CN105512577A - Off-line encrypted and decrypted USB flash drive and implementation method thereof - Google Patents
Off-line encrypted and decrypted USB flash drive and implementation method thereof Download PDFInfo
- Publication number
- CN105512577A CN105512577A CN201610049942.8A CN201610049942A CN105512577A CN 105512577 A CN105512577 A CN 105512577A CN 201610049942 A CN201610049942 A CN 201610049942A CN 105512577 A CN105512577 A CN 105512577A
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- flash disk
- encryption
- decryption
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- file
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 23
- 230000006870 function Effects 0.000 claims description 3
- 241000700605 Viruses Species 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000644 propagated effect Effects 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
Classifications
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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
-
- 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
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/55—Detecting local intrusion or implementing counter-measures
-
- 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
- G06F2221/2143—Clearing memory, e.g. to prevent the data from being stolen
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Storage Device Security (AREA)
Abstract
The invention provides an off-line encrypted and decrypted USB flash drive and an implementation method thereof. The off-line encrypted and decrypted USB flash drive and the implementation method thereof have the advantages that a storage area of the USB flash drive is divided into an encryption area and a decryption area, an encrypted file directory list is established by aiming at encrypted files and stored in the encryption area, and encryption and decryption computation is completed inside the USB flash drive, so that the problem of encrypted data leakage caused by viruses or encryption and decryption software vulnerability is avoided, communication of the USB flash drive and a user terminal cannot access the storage area directly, and the risk of stealing encrypted data due to breaking through the encrypted file directory list and a decrypted file directory list which are stored in the encryption area is completely eradicated; the USB flash drive can store encryption and decryption instructions and executes the encryption and decryption instructions when being connected with an external power source interface, so that energy saving is achieved, and the problem of part of the encrypted data are leaked under the condition of power failure when the USB flash drive performs encryption and decryption computation is also avoided.
Description
Technical field
The present invention relates to a kind of portable memory storage and its implementation, particularly relate to a kind of off line encryption and decryption flash disk and its implementation, when departing from external power source, more strict encryption and decryption demand be met.
Background technology
Encrypted USB flash drive common at present carries out encryption and decryption computing by installing specific city on flash disk fetch equipment, and encryption and decryption data all through process type process or conversion, additionally will increase access time, causes the more common flash disk of this type of flash disk slow.In addition, run directly in the virus of read-write equipment especially in common computer more, easily infect described specific city or utilize the leak of described specific city to obtain enciphered data, virtually reduce the security of this type of flash disk.
Chinese patent application CN103366797A discloses the design method of security U disk of the certification of a kind of wireless authentication authorization terminal and encryption and decryption, disclose a kind of authentication flash disk with wireless connections, by the mandate of flash disk exterior terminal, improve the security of conventional cryptography flash disk to a certain extent, the harm that minimizing virus infections or leak cause.Due to its by " file and catalogue Certificate Authority module " independent of " USB flash disk control module ", as long as the wireless authentication terminal described in it breaches its " file and catalogue Certificate Authority module " and gets final product free access " USB flash disk control module ", and then directly access the data in " storage chip ".So its security is still not ideal enough.
In view of this, the invention provides one safer, also more succinct and energy-conservation safe storage device and its implementation.
Summary of the invention
It is safer that one object of the present invention is to provide one, the implementation method of also more energy-conservation with succinct off line encryption and decryption flash disk.
In order to reach above-mentioned purpose of the present invention, technical scheme of the present invention is as follows:
A kind of method of flash disk off line encryption and decryption, in the flash disk with wireless communication function, set up encrypt file catalogue listing, it is characterized in that, the memory block of this flash disk is at least divided into encrypted area and deciphering district, this encrypt file catalogue listing is stored in encrypted area, by the encryption and decryption computing of flash disk interior liabilities data; The step of described off line encryption and decryption comprises:
A. flash disk is connected by wireless telecommunications and user terminal;
B. user terminal is by after authentication, and encrypt file catalogue listing is transferred to user terminal by flash disk;
C. user terminal sends encryption and decryption instruction to flash disk, performs encryption and decryption computing by flash disk inside, and the file of deciphering is stored in deciphering district, and the file of encryption is stored in encrypted area;
D. flash disk upgrades encrypt file catalogue listing; Complete off line encryption and decryption.
In certain embodiments, in step c, described flash disk stores this instruction, is connected to after external power source interface until described flash disk, then perform this instruction after receiving encryption and decryption instruction.
