CN112162952B - Incremental information management method and device based on DNA storage - Google Patents
Incremental information management method and device based on DNA storage Download PDFInfo
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- 230000007246 mechanism Effects 0.000 claims description 17
- 230000008569 process Effects 0.000 abstract description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000013523 data management Methods 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010362 genome editing Methods 0.000 description 1
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- 238000005215 recombination Methods 0.000 description 1
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- G06F16/10—File systems; File servers
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/45—Structures or tools for the administration of authentication
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- G16B—BIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
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Abstract
The application provides a method and equipment for managing incremental information based on DNA storage, wherein the method comprises the following steps: step A, an incremental storage model structure based on Merkle-DAG is used for positioning a DNA storage data file block according to a file index; step B, reorganizing the DNA storage data file blocks to obtain an initial file before incremental operation as a reorganized file; step C, a link reorganization incremental information file is based on an incremental storage structure of Merkle-DAG; step D, reading and sequentially executing each increment operation in the recombined increment information file until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file; and E, performing reading operation on the final file. Based on the incremental storage model structure, a DNA information updating state machine is introduced, and the efficient reading of DNA storage data is realized by tracing a series of processes and methods such as file index, file reorganization, incremental information execution, data form restoration and the like.
Description
Technical Field
The application relates to the technical field of data processing, in particular to an incremental information management method and device based on DNA storage.
Background
DNA storage is considered as an information storage technology with great application prospect, and has great advantages over the traditional storage medium in terms of storage density, storage life and resource consumption, and lower storage cost and maintenance cost. However, when the data management is performed on the DNA storage information in the prior art, the gene editing operation needs to be repeatedly performed, and when the information is modified, all relevant data needs to be re-edited, so that the problems of low information modification efficiency and high cost are caused.
Specifically, when the traditional DNA storage information is subjected to data management, two major defects exist: on one hand, the information modification efficiency is low, and the cost is high; on the other hand, the method can only meet the DNA storage requirement in a single-party scene, lacks a permission management and control mechanism in a multiparty participation scene, and has a huge hidden trouble in the aspect of data security sharing.
Thus, there is a need for a better method to solve the above-mentioned technical problems.
Disclosure of Invention
In view of this, the present application proposes a method and apparatus for incremental information management based on DNA storage, and in particular, the present application proposes the following specific embodiments:
the embodiment of the application provides a method for managing incremental information based on DNA storage, which comprises the following steps:
step A, an incremental storage model structure based on Merkle-DAG is used for positioning a DNA storage data file block according to a file index;
step B, reorganizing the DNA storage data file blocks to obtain an initial file before incremental operation as a reorganized file;
step C, a link reorganization incremental information file is based on an incremental storage structure of Merkle-DAG;
step D, reading and sequentially executing each increment operation in the recombined increment information file until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file;
and E, performing reading operation on the final file.
In a specific embodiment, before step a, the method further comprises: and F, carrying out identity authentication, and acquiring a reading authority after the identity authentication passes.
In a specific embodiment, the step F specifically includes: identity authentication is carried out through the hierarchical deterministic key index, and reading permission is obtained after the identity authentication is passed; wherein the hierarchical deterministic key index employs a multi-layer authorization mechanism; the higher the layer number of nodes in the multi-layer authorization mechanism, the lower the corresponding authorization authority, and the node at the lowest layer corresponds to the highest authorization authority; and in the nodes of two adjacent layers, after the nodes of the lower layer carry out identity authentication on the nodes of the higher layer, the authorization authentication is improved for the nodes of the higher layer.
In a specific embodiment, the incremental operation includes: an information adding operation, an information deleting operation, an information modifying operation and an information inquiring operation.
In a specific embodiment, the step C specifically includes:
and tracing the Hash index of the Merkle-DAG based on the increment storage structure of the Merkle-DAG, and positioning and linking the recombined increment information file according to the Hash index of the Merkle-DAG.
In a specific embodiment, the step D specifically includes:
and reading and sequentially executing each increment operation in the recombined increment information file through the DNA information updating state machine until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file.
The embodiment of the application provides incremental information management equipment based on DNA storage, which comprises the following modules:
the positioning module is used for positioning the DNA storage data file block according to the file index based on the incremental storage model structure of the Merkle-DAG;
the reorganization module is used for reorganizing the DNA storage data file blocks to obtain an initial file before incremental operation as a reorganized file;
the link module is used for linking and reorganizing the increment information file based on the increment storage structure of the Merkle-DAG;
the execution module is used for reading and sequentially executing each increment operation in the recombined increment information file until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file;
and the reading module is used for carrying out reading operation on the final file.
