CN104794071A - Method and system for unfreezing and adding coded lock on computer SATA hard disk based on USB flash disk - Google Patents
Method and system for unfreezing and adding coded lock on computer SATA hard disk based on USB flash disk Download PDFInfo
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Abstract
The invention relates to a method for unfreezing and adding a coded lock on a computer SATA hard disk based on a USB flash disk, and an SATA coded lock is connected with the a computer mainboard through a USB interface. The method comprises the following steps that the I/O port address of a mainboard SATA socket corresponding to the SATA hard disk is acquired; unfreezing is performed, and whether the SATA hard disk exists is circularly detected; the SATA hard disk is locked; the SATA hard disk can be used after being locked. According to the scheme, compared with the protective measures such as BIOS/CMOS codes of a computer, Windows codes and the application program code technology, an unlicensed user can be thoroughly prevented from checking sensitive information in the hard disk, and even though the hard disk of a user is lost or stolen, the user does not need to worry about that the sensitive information in the hard disk is leaked out; the method and system can be widely applied to the computer with the confidentiality requirement and are especially suitable for protecting enterprise business confidential information and individual privacy, meanwhile, the safety is high, and use is easy.
Description
Technical field
The present invention relates to computer safety field, particularly relate to a kind of computing machine SATA hard disc is thawed and the method and system of encrypted code lock based on USB flash disk.
Background technology
SATA hard disc has the features such as interface is simple, low in energy consumption, transfer rate is high, data check measure is more perfect, and it has replaced traditional ide interface hard disk, becomes the indispensable data storage part in modern computing machine architecture.
SATA hard disc follows ATA host-host protocol specification equally, completes the data transmission between computing machine.Concentrate in ATA transport protocol command, the order of the data security performance feature (Security feature) of involving hard disc has: arrange password and automatic lockout (Security Set Password), unlock (Security Unlock), remove password (Security Disable Password), freezing (Security Freeze Lock), data dump (Security Erase Prepare and Security Erase Unit).Computing machine sends these data security orders by hard disk controller interface to SATA hard disc, makes SATA hard disc enter corresponding safe condition, thus prevents illegal reading writing harddisk, protect the secure user data of hard disk.
Password is set and automatic lockout (Security Set Password) order: password setting is carried out to SATA hard disc, preserves password after SATA hard disc controller receives order and successfully lock, being in user data lock-out state.Only allow under this state send and perform unblock, data dump, hard disk diagnostic test, non-user data read write command, do not allow the user data in reading writing harddisk.
Unlock (Security Unlock) order: password is sent to the SATA hard disc after locking, successful unlock after SATA hard disc controller verification password is correct, be in non-user data lock-out state, allow send and perform all orders, computing machine normally can read and write SATA hard disc.When unlocking actual effect after SATA hard disc power down, be still in user data lock-out state.
Remove password (Security Disable Password) order: after sending unlock command, then to this order of SATA hard disc and password, then SATA hard disc controller verification password correctly after successfully remove password, be in non-user data lock-out state after power down.Allow under this state send and perform all orders, computing machine normally can read and write SATA hard disc.
Freezing (Security Freeze Lock) orders: make the SATA hard disc being in non-user data lock-out state enter security performance order freezing state, prevents from illegally carrying out locking, unlocks, removes the operation such as password, data dump.Allow under this state to send and perform except password is set and automatic lockout, unblock, releasing password, other order except data dump order, computing machine normally can read and write SATA hard disc.Freezing state automatically terminates after SATA hard disc power down or hard reset.
Data dump (Security Erase Prepare and Security Erase Unit) is ordered: no matter SATA hard disc is in non-user data locking or user data lock-out state, password when sending this order to SATA hard disc and lock, after SATA hard disc controller verification password is correct, dispose by all user data.
