CN1109300C - Method and appts. of transparent protection for computer rigid disk storage contents - Google Patents
Method and appts. of transparent protection for computer rigid disk storage contents Download PDFInfo
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- CN1109300C CN1109300C CN97115085A CN97115085A CN1109300C CN 1109300 C CN1109300 C CN 1109300C CN 97115085 A CN97115085 A CN 97115085A CN 97115085 A CN97115085 A CN 97115085A CN 1109300 C CN1109300 C CN 1109300C
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Abstract
The present invention relates to a method for transparently protecting the storage contents of a computer hard disk. A record index table is established, and a mapping region for the contents of a protected hard disk is established in a free region of the hard disk; the write operation of the mapping region is used in the place of the access of a protected region, and thereby, the transparent protection of the storage contents of the hard disk is realized. The hardware of the present invention is composed of a read-only memory solidified with control software and a control circuit composed of a non-volatile read-write memory and a decoding logic circuit for storing an index list of the access records of the hard disk and system variables, wherein the circuit can have combination and installation modes of different forms.
Description
The present invention relates to a kind of method and device thereof of transparent protection for computer rigid disk storage contents, belong to the Computer Applied Technology field.
Along with popularizing that microcomputer is used, the Dos of various version, Windows, Win95 and the extensive of application software exchange, the phenomenon of bootlegging floppy disk is quite serious, add the strict system of lack of control of machine, make that personal computer system's software environment and hardware environment are complicated day by day, cause the computer virus rapid spread, the English level of adding common people is limited, cause software to install or improper use thus, maloperations etc. usually make the work of microsystem system break down, and gently then reduce travelling speed, create disturbances to normal operation, heavy then destroy data, damage the canned data resource, so that system crash.This phenomenon often occurs in links such as computer teaching, Windows teaching, network system and office automation, and its maintenance workload is big, the complexity of process, often makes the computer support staff forbidding.So microcomputer market in urgent need at present solves software systems break down after the difficult problem of fast quick-recovery how.
At present, the method for file system is to add a write-protect switch to hard disk in the domestic and international common employing hardware protection hard disk of microcomputer, is only permitted during work to read, forbid writing, and reaches the purpose of protection hard-disk content thus.As if but this method makes hard disk lose its prior half function virtually, makes most of softwares can't operate as normal, so this hard disk write-protecting switch is also accepted by market from the end.Also having a kind of is the common anti-technology of killing the virus, and still, this antivirus card can only be handled existing computer virus, and various novel or variant virus have just been had no way out, and also can't thoroughly solve problems such as the software compatibility and human operational error.In fact, the problem that above-mentioned microcomputer software and hard disk break down also occurs on the various large, medium and small type computing machines distinct program.
The transparency protected method and the device thereof that the purpose of this invention is to provide a kind of computer rigid disk storage contents; this method and device not only can be realized " write-protect " of hard disk; also can realize simultaneously the function of " write by "; thereby reliable and practical " transparent shielding " formula safeguard protection can be provided the current file system in the hard disc of computer, prevent that computer virus or other people from destroying the file content of hard-disc storage for reasons such as improper uses.