In certain embodiments, in step c, described encryption and decryption instruction comprises the execution time, when described flash disk timing is to the described execution time, performs instruction.
In certain embodiments, described flash disk timing destroys specified file to during the described execution time, or is encrypted by specified file.。
In certain embodiments, in stepb, by authentication, user terminal refers to that the id of user terminal is by flash disk certification, user passes through user end certification.
It is safer that another object of the present invention is to provide one, also more energy-conservation with succinct off line encryption and decryption flash disk.
In order to reach above-mentioned purpose of the present invention, technical scheme of the present invention is as follows:
A kind of off line encryption and decryption flash disk, is characterized in that, described flash disk has wireless communication module and memory module and arithmetic element; Described wireless communication module is used for setting up wireless connections; Described memory module is at least divided into encrypted area and deciphering district; Described flash disk is to the file set up encrypt file catalogue listing in encrypted area; Described encrypt file catalogue listing is stored in encrypted area; Described flash disk receives encryption and decryption instruction by wireless connections; Perform encryption and decryption computing by described arithmetic element, the file after encryption is stored in encrypted area, and the file after deciphering is stored in deciphering district.
In certain embodiments, this instruction, after the instruction of reception encryption and decryption, is kept in, is connected to after external power source interface, then performs instruction until described flash disk by described flash disk.
In certain embodiments, described flash disk at the appointed time performs encryption and decryption operational order
In certain embodiments, described flash disk timing destroys specified file to during the described execution time, or is encrypted by specified file.
In certain embodiments, the encryption and decryption instruction that described flash disk receives comes from the wireless connections through authentication; Described wireless telecommunications are bluetooth communication or wifi communication.
Storage area is all at least divided into deciphering district and encrypted area by method of the present invention and flash disk, encrypt file catalogue is stored in encrypted area and by the computing of flash disk interior liabilities encryption and decryption, because encryption and decryption computing is carried out in flash disk inside, exterior terminal directly cannot access the data in encrypted area, encrypt file catalogue is also stored in encrypted area simultaneously, the deciphering of this catalogue itself also needs to rely on flash disk internal arithmetic deciphering, exterior terminal directly cannot access encrypted area or encrypt file catalogue, exterior terminal can only send encryption and decryption instruction by wireless connections, thus stopped the drawback that exterior terminal breaks through flash disk internal arithmetic unit acquisition data.And flash disk internal arithmetic unit independent operating, does not rely on external arithmetic, the possibility that preventing virus is got involved.In addition, encryption and decryption instruction can store by flash disk, to perform instruction again when flash disk is connected to external power source interface, the energy ezpenditure of flash disk internal electric source in encryption and decryption computing can be reduced, not only energy-conservation, even if when the long-term power down of flash disk, also can perform when again giving electricity and previously be stored in inner encryption and decryption instruction, so, even if under flash disk internal electric source extremely power shortage state, also can carry out encryption and decryption operation, keep the safety of exchanges data.In addition, flash disk timing can perform destruction file to during the execution time, or to instructions such as specified file encryptions; Meeting when user pays vital document by flash disk prevents this file from wantonly being propagated and spreading.
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, elaborate to the specific embodiment of the present invention below with reference to accompanying drawing.Set forth so that fully understand detail of the present invention in the following description, but the present invention can implement to be different from mode described below, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention.Therefore, the present invention is not by the restriction of the specific embodiment of following discloses.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the embodiment of the present invention one;
Fig. 2 is the structured flowchart of the embodiment of the present invention two.
Embodiment
Embodiment one
As shown in Figure 1, the method of the present embodiment flash disk off line encryption and decryption, the flash disk that the present embodiment method uses has wireless communication capability, wireless communication can be set up with exterior terminal to be connected, it can be that bluetooth connects or wif connects that this type of wireless communication connects, and furthermore, these wireless telecommunications connect can adopt frame-skipping and encryption technology, realize low-power, short-range wireless telecommunications connect, can inflight acquisition be prevented.