In modern computer, when after system power-up initialization, the secure user data performance state processing mode of mainboard BIOS to SATA hard disc has two kinds: one to be user data lock-out state, after sending Security Set Password command set password, SATA hard disc is locked, user is needed to input password during each start thereafter, password correctly then normally can access SATA hard disc, otherwise the user data of refusal read-write SATA hard disc.This mode needs user to keep password firmly in mind, and adds the loaded down with trivial details of user and inconvenience, therefore most of PC no longer adopts.Two is freezing states, and by sending Freeze Lock order to SATA hard disc, make SATA hard disc be in security performance order freezing state, no longer perform other security performance order, computing machine can read and write arbitrarily the user data of SATA hard disc.Freezing state automatically terminates after SATA hard disc power down or hard reset, and this is the processing mode that current most of PC adopts SATA hard disc.
Summary of the invention
For produced problem in background technology, the present invention proposes a kind of thawing to computing machine SATA hard disc and the method and system of encrypted code lock based on USB flash disk, and the Hard-disk Lock in this programme is a kind of class locking device of USB flash disk form, binds use with hard disk.It comprehensively uses hardware and software technology, hard disc of computer can be locked.After hard disk is lockable, unauthorized user can not reading writing harddisk, can not obtain any hard disk media data.Insert USB flash disk when only having computing machine to power up startup, after unlocking hard disk, computing machine could normally use.
Computing machine SATA hard disc is thawed and the method for encrypted code lock based on USB flash disk that this programme provides, SATA coded lock is connected with computer motherboard by USB interface, said method comprising the steps of:
Step a. obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc;
Step b. thaws and described in cycle detection, whether SATA hard disc exists;
Step c locks to described SATA hard disc;
Steps d. described in lock after use.
Preferably, described step a comprises the following steps:
Computer system bootloader;
Mainboard BIOS jumps to described USB flash disk and starts;
Hard disk controller interface configuration data module reads the hard disk controller interface configuration data in mainboard BIOS, obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc;
Shut down computer, the data line of described SATA hard disc is pulled up from SATA hard disc.
In above-mentioned either a program preferably, described step b comprises the following steps:
Again computer system is powered up;
Jump to described USB flash disk after mainboard BIOS initialization to start;
The data line of SATA hard disc " is please inserted hard disk " by system software prompting, SATA hard disc detection module carries out hard disk and there is detection, if detect hard disk, forward lower step to, otherwise the prompting data line of a plug SATA hard disc " please again ", after again pulling up, postpone and inserting the data line of SATA hard disc again in several seconds, software cycles detects, until detect hard disk.
In above-mentioned either a program preferably, described step c comprises the following steps:
System software prompting " password of maximum 32 please be input ";
User carries out password setting, and system software receives and preserves;
SATA hard disc security order sending module, by mainboard SATA hard disc I/O port address, sends and arranges password and the password that automatic lockout order inputs together with user is sent to SATA hard disc;
Hard disk controller is preserved this password and is completed and lock, and described SATA hard disc is in user data lock-out state automatically; System-down, must restart or shut down computer.
In above-mentioned either a program preferably, described steps d comprises the following steps:
After restarting computing machine, jump to USB flash disk after mainboard BIOS initialization and start;
SATA hard disc detection module carries out SATA hard disc state-detection, if detect, hard disk does not lock/freezing state, then point out " hard disk does not lock ", go to step a, if detect, hard disk locks, then SATA hard disc security order sending module sends the user cipher of unlock command and preservation to SATA hard disc by mainboard SATA hard disc I/O port address;
Successful unlock after SATA hard disc controller verification password is correct, computing machine normally reads and writes SATA hard disc;
Described SATA hard disc security order sending module sends freezing order, makes described SATA hard disc be in freezing state, no longer performs other security performance order;
Power of program being run jumps to mainboard hard disk and guides operating system, normally reads and writes SATA hard disc;
Described USB flash disk is pulled up from mainboard USB port, until computing machine completes the operation of normal read-write SATA hard disc, inserts again after hard reset or shutdown, upper once restart computing machine time SATA hard disc is unlocked.
Present invention also offers a kind of computing machine SATA hard disc is thawed and the system of encrypted code lock based on USB flash disk, SATA coded lock is connected with computer motherboard by USB interface, described SATA coded lock comprises standard U disk hardware logic and firmware, and described SATA coded lock comprises hard disk controller interface configuration data module, SATA hard disc detection module, SATA hard disc security order sending module further.
