CN103617134A - Portable data safety storage device and safety storage implementation method by same - Google Patents
Portable data safety storage device and safety storage implementation method by same Download PDFInfo
- Publication number
- CN103617134A CN103617134A CN201310544907.XA CN201310544907A CN103617134A CN 103617134 A CN103617134 A CN 103617134A CN 201310544907 A CN201310544907 A CN 201310544907A CN 103617134 A CN103617134 A CN 103617134A
- Authority
- CN
- China
- Prior art keywords
- data
- chip
- storage
- control chip
- memory bank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Storage Device Security (AREA)
Abstract
The invention discloses a portable data safety storage device which comprises a main storage body and an auxiliary storage body. The main storage body comprises a control chip and a storage chip. The auxiliary storage body comprises a storage chip and does not comprise a control chip. The control chip comprises a cryptographic algorithm device and a microprocessor. The cryptographic algorithm device is used for grouping cryptographic algorithm for data encryption and decryption. The microprocessor exchanges data and transfers instructions with a computer, coordinates co-working of components in the control chip, divides data encrypted by the cryptographic algorithm device into two groups of data according to a certain granularity and stores the data to the storage chips of the main storage body and the auxiliary storage body. The invention further provides a safety storage implementation method by the portable data safety storage device. By the safety storage implementation method, safety during data carrying of the portable data safety storage device is guaranteed.
Description
Technical field
The invention belongs to the technical field of computing machine, particularly a kind of portable data safe storage device, and the method that realizes safe storage.
Background technology
The portable data storage device that the USB flash disk of take is main flow, has the features such as capacity is large, portable, is therefore used widely.If but USB flash disk is not taken safety measures, once lose, data wherein can directly be read, and cause and divulge a secret, so common U disk should not be used in security fields, especially in concerning security matters unit and department, use.
The simple portable data storage device that uses cryptographic algorithm, its security intensity only depends on the cryptographic algorithm of use, attack pattern for various cryptographic algorithm emerges in an endless stream at present, make this type of portable data storage device in portably using, also have potential safety hazard, cannot guarantee the safety of data.
Summary of the invention
The technical matters that the present invention solves is: overcome the deficiencies in the prior art, the memory storage that can guarantee data security in a kind of portably using is provided.
The present invention proposes a kind of portable data safe storage device, comprises primary storage body and from memory bank, above-mentioned primary storage body comprises control chip and storage chip, above-mentionedly from memory bank, comprises storage chip and does not have control chip; Above-mentioned primary storage body has one for connecting the public mouth of USB interface of computing machine, and above-mentioned primary storage body is connected by pair of connectors from memory bank with above-mentioned; The storage chip of above-mentioned primary storage body is identical with the storage chip type from memory bank; Above-mentioned control chip comprises: cryptographic algorithm device, for realizing the block encryption algorithm to data enciphering/deciphering; And microprocessor, with computer interactive data and transfer instruction, and coordinate the co-operation of each device in above-mentioned control chip, and the data after cryptographic algorithm device is encrypted are split as two groups of data A and B by certain particle size, and by A organize in the storage chip that data store primary storage body into, B group data store into from the storage chip of memory bank.
Preferably, above-mentioned primary storage body is the Nand Flash that page size is identical with the storage chip from memory bank, and capacity is identical or different; The number of pins of above-mentioned connector is not less than 17.
As optimization, above-mentioned control chip also comprises cipher key destruction device, for destroying the data encrypting and deciphering key being stored in wherein, above-mentioned primary storage body is also included as the battery of above-mentioned control chip power supply, and connects battery module and control chip and activate the push-button switch of above-mentioned cipher key destruction device.
Preferably, above-mentioned connector is HDMI type C (mini HDMI).