The present embodiment method is set up encrypt file catalogue listing for the encrypt file in encrypted area and is stored in encrypted area.After being connected by wireless telecommunications and user terminal, flash disk carries out authentication to this user terminal, judges whether this user terminal is the validated user terminal recorded in flash disk; Wherein, in authentication step, user terminal can also carry out authentication to user, judges whether this user is validated user.After authentication, flash disk transfers the encrypt file catalogue listing being stored in encrypted area, deciphers this File Directory Table and is transferred to user terminal; Now, user terminal presents this encrypt file catalogue listing, user can revise the encryption and decryption state of corresponding document according to demand; This amendment action is transferred to flash disk with the form of encryption and decryption instruction, and flash disk performs this encryption and decryption instruction, and by the file of encryption stored in encrypted area, the file of deciphering is stored in deciphering district; In the present embodiment, flash disk can store this encryption and decryption instruction, and when flash disk is connected to external power source interface, perform this encryption and decryption instruction again, this situation can be selected to process by flash disk when extremely lacking when flash disk internal electric source or closing on shortage, namely, when flash disk internal electric source is not enough to provide the electric power intactly performing encryption and decryption execution needs, flash disk selects this instruction or instruction sequence to keep in, and performs after external power source to be accessed again; This situation also can be the default treatment mode of flash disk to instruction, to ensure that flash disk is in the most energy-conservation state.After flash disk executes encryption and decryption instruction, upgrade encryption and decryption file directory, wait for the new request of user terminal.In addition, flash disk timing can perform destruction file to during the execution time, or adds the instructions such as specified file encryption; Meeting when user pays vital document by flash disk prevents this file from wantonly being propagated and spreading.
Embodiment two
As shown in Figure 2, the present embodiment off line encryption and decryption flash disk, has wireless communication module and memory module and arithmetic element; Arithmetic element connects wireless Tongxu module and memory module; In the present embodiment, arithmetic element also connects timing unit, and in other embodiments, timing unit also can be built in arithmetic element; Arithmetic element, wireless communication module, memory module etc. need the module of power work to be all connected to power module (meaning not shown in the figures).
Described wireless communication module is used for setting up wireless connections with user terminal, this wireless communication module can be bluetooth module or wifi module or integrated with Bluetooth and wifi function communication module or other home control network communication protocol modules, this communication can adopt frame-skipping and encryption technology, realize low-power, short-range wireless telecommunications connect, prevent inflight acquisition.Described arithmetic element is responsible for encryption and decryption computing and authentication and relevant control.Be divided into encrypted area and deciphering district in described memory module, storage encrypt file catalogue listing described encrypted area in, described deciphering district is connected with USB interface and accesses for read-write equipment.
Wireless communication module is transferred to arithmetic element after receiving the encryption and decryption instruction that user terminal sends, and arithmetic element performs this encryption and decryption instruction, and the file after encryption stored in encrypted area, the file after deciphering is stored in deciphering district.In the present embodiment, flash disk can store this encryption and decryption instruction, and when flash disk is connected to external power source interface, perform this encryption and decryption instruction again, this situation can be selected to process by flash disk when extremely lacking when flash disk internal electric source or closing on shortage, namely, when flash disk internal electric source is not enough to provide the electric power intactly performing encryption and decryption execution needs, flash disk selects this instruction or instruction sequence to keep in, and performs after external power source to be accessed again; This situation also can be the default treatment mode of flash disk to instruction, to ensure that flash disk is in the most energy-conservation state.In addition, flash disk timing can perform destruction file to during the execution time, or adds the instructions such as specified file encryption; Meeting when user pays vital document by flash disk prevents this file from wantonly being propagated and spreading.
The present embodiment flash disk, after wireless communication module and user terminal connect, first carries out authentication to wireless terminal, judges whether this user terminal is the validated user terminal recorded in flash disk; Wherein, in authentication process, user terminal can also carry out authentication to user, judges whether this user is validated user.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any those skilled in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make multiple possible variation and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to essence of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all belongs to the protection domain of technical solution of the present invention.
Claims (10)
1. the method for a flash disk off line encryption and decryption, encrypt file catalogue listing is set up in the flash disk with wireless communication function, it is characterized in that, the memory block of this flash disk is at least divided into encrypted area and deciphering district, this encrypt file catalogue listing is stored in encrypted area, by the encryption and decryption computing of flash disk interior liabilities data; The step of described off line encryption and decryption comprises:
A. flash disk is connected by wireless telecommunications and user terminal;
B. user terminal is by after authentication, and encrypt file catalogue listing is transferred to user terminal by flash disk;
C. user terminal sends encryption and decryption instruction to flash disk, performs encryption and decryption computing by flash disk inside, and the file of deciphering is stored in deciphering district, and the file of encryption is stored in encrypted area;
D. flash disk upgrades encrypt file catalogue listing; Complete off line encryption and decryption.
2. the method for a kind of flash disk off line encryption and decryption according to claim 1, is characterized in that, in step c, described flash disk stores this instruction, is connected to after external power source interface until described flash disk, then perform this instruction after receiving encryption and decryption instruction.