Preferably, described hard disk controller interface configuration data module, for reading the hard disk controller interface configuration data in mainboard BIOS, obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc.
In above-mentioned either a program preferably, described SATA hard disc detection module is used for carrying out hard disk Detection of Existence.
In above-mentioned either a program preferably, described SATA hard disc security order sending module is sent by mainboard SATA hard disc I/O port address and arranges password and the password that automatic lockout order inputs together with user is sent to SATA hard disc.
In above-mentioned either a program preferably, described SATA coded lock and the binding of SATA hard disc one_to_one corresponding.
In above-mentioned either a program preferably, the compatible SATA1/SATA2/SATA3 hard disk of described SATA coded lock.
In above-mentioned either a program preferably, described SATA coded lock message transmission rate is 480Mbps.
In above-mentioned either a program preferably, described SATA coded lock size 42 x 17 x 5 mm.
In above-mentioned either a program preferably, described SATA coded lock weight 24 g.
This programme is compared BIOS/CMOS password, the safeguard procedures such as window password and Application Password technology of computing machine, and Hard-disk Lock technology more thoroughly prevents unauthorized user from checking sensitive information on hard disk.Even if user's hard disk lose or stolen, do not worry that the sensitive data on it leaks out yet, this programme can be widely used in having on the computing machine of privacy requirements, be particularly suitable for protection Enterprise business confidential information and individual privacy, simultaneously security is high: on the hardware level of hard disk controller, carry out authentication and identification, cannot bypassing authentication mechanism; Use simple: only insert USB Hard-disk Lock when starting shooting, hard disk can be pulled up after unlocking, and does not change the original operating habit of user; Applicability is wide: product and operating system have nothing to do, and there is not operating system and software compatibility issue.
Accompanying drawing explanation
Fig. 1 is according to thawing to computing machine SATA hard disc and the method flow diagram of encrypted code lock based on USB flash disk of the present invention.
Fig. 2 is the method flow diagram of the preferred embodiment according to Fig. 1 step a.
Fig. 3 is the method flow diagram of the preferred embodiment according to Fig. 1 step b, c.
Fig. 4 is the method flow diagram of the preferred embodiment according to Fig. 1 steps d.
Fig. 5 is according to thawing to computing machine SATA hard disc and the system chart of encrypted code lock based on USB flash disk of the present invention.
Embodiment
Describe the present invention in conjunction with exemplary embodiment with reference to the accompanying drawings.
Embodiment 1:
As shown in Figure 1, computing machine SATA hard disc thaw and encrypted code lock the total step of method as follows:
Step a. obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc;
Step b. thaws and described in cycle detection, whether SATA hard disc exists;
Step c locks to described SATA hard disc;
Steps d. described in lock after use.
Wherein, SATA coded lock is connected with computer motherboard by USB interface.
In the present embodiment, SATA coded lock is realized by USB flash disk, wherein step a specific implementation as shown in Figure 2, when after computer system bootloader, mainboard BIOS jumps to native system USB flash disk and starts, automatic operation hard disk controller interface configuration data module reads the hard disk controller interface configuration data in mainboard BIOS, obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc.Then shut down, the data line of SATA hard disc is pulled up from SATA hard disc.
Wherein the specific implementation of step b and step c as shown in Figure 3, powers up computer system again, and because the data line of SATA hard disc is not connected to mainboard, so after completing initializes itself, SATA hard disc is in not freezing waiting status.Start when jumping to native system software USB flash disk after mainboard BIOS initialization, the data line of SATA hard disc " is please inserted hard disk " by native system software prompt, and SATA hard disc detection module carries out hard disk and there is detection, if detect hard disk, forwards lower step to; Otherwise the prompting data line of a plug SATA hard disc " please again ", after user pulls up again, postpones to insert the data line of SATA hard disc again in several seconds, software cycles detects, until detect hard disk.
