation steps of outputting the object data to be destroyed and the storage address ID identification data are as follows:
s41, acquiring a specific object data set of the data to be destroyedAnd a data storage address ID data set to be destroyed +. >；
S42, collecting the specific object data of the data to be destroyed according to the number of the data to be destroyedSpecific object data of the data to be destroyed>Storage address ID data set corresponding to data to be destroyed +.>The data to be destroyed in (a) storing address ID data +.>Matching the data object to be destroyed and the storage address ID identification data +.>。
The storage address ID of the data to be destroyed in the nonvolatile memory is accurately and rapidly searched by using specific object data of the data to be destroyed and a simulated annealing algorithm through a data object storage address data searching unit of the data to be destroyed, and data support is provided for rapidly and accurately identifying the data to be destroyed in the nonvolatile memory; the data object to be destroyed and the storage address data matching unit and the data destruction executing unit are matched with each other to accurately match specific object data to be destroyed and storage address ID data in the nonvolatile memory according to numbers, search the data to be destroyed by utilizing a data identification algorithm and execute data destruction overwriting action, so that point-to-point flexible processing of data points to be destroyed in the nonvolatile memory is realized, and the safety of data destruction processing of the nonvolatile memory is improved.
Further, referring to fig. 1-2, the operation steps of acquiring the data object to be destroyed and the storage address ID identification data, identifying the data to be destroyed in the nonvolatile memory by using the data identification algorithm, and executing the destruction overwriting operation are as follows:
S51, acquiring the data object to be destroyed and the storage address ID identification data in S42;
s52, searching out data to be destroyed in the nonvolatile memory by adopting a data recognition algorithm in S32 according to the data object to be destroyed, the data object to be destroyed in the storage address ID recognition data and the data storage address ID data to be destroyed, and performing data overwriting destruction operation.
Further, referring to fig. 1-2, after the data to be destroyed is overwritten, searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and the data searching algorithm, and outputting the feedback data of the specific object of the data to be destroyed, the operation steps are as follows:
s61, after the overwriting and destroying of the data in the nonvolatile memory is completed, keyword data is obtained according to the characteristics of the data to be destroyedSearching out data to be destroyed in the nonvolatile memory by using an iterative deepening search algorithm and establishing a feedback data set of a specific object of the data to be destroyed>，/>The method comprises the steps of carrying out a first treatment on the surface of the Wherein->Indicate->Feedback data of specific objects of data to be destroyed, +.>And representing the maximum value of feedback data of the specific object of the data to be destroyed.
Counting the quantity of the internal data to be destroyed according to the feedback data of the specific object of the data to be destroyed, analyzing and outputting a data destruction operation result of the nonvolatile memory, outputting the data destruction operation of the nonvolatile memory to be completed when the feedback data quantity of the specific object of the data to be destroyed is zero, outputting the data destruction operation of the nonvolatile memory to be incomplete when the feedback data quantity of the specific object of the data to be destroyed is not zero, and continuously executing the operation steps of S2-S7 as follows:
S71, acquiring a feedback data set of a specific object of data to be destroyed；
S72, feeding back a data set for acquiring specific objects of data to be destroyedFeedback data of specific object of the data to be destroyed +.>Numerical statistics of the number of (2) is +.>And judging;
when (when)Outputting the data destruction operation of the nonvolatile memory to finish; when->Outputting the data destruction operation of the nonvolatile memory to finish, and continuing to execute S2-S7 until meeting +.>。
After the data to be destroyed is overwritten by the data object feedback search unit to be destroyed, performing secondary feedback search on the data to be destroyed in the nonvolatile memory, so as to realize accurate feedback of the data destruction result of the nonvolatile memory; the data object to be destroyed destruction result feedback unit counts the quantity of the data to be destroyed in the nonvolatile memory and outputs the destruction result of the data in the nonvolatile memory, so that the efficiency of destroying the data in the nonvolatile memory is improved, and the use safety of the data in the nonvolatile memory is ensured.