Transparency protected method step of the present invention is achieved in that
(1) at first on hard disk, delimit and to carry out transparency protected software information storage area, and it be defined as protection system or primal system;
(2) opening up one in the free area of hard disk carries out the transparency protected corresponding mapping area of protection system storage area and (or claims: mirror area) with above-mentioned;
(3) with above-mentioned mapping area, add the free space on the hard disk, constitute the current system that uses for the user, thereby in this hard disk, set up two software information storage areas simultaneously: protection system and current system;
(4) in the storer of computing machine, set up the recording indexes table of protection system software storage area read and write access, and with the whole zero clearings of all record variables in this concordance list;
When certain record variable is 0, represent in the current system that this content that writes down corresponding hard disk information storage unit is not rewritten;
When certain record variable is 1, represent in the current system, this content that writes down corresponding hard disk information storage unit is rewritten, be the mapping area that new information has write this record in the current system, so the content of the corresponding hard disk information storage unit in its content and the protection system is inequality;
(5), or, set up the transparency protected policy control method that hard disk has intelligence by hardware approach by expansion, modification to BIOS:
(A) read-write operation of the each access hard disk of computing machine all will at first remove to read above-mentioned recording indexes table, and determine to read and write storage area in which system according to the variable 0,1 of record:
A, when operating system will be carried out read operation to the information memory cell of hard disk record, should write down pairing variable in the recording indexes table of inspection storage area read and write access earlier, as be 0, then can directly read information in the respective memory regions from protection system; As be 1, then should transfer in the corresponding stored zone in the current system and read information; And the record variable of the recording indexes table correspondence of storage area read and write access is constant;
B, when operating system will be carried out write operation to the information memory cell of hard disk record, then directly this information is write the mapped memory region of this record storage unit in the current system, simultaneously, this corresponding in the recording indexes table of storage area read and write access record variable is rewritten as 1;
(B) as upgrading the protection operation, then at first scanning checks that one by one each writes down pairing variable in the recording indexes table of storage area read and write access, as be 1, then earlier with in this record corresponding stored zone in the information content write protection system of this record place storage area in the current system, then, revise this record variable, making it is 0, and signs in in the above-mentioned recording indexes table; As this record variable is 0, then can not carry out aforesaid operations and keeps ortho states;
(C) after protection system was set up, the user needed system reset, and when assigning command adapted thereto by operating system, then with all variable zero clearings of record of above-mentioned recording indexes table.
Transparency protected device of the present invention is achieved in that and includes: the control circuit that central processing unit, ROM (read-only memory), non-volatile read-write memory and address decoding logic circuit are formed is characterized in that: the ROM (read-only memory) in the above-mentioned control circuit is used to store the transparency protected policy control method software of hard disk; Non-volatile read-write memory is then deposited the recording indexes table and the system variable of protection system software storage area read and write access; Central processing unit is on the hard disk controller or the central processing unit of hard disk setting itself.
Above-mentioned control circuit can be installed on the printed circuit board (PCB) plug-in card with PC series mini computing machine external bus insert row.
Above-mentioned control circuit also can be directly installed on the motherboard of computing machine.
Above-mentioned control circuit can also be directly on the circuit board of the hard disk controller that is provided with MPU microprocessor, extensive gate array logic device and non-volatile read-write memory; at this moment, the transparency protected policy control method software of hard disk is stored in the ROM (read-only memory) that MPU uses, the recording indexes table of protection system software storage area read and write access is stored on non-volatile read-write memory or the disc sheet.
The transparency protected control circuit of above-mentioned hard disk controller can be installed in and have on the independently hard disk controller circuit plate of introducing/draw the hard-disk interface line, and at this moment, this control circuit needs external power supply.
The transparency protected control circuit of above-mentioned hard disk controller also can integratedly be installed on the control circuit board of hard disk.
The transparency protected control circuit of above-mentioned hard disk controller also can integratedly be installed on the motherboard of computing machine.
On the circuit board of above-mentioned hard disk controller, can be provided with the interface circuit that continues with Ethernet.
The present invention be directed to current microcomputer and be installed in the interior software of system disk huge day by day and complicated (the file system scale that leaves in the hard disk often reaches hundreds of～thousands of megabyte); during computer operation, the reality that file operation frequently is easy to destroyed (comprising reasons such as human error, computer virus) and the current file system at storing in the hard disk that provides protect transparency protected method and the device thereof with a kind of thought innovation of file system full recovery function totally.