Native system software prompt " please input the password of maximum 32 ", when user carries out password after setting completed, system software receives and preserves, then mainboard SATA hard disc I/O port address is passed through by the SATA hard disc security order sending module of system, transmission arranges password and automatic lockout (Security Set Password) orders the password inputted together with user to SATA hard disc, hard disk controller is preserved this password and is successfully locked, and is automatically in user data lock-out state.System-down, must restart or shut down computer.
After restarting computing machine, as shown in Figure 4, jump to native system software USB flash disk after mainboard BIOS initialization and start, SATA hard disc detection module carries out SATA hard disc state-detection to implementation.If detect hard disk and do not lock/freezing state, then point out " hard disk does not lock ", system-down forwards step shown in Fig. 1 to.If detect hard disk to lock, then pass through mainboard SATA hard disc I/O port address by the SATA hard disc security order sending module of system, send and unlock (Security Unlock) order together with the user cipher preserved to SATA hard disc, successful unlock after SATA hard disc controller verification password is correct, computing machine normally can read and write SATA hard disc; Then SATA hard disc security order sending module sends freezing (Security Freeze Lock) order, makes SATA hard disc be in freezing state, no longer performs other security performance order.Then program is run power and is jumped to mainboard hard disk guiding operating system by native system software, normally reads and writes SATA hard disc.Finally native system USB flash disk is pulled up from mainboard USB port, until computing machine completes the operation of normal read-write SATA hard disc, inserts again after hard reset or shutdown, upper once restart computing machine time SATA hard disc is unlocked.
SATA(Serial ATA described in the present embodiment) hard disk of mouth is serial port hard disk again, and be the trend of following PC hard disk, now substantially instead of traditional PATA hard disk.The full name of SATA is Serial Advanced Technology Attachment, Intel, APT, Dell, IBM, Seagate, the Serial ATA council opening up this several large manufacturers composition advanced in years formally establish Serial ATA 1.0 specification, 2002, although the relevant device of serial ATA is non-official listing also, the Serial ATA council has tried to be the first and has established Serial ATA 2.0 specification.Serial ATA adopts mode connected in series, Serial ATA bus uses embedded clock signal, possesses stronger error correcting capability, its maximum difference compared with the past is to check transfer instruction (being not only data), if find mistake meeting automatic straightening, something which increases the reliability of data transmission.Serial line interface also has the advantage that structure is simple, support hot plug.Traditional Parallel ATA uses single mode signal amplification system " single-end-signal-amplified-system ".In such systems, noise can transmit together along with normal signal, amplify, not easily suppressed; Especially serious when high speed, in order to effectively reduce the interference of noise, we have to use voltage up to 5V to transmit n-normal signal, make the normal signal lid of large voltage cross the noise signal of small voltage.Although large voltage can effective restraint speckle, but large voltage also represents that therefore the production cost of driving circuit will rise simultaneously, large voltage is more unfavorable for the Design and manufacture of high speed transmission system, and the transmission voltage up to 5V limits to be pursued at a high speed and the possibility of low cost.
The beneficial effect of the present embodiment: this programme is compared BIOS/CMOS password, the safeguard procedures such as window password and Application Password technology of computing machine; more thoroughly prevent unauthorized user from checking sensitive information on hard disk; even if user's hard disk lose or stolen; do not worry that the sensitive data on it leaks out yet; can be widely used in having on the computing machine of privacy requirements; be particularly suitable for protection Enterprise business confidential information and individual privacy, security is simultaneously high, use is simple.
Embodiment 2:
As shown in Figure 5, be computing machine SATA hard disc is thawed and the system chart of encrypted code lock based on USB flash disk.Wherein, computer platform is connected by USB interface with SATA hard disc coded lock, and computer platform is generally the equipment that notebook computer, desktop computer etc. possess hard disk.
When the hard disk on computing machine is in security performance freezing state, for ide interface hard disk, computing machine itself cannot be utilized to carry out thawing and the work that locks, must complete first by means of other equipment.For SATA interface hard disk, due to the characteristic of its supported data line hot plug, historical facts or anecdotes executes native system.
