CN1421786A - Movable external memory content enciphering method independent of computer - Google Patents
Movable external memory content enciphering method independent of computer Download PDFInfo
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- CN1421786A CN1421786A CN 01134582 CN01134582A CN1421786A CN 1421786 A CN1421786 A CN 1421786A CN 01134582 CN01134582 CN 01134582 CN 01134582 A CN01134582 A CN 01134582A CN 1421786 A CN1421786 A CN 1421786A
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- external memory
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Abstract
The method of enciphering the content of movable external memory includes the following steps: running one cipher setting program set in the computer operation system for setting the access cipher to the movable external memory to set cipher and store the cipher in the movable external memory by the user; and running the enciphering program set in the movable external memory through inputting cipher while the movable external memory is run by the computer user or operation system for the first time after being inserted. When the input cipher is the same as that in the movable external memory, the computer user or operation system is allowed to access the movable external memory. The present invention makes the enciphering to the movable external memory independent on computer and universal while ensuring the data safety and reliability.
Description
Affiliated technical field
The present invention relates to a kind of content in the movable external memory be carried out method of encrypting, be used to forbid unauthorized visit movable external memory.
Background technology
Movable external memory is as storage medium and have mobile storage means with the interface of computing machine with semiconductor memory, for example, at present a kind of movable external memory commonly used is also referred to as " flash disk ", and its adopts popular flash memory (FLASH MEMORY) as storage medium and adopt USB (USB (universal serial bus)) interface.This movable external memory volume is small and exquisite, memory space is big and be easy to carry about with one, and can support plug and play.But movable external memory also might be lost or be read and write by other people; and may have the many individual's or need to be keep secret data in the movable external memory or not wish the content being opened and use by other people; therefore need carry out encipherment protection to the content on the movable external memory, and can only be to there being the people who uses right to use.There is certain methods that the content of movable external memory is encrypted at present, but all be that a special program is installed on computers, all will move this program behind each startup computing machine, when the user need visit content in the movable external memory, this program monitoring will require to input password during to this accessing operation, thereby realizes the encryption to movable external memory content.From above realization principle as can be seen, the encryption of movable external memory content is to depend on the computing machine that this program is installed, and this movable external memory can not use or realize to encrypt on other machine.Versatility to this movable external memory equipment has been subjected to great limitation, also makes content wherein can not get reliable protection.
Summary of the invention
The purpose of this invention is to provide a kind of movable external memory content enciphering guard method that is independent of computing machine; this method only depends on movable external memory; after the movable external memory that will encrypt according to the present invention inserts the corresponding interface of arbitrary computing machine; to start encryption method of the present invention, realize protection movable external memory content.Therefore, the invention enables encryption to have versatility widely, and guarantee the safe reliability of the data on the movable external memory, do not influence the ease for use of movable external memory simultaneously movable external memory.
Technical scheme of the present invention is as follows:
A kind of content to movable external memory according to the present invention is carried out method of encrypting, may further comprise the steps:
(1) password setting step: a set password setting program that is used for this movable external memory is provided with access code in the operation operation system of computer is provided with the password that allows this movable external memory of visit by the user, and leaves this password in this movable external memory;
(2) password audit step: when after computer user or operating system are being pegged graft this movable external memory, visiting this movable external memory first, move set in this a movable external memory encipheror, input password by this user, when this password is consistent with the password in being arranged on this movable external memory, allow this movable external memory of this user or operating system access.
In the present invention, described movable external memory can be as storage medium and have USB (universal serial bus) (USB) interface with flash memory (flash memory).The present invention also is applicable to and adopts similar other storage mediums and have the movable external memory that other connect the interface of computing machines.
In the present invention, described password setting step also can comprise a clearing password step, promptly allows the user to be provided with at this and removes the password that leaves in this movable external memory on computing machine of password.For example when the user forgets the password of this movable external memory, can on this computing machine, empty by the password to this movable external memory, so that can visit this movable external memory.
In one embodiment of the invention, in described password audit step, after movable external memory is received request of access first after connecting computing machine, activate this encipheror automatically, be loaded into it in calculator memory and bring into operation.
In one embodiment of the invention, the firmware by movable external memory activates this encipheror and this program is loaded into calculator memory.Firmware described here is meant the programmed instruction that leaves in the ROM (read-only memory).For example, the activation of encipheror and loading are to realize under the control of the Basic Input or Output System (BIOS) (BIOS) at movable external memory.