An apparatus for implementing a method for destroying data of a nonvolatile storage device, the apparatus includes a nonvolatile memory to-be-destroyed data determining module, a nonvolatile memory to-be-destroyed data storage information management module, a nonvolatile memory destruction executing module, and a nonvolatile memory destruction result feedback module;
The nonvolatile memory to-be-destroyed data determining module comprises a to-be-destroyed data characteristic obtaining unit, a to-be-destroyed data object searching unit and a to-be-destroyed data object displaying and outputting unit;
the data characteristic acquisition unit to be destroyed acquires keyword data of the data characteristic to be destroyed by using a data input end; the data object searching unit to be destroyed is used for searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and in combination with the data searching algorithm; the data object display output unit is used for outputting specific object data of the data to be destroyed and visually displaying the specific object data by using display equipment;
the nonvolatile memory to-be-destroyed data storage information management module comprises a to-be-destroyed data object storage address data search unit, a to-be-destroyed data object and storage address data matching unit and a to-be-destroyed data object and storage address data output unit;
the data object storage address data search unit is used for searching a storage address ID of the data to be destroyed in the nonvolatile memory by adopting a data identification algorithm according to specific object data of the data to be destroyed, and outputting data storage address ID data of the data to be destroyed; the data object to be destroyed and storage address data matching unit is used for matching specific object data of the data to be destroyed with ID data of the storage address of the data to be destroyed according to the characteristic number; the data object to be destroyed and storage address data output unit is used for outputting data object to be destroyed and storage address ID identification data formed by matching specific object data of the data to be destroyed with storage address ID data of the data to be destroyed;
The nonvolatile memory destruction execution module comprises a data object to be destroyed, a storage address data acquisition unit and a data destruction action unit for executing data destruction of the data to be destroyed;
the data object to be destroyed and the storage address data acquisition unit are used for acquiring identification data of the data object to be destroyed and the storage address ID; the data to be destroyed executes a data destruction action unit, and the data to be destroyed and the storage address ID identification data are matched with a data identification algorithm to identify the data to be destroyed in the nonvolatile memory and execute destruction overwriting operation;
the nonvolatile memory destruction result feedback module comprises a data object feedback search unit to be destroyed and a data object destruction result feedback unit to be destroyed;
the data object feedback searching unit to be destroyed re-searches the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and the data searching algorithm after the data to be destroyed is rewritten, and outputs the feedback data of the specific object of the data to be destroyed; and the data object to be destroyed destruction result feedback unit counts the number of the data to be destroyed in the interior according to the feedback data of the specific object of the data to be destroyed, analyzes and outputs the data destruction operation result of the nonvolatile memory, when the feedback data number of the specific object of the data to be destroyed is zero, the data destruction operation of the nonvolatile memory is output, and when the feedback data number of the specific object of the data to be destroyed is not zero, the data destruction operation of the nonvolatile memory is output, and the S2-S7 is continuously executed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A method for destroying data in a nonvolatile memory device, the method comprising the steps of:
s1, acquiring characteristic keyword data of data to be destroyed;
s2, searching data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and combining a data searching algorithm, outputting specific object data of the data to be destroyed and displaying;
s3, searching a storage address ID of the data to be destroyed in the nonvolatile memory by adopting a data identification algorithm according to the specific object data of the data to be destroyed, and outputting the storage address ID data of the data to be destroyed;
s4, matching the specific object data of the data to be destroyed with the storage address ID data of the data to be destroyed according to the characteristic numbers, and outputting the identification data of the data object to be destroyed and the storage address ID;
s5, acquiring the data object to be destroyed and the storage address ID identification data, identifying the data to be destroyed in the nonvolatile memory by utilizing a data identification algorithm, and executing destruction overwriting operation;
S6, after the data to be destroyed is rewritten, searching the data to be destroyed in the nonvolatile memory again according to the characteristic keyword data of the data to be destroyed and the data searching algorithm, and outputting feedback data of a specific object of the data to be destroyed;
s7, counting the number of the data to be destroyed in the interior according to the feedback data of the specific object of the data to be destroyed, analyzing and outputting a data destruction operation result of the nonvolatile memory, outputting the data destruction operation of the nonvolatile memory to finish when the feedback data number of the specific object of the data to be destroyed is zero, outputting the data destruction operation of the nonvolatile memory to finish when the feedback data number of the specific object of the data to be destroyed is not zero, and continuing to execute S2-S7.
2. A method of data destruction of a non-volatile storage device as in claim 1, wherein: the operation steps for acquiring the characteristic keyword data of the data to be destroyed are as follows:
s11, acquiring characteristic keyword data of data to be destroyed through online acquisition of a data input endThe data feature keyword data to be destroyed comprises numerical feature keywords, category feature keywords, ordinal feature keywords, time and date feature keywords and text feature keywords.