As in background technology introduce, SATA hard disc follows ATA host-host protocol specification equally, complete between computing machine data transmission.Concentrate in ATA transport protocol command, the order of the data security performance feature (Security feature) of involving hard disc has: arrange password and automatic lockout (Security Set Password), unlock (Security Unlock), remove password (Security Disable Password), freezing (Security Freeze Lock), data dump (Security Erase Prepare and Security Erase Unit).Computing machine sends these data security orders by hard disk controller interface to SATA hard disc, makes SATA hard disc enter corresponding safe condition, thus prevents illegal reading writing harddisk, protect the secure user data of hard disk.
Wherein, SATA hard disc coded lock includes standard U disk hardware logic and firmware, and components of system as directed includes hard disk controller interface configuration data module, whether detection SATA hard disc exists module and send SATA hard disc security command module.Described hard disk controller interface configuration data module, for reading the hard disk controller interface configuration data in mainboard BIOS, obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc; Whether described detection SATA hard disc exists module for carrying out hard disk Detection of Existence; Described transmission SATA hard disc security command module arranges password by the transmission of mainboard SATA hard disc I/O port address and the password that automatic lockout order inputs together with user is sent to SATA hard disc.
In the present embodiment, encryption method utilizes the encrypted command of hard disk itself and gives specific embodiments, that is: step a. obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc; Step b. thaws and described in cycle detection, whether SATA hard disc exists; Step c locks to described SATA hard disc; Steps d. described in lock after use.Wherein, in the concrete process utilizing hard drive protocol itself to encrypt be: computer system bootloader; Mainboard BIOS jumps to described USB flash disk and starts; Hard disk controller interface configuration data module reads the hard disk controller interface configuration data in mainboard BIOS, obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc; Shut down computer, the data line of described SATA hard disc is pulled up from SATA hard disc.Again computer system is powered up; Jump to described USB flash disk after mainboard BIOS initialization to start; The data line of SATA hard disc " is please inserted hard disk " by system software prompting, SATA hard disc detection module carries out hard disk and there is detection, if detect hard disk, forward lower step to, otherwise the prompting data line of a plug SATA hard disc " please again ", after again pulling up, postpone and inserting the data line of SATA hard disc again in several seconds, software cycles detects, until detect hard disk.System software prompting " password of maximum 32 please be input "; User carries out password setting, and system software receives and preserves; SATA hard disc security order sending module, by mainboard SATA hard disc I/O port address, sends and arranges password and the password that automatic lockout order inputs together with user is sent to SATA hard disc; Hard disk controller is preserved this password and is completed and lock, and described SATA hard disc is in user data lock-out state automatically; System-down, must restart or shut down computer.After restarting computing machine, jump to USB flash disk after mainboard BIOS initialization and start; SATA hard disc detection module carries out SATA hard disc state-detection, if detect, hard disk does not lock/freezing state, then point out " hard disk does not lock ", go to step a, if detect, hard disk locks, then SATA hard disc security order sending module sends the user cipher of unlock command and preservation to SATA hard disc by mainboard SATA hard disc I/O port address; Successful unlock after SATA hard disc controller verification password is correct, computing machine normally reads and writes SATA hard disc; Described SATA hard disc security order sending module sends freezing order, makes described SATA hard disc be in freezing state, no longer performs other security performance order; Power of program being run jumps to mainboard hard disk and guides operating system, normally reads and writes SATA hard disc; Described USB flash disk is pulled up from mainboard USB port, until computing machine completes the operation of normal read-write SATA hard disc, inserts again after hard reset or shutdown, upper once restart computing machine time SATA hard disc is unlocked.
Beneficial effect: this programme is compared BIOS/CMOS password, the safeguard procedures such as window password and Application Password technology of computing machine; more thoroughly prevent unauthorized user from checking sensitive information on hard disk; even if user's hard disk lose or stolen; do not worry that the sensitive data on it leaks out yet; can be widely used in having on the computing machine of privacy requirements; be particularly suitable for protection Enterprise business confidential information and individual privacy, security is simultaneously high, use is simple.
In order to understand the present invention better, in conjunction with specific embodiments the present invention to be explained in detail above.But, obviously can carry out different modification and remodeling to the present invention and not exceed the wider spirit and scope of the present invention that claim limits.Therefore, above embodiment has exemplary and hard-core implication.
