CN104392178A - Using method of embedded system with data splitting and encrypting function - Google Patents
Using method of embedded system with data splitting and encrypting function Download PDFInfo
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- CN104392178A CN104392178A CN201410737314.XA CN201410737314A CN104392178A CN 104392178 A CN104392178 A CN 104392178A CN 201410737314 A CN201410737314 A CN 201410737314A CN 104392178 A CN104392178 A CN 104392178A
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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
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
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Abstract
The invention relates to a using method of an embedded system with a data splitting and encrypting function. The stored data of the embedded system are effectively separated and stored by splitting and encrypting; the embedded system divides read-in data into body information data and extraction information data on the basis of full-text correlation conversion by taking data blocks as units when writing data to an off-chip nonvolatile memory and respectively writes in different storage media, and file data are safely and effectively separated and stored; the embedded system can read the stored data in the off-chip memory only based on the body information data, the extraction information data correlation and inverse transformation. The using method effectively overcomes various defects in information safety management of existing embedded systems, provides a new, safe and easy method for nonproliferation, anti-theft and anti-crack information safety of the embedded system and resultantly provides an advanced protection function for the embedded system.
Description
Technical field
The present invention relates to embedded system field, particularly relate to a kind of using method with the embedded system of Data Division encryption function.
Background technology
Embedded system be application-centered, based on computer technology, hardware and software can cutting, adapt to application system to function, reliability, cost, volume, power consumption be strict with dedicated computer system.Along with the develop rapidly of embedded technology, embedded product has been widely used in Industry Control, traffic administration, information household appliances, furniture intelligent management system, POS (Point ofSale) every field such as network and ecommerce.But along with the fast development of infotech, the safety management of consumer to embedded system is had higher requirement.Therefore, how to realize embedded system to store the non-proliferation of information, Anti-theft, anti-ly to crack thus the safety management tool realizing embedded system is of great significance.
Traditional embedded device generally adopts processor to add the framework of nonvolatile memory, system code leaves in nonvolatile memory with plaintext version, be very easy to obtain when third party obtains the nonvolatile memory of embedded system and crack the relevant information of this embedded system, therefore there is great information security hidden danger with the embedded system of plaintext version stores system code.Along with the development of information security, some embedded system production firms have recognized the importance that embedded system security manages, be stored in nonvolatile memory after Embedded System Code is encrypted, and in key storage encryption adopted and the embedded nonvolatile memory of controller, the security of obvious embedded system has had very big raising.But, even if cryptographic algorithm good more still has the possibility be decrypted, when third party obtains interactive interfacing information between nonvolatile memory and controller and non-volatile main memory, the key of embedded system encryption will very easily be cracked, and embedded-type security is now faced with great challenge.
Therefore, in embedded technology and information security technology develop rapidly instantly, how to realize embedded system to store the non-proliferation of information, Anti-theft, anti-ly crack thus realize the safety management of embedded system, become embedded system practitioner problem demanding prompt solution.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of using method with the embedded system of Data Division encryption function, stores the safety problem of information management for solving embedded system in prior art.
For achieving the above object and other relevant objects, the invention provides a kind of using method with the embedded system of Data Division encryption function, comprise following process:
When writing data, in units of data block, the Data Division run in volatile storage in sheet being encrypted to based on control module and detaching information data and main information data, and respectively stored in sheet inner nonvolatile memory and the outer nonvolatile memory of sheet;
When sense data, based on described control module by described inner nonvolatile memory and described outer non-volatile memory storage detach information data and main information data merge deciphering, and stored in described interior volatile storage.
Preferably, described in there is the embedded system of Data Division encryption function using method be applied to embedded system, described embedded system at least comprises:
Controller and the outer nonvolatile memory of sheet, described controller comprises described control module, described interior volatile storage and described inner nonvolatile memory;
Described control module connects described interior volatile storage, described inner nonvolatile memory and described outer nonvolatile memory, for the Data Division in described interior volatile storage is encrypted to detach information data and main information data after be stored into described inner nonvolatile memory and described outer nonvolatile memory, or described interior volatile storage is stored in detaching after information data and main information data merge deciphering in described inner nonvolatile memory and described outer nonvolatile memory;
Described interior volatile storage is connected to described control module, described inner nonvolatile memory and described outer nonvolatile memory, for storage running data, by described control module control realization described in data in sheet between volatile storage and described inner nonvolatile memory and described outer nonvolatile memory transmit;
Described inner nonvolatile memory is connected to described control module and described interior volatile storage, detach information data for storing, by described control module control realization described in data between sheet inner nonvolatile memory and described interior volatile storage transmit;
Described outer nonvolatile memory is connected to described control module and described interior volatile storage, for storing main information data, by described control module control realization described in the outer data between nonvolatile memory and described interior volatile storage of sheet transmit.