As optimization, above-mentioned primary storage body is identical with the storage chip capacity from memory bank; Above-mentioned primary storage body and the above-mentioned pair of connectors from memory bank are for realizing to powering and carry out data transmission from memory bank; Above-mentioned battery is that model is the button battery of CR1220; Above-mentioned cryptographic algorithm device uses AES-256 block encryption algorithm; Above-mentioned by being byte to the fractionation granularity of data in certain particle size fractionation, the least-significant byte of each word WORD is split as A group, and most-significant byte is split as B group; Above-mentioned control chip also comprises randomizer, for generation of true random number, as data encrypting and deciphering key.
A kind of method of using portable data safe storage device to realize data security storage is also proposed, based on above arbitrary described portable data safe storage device, above-mentioned primary storage body and all can not separate connection computing machine using from memory bank, can only be used in combination, and separately carries; Said method comprises the steps:
Initialization primary storage body and from the storage chip of memory bank;
Obtain data encrypting and deciphering key, initialized cryptographic algorithm device;
The order that circulation receiving computer sends is also made respective handling.
Preferably, above-mentioned initialization primary storage body and as follows from the step of the storage chip of memory bank:
The hardware information of initialization storage chip;
Set up the mapping table of logic sector and physical block, make the data of any one logic sector can be saved in primary storage body and simultaneously from the storage chip of memory bank;
The information of enumerating of initialization memory bank, enumerates for operating system.
As optimization, also comprise that the step of identity discriminating is as follows:
Input password character, sends to control chip;
Control chip carries out hash computing by the password of receiving;
Judge that whether operation result is identical with the authenticate password Hash Value being preset in control chip, if the same can carry out data read-write operation to storage chip, otherwise refuse this operation.
Further optimize, also comprise that the step of emergency condition destruction key is as follows:
Between primary storage body and computing machine, remain open;
Press the button formula switch, connect main control chip circuit;
Keep long by above-mentioned push-button switch, activate main control chip and promptly destroy logic;
Main control chip is deleted the data encrypting and deciphering key of its storage.
Preferably, the step of logic sector and physical block mapping is as follows:
Select 2 times to the logic sector of physical block size;
Above-mentioned logic sector is split as to two groups by certain particle size;
Every group of data are merged, and the data recombination that makes aforementioned two groups is two data blocks;
Two data blocks are mapped as respectively to primary storage body and from a physical block of memory bank.
Because data ciphertext is stored separately two independently in memory bank, two memory banks must be used in combination and can decrypt data expressly, this has effectively prevented from obtaining expressly by attacking ciphertext, greatly reduces secret leaking risk, has met the demand for security of confidential data in portably using.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention primary storage body and from the structural representation of memory bank;
Fig. 2 is the structural representation of apparatus of the present invention preferred embodiment primary storage body;
Fig. 3 is that apparatus of the present invention preferred embodiment is from the structural representation of memory bank;
Fig. 4 is the pinout figure of apparatus of the present invention preferred embodiment HDMI connector;
Fig. 5 is the pinout figure of apparatus of the present invention preferred embodiment SSX0905-B main control chip;
Fig. 6 is the simplified diagram of the inventive method;
Fig. 7 is the process flow diagram of the inventive method preferred embodiment logic sector and physical block mapping;
Fig. 8 is the process flow diagram that the inventive method preferred embodiment identity is differentiated;
Fig. 9 is the process flow diagram that the inventive method preferred embodiment is destroyed key.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is further described.
As shown in Figure 1, for the primary storage body of apparatus of the present invention with from bank structure schematic diagram.
Wherein USB can assign into the exchanges data and instruction transmission realizing in the USB interface of computing machine with computing machine for public mouthful 11; 14 of connectors with from memory bank, join, for realizing to being powered and carry out data transmission from memory bank; Storage chip 13 is for the data of stored user; Control chip 12 is with public mouthful 11 of USB, storage chip 13, connector 14 is connected, and is control core of the present invention place, and it at least comprises following submodule:
1. cryptographic algorithm device, for realizing the block encryption algorithm to data enciphering/deciphering.