The method of " transparency protected " rigid disk storage contents that the present invention proposes is a kind of in realization " software solidification ", does not influence the software system protection method of its read-write operation again.It had both made the software systems in the hard disk solidify, and as using huge, airtight, a transparent cover, protected software systems was given on the cover, enabled to resist the erosion of multiple virus and human error; Can accomplish that again dirigibility, complicacy to various software runtime environments are approved, make the user still can carry out read-write operation saved software system in this hard disk.
Principal feature of the present invention is: when making application program carry out " reading; write " visit to the hard disk protected area; set up " mapping area " (or title " mirrored content ") of above-mentioned protected area in the hard disk clear area by setting up concordance list; and by expansion to BIOS; revise or hardware approach; to substitute visit to the read-write operation of this mapping area to original protected area; thereby simultaneously in " write-protect " that realize this protected content; can realize application program desired " write by " or " write can " again, really realize " transparent shielding " function of the protected content of hard disk.And when the user needs the recovery system file; the present invention is then with all record variable zero clearings of above-mentioned concordance list; after this; just can directly enter the protected area and carry out read operation; then still write mapping area corresponding in the current system for write operation, simultaneously with the corresponding record variable set of concordance list.The present invention that Here it is realizes the working mechanism that rigid disk storage contents is transparency protected.In fact, the present invention also is a kind of wide spectrum anti-viral method and device of not eliminating at concrete a certain class or a certain computer virus thereof, it can effectively prevent various existing or issuable from now on new virus or the variant virus further destruction to hard-disk content, its design philosophy novelty, circuit structure is simple, the hardware cost of manufacture is lower, is a kind of hard disk anti-virus method and device that has much popularizing application prospect.
Another characteristics of hardware of the present invention are that it can adopt multi-form multiple combination, mounting means, both can adopt the special-purpose plug-in card of expanded BIOS type, or it is integrated on the motherboard; Also it directly can be installed to and have the plug-in card of introducing/draw the hard-disk interface line, or have on the independently hard disk controller of introducing/draw the hard-disk interface line; It directly can also be installed in the hard disk, visual varying environment is selected it respectively for use.
Fig. 1 is a software design idea synoptic diagram of the present invention.
Fig. 2 is one of hardware configuration form of the present invention---the special-purpose plug-in card block scheme of expanded BIOS type.
Fig. 3 is two of a hardware configuration form of the present invention---be integrated into the hardware configuration block scheme of the expanded BIOS type on the motherboard.
Fig. 4 is three of a hardware configuration form of the present invention---the plug-in card block scheme of hard-disk interface line is introduced/is drawn in having of the transparency protected controller type of hard disk.
Fig. 5 is four of a hardware configuration form of the present invention---the independent hard disk controller block scheme of hard-disk interface line is introduced/is drawn in having of the transparency protected controller type of hard disk.
Referring to Fig. 1; the working mechanism that the present invention carries out fixed disk file system " transparent shielding " formula safeguard protection is: when being inserted with computing machine of the present invention at opening initialization, can or adopt hardware approach to obtain the control of disk operating by interception disk interruptive command.In the time of will carrying out write operation to the A district of protection system as application program; the present invention will be by protection recording indexes table; to transfer to current system (mapping area) lining of on the hard disk clear area, setting up to the write operation in A district; promptly be converted into write operation to A ' district; and mapping (mirror image) corresponding relation that record A district=A ' distinguishes on the non-volatile therein read-write memory; so that application program next time is to this zone (A district) when carrying out write access; the present invention will substitute the visit to A ' district the write operation to the A district, offers application program and uses.When application program was carried out read operation to hard disk, the present invention also was first search index table, if A=1 in the table, then this visit is transferred to A ' district, otherwise, still visit the A district.And when the user needed recovery system, as long as the present invention was with all variable zero clearings of record of the mapping of the hard disk on the nonvolatile memory (mirror image) manipulative indexing table.