In the present invention, leave password in this movable external memory in and can be hidden in wherein the storage space, know this password to forbid other people.The method of hiding password has multiple, a little less than the function of the hiding password of these methods also has by force, can select for use according to user's needs.
In the present invention, be arranged on this encipheror in this movable external memory can be stored in this movable external memory one be hidden and unsuppressible space in.Hiding and the unsuppressible method of realization encipheror has multiple, can select for use according to user's needs.
In one embodiment of the invention, the step of operation encipheror is to realize by the readable AUTORUN.INF file that can not write is set under the root directory of movable external memory, after this movable external memory connected computing machine, operation system of computer was called this encipheror automatically according to this document.This AUTORUN.INF file be when movable external memory is plugged on the USB interface of computer by a file of computer automatic execution, its effect and form are present technique field metric systems.Should be understood that those skilled in the art can know the concrete of this document by inference according to the effect of this AUTORUN.INF file
Embodiment.
In the present invention, the step of this encipheror of described operation also can be by the encipheror in the movable external memory being installed in the computing machine and moving and realize.
In one embodiment of the invention, when movable external memory inserted computing machine, the encipheror in the movable external memory was installed in the computing machine; After this encipheror is installed in the computing machine, when starting at every turn, this computing machine all moves this encipheror automatically.
The present invention's method can be independent of computing machine and only depend on the encryption of movable external memory realization to movable external memory content, thereby increases its security and ease for use greatly; After the movable external memory that will encrypt according to the present invention inserts arbitrary USB interface of computer; to start encryption method of the present invention; allly do not know that the computer user of the access code of this movable external memory can't visit this movable external memory, thereby realize protection movable external memory content.Therefore, the invention enables encipherment protection to have versatility widely, guarantee the safe reliability of the data on the movable external memory movable external memory.The present invention's method is simple and practical, the reliability height.
Embodiment below in conjunction with accompanying drawing further specifies the present invention.
Fig. 1 is the process flow diagram of the password setting step among the embodiment of explanation according to the present invention;
Fig. 2 is the process flow diagram of the password audit step among the embodiment of explanation according to the present invention;
Fig. 3 is the process flow diagram of the password audit step among explanation another embodiment according to the present invention;
Fig. 4 is the process flow diagram of the password audit step among the another embodiment of explanation according to the present invention.
For realizing the present invention's purpose, encipheror must be placed in the movable external memory, and can be activated automatically, then terminate-and-stay-resident.Three embodiment of the present invention are below described.
(embodiment 1)
Fig. 1 and Fig. 2 are the process flow diagrams that this embodiment is described.
1. at first need one movable external memory is provided with the program of password, this program is a stand-alone program, is installed in the operating system, and this program provides password setting and password erase feature.When the user is provided with password at needs to movable external memory, call this program, this program will be stored in the password that is provided with the specific position of movable external memory, and hide.The method of hiding password has multiple, the function that these methods are hidden password also have have by force a little less than, can select for use according to user's needs.When the user forgets the password of this movable external memory, can on this TV station machine, delete by the password to this movable external memory.(this computing machine that password program is set is installed just can be had the authority of movable external memory being carried out password setting, modification, deletion)
2. secondly mark a little block space of movable external memory and deposit encipheror.Can the content in this space will be hidden and unsuppressible-suppression by memory bank being carried out method such as specific addressing.Hiding and the unsuppressible method of realization encipheror has multiple, can select for use according to user's needs.
3. after movable external memory was inserted operating system, operating system at first can load the driving of corresponding mobile external memory automatically according to the DeviceID and the Vendor ID of movable external memory.After the driving loading is finished, when some programs of user and operating system need be read and write the content of movable external memory, operating system will be sent read-write requests to movable external memory.The Firmware of movable external memory will judge after receiving read-write requests whether encipheror activates and load.If do not activate, will at first activate encipheror, and it will be loaded in the internal memory, encipheror brings into operation.
4. encipheror will judge whether that this user has been provided with password, and whether input password after this start, not input password if the user has been provided with password after this start, just require the user to input password.When the password of user's input is identical with the password that has been provided with, the content of user capture movable external memory will be allowed.
5. in start process, because encipheror can reside in the internal memory always, so only need input password one time.