2.USB protocol module, the exchanges data and instruction transmission of microprocessor and computing machine all realizes by usb protocol.
3. microprocessor, realize the data interaction and instruction transmission with computing machine, and coordinate other each device co-operation in control chip, and the data after cryptographic algorithm device is encrypted are split as two groups of data A and B by certain particle size, and A is organized to data and B group data store respectively primary storage body into and from the storage chip of memory bank; The granularity splitting can be designed as nibble, byte, word, double word, four words etc., but must be less than the block length of block encryption algorithm, if the data packet length of AES cryptographic algorithm is 128 i.e. 16 bytes, Data Division granularity should be not more than i.e. 8 bytes of four words, to guarantee that the ciphertext of same grouping has respectively 1/2 to be stored in primary storage body and from memory bank.
From memory bank, only comprise the storage chip 16 identical with storage chip 13 types, and do not there is control chip; During use, by connector 15 and primary storage body, join, thereby realize control chip 12, it is read and write to control.
The storage chip of above-mentioned primary storage body is identical with the storage chip type from memory bank, and capacity is identical or different, but according to the principle of work and power that splits storage, should preferably use the chip that capacity is identical, to avoid chip section to divide capacity cannot obtain utilizing, causes waste.
Referring to figs. 2 to Fig. 3, it is the preferred embodiment of apparatus of the present invention.
Wherein primary storage body has been used the Nand Flash that page size is identical and capacity is identical with storage chip 23 and 32 from memory bank, specifically selects the A level FLASH chip of Samsung SAMSUNG company, and model is K9K8G08U0M.This chip package is 12mm x20mm, and memory capacity is 1G * 8bits, by 8 bi-directional data signals, read-write control and chip selection signal, is connected with peripheral control unit, simple to operate.The programming of this chip support page, piece is wiped and page reads, and every page of size is (2K+64) byte, and every comprises 64 pages, i.e. (128K+4K) byte, and chip has 8192 pieces.Read cycle minimum is 30ns, page programming time 200us, and piece erasing time 1.5ms, operating voltage is 2.7V～3.6V.Its read-write feature is: must Yi Yewei unit read and write; Before writing, must first wipe former meaningful; Erase operation must carry out piece, once at least wipes the content of a piece.
Wherein connector 24 is female mouthful of HDMI type C; Connector 31 is the public mouth of HDMI type C matching with connector 24.HDMI interface is HDMI (High Definition Multimedia Interface) (High Definition Multimedia Interface), it is a kind of digitizing audio/video interfacing, can meet the transmission of high-frequency audio/video signal, and the electrostatic prevention requirement when meeting equipment and using.Because the signal pins of Nand Flash is at least 17, so there is the HDMI interface of 19pin, can meet the demand that its read-write is controlled.Adopting type C encapsulation (2.42mm * 10.42mm) is because its width 10.42mm is slightly smaller than the 12mm of Nand Flash width, can meet the undersized demand of device.Fig. 4 shows the pinout figure of connector 24.
Wherein control chip 22 has been used the SSX0905-B safety chip authenticating through national Password Management office.SSX0905-B safety chip is on the basis of the Acrca2CPU of Noah's ark science and technology core, to carry out Safe Transformation to form.Acra2S CPU core is the micro-processor kernel of a high-performance low-power-consumption, has realized Acra second edition instruction set, and adopts Pyatyi flowing water and Harvard's cache structure.Its integrated Liao Dai 32 road complete shut-down connection TLB and the storage unit of section/page physical address protection and instruction and data high-speed cache of 1K byte, makes it have the feature of high-performance, low-power consumption, and is applicable to complicated many application systems.SSX0905-B safety chip supports maximum 4 Nand Flash to transmit with dual channel mode on its basis; simultaneously integrated 9/16ECC data integrity verifying engine; the proprietary firmware protection mechanism ，Ji close SM1 of state and the hardware engine of AES-256 block encryption algorithm.Fig. 5 shows the pinout figure of connector 22.