In a specific embodiment, the method further comprises: and the permission module is used for carrying out identity authentication and acquiring the reading permission after the identity authentication passes.
In a specific embodiment, the permission module is specifically configured to: identity authentication is carried out through the hierarchical deterministic key index, and reading permission is obtained after the identity authentication is passed; wherein the hierarchical deterministic key index employs a multi-layer authorization mechanism; the higher the layer number of nodes in the multi-layer authorization mechanism, the lower the corresponding authorization authority, and the node at the lowest layer corresponds to the highest authorization authority; and in the nodes of two adjacent layers, after the nodes of the lower layer carry out identity authentication on the nodes of the higher layer, the authorization authentication is improved for the nodes of the higher layer.
In a specific embodiment, the incremental operation includes: an information adding operation, an information deleting operation, an information modifying operation and an information inquiring operation.
Compared with the prior art, the embodiment of the application has the following effects:
aiming at the safety problem existing in the process of multiparty editing and sharing of the DNA storage information, the application realizes the safe sharing of the DNA storage data by introducing hierarchical deterministic key indexes to carry out identity authentication and authority management on operators. Aiming at the efficiency problem in DNA storage information processing, the application introduces a DNA information update state machine based on an incremental storage model structure, and realizes high-efficiency reading of DNA storage data by tracing a series of processes and methods such as file index, file link reorganization, incremental information execution, data form restoration and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for incremental information management based on DNA storage according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a specific flow chart of a method for incremental information management based on DNA storage according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of hierarchical deterministic key indexing in a method for incremental information management based on DNA storage according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a DNA information update state machine in an incremental information management method based on DNA storage according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an incremental information management device based on DNA storage according to an embodiment of the present application.
Detailed Description
Hereinafter, various embodiments of the present disclosure will be more fully described. The present disclosure is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the various embodiments of the disclosure to the specific embodiments disclosed herein, but rather the disclosure is to be interpreted to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the disclosure.
The terminology used in the various embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the disclosure. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of this disclosure belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in the various embodiments of the disclosure.
Example 1
The embodiment 1 of the application discloses a method for managing incremental information based on DNA storage, which is shown in figure 1 and comprises the following steps:
step A, an incremental storage model structure based on Merkle-DAG is used for positioning a DNA storage data file block according to a file index;
step B, reorganizing the DNA storage data file blocks to obtain an initial file before incremental operation as a reorganized file;
step C, a link reorganization incremental information file is based on an incremental storage structure of Merkle-DAG;
step D, reading and sequentially executing each increment operation in the recombined increment information file until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file;
and E, performing reading operation on the final file.
In a specific embodiment, before step a, the method further comprises: and F, carrying out identity authentication, and acquiring a reading authority after the identity authentication passes.
Specifically, as shown in fig. 2, the present solution may be divided into 7 steps: 1) Identity authentication is carried out through the hierarchical deterministic key index, and reading permission is obtained; 2) Tracing back the Hash index of Merkle-DAG, and linking file information; 3) The file is recombined through file index link information; 4) Tracing the Hash index link increment information of Merkle-DAG; 5) Gradually executing increment operation on the reorganized file through the DNA information updating state machine; 6) Restoring to obtain the final form of the DNA storage information, namely a final file; 7) And performing a read operation on the final file.
Through the 7 steps, the reading of the DNA storage information can be completed once. Therefore, the scheme solves the safety problem of reading the DNA storage information in the multiparty editing scene by introducing an identity authentication and authority management and control mechanism; and the efficient reading of the DNA storage information is completed through index linking, recombination and DNA information updating state machines of the original file.
Specifically, the step F specifically includes: identity authentication is carried out through the hierarchical deterministic key index, and reading permission is obtained after the identity authentication is passed; wherein the hierarchical deterministic key index employs a multi-layer authorization mechanism; the higher the layer number of nodes in the multi-layer authorization mechanism, the lower the corresponding authorization authority, and the node at the lowest layer corresponds to the highest authorization authority; and in the nodes of two adjacent layers, after the nodes of the lower layer carry out identity authentication on the nodes of the higher layer, the authorization authentication is improved for the nodes of the higher layer. As shown in fig. 3, when the DNA storage information is first read, identity authentication is performed through the hierarchical deterministic key index to obtain the read authority. The key index uses a multi-layer authorization mechanism, as shown in fig. 1, taking a three-layer structure as an example, the first layer L1 root node has the highest authorization authority, and performs identity authentication on each mechanism of the second layer L2, and after the root node identity authentication, L2 can provide authorization authentication for the child nodes of the L3 mechanism.