Transparency protected concrete grammar step of the present invention is achieved in that
(1) at first on hard disk, delimit and to carry out transparency protected software information storage area, and it be defined as " protection system " or " primal system ";
(2) opening up one in the free area of hard disk carries out transparency protected " protection system " storage area corresponding " mapping area " and (or claims: mirror area) with above-mentioned;
(3) with above-mentioned " mapping area ", add the free space on the hard disk, constitute " the current system " that use for the user, thereby in this hard disk, set up two software information storage areas simultaneously: protection system and current system;
(4) in the storer of computing machine, set up " the recording indexes table of protection system software storage area read and write access ", and with the whole zero clearings of all record variables in this concordance list;
When certain record variable is " 0 ", represent in the current system that this content that writes down corresponding hard disk information storage unit is not rewritten;
When certain record variable is " 1 ", represent in the current system, this content that writes down corresponding hard disk information storage unit is rewritten, be that new information has write current system (that is: the mapping area of the record of this in the protection system), so the content of the corresponding hard disk information storage unit in its content and the protection system is inequality;
(5), or, set up the transparency protected policy control method that hard disk has intelligence by hardware approach by expansion, modification to BIOS:
(A) read-write operation of the each access hard disk of computing machine all will at first remove to read above-mentioned " recording indexes table ", and determine to read and write storage area in which system according to variable " 0 ", " 1 " of record:
A, to carry out " reading " when operation to the information memory cell of hard disk record when operating system, check earlier in " the recording indexes table of storage area read and write access " and should write down pairing variable, as be " 0 ", then can directly read information in the respective memory regions from protection system; As be " 1 ", then should transfer in the corresponding stored zone in the current system and read information; And the record variable that " the recording indexes table of storage area read and write access " is corresponding is constant;
B, to carry out " writing " when operation to the information memory cell of hard disk record when operating system, then directly this information is write (being " mapping " storage area of this record storage unit in the protection system) in the current system, simultaneously, this corresponding in " the recording indexes table of storage area read and write access " record variable is rewritten as " 1 ";
(B) as carrying out " upgrading protection " operation, then at first scanning checks that one by one each writes down pairing variable in " the recording indexes table of storage area read and write access ", as be " 1 ", then earlier with in this record corresponding stored zone in the information content write protection system of this record place storage area in the current system, then, revise this record variable, make it to be " 0 ", and sign in in above-mentioned " recording indexes table "; As this record variable is " 0 ", does not then carry out aforesaid operations;
(C) after protection system was set up, the user needed " system reset ", and when assigning command adapted thereto by operating system, then with above-mentioned " recording indexes table " all variable zero clearings of record.
Transparency protected device of the present invention includes central processing unit, read only memory ROM; the control circuit that non-volatile read-write memory and address decoding logic circuit are formed; wherein the ROM (read-only memory) in the control circuit is used to solidify BIOS and " the transparency protected policy control method of hard-disk content " software of expansion, and non-volatile read-write memory is then deposited " the recording indexes table of protection system software storage area read and write access " and system variable.Above-mentioned control circuit can be installed on the printed circuit board (PCB) plug-in card of a microcomputer bus insert row A with PC series (referring to Fig. 2).Above-mentioned control circuit also can be directly installed on the computer main frame panel B, and at this moment, wherein the bus communication relationship of decoding logic circuit, ROM and read-write memory and main frame is referring to shown in Figure 3.Control circuit of the present invention can also be directly installed on the circuit board of the hard disk controller that is provided with MPU microprocessor, extensive gate array logic device and non-volatile read-write memory; at this moment; " the transparency protected policy control method of hard-disk content " software leaves in the ROM of MPU use, and " the recording indexes table of protection system software storage area read and write access " then leaves on non-volatile read-write memory or the disc sheet.The control circuit of this hard disk controller type can be installed in and have on the special-purpose plug-in card of introducing/draw the hard-disk interface line (referring to Fig. 4), also can be installed in and have in the independently hard disk controller of introducing/draw the hard-disk interface line (referring to Fig. 5), at this moment, this control circuit needs external power supply.On the circuit board of above-mentioned hard disk controller, can be provided with the interface circuit that continues with Ethernet, like this, main frame can also use " the transparency protected server of hard disk " of far-end by operation local hard drive method.The transparency protected control circuit of above-mentioned hard disk controller also can integratedly be installed on the motherboard of the control circuit board of hard disk or computing machine.