As optimization, device has also comprised cipher key destruction circuit, and wherein battery module 25 can be main control chip 22 power supplies in the situation that device is not connected with computing machine; Push-button switch 26 one end and battery module join, and the voltage pin of the other end and main control chip 22 and control pin VPP join.Main control chip has also been realized cipher key destruction device.Press after switch 26, be main control chip 22 power supplies activation key and destroy logic.
Fig. 6 shows the simplified diagram of the method according to this invention.Provided a kind of method that realizes data security storage, its core is by using above-mentioned portable data safe storage device realize the encryption of data and divide and deposit function, reaching the object that reduces loss of data risk and improve data storage security.Above-mentioned primary storage body and all can not separate connection computing machine using from memory bank, can only be used in combination, and separately carries, and method specifically comprises the following steps:
With reference to 601 of figure 6, initialization primary storage body and from the storage chip of memory bank;
With reference to 602 of figure 6, obtain data encrypting and deciphering key, initialized cryptographic algorithm device;
With reference to 603 of figure 6, the order that circulation receiving computer sends is also made respective handling.
Further, above-mentioned initialization primary storage body and as follows from the step of the storage chip of memory bank:
The hardware information of initialization storage chip;
Set up the mapping table of logic sector and physical block, make the data of any one logic sector can be saved in primary storage body and simultaneously from the storage chip of memory bank;
The information of enumerating of initialization memory bank, enumerates for operating system.
Further, Fig. 7 shows the process flow diagram of the inventive method preferred embodiment logic sector and physical block mapping, comprises the steps:
With reference to 701 of figure 7, select 2 times to the logic sector of physical block size.The page size of the K9K8G08U0M chip of choosing is (2K+64) byte, and the size of each logic sector is 512 bytes, therefore need to select 2x2K/512=8 logic sector to shine upon with it;
With reference to 702 of figure 7, above-mentioned logic sector is split by byte.The least-significant byte that is each word WORD is split as A group, and most-significant byte is split as B group;
With reference to 703 of figure 7, every group of data are merged, making aforementioned A group, B group data recombination is A, two data blocks of B;
With reference to 704 of figure 7, by two data blocks be mapped as respectively primary storage body with from a physical block of memory bank.
By above mapping, the data that just can realize any one logic sector can be saved in primary storage body simultaneously and from the storage chip of memory bank, realize dividing of data and deposit function.
Further, can also use this device to carry out user identity discriminating, Fig. 8 shows the process flow diagram that the inventive method preferred embodiment identity is differentiated, comprises the steps:
With reference to 801 of figure 8, user inputs password character, sends to control chip 22;
With reference to 802 of figure 8, control chip 22 carries out hash computing by the password of receiving, particularly, carries out 1000 SHA512 computings;
With reference to 803 of figure 8, judge that whether operation result is identical with the authenticate password Hash Value being preset in control chip 22, if identical, enter 804 steps, otherwise enter 805 steps.Because to be stored in authenticate password data in control chip 22 are user passwords through the result of hash computing repeatedly, therefore guaranteed the security of user password;
With reference to 804 of figure 8, user can carry out data read-write operation to storage chip;
With reference to 805 of figure 8, refusal user carries out data read-write operation to storage chip.
Further, can also use this device to carry out cipher key destruction in emergency circumstances, Fig. 9 shows the process flow diagram that the inventive method preferred embodiment is destroyed key, comprises the steps:
With reference to 901 of figure 9, between primary storage body and computing machine, remain open;
With reference to 902 of figure 9, user presses the button formula switch 26, connects main control chip feed circuit;
With reference to 903 of figure 9, it is long by switch 26 that user keeps, and activates main control chip and promptly destroy logic;
With reference to 904 of figure 9, main control chip is deleted the data encrypting and deciphering key being stored in wherein.Because device has been used the SM1/AES-256 block encryption algorithm that current generally recognized as safe intensity is high, so the destruction of data encrypting and deciphering key will make to crack the cipher-text information difficult that becomes.