In a specific embodiment, the incremental operation includes: an information adding operation, an information deleting operation, an information modifying operation and an information inquiring operation.
Further, the step A is specifically that the Hash index of the Merkle-DAG is traced back by the incremental storage model structure based on the Merkle-DAG, and then the DNA storage data file block is positioned according to the Hash index of the Merkle-DAG.
As shown in fig. 4, the step B specifically includes: and after locating the DNA storage data file blocks according to the indexes, sequentially reorganizing the file blocks. After the reorganization is completed, the reorganized file is the initial file before the incremental operation.
The step C specifically comprises the following steps: and tracing the Hash index of the Merkle-DAG based on the increment storage structure of the Merkle-DAG, and positioning and linking the recombined increment information file according to the Hash index of the Merkle-DAG.
Specifically, similar to step a and step B, the step C is based on the incremental storage structure of Merkle-DAG, and the incremental information file is located and linked according to the index.
The step D specifically comprises the following steps: and reading and sequentially executing each increment operation in the recombined increment information file through the DNA information updating state machine until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file.
As shown in fig. 4, each increment operation in the increment file is read and executed in sequence:
1. setting a reorganization file F, wherein the initial state of the reorganization file F is S0 and is marked as (F, S0);
2. reading a corresponding incremental information file to obtain a first piece of incremental information M1 (added, deleted, changed or searched);
3. performing M1 increment operation on (F, S0), wherein the F state is S1 after the operation is finished, namely (F, S1);
4. acquiring the next increment information M2, and performing M2 operation on (F, S1) to obtain (F, S2);
5. and pushing in this way, repeating the operation until the increment information is completely executed, and obtaining a final file (F, sn). The final file F' = (F, sn) is the current latest version of the required file to be read.
The read operation is subsequently completed on file F'.
The reading model based on DNA storage information increment management has the following advantages relative to the traditional DNA storage information:
1. aiming at the safety problem existing in the process of multiparty editing and sharing of the DNA storage information, the application realizes the safe sharing of the DNA storage data by introducing the hierarchical deterministic key index to carry out identity authentication and authority management on operators.
2. Aiming at the efficiency problem in DNA storage information processing, the application introduces a DNA information update state machine based on an incremental storage model structure, and realizes the efficient reading of DNA storage data by tracing a series of processes and methods such as file index, file link reorganization, incremental information execution, data form restoration and the like.
Example 2
In order to further explain the scheme of the present application, embodiment 2 of the present application also discloses an incremental information management device based on DNA storage, as shown in fig. 5, which includes the following modules:
the positioning module 201 is configured to position a DNA storage data file block according to a file index based on an incremental storage model structure of Merkle-DAG;
the reorganization module 202 is configured to reorganize the DNA storage data file blocks to obtain an initial file before performing an incremental operation as a reorganized file;
a link module 203, configured to link and reorganize the incremental information file based on the incremental storage structure of the Merkle-DAG;
the execution module 204 is configured to read and sequentially execute each increment operation in the reorganized increment information file until all increment operations are performed completely, and obtain a current latest version file of the DNA storage information as a final file;
and the reading module 205 is used for performing a reading operation on the final file.
In a specific embodiment, as shown in the figure, further comprising: and the permission module 206 is used for carrying out identity authentication and acquiring the reading permission after the identity authentication passes.
In a specific embodiment, the rights module 206 is specifically configured to: identity authentication is carried out through the hierarchical deterministic key index, and reading permission is obtained after the identity authentication is passed; wherein the hierarchical deterministic key index employs a multi-layer authorization mechanism; the higher the layer number of nodes in the multi-layer authorization mechanism, the lower the corresponding authorization authority, and the node at the lowest layer corresponds to the highest authorization authority; and in the nodes of two adjacent layers, after the nodes of the lower layer carry out identity authentication on the nodes of the higher layer, the authorization authentication is improved for the nodes of the higher layer.
In a specific embodiment, the incremental operation includes: an information adding operation, an information deleting operation, an information modifying operation and an information inquiring operation.
In a specific embodiment, the linking module 203 is configured to:
and tracing the Hash index of the Merkle-DAG based on the increment storage structure of the Merkle-DAG, and positioning and linking the recombined increment information file according to the Hash index of the Merkle-DAG.
In a specific embodiment, the execution module 204 is configured to:
and reading and sequentially executing each increment operation in the recombined increment information file through the DNA information updating state machine until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file.
Those skilled in the art will appreciate that the drawing is merely a schematic illustration of a preferred implementation scenario and that the modules or flows in the drawing are not necessarily required to practice the application.