Preferably, in units of data block, the Data Division in described interior volatile storage is encrypted to and detaches information data and main information data, and write in different storage mediums respectively, the wherein said information data that detaches is written into described inner nonvolatile memory, and described main information data are written into described outer nonvolatile memory.
More preferably, detach described in information data be by the data being written into described outer nonvolatile memory based on data block for unit carry out correlative transformation in full after the data obtained information, respective point position, length and the conversion parameter that are extracted when detaching information data described in obtaining be the data of key parameter.
More preferably, described main information data be by the data being written into described outer nonvolatile memory based on data block for unit carry out correlative transformation in full after the data opposite position of random-length byte number that is extracted when detaching information data described in obtaining of the data obtained carry out the corresponding data that random scrambler backfill obtains.
More preferably, the process writing data comprises the following steps:
21) data being written into described outer nonvolatile memory are carried out full text correlative transformation in units of data block;
22) data obtained based on described correlative transformation extract the data of random-length byte in units of data block, obtain correspondingly to detach information data;
23) described inner nonvolatile memory is sequentially written in detaching information data described in extraction gained by logical block number (LBN);
24) the data opposite position of the random-length byte number be extracted by described correlative transformation the data obtained carries out random scrambler backfill, obtains corresponding main information data;
25) described main information data are sequentially written in described outer nonvolatile memory by logical block number (LBN).
More preferably, the process of sense data comprises the following steps:
31) the corresponding main information data in described outer nonvolatile memory are read in described interior volatile storage by described control module;
32) information data is detached described in described control module auto-associating;
33) the corresponding information data that detaches be stored in described inner nonvolatile memory is read in described interior volatile storage by described control module;
34) described control module in described interior volatile storage based on corresponding main information data and detach information data and carry out restoring transformation, thus data corresponding before obtaining splitting encryption.
As mentioned above, the using method with the embedded system of Data Division encryption function of the present invention, has following beneficial effect:
The using method with the embedded system of Data Division encryption function of the present invention, by split encryption realize embedded system store effective Separate Storage of data; Embedded system will be written into data based on splitting into main information data after full text correlative transformation and detaching information data when data write by nonvolatile memory outside sheet in units of data block, and write different storage mediums respectively, realize the safe and effective Separate Storage of file data; Embedded system must based on main information data and detach the operation such as information data association, inverse transformation just can realize in chip external memory store the read operation of data.The present invention effectively overcomes the various shortcoming in the information security management of existing embedded system, for embedded system non-proliferation, Anti-theft, the anti-information security cracked provide a kind of safe and easy-to-use new method, thus can be embedded system height safeguard function is provided.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation with the embedded system of Data Division encryption function of the present invention.
Fig. 2 is shown as the schematic flow sheet with the embedded system write data of Data Division encryption function of the present invention.
Fig. 3 is shown as the schematic flow sheet with the embedded system sense data of Data Division encryption function of the present invention.
Element numbers explanation
1 embedded system with Data Division encryption function
11 controllers
111 control modules
112 interior volatile storagies
113 inner nonvolatile memories
12 outer nonvolatile memorys
The step of 21 ~ 25 write data
The step of 31 ~ 34 sense datas
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
Refer to Fig. 1 ~ Fig. 3.It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
Embodiment one
As shown in Figure 1, the invention provides a kind of using method with the embedded system of Data Division encryption function, described in there is the embedded system of Data Division encryption function using method be applied to embedded system 1, described embedded system 1 at least comprises:
Controller 11 and the outer nonvolatile memory 12 of sheet, described controller 11 comprises volatile storage 112 and sheet inner nonvolatile memory 113 in control module 111, sheet.
Described control module 111 connects described interior volatile storage 112, described inner nonvolatile memory 113 and described outer nonvolatile memory 12, for the Data Division in described interior volatile storage 112 is encrypted to detach information data and main information data after be stored into described inner nonvolatile memory 113 and described outer nonvolatile memory 12, or described interior volatile storage 112 is stored in detaching after information data and main information data merge deciphering in described inner nonvolatile memory 113 and described outer nonvolatile memory 12.
Described interior volatile storage 112 is connected to described control module 111, described inner nonvolatile memory 113 and described outer nonvolatile memory 12, for storage running data, by described control module 111 control realization described in data in sheet between volatile storage 112 and described inner nonvolatile memory 113 and described outer nonvolatile memory 12 transmit.