The above; only the preferred embodiments of the present invention; not the present invention is done to any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a portable data safe storage device, is characterized in that, comprising:
Primary storage body and from memory bank, described primary storage body comprises control chip and storage chip, describedly from memory bank, comprises storage chip and does not have control chip;
Described primary storage body has public mouthful an of USB, and for connecting computing machine, described primary storage body is connected by pair of connectors from memory bank with described;
The storage chip of described primary storage body is identical with the storage chip type from memory bank;
Described control chip comprises:
Cryptographic algorithm device, realizes the block encryption algorithm to data enciphering/deciphering; And
Microprocessor, with computer interactive data and transfer instruction, and coordinate the co-operation of each device in described control chip, and the data after cryptographic algorithm device is encrypted are split as two groups of data A and B by certain particle size, and by A organize in the storage chip that data store primary storage body into, B group data store into from the storage chip of memory bank.
2. portable data safe storage device according to claim 1, is characterized in that, described primary storage body is the identical Nand Flash of page size with the storage chip from memory bank, and capacity is identical or different; The number of pins of described connector is not less than 17.
3. portable data safe storage device according to claim 1 and 2, it is characterized in that, described control chip also comprises cipher key destruction device, it can destroy the data encrypting and deciphering key being stored in described control chip, described primary storage body is also included as the battery of described control chip power supply, and for connecting battery and control chip and activating the push-button switch of described cipher key destruction device.
4. portable data safe storage device according to claim 3, is characterized in that, described connector is HDMI type C (mini HDMI).
5. portable data safe storage device according to claim 4, is characterized in that, described primary storage body is identical with the storage chip capacity from memory bank; Described primary storage body and the described pair of connectors from memory bank are for realizing to powering and carry out data transmission from memory bank; Described battery is that model is the button battery of CR1220; Described cryptographic algorithm device uses AES-256 block encryption algorithm; Described by being byte to the fractionation granularity of data in certain particle size fractionation, the least-significant byte of each word WORD is split as A group, and most-significant byte is split as B group; Described control chip also comprises randomizer, for generation of true random number, as data encrypting and deciphering key.
6. one kind is used portable data safe storage device to realize the method that data security is stored, it is characterized in that, right to use requires the portable data safe storage device described in any one in 1-5, described primary storage body and all can not separate connection computing machine using from memory bank, can only be used in combination, separately carry; Described method comprises the steps:
Initialization primary storage body and from the storage chip of memory bank;
Obtain data encrypting and deciphering key, initialized cryptographic algorithm device;
The order that circulation receiving computer sends is also made respective handling.
7. use portable data safe storage device according to claim 6 is realized the method for data security storage, it is characterized in that described initialization primary storage body and as follows from the step of the storage chip of memory bank:
The hardware information of initialization storage chip;
Set up the mapping table of logic sector and physical block, make the data of any one logic sector can be saved in primary storage body and simultaneously from the storage chip of memory bank;
The information of enumerating of initialization memory bank, enumerates for operating system.
8. according to the use portable data safe storage device described in claim 6 or 7, realize the method for data security storage, it is characterized in that, also comprise that the step of identity discriminating is as follows:
User inputs password character, sends to control chip;
Control chip carries out hash computing by the password of receiving;
Judge that whether operation result is identical with the authenticate password Hash Value being preset in control chip, if the same user can carry out data read-write operation to storage chip, otherwise refuses this operation.
9. use portable data safe storage device according to claim 8 is realized the method for data security storage, it is characterized in that, also comprises that the step of emergency condition destruction key is as follows:
Between primary storage body and computing machine, remain open;
Press the button formula switch, connect main control chip feed circuit;
Keep long by described push-button switch, activate main control chip and promptly destroy logic;
Main control chip is deleted the data encrypting and deciphering key of its storage.