Claims (10)
1. computing machine SATA hard disc is thawed and a method for encrypted code lock based on USB flash disk, SATA coded lock is connected with computer motherboard by USB interface, it is characterized in that, said method comprising the steps of:
Step a. obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc;
Step b. thaws and described in cycle detection, whether SATA hard disc exists;
Step c locks to described SATA hard disc;
Steps d. described in lock after use.
2. computing machine SATA hard disc is thawed and the method for encrypted code lock based on USB flash disk according to claim 1, it is characterized in that, described step a comprises the following steps:
Computer system bootloader;
Mainboard BIOS jumps to described USB flash disk and starts;
Hard disk controller interface configuration data module reads the hard disk controller interface configuration data in mainboard BIOS, obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc;
Shut down computer, the data line of described SATA hard disc is pulled up from SATA hard disc.
3. computing machine SATA hard disc is thawed and the method for encrypted code lock based on USB flash disk according to claim 1, it is characterized in that, described step b comprises the following steps:
Again computer system is powered up;
Jump to described USB flash disk after mainboard BIOS initialization to start;
The data line of SATA hard disc " is please inserted hard disk " by system software prompting, SATA hard disc detection module carries out hard disk and there is detection, if detect hard disk, forward lower step to, otherwise the prompting data line of a plug SATA hard disc " please again ", after again pulling up, postpone and inserting the data line of SATA hard disc again in several seconds, software cycles detects, until detect hard disk.
4. computing machine SATA hard disc is thawed and the method for encrypted code lock based on USB flash disk according to claim 1, it is characterized in that, described step c comprises the following steps:
System software prompting " password of maximum 32 please be input ";
User carries out password setting, and system software receives and preserves;
SATA hard disc security order sending module, by mainboard SATA hard disc I/O port address, sends and arranges password and the password that automatic lockout order inputs together with user is sent to SATA hard disc;
Hard disk controller is preserved this password and is completed and lock, and described SATA hard disc is in user data lock-out state automatically; System-down, must restart or shut down computer.
5. computing machine SATA hard disc is thawed and the method for encrypted code lock based on USB flash disk according to claim 1, it is characterized in that, described steps d comprises the following steps:
After restarting computing machine, jump to USB flash disk after mainboard BIOS initialization and start;
SATA hard disc detection module carries out SATA hard disc state-detection, if detect, hard disk does not lock/freezing state, then point out " hard disk does not lock ", go to step a, if detect, hard disk locks, then SATA hard disc security order sending module sends the user cipher of unlock command and preservation to SATA hard disc by mainboard SATA hard disc I/O port address;
Successful unlock after SATA hard disc controller verification password is correct, computing machine normally reads and writes SATA hard disc;
Described SATA hard disc security order sending module sends freezing order, makes described SATA hard disc be in freezing state, no longer performs other security performance order;
Power of program being run jumps to mainboard hard disk and guides operating system, normally reads and writes SATA hard disc;
Described USB flash disk is pulled up from mainboard USB port, until computing machine completes the operation of normal read-write SATA hard disc, inserts again after hard reset or shutdown, upper once restart computing machine time SATA hard disc is unlocked.
6. computing machine SATA hard disc is thawed and the system of encrypted code lock based on USB flash disk, SATA coded lock is connected with computer motherboard by USB interface, described SATA coded lock comprises standard U disk hardware logic and firmware, it is characterized in that, described SATA coded lock comprises hard disk controller interface configuration data module, SATA hard disc detection module, SATA hard disc security order sending module further.
7. computing machine SATA hard disc is thawed and the system of encrypted code lock based on USB flash disk according to claim 6, it is characterized in that, described hard disk controller interface configuration data module, for reading the hard disk controller interface configuration data in mainboard BIOS, obtains the I/O port address of mainboard SATA socket corresponding to SATA hard disc.
8. thawing to computing machine SATA hard disc and the system of encrypted code lock based on USB flash disk according to claim 6, it is characterized in that, described SATA hard disc detection