The present invention has tested enforcement, and it is some to make sample, is applied to software environments such as Dos, Windows, Win95, through implementing test, has realized goal of the invention and Expected Results, and is functional.
Claims (9)
1, a kind of method of transparent protection for computer rigid disk storage contents is characterized in that: its job step is as described below:
(1) at first on hard disk, delimit and to carry out transparency protected software information storage area, and it be defined as protection system or primal system;
(2) open up one in the free area of hard disk and carry out the transparency protected corresponding mapping area of protection system storage area with above-mentioned;
(3) with above-mentioned mapping area, add the free space on the hard disk, constitute the current system that uses for the user, thereby in this hard disk, set up two software information storage areas simultaneously: protection system and current system;
(4) in the storer of computing machine, set up the recording indexes table of protection system software storage area read and write access, and with the whole zero clearings of all record variables in this concordance list;
When certain record variable is 0, represent in the current system that this content that writes down corresponding hard disk information storage unit is not rewritten;
When certain record variable is 1, represent in the current system, this content that writes down corresponding hard disk information storage unit is rewritten, be the mapping area that new information has write this record in the current system, so the content of the corresponding hard disk information storage unit in its content and the protection system is inequality;
(5), or, set up the transparency protected policy control method that hard disk has intelligence by hardware approach by expansion, modification to BIOS:
(A) read-write operation of the each access hard disk of computing machine all will at first remove to read above-mentioned recording indexes table, and determine to read and write storage area in which system according to the variable 0,1 of record;
A, when operating system will be carried out read operation to the information memory cell of hard disk record, should write down pairing variable in the recording indexes table of inspection storage area read and write access earlier, as be 0, then can directly read information in the respective memory regions from protection system; As be 1, then should transfer in the corresponding stored zone in the current system and read information; And the record variable of the recording indexes table correspondence between the storage area read-write is visited is constant;
B, when operating system will be carried out write operation to the information memory cell of hard disk record, then directly this information is write the mapped memory region of this record storage unit in the current system, simultaneously, this corresponding in the recording indexes table of storage area read and write access record variable is rewritten as 1;
(B) as upgrading the protection operation, then at first scanning checks that one by one each writes down pairing variable in the recording indexes table of storage area read and write access, as be 1, then earlier with in this record corresponding stored zone in the information content write protection system of this record place storage area in the current system, then, revise this record variable, making it is 0, and signs in in the above-mentioned recording indexes table; As this record variable is 0, does not then carry out aforesaid operations;
(C) after protection system was set up, the user needed system reset, and when assigning command adapted thereto by operation, then with all variable zero clearings of record of above-mentioned recording indexes table.
2, a kind of device of transparent protection for computer rigid disk storage contents, it is characterized in that: include: the control circuit that central processing unit, ROM (read-only memory), non-volatile read-write memory and address decoding logic circuit are formed is characterized in that: the ROM (read-only memory) in the above-mentioned control circuit is used to store the transparency protected policy control method software of hard disk; Non-volatile read-write memory is then deposited the recording indexes table and the system variable of protection system software storage area read and write access; Central processing unit is on the hard disk controller or the central processing unit of hard disk setting itself.
3, the device of transparent protection for computer rigid disk storage contents as claimed in claim 2 is characterized in that: above-mentioned control circuit can be installed on the printed circuit board (PCB) plug-in card with PC series mini computing machine external bus insert row.
4, the device of transparent protection for computer rigid disk storage contents as claimed in claim 2 is characterized in that: above-mentioned control circuit also can be directly installed on the motherboard of computing machine.