10. use portable data safe storage device according to claim 9 is realized the method for data security storage, it is characterized in that, the step of logic sector and physical block mapping is as follows:
Select 2 times to the logic sector of physical block size;
Described logic sector is split as to two groups by certain particle size;
Every group of data are merged, and the data recombination that makes aforementioned two groups is two data blocks;
Two data blocks are mapped as respectively to primary storage body and from a physical block of memory bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544907.XA CN103617134A (en) | 2013-11-07 | 2013-11-07 | Portable data safety storage device and safety storage implementation method by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544907.XA CN103617134A (en) | 2013-11-07 | 2013-11-07 | Portable data safety storage device and safety storage implementation method by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103617134A true CN103617134A (en) | 2014-03-05 |
Family
ID=50167837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310544907.XA Pending CN103617134A (en) | 2013-11-07 | 2013-11-07 | Portable data safety storage device and safety storage implementation method by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103617134A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105516763A (en) * | 2015-12-09 | 2016-04-20 | 深圳市纽格力科技有限公司 | Encryption and decryption method of certificate authorization card identifying information, device and digital program system |
| CN105656471A (en) * | 2014-12-02 | 2016-06-08 | 联发科技股份有限公司 | System and multi-function control circuit using USB-C interface |
| CN106299892A (en) * | 2015-05-18 | 2017-01-04 | 特通科技有限公司 | USB Type-C connector module |
| CN107346403A (en) * | 2017-07-13 | 2017-11-14 | 北京元心科技有限公司 | Operation method and device of external memory and intelligent terminal |
| CN108875384A (en) * | 2018-06-06 | 2018-11-23 | 国云科技股份有限公司 | An enterprise risk data security fusion system and its implementation method |
| CN108875424A (en) * | 2017-05-10 | 2018-11-23 | 置富科技（深圳）股份有限公司 | It stores terminal and its destroys data processing method and device |
| CN108920964A (en) * | 2018-06-21 | 2018-11-30 | 深圳忆联信息系统有限公司 | Reconfigurable hardware encipher-decipher method, system, computer equipment and storage medium |
| CN116094697A (en) * | 2022-12-29 | 2023-05-09 | 河北素数信息安全有限公司 | Portable secret key safety distributing and transferring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510245A (en) * | 2009-03-06 | 2009-08-19 | 苏州国芯科技有限公司 | High speed encryption and decryption USB bridging chip and chip high speed encryption and decryption method |
| CN101840310A (en) * | 2009-12-25 | 2010-09-22 | 创新科存储技术有限公司 | Data read-write method and disk array system using same |
| CN101968774A (en) * | 2010-10-21 | 2011-02-09 | 中国人民解放军61938部队 | Device and method for storing mobile data safely |
| US20120102295A1 (en) * | 2010-10-25 | 2012-04-26 | Xueshi Yang | Data compression and encoding in a memory system |
-
2013
- 2013-11-07 CN CN201310544907.XA patent/CN103617134A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510245A (en) * | 2009-03-06 | 2009-08-19 | 苏州国芯科技有限公司 | High speed encryption and decryption USB bridging chip and chip high speed encryption and decryption method |
| CN101840310A (en) * | 2009-12-25 | 2010-09-22 | 创新科存储技术有限公司 | Data read-write method and disk array system using same |
| CN101968774A (en) * | 2010-10-21 | 2011-02-09 | 中国人民解放军61938部队 | Device and method for storing mobile data safely |
| US20120102295A1 (en) * | 2010-10-25 | 2012-04-26 | Xueshi Yang | Data compression and encoding in a memory system |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656471A (en) * | 2014-12-02 | 2016-06-08 | 联发科技股份有限公司 | System and multi-function control circuit using USB-C interface |
| US9971719B2 (en) | 2014-12-02 | 2018-05-15 | Mediatek Inc. | System and circuit using USB Type-C interface |