Described inner nonvolatile memory 113 is connected to described control module 111 and described interior volatile storage 112, detach information data for storing, by described control module 111 control realization described in data between sheet inner nonvolatile memory 113 and described interior volatile storage 112 transmit.
Described outer nonvolatile memory 12 is connected to described control module 111 and described interior volatile storage 112, for storing main information data, by described control module 111 control realization described in the outer data between nonvolatile memory 12 and described interior volatile storage 112 of sheet transmit.
Particularly, detach described in information data be by the data being written into described outer nonvolatile memory 12 based on data block for unit carry out correlative transformation in full after the data obtained information, respective point position, length and the conversion parameter that are extracted when detaching information data described in obtaining be the data of key parameter.
Particularly, described main information data be by the data being written into described outer nonvolatile memory 12 based on data block for unit carry out correlative transformation in full after the data opposite position of random-length byte number that is extracted when detaching information data described in obtaining of the data obtained carry out the corresponding data that random scrambler backfill obtains.
Particularly, in units of data block, the Data Division in described interior volatile storage 112 is encrypted to and detaches information data and main information data, and separately write in different storage mediums, detach namely that information data writes in described inner nonvolatile memory 113, described main information data write in described outer nonvolatile memory 12.
Embodiment two
As shown in FIG. 1 to 3, the invention provides a kind of using method with the embedded system of Data Division encryption function, comprise following process:
As shown in Figure 1, when writing data, in units of data block, the Data Division run in volatile storage in sheet 112 is encrypted to based on control module 111 and detaches information data and main information data, and respectively stored in sheet inner nonvolatile memory 113 and the outer nonvolatile memory 12 of sheet.
Particularly, detach described in information data be by the data being written into described outer nonvolatile memory 12 based on data block for unit carry out correlative transformation in full after the data obtained information, respective point position, length and the conversion parameter that are extracted when detaching information data described in obtaining be the data of key parameter.
Particularly, described main information data be by the data being written into described outer nonvolatile memory 12 based on data block for unit carry out correlative transformation in full after the data opposite position of random-length byte number that is extracted when detaching information data described in obtaining of the data obtained carry out the corresponding data that random scrambler backfill obtains.
As shown in Figure 2, particularly, the process writing data comprises the following steps:
21) data being written into described outer nonvolatile memory 12 are carried out full text correlative transformation in units of data block.
22) data obtained based on described correlative transformation extract the data of random-length byte in units of data block, obtain correspondingly to detach information data.
23) described inner nonvolatile memory 113 is sequentially written in detaching information data described in extraction gained by logical block number (LBN).
24) the data opposite position of the random-length byte number be extracted by described correlative transformation the data obtained carries out random scrambler backfill, obtains corresponding main information data.
25) described main information data are sequentially written in described outer nonvolatile memory 12 by logical block number (LBN).
As shown in Figure 1, when sense data, information data and main information data merging deciphering is detached by what store in described inner nonvolatile memory 113 and described outer nonvolatile memory 12 based on described control module 111, and stored in described interior volatile storage 112.
As shown in Figure 3, particularly, the process of sense data comprises the following steps:
31) the corresponding main information data in described outer nonvolatile memory 12 are read in described interior volatile storage 112 by described control module 111.
32) information data is detached described in described control module 111 auto-associating.
33) the corresponding information data that detaches be stored in described inner nonvolatile memory 113 is read in described interior volatile storage 112 by described control module 111.
34) described control module 111 in described interior volatile storage 112 based on corresponding main information data and detach information data and carry out restoring transformation, thus data corresponding before obtaining splitting encryption.
In sum, the invention provides a kind of using method with the embedded system of Data Division encryption function, by split encryption realize embedded system store effective Separate Storage of data; Embedded system will be written into data based on splitting into main information data after full text correlative transformation and detaching information data when data write by nonvolatile memory outside sheet in units of data block, and by main information data and detach information data and write different storage mediums respectively, realize the safe and effective Separate Storage of file data; Embedded system must based on main information data and detach the operation such as information data association, inverse transformation just can realize in chip external memory store the read operation of data.The present invention effectively overcomes the various shortcoming in the information security management of existing embedded system, for embedded system non-proliferation, Anti-theft, the anti-information security cracked provide a kind of safe and easy-to-use new method, thus can be embedded system height safeguard function is provided.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (7)
1. there is a using method for the embedded system of Data Division encryption function, it is characterized in that, comprise following process:
When writing data, in units of data block, the Data Division run in volatile storage in sheet being encrypted to based on control module and detaching information data and main information data, and respectively stored in sheet inner nonvolatile memory and the outer nonvolatile memory of sheet;
When sense data, based on described control module by described inner nonvolatile memory and described outer non-volatile memory storage detach information data and main information data merge deciphering, and stored in described interior volatile storage.