5, the device of transparent protection for computer rigid disk storage contents as claimed in claim 2; it is characterized in that: above-mentioned control circuit can also be directly on the circuit board of the hard disk controller that is provided with MPU microprocessor, extensive gate array logic device and non-volatile read-write memory; at this moment, the transparency protected policy control method software of hard disk is stored in the ROM (read-only memory) that MPU uses, the recording indexes table of protection system software storage area read and write access is stored on non-volatile read-write memory or the disc sheet.
6, as the device of claim 2 or 5 described transparent protection for computer rigid disk storage contents; it is characterized in that: the transparency protected control circuit of above-mentioned hard disk controller can be installed in and have on the independently hard disk controller circuit plate of introducing/draw the hard-disk interface line; at this moment, this control circuit needs external power supply.
7, as the device of claim 2 or 5 described transparent protection for computer rigid disk storage contents, it is characterized in that: the transparency protected control circuit of above-mentioned hard disk controller also can integratedly be installed on the control circuit board of hard disk.
8, as the device of claim 2 or 5 described transparent protection for computer rigid disk storage contents, it is characterized in that: the transparency protected control circuit of above-mentioned hard disk controller also can integratedly be installed on the motherboard of computing machine.
9, the device of transparent protection for computer rigid disk storage contents as claimed in claim 2 is characterized in that: on the circuit board of above-mentioned hard disk controller, can be provided with the interface circuit that is connected with Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN97115085A CN1109300C (en) | 1997-07-31 | 1997-07-31 | Method and appts. of transparent protection for computer rigid disk storage contents |
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| Application Number | Priority Date | Filing Date | Title |
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| CN97115085A CN1109300C (en) | 1997-07-31 | 1997-07-31 | Method and appts. of transparent protection for computer rigid disk storage contents |
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| CN1173669A CN1173669A (en) | 1998-02-18 |
| CN1109300C true CN1109300C (en) | 2003-05-21 |
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| CN97115085A Expired - Fee Related CN1109300C (en) | 1997-07-31 | 1997-07-31 | Method and appts. of transparent protection for computer rigid disk storage contents |
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Cited By (1)
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| CN1306357C (en) * | 2004-12-15 | 2007-03-21 | 中国长城计算机深圳股份有限公司 | A computer system for guaranteeing information security |
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| CN1109979C (en) * | 1999-01-12 | 2003-05-28 | 李增胜 | Method for quick protection and recovery for hard disc data of computer |
| CN1102262C (en) * | 1999-02-10 | 2003-02-26 | 联想(北京)有限公司 | Method for protection of hard disc based on computer main board fixation memory device |
| CN100347689C (en) * | 2001-01-09 | 2007-11-07 | 梁国恩 | Circuit for protecting data on hard disc |
| TW501037B (en) | 2001-05-01 | 2002-09-01 | Benq Corp | Interactive update method for parameter data |
| WO2003050683A1 (en) * | 2001-08-31 | 2003-06-19 | Legend (Beijing) Limited | Method for backing up and recovering data in the hard disk of a computer |
| EP1376608A1 (en) * | 2002-06-28 | 2004-01-02 | Cp8 | Programming method in a nonvolatile memory and system for realisation of such a method |
| CN100346319C (en) * | 2003-03-07 | 2007-10-31 | 张有成 | BIOS layer based linux hard disk data backup and restore method |
| KR101115486B1 (en) * | 2003-08-08 | 2012-02-27 | 엘지전자 주식회사 | Apparatus and method for controlling booting of computer system |
| CN100424652C (en) * | 2006-07-28 | 2008-10-08 | 华南理工大学 | Had disk self-recovery protecting method based on embedded operation system |
| CN101149815B (en) * | 2007-10-23 | 2010-12-01 | 中兴通讯股份有限公司 | Hardware module information tag and method for updating hardware module information tag |
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