3. A method of data destruction of a non-volatile storage device as in claim 2, wherein: the operation steps of searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and combining a data searching algorithm, outputting the specific object data of the data to be destroyed and displaying are as follows:
s21, invoking the data feature keyword data to be destroyed；
S22, keyword data according to the characteristics of the data to be destroyedSearching out data to be destroyed in the nonvolatile memory by using an iterative deepening search algorithm and establishing a specific object data set of the data to be destroyed +.>，The method comprises the steps of carrying out a first treatment on the surface of the Wherein->Indicate->Specific object data of the data to be destroyed, +.>Representing the maximum value of the data quantity of the specific object of the data to be destroyed;
s23, outputting a specific object data set of the data to be destroyedAnd performing projection display through a display device, wherein the display device comprises a display screen and a projector.
4. A method of data destruction of a non-volatile storage device as in claim 3, wherein: the operation steps of searching the storage address ID of the data to be destroyed in the nonvolatile memory by adopting a data identification algorithm according to the specific object data of the data to be destroyed and outputting the storage address ID data of the data to be destroyed are as follows:
S31, acquiring a specific object data set of data to be destroyed；
S32, searching out a specific object data set of the data to be destroyed in the nonvolatile memory by adopting a data recognition algorithmSpecific object data of the data to be destroyed>The operation steps of storing address ID data in the nonvolatile memory are as follows:
step one, setting the current solution of the storage address ID data, and enabling T=T0, namely, in a specific object data set of the data to be destroyedThe initial temperature for starting annealing randomly generates an initial solution, namely, randomly generating specific object data of the data to be destroyed in the nonvolatile memory>Searching the storage address ID data and calculating the corresponding objective function value +.>；
Step two, generating a difference value between the new solution of the storage address ID data and the current solution of the storage address ID data, and according to the current solution of the storage address ID dataDisturbance is carried out, namely specific object data of the data to be destroyed is +.>Generating a new solution of the storage address ID data, calculating the corresponding objective function value to obtain the variation of the objective function +.>；
Step three, judging whether the new solution of the storage address ID data is accepted or not, if so<0, store address ID data new solution +.>Accepted; if->0 or more, then store address ID data new solution +.>Accepted according to the following probability >Is the current temperature; the probability formula is +.>Wherein->Indicating the current temperature +_>A random function representing a range of values (0, 1);
step four, when the new solution of the storage address ID data is accepted, the new solution of the storage address ID dataIs treated as the current solution of the storage address ID data;
step five, circularly executing the steps one to four, and at the temperatureRepeating the disturbance and acceptance process for k times, and then executing the next step;
step six, finally finding a global optimal solution: judging whether T has reached the end temperatureIf yes, terminating the algorithm, and outputting a storage address ID data set of the data to be destroyed>Wherein->Indicate->Specific object data of the data to be destroyed>Storing address ID data of the data to be destroyed corresponding to the nonvolatile memory; if not, the method goes to the circulation step to continue execution.
5. The method for destroying data in a nonvolatile memory device according to claim 4, wherein: the operation steps of matching the specific object data of the data to be destroyed with the storage address ID data of the data to be destroyed according to the characteristic numbers and outputting the identification data of the data object to be destroyed and the storage address ID are as follows:
s41, acquiring a specific object data set of the data to be destroyed And a data storage address ID data set to be destroyed +.>；
S42, collecting the specific object data of the data to be destroyed according to the number of the data to be destroyedSpecific object data of the data to be destroyed>Storage address ID data set corresponding to data to be destroyed +.>The data to be destroyed in (a) storing address ID data +.>Matching the data object to be destroyed and the storage address ID identification data +.>。
6. The method for destroying data in a nonvolatile memory device according to claim 5, wherein: the operation steps of acquiring the data object to be destroyed and the storage address ID identification data, utilizing a data identification algorithm to identify the data to be destroyed in the nonvolatile memory and executing the destruction overwriting operation are as follows:
s51, acquiring the data object to be destroyed and the storage address ID identification data in S42;
s52, searching out data to be destroyed in the nonvolatile memory by adopting a data recognition algorithm in S32 according to the data object to be destroyed, the data object to be destroyed in the storage address ID recognition data and the data storage address ID data to be destroyed, and performing data overwriting destruction operation.