2. the using method with the embedded system of Data Division encryption function according to claim 1, it is characterized in that, the described using method with the embedded system of Data Division encryption function is applied to embedded system, and described embedded system at least comprises:
Controller and the outer nonvolatile memory of sheet, described controller comprises described control module, described interior volatile storage and described inner nonvolatile memory;
Described control module connects described interior volatile storage, described inner nonvolatile memory and described outer nonvolatile memory, for the Data Division in described interior volatile storage is encrypted to detach information data and main information data after be stored into described inner nonvolatile memory and described outer nonvolatile memory, or described interior volatile storage is stored in detaching after information data and main information data merge deciphering in described inner nonvolatile memory and described outer nonvolatile memory;
Described interior volatile storage is connected to described control module, described inner nonvolatile memory and described outer nonvolatile memory, for storage running data, by described control module control realization described in data in sheet between volatile storage and described inner nonvolatile memory and described outer nonvolatile memory transmit;
Described inner nonvolatile memory is connected to described control module and described interior volatile storage, detach information data for storing, by described control module control realization described in data between sheet inner nonvolatile memory and described interior volatile storage transmit;
Described outer nonvolatile memory is connected to described control module and described interior volatile storage, for storing main information data, by described control module control realization described in the outer data between nonvolatile memory and described interior volatile storage of sheet transmit.
3. the using method with the embedded system of Data Division encryption function according to claim 1, it is characterized in that: in units of data block, the Data Division in described interior volatile storage is encrypted to and detaches information data and main information data, and write in different storage mediums respectively, the wherein said information data that detaches is written into described inner nonvolatile memory, and described main information data are written into described outer nonvolatile memory.
4. the using method with the embedded system of Data Division encryption function according to claim 3, is characterized in that: described in detach information data be by the data being written into described outer nonvolatile memory based on data block for unit carry out correlative transformation in full after the data obtained information, respective point position, length and the conversion parameter that are extracted when detaching information data described in obtaining be the data of key parameter.
5. the using method with the embedded system of Data Division encryption function according to claim 3, is characterized in that: described main information data be by the data being written into described outer nonvolatile memory based on data block for unit carry out correlative transformation in full after the data opposite position of random-length byte number that is extracted when detaching information data described in obtaining of the data obtained carry out the corresponding data that random scrambler backfill obtains.
6. the using method with the embedded system of Data Division encryption function according to claim 3, is characterized in that, the process of write data comprises the following steps:
21) data being written into described outer nonvolatile memory are carried out full text correlative transformation in units of data block;
22) data obtained based on described correlative transformation extract the data of random-length byte in units of data block, obtain correspondingly to detach information data;
23) described inner nonvolatile memory is sequentially written in detaching information data described in extraction gained by logical block number (LBN);
24) the data opposite position of the random-length byte number be extracted by described correlative transformation the data obtained carries out random scrambler backfill, obtains corresponding main information data;
25) described main information data are sequentially written in described outer nonvolatile memory by logical block number (LBN).
7. the using method with the embedded system of Data Division encryption function according to claim 3, is characterized in that, the process of sense data comprises the following steps:
31) the corresponding main information data in described outer nonvolatile memory are read in described interior volatile storage by described control module;
32) information data is detached described in described control module auto-associating;
33) the corresponding information data that detaches be stored in described inner nonvolatile memory is read in described interior volatile storage by described control module;
34) described control module in described interior volatile storage based on corresponding main information data and detach information data and carry out restoring transformation, thus data corresponding before obtaining splitting encryption.
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| CN201410737314.XA CN104392178B (en) | 2014-12-05 | 2014-12-05 | A kind of application method for the embedded system that encryption function is split with data |
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| CN105159611A (en) * | 2015-09-01 | 2015-12-16 | 南京伍安信息科技有限公司 | Microcontroller chip with data extraction encryption function |
| CN105426775A (en) * | 2015-11-09 | 2016-03-23 | 北京联合大学 | Method and system for protecting information security of smartphone |
| CN106778371A (en) * | 2016-12-23 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of plug type hardware encryption storage method, system |
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| CN104392178B (en) | 2017-08-15 |
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