| CN105656471B (en) * | 2014-12-02 | 2018-11-02 | 联发科技股份有限公司 | System using USB-C type interface and multifunctional control circuit |
| CN106299892A (en) * | 2015-05-18 | 2017-01-04 | 特通科技有限公司 | USB Type-C connector module |
| CN106299892B (en) * | 2015-05-18 | 2018-10-26 | 特通科技有限公司 | USB Type-C connector module |
| CN105516763A (en) * | 2015-12-09 | 2016-04-20 | 深圳市纽格力科技有限公司 | Encryption and decryption method of certificate authorization card identifying information, device and digital program system |
| CN105516763B (en) * | 2015-12-09 | 2019-05-31 | 深圳市纽格力科技有限公司 | Method, device and digital program system for encryption and decryption of identification information of certificate authority card |
| CN108875424A (en) * | 2017-05-10 | 2018-11-23 | 置富科技（深圳）股份有限公司 | It stores terminal and its destroys data processing method and device |
| CN107346403A (en) * | 2017-07-13 | 2017-11-14 | 北京元心科技有限公司 | Operation method and device of external memory and intelligent terminal |
| CN107346403B (en) * | 2017-07-13 | 2020-08-28 | 北京元心科技有限公司 | Operation method and device of external memory and intelligent terminal |
| CN108875384A (en) * | 2018-06-06 | 2018-11-23 | 国云科技股份有限公司 | An enterprise risk data security fusion system and its implementation method |
| CN108920964A (en) * | 2018-06-21 | 2018-11-30 | 深圳忆联信息系统有限公司 | Reconfigurable hardware encipher-decipher method, system, computer equipment and storage medium |
| CN108920964B (en) * | 2018-06-21 | 2020-09-29 | 深圳忆联信息系统有限公司 | Reconfigurable hardware encryption and decryption method, system, computer equipment and storage medium |
| CN116094697A (en) * | 2022-12-29 | 2023-05-09 | 河北素数信息安全有限公司 | Portable secret key safety distributing and transferring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103617134A (en) | Portable data safety storage device and safety storage implementation method by same | |
| CN202650015U (en) | System for access of encrypted memory | |
| US20210312071A1 (en) | Method and apparatus for securing data in multiple independent channels | |
| CN101196855A (en) | Mobile encrypted memory device and cipher text storage area data encrypting and deciphering processing method | |
| CN101551784A (en) | Method and device for encrypting data in ATA memory device with USB interface | |
| CN101582109A (en) | Data encryption method and device, data decryption method and device and solid state disk | |
| CN209402526U (en) | Security Chip Key Storage Device | |
| CN102932140A (en) | Key backup method for enhancing safety of cipher machine | |
| CN107154843A (en) | A kind of system for implementing hardware of the SM4 algorithms of anti-power consumption attack | |
| CN105095945A (en) | SD card capable of securely storing data | |
| CN103020549B (en) | The protective device of memory and storage device | |
| TW202042092A (en) | Password-protected data storage device and control method for non-volatile memory | |
| CN105740733B (en) | A kind of encryption mobile hard disk and its implementation | |
| CN102201044A (en) | Universal serial bus (USB) security key | |
| CN106326754A (en) | Data transmission encryption device implemented based on PCIE (Peripheral Component Interface Express) interface | |
| CN110674515A (en) | A multi-level secure memory chip architecture | |
| CN102609368B (en) | Solid-state-drive data encryption and decryption method and solid state drive | |
| CN203930840U (en) | A kind of hardware encryption card | |
| CN204808325U (en) | Carry out black equipment to data | |
| CN103400087A (en) | Multi-interface encryption board card | |
| CN106100829A (en) | The method and device of encryption storage | |
| CN101950345A (en) | Hardware decryption-based high-reliability terminal equipment and working method thereof | |
| CN207367209U (en) | From encryption hard-disk system | |
| CN107070658B (en) | Improved method of system encryption authentication mechanism | |
| CN103839012A (en) | Flash encrypted storage device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| 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: 20140305 |