As shown in Figure 1, when the user calls the present invention's password setting program under operating system, preferably movable external memory is connected on computers.At first can select is password to be set or to remove password.When selecting to remove password, if this movable external memory once was provided with password in the past, then the user must be able to import original set Old Password, could remove this Old Password, otherwise just directly removes password; When the user selects password is set, need respectively to judge whether movable external memory has pegged graft on computers (if do not plug then point out and plug), whether be provided with password (if password was set in the past then point out the input Old Password) in the past, point out the user to input set password then, and the ad-hoc location that password leaves on the movable external memory is also hidden.
Fig. 2 has illustrated the process of movable external memory content being carried out encipherment protection.After inserting movable external memory, operating system loads corresponding mobile external memory driver according to device identification; When some programs of user or operating system require the visit movable external memory content, send request of access by operating system to movable external memory, after movable external memory is accepted the interview, firmware by movable external memory activates the encipheror that leaves movable external memory in, and judge whether this encipheror has been loaded into calculator memory, if do not load then encipheror is loaded into internal memory and brings into operation; Judge whether to this movable external memory is provided with password by encipheror again,, then notify movable external memory to handle request of access and allow the free access movable external memory content if password is not set; If for this movable external memory is provided with access code, judge behind this computer booting, whether to have inputed password by encipheror again, if inputed correct password, then allow visit; If do not input password, then point out the user to input password, and judge whether the input password is correct, if incorrect then disable access movable external memory (or giving password reader meeting several times again), if the password of input is correct, with set, when leaving on the movable external memory password casing in, then notify movable external memory to handle request of access and allow the free access movable external memory content.
(embodiment 2)
Embodiment 2 is that with the maximum different of embodiment 1 mode that is activated of encipheror is different, as shown in Figure 3.Embodiment 2 has mainly utilized the automatically principle of operation of similar CD, and simultaneously, encipheror is mounted in the computing machine, rather than to resemble the embodiment 1 only be to be loaded in the calculator memory, so this scheme will be left a trace in computing machine.
1 at first has one movable external memory is provided with the program of password, and this program can be described identical with embodiment 1, as shown in Figure 1.
2 secondly, (this document moves this movable external memory content automatically when being mainly used to be implemented in firm insertion movable external memory to place an AUTORUN.INF file under the root directory of mobile internal memory, just as in CD-ROM drive, putting into to start CD automatically the time, this CD can start the same automatically), this document is read-only, but do not hide, and this document all is readable all the time, can be not encrypted.
3 encipherors that will need simultaneously to install on computers are placed in one section special space of movable external memory, and this special space is that be hidden, unsuppressible to the user, as identical as described in the embodiment 1.
4 when inserting movable external memory, operating system will detect automatic running program, and beginning removes to judge whether to have installed encipheror according to the requirement of AUTORUN.INF, if encipheror has been installed, encipheror will be installed, if encipheror is not installed, encipheror will be installed automatically.
5 after installing encipheror, when starting this computing machine, all can move automatically behind the encipheror at every turn.The monitoring flow process of encipheror is with identical described in the embodiment 1.
(embodiment 3)
Embodiment 3 is that with the maximum different of embodiment 1 mode that is activated of encipheror is different, as shown in Figure 4.This embodiment has utilized when inserting movable memory equipment, and Windows XP operating system can go to seek automatically those file types in the memory device, and can eject the prompting frame of operation this document type on the table.Simultaneously encipheror is mounted in the computing machine, rather than to resemble the embodiment 1 only be to be loaded in the calculator memory, so this scheme will be left a trace in computing machine.1 at first has one movable external memory is provided with the program of password, and this program can be described identical with embodiment 1, as shown in Figure 1.
Secondly 2 open up one section space in movable external memory, placing with this section space needs installation encipheror on computers.This section program is read-only, but does not hide, and this program all is readable all the time, can be not encrypted.
3 in Windows XP operating system, and when inserting movable external memory, operating system can be pointed out the user installation encipheror.When clicking the installation encipheror, installation procedure can go to judge whether to install encipheror, if encipheror has been installed, encipheror will be installed, if encipheror is not installed, will begin to install encipheror.
4 after installing encipheror, when starting this computing machine, all can move automatically behind the encipheror at every turn.The monitoring flow process of encipheror is with identical described in the embodiment 1.
5 because encipheror can not encrypted all the time, and the user also can directly move the installation file of encipheror, and encipheror is installed in this computing machine.