7. The method for destroying data in a nonvolatile memory device according to claim 6, wherein: after the data to be destroyed is rewritten, searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and the data searching algorithm, and outputting the feedback data of the specific object of the data to be destroyed, wherein the operation steps are as follows:
S61, after the overwriting and destroying of the data in the nonvolatile memory is completed, keyword data is obtained according to the characteristics of the data to be destroyedSearching out data to be destroyed in the nonvolatile memory by using an iterative deepening search algorithm and establishing a feedback data set of a specific object of the data to be destroyed>，/>The method comprises the steps of carrying out a first treatment on the surface of the Wherein->Indicate->Feedback data of specific objects of data to be destroyed, +.>Representing data to be destroyedThe maximum value of the feedback data of the specific object.
8. The method for destroying data in a nonvolatile memory device according to claim 7, wherein: the method comprises the following steps of counting the quantity of data to be destroyed in the device according to the feedback data of the specific object of the data to be destroyed, analyzing and outputting a data destruction operation result of a nonvolatile memory, outputting the data destruction operation of the nonvolatile memory when the feedback data quantity of the specific object of the data to be destroyed is zero, outputting the data destruction operation of the nonvolatile memory when the feedback data quantity of the specific object of the data to be destroyed is not zero, and continuously executing the operation steps of S2-S7, wherein the operation steps are as follows:
s71, acquiring a feedback data set of a specific object of data to be destroyed；
S72, feeding back a data set for acquiring specific objects of data to be destroyed Feedback data of specific object of data to be destroyed in the systemNumerical statistics of the number of (2) is +.>And judging;
when (when)Outputting the data destruction operation of the nonvolatile memory to finish; when->Outputting the data destruction operation of the nonvolatile memory to finish, and continuing to execute S2-S7 until meeting +.>。
9. An apparatus for implementing a method for destroying data of a non-volatile memory device according to any of claims 1-8, characterized in that: the device comprises a nonvolatile memory to-be-destroyed data determining module, a nonvolatile memory to-be-destroyed data storage information management module, a nonvolatile memory destruction executing module and a nonvolatile memory destruction result feedback module;
the nonvolatile memory to-be-destroyed data determining module comprises a to-be-destroyed data characteristic obtaining unit, a to-be-destroyed data object searching unit and a to-be-destroyed data object displaying and outputting unit;
the data characteristic acquisition unit to be destroyed acquires data of characteristic keywords of the data to be destroyed by using a data input end; the data object searching unit to be destroyed is used for searching the data to be destroyed in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and in combination with a data searching algorithm; the display output unit is used for outputting specific object data of the data to be destroyed and visually displaying the specific object data by using display equipment;
The nonvolatile memory to-be-destroyed data storage information management module comprises a to-be-destroyed data object storage address data search unit, a to-be-destroyed data object and storage address data matching unit and a to-be-destroyed data object and storage address data output unit;
the data object storage address data searching unit is used for searching a storage address ID of the data to be destroyed in the nonvolatile memory by adopting a data identification algorithm according to specific object data of the data to be destroyed, and outputting data storage address ID data of the data to be destroyed; the data object to be destroyed and storage address data matching unit is used for matching specific object data of the data to be destroyed with ID data of the storage address of the data to be destroyed according to the characteristic number; the data object to be destroyed and storage address data output unit is used for outputting data object to be destroyed and storage address ID identification data formed by matching specific object data of the data to be destroyed with storage address ID data of the data to be destroyed;
the nonvolatile memory destruction execution module comprises a data object to be destroyed, a storage address data acquisition unit and a data destruction action unit for executing data destruction of the data to be destroyed;
The data object to be destroyed and the storage address data acquisition unit are used for acquiring identification data of the data object to be destroyed and the storage address ID; the data to be destroyed executes a data destruction action unit, and a data object to be destroyed and storage address ID identification data are matched with a data identification algorithm to identify the data to be destroyed in the nonvolatile memory and execute destruction overwriting operation;
the nonvolatile memory destruction result feedback module comprises a data object to be destroyed feedback search unit and a data object destruction result feedback unit;
the data object feedback searching unit to be destroyed searches the data to be destroyed again in the nonvolatile memory according to the characteristic keyword data of the data to be destroyed and the data searching algorithm after the data to be destroyed is rewritten, and outputs the feedback data of the specific object of the data to be destroyed; the data object to be destroyed destruction result feedback unit counts the number of data to be destroyed inside according to the specific object feedback data of the data to be destroyed, analyzes and outputs the data destruction operation result of the nonvolatile memory, when the specific object feedback data number of the data to be destroyed is zero, the data destruction operation of the nonvolatile memory is completed, when the specific object feedback data number of the data to be destroyed is not zero, the data destruction operation of the nonvolatile memory is not completed, and the S2-S7 is continuously executed.
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