Those skilled in the art will appreciate that modules in an apparatus in an implementation scenario may be distributed in an apparatus in an implementation scenario according to an implementation scenario description, or that corresponding changes may be located in one or more apparatuses different from the implementation scenario. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The above-mentioned inventive sequence numbers are merely for description and do not represent advantages or disadvantages of the implementation scenario.
The foregoing disclosure is merely illustrative of some embodiments of the application, and the application is not limited thereto, as modifications may be made by those skilled in the art without departing from the scope of the application.
Claims (10)
1. The incremental information management method based on DNA storage is characterized by comprising the following steps:
step A, an incremental storage model structure based on Merkle-DAG is used for positioning a DNA storage data file block according to a file index;
step B, reorganizing the DNA storage data file blocks to obtain an initial file before incremental operation as a reorganized file;
step C, a link reorganization incremental information file is based on an incremental storage structure of Merkle-DAG;
step D, reading and sequentially executing each increment operation in the recombined increment information file until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file;
and E, performing reading operation on the final file.
2. The method of claim 1, wherein prior to step a, the method further comprises: and F, carrying out identity authentication, and acquiring a reading authority after the identity authentication passes.
3. The method according to claim 2, wherein said step F comprises in particular: identity authentication is carried out through the hierarchical deterministic key index, and reading permission is obtained after the identity authentication is passed; wherein the hierarchical deterministic key index employs a multi-layer authorization mechanism; the higher the layer number of nodes in the multi-layer authorization mechanism, the lower the corresponding authorization authority, and the node at the lowest layer corresponds to the highest authorization authority; and in the nodes of two adjacent layers, after the nodes of the lower layer carry out identity authentication on the nodes of the higher layer, the authorization authentication is improved for the nodes of the higher layer.
4. The method of claim 1, wherein the incremental operation comprises: an information adding operation, an information deleting operation, an information modifying operation and an information inquiring operation.
5. The method according to claim 1, wherein said step C specifically comprises:
and tracing the Hash index of the Merkle-DAG based on the increment storage structure of the Merkle-DAG, and positioning and linking the recombined increment information file according to the Hash index of the Merkle-DAG.
6. The method according to claim 1, wherein said step D specifically comprises:
and reading and sequentially executing each increment operation in the recombined increment information file through the DNA information updating state machine until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file.
7. An incremental information management apparatus based on DNA storage, comprising the following modules:
the positioning module is used for positioning the DNA storage data file block according to the file index based on the incremental storage model structure of the Merkle-DAG;
the reorganization module is used for reorganizing the DNA storage data file blocks to obtain an initial file before incremental operation as a reorganized file;
the link module is used for linking and reorganizing the increment information file based on the increment storage structure of the Merkle-DAG;
the execution module is used for reading and sequentially executing each increment operation in the recombined increment information file until all increment operations are completely executed to obtain a current latest version file of the DNA storage information as a final file;
and the reading module is used for carrying out reading operation on the final file.
8. The apparatus as recited in claim 7, further comprising: and the permission module is used for carrying out identity authentication and acquiring the reading permission after the identity authentication passes.
9. The device according to claim 8, wherein the rights module is specifically configured to: identity authentication is carried out through the hierarchical deterministic key index, and reading permission is obtained after the identity authentication is passed; wherein the hierarchical deterministic key index employs a multi-layer authorization mechanism; the higher the layer number of nodes in the multi-layer authorization mechanism, the lower the corresponding authorization authority, and the node at the lowest layer corresponds to the highest authorization authority; and in the nodes of two adjacent layers, after the nodes of the lower layer carry out identity authentication on the nodes of the higher layer, the authorization authentication is improved for the nodes of the higher layer.
10. The apparatus of claim 7, wherein the incremental operation comprises: an information adding operation, an information deleting operation, an information modifying operation and an information inquiring operation.
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| CN111091876A (en) * | 2019-12-16 | 2020-05-01 | 中国科学院深圳先进技术研究院 | DNA storage method, system and electronic equipment |
| CN111090622A (en) * | 2019-10-18 | 2020-05-01 | 西安电子科技大学 | Cloud storage information processing system and method based on dynamic encryption RBAC model |
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| US20040268068A1 (en) * | 2003-06-24 | 2004-12-30 | International Business Machines Corporation | Efficient method for copying and creating block-level incremental backups of large files and sparse files |
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| CN111090622A (en) * | 2019-10-18 | 2020-05-01 | 西安电子科技大学 | Cloud storage information processing system and method based on dynamic encryption RBAC model |
| CN111091876A (en) * | 2019-12-16 | 2020-05-01 | 中国科学院深圳先进技术研究院 | DNA storage method, system and electronic equipment |
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