3. the method for a kind of flash disk off line encryption and decryption according to claim 1 and 2, is characterized in that, in step c, described encryption and decryption instruction comprises the execution time, when described flash disk timing is to the described execution time, performs instruction.
4. the method for a kind of flash disk off line encryption and decryption according to claim 3, is characterized in that, described flash disk timing destroys specified file to during the described execution time, or is encrypted by specified file.
5. the method for a kind of flash disk off line encryption and decryption according to claim 1 and 2, is characterized in that, in stepb, by authentication, user terminal refers to that the id of user terminal is by flash disk certification, user passes through user end certification.
6. an off line encryption and decryption flash disk, is characterized in that, described flash disk has wireless communication module and memory module and arithmetic element; Described wireless communication module is used for setting up wireless connections; Described memory module is at least divided into encrypted area and deciphering district; Described flash disk is to the file set up encrypt file catalogue listing in encrypted area; Described encrypt file catalogue listing is stored in encrypted area; Described flash disk receives encryption and decryption instruction by wireless connections; Perform encryption and decryption computing by described arithmetic element, the file after encryption is stored in encrypted area, and the file after deciphering is stored in deciphering district.
7. a kind of encryption and decryption flash disk according to claim 6, is characterized in that, this instruction, after the instruction of reception encryption and decryption, is kept in, is connected to after external power source interface, then performs instruction until described flash disk by described flash disk.
8. a kind of off line encryption and decryption flash disk according to claim 6 or 7, it is characterized in that, described flash disk at the appointed time performs encryption and decryption operational order.
9. a kind of off line encryption and decryption flash disk according to claim 8, is characterized in that, described flash disk timing destroys specified file to during the described execution time, or is encrypted by specified file.
10. a kind of off line encryption and decryption flash disk according to claim 6 or 7, is characterized in that, the encryption and decryption instruction that described flash disk receives comes from the wireless connections through authentication; Described wireless telecommunications are bluetooth communication or wifi communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610049942.8A CN105512577A (en) | 2016-01-26 | 2016-01-26 | Off-line encrypted and decrypted USB flash drive and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610049942.8A CN105512577A (en) | 2016-01-26 | 2016-01-26 | Off-line encrypted and decrypted USB flash drive and implementation method thereof |
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| Publication Number | Publication Date |
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| CN105512577A true CN105512577A (en) | 2016-04-20 |
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| CN201610049942.8A Pending CN105512577A (en) | 2016-01-26 | 2016-01-26 | Off-line encrypted and decrypted USB flash drive and implementation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109063517A (en) * | 2018-06-27 | 2018-12-21 | 湖北师范大学 | A kind of electronic information equipment and its operating method |
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| CN103366797A (en) * | 2013-07-19 | 2013-10-23 | 丁贤根 | Design method of security U disk by employing wireless authentication terminal for authorizing authentication, encryption and decryption |
| CN103530581A (en) * | 2013-10-09 | 2014-01-22 | 中国联合网络通信集团有限公司 | Hard disk encrypting method and operation system |
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2016
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101281498A (en) * | 2007-04-02 | 2008-10-08 | 北京华旗资讯数码科技有限公司 | Ciphering type mobile storage apparatus |
| TW201003451A (en) * | 2008-07-10 | 2010-01-16 | Skymedi Corp | Safety storage device with two-stage symmetrical encryption algorithm |
| CN101788959A (en) * | 2010-02-03 | 2010-07-28 | 武汉固捷联讯科技有限公司 | Solid state hard disk secure encryption system |
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| CN201698408U (en) * | 2010-06-23 | 2011-01-05 | 沈刚 | Storing mechanism capable of hiding or displaying part of storage space through RF induction manner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109063517A (en) * | 2018-06-27 | 2018-12-21 | 湖北师范大学 | A kind of electronic information equipment and its operating method |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 362200 Jinjiang, Fujian, Qingyang street International Trade Building or Cetra Building, No. 707, No. Applicant after: FUJIAN ZHUOZHAN INFORMATION TECHNOLOGY CO.,LTD. Address before: 362200 Jinjiang, Fujian, Qingyang street International Trade Building or Cetra Building, No. 707, No. Applicant before: FUJIAN GIOT INFORMATION TECHNOLOGY CO.,LTD. |
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| COR | Change of bibliographic data | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160420 |