Claims (10)
1, a kind of content to movable external memory is carried out method of encrypting, and as storage medium and have interface with computing machine, this method may further comprise the steps this movable external memory with semiconductor memory:
(1) password setting step: a set password setting program that is used for this movable external memory is provided with access code in the operation operation system of computer is provided with the password that allows this movable external memory of visit by the user, and leaves this password in this movable external memory;
(2) password audit step: when after computer user or operating system are being pegged graft this movable external memory, visiting this movable external memory first, move set in this a movable external memory encipheror, input password by this user, when this password is consistent with the password in being arranged on this movable external memory, allow this movable external memory of this user or operating system access.
2, method according to claim 1, wherein, described movable external memory is as storage medium and have USB (universal serial bus) with flash memory.
3, method according to claim 1, wherein, described password setting step comprises a clearing password step, promptly allows the user to be provided with at this and removes the password that leaves in this movable external memory on computing machine of password.
4, method according to claim 1 wherein, in described password audit step, after this movable external memory is received request of access first after connecting computing machine, activates this encipheror automatically, is loaded into it in calculator memory and brings into operation.
5, method according to claim 4 wherein, is activated this encipheror and this program is loaded into calculator memory by the firmware of movable external memory.
6, method according to claim 1 wherein, leaves password in this movable external memory in and is hidden in wherein the storage space.
7, method according to claim 1, wherein, be arranged on this encipheror in this movable external memory and be stored in this movable external memory one be hidden and unsuppressible space in.
8, according to claim 1 or 4 described methods, wherein, the step of this encipheror of described operation is to realize by the readable AUTORUN.INF file that can not write is set under the root directory of this movable external memory, after this movable external memory connected computing machine, operation system of computer was called this encipheror automatically according to this document.
9, method according to claim 1, wherein, the step of this encipheror of described operation is by the encipheror in the movable external memory being installed in the computing machine and moving and realize.
10, method according to claim 9, wherein,
When movable external memory inserted computing machine, the encipheror in the movable external memory was installed in the computing machine;
After this encipheror is installed in the computing machine, when starting at every turn, this computing machine all moves this encipheror automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011345829A CN1331061C (en) | 2001-11-28 | 2001-11-28 | Movable external memory content enciphering method independent of computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011345829A CN1331061C (en) | 2001-11-28 | 2001-11-28 | Movable external memory content enciphering method independent of computer |
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| Publication Number | Publication Date |
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| CN1421786A true CN1421786A (en) | 2003-06-04 |
| CN1331061C CN1331061C (en) | 2007-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011345829A Expired - Fee Related CN1331061C (en) | 2001-11-28 | 2001-11-28 | Movable external memory content enciphering method independent of computer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377025C (en) * | 2004-03-24 | 2008-03-26 | 佳能株式会社 | Information processing apparatus, control method thereof, control program, and storage medium |
| CN100461915C (en) * | 2005-11-28 | 2009-02-11 | 中兴通讯股份有限公司 | Method for conducting secrete handling for PC broadside-on mobile terminal information |
| CN100462993C (en) * | 2007-07-25 | 2009-02-18 | 郭发源 | Outer placed mobile storage in use for alete information processing |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ID27991A (en) * | 1999-03-03 | 2001-05-03 | Sony Corp | DATA PROCESSING APARATUS, DATA PROCESSING METHOD, TERMINAL UNITS, AND TRANSMISSION METHODS OF DATA PROCESSING APARATUS |
| JP2000259503A (en) * | 1999-03-10 | 2000-09-22 | Yokogawa Digital Computer Kk | Flash microcomputer |
| CN1265494A (en) * | 2000-04-24 | 2000-09-06 | 后健慈 | Enciphered and deciphered memory and its access controlling method |
| CN1147793C (en) * | 2001-05-30 | 2004-04-28 | 深圳市朗科科技有限公司 | Semiconductor memory device |
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2001
- 2001-11-28 CN CNB011345829A patent/CN1331061C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377025C (en) * | 2004-03-24 | 2008-03-26 | 佳能株式会社 | Information processing apparatus, control method thereof, control program, and storage medium |
| US7814562B2 (en) | 2004-03-24 | 2010-10-12 | Canon Kabushiki Kaisha | Information processing apparatus, control method thereof, control program, and storage medium |
| CN100461915C (en) * | 2005-11-28 | 2009-02-11 | 中兴通讯股份有限公司 | Method for conducting secrete handling for PC broadside-on mobile terminal information |
| CN100462993C (en) * | 2007-07-25 | 2009-02-18 | 郭发源 | Outer placed mobile storage in use for alete information processing |
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| CN1331061C (en) | 2007-08-08 |
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Granted publication date: 20070808 Termination date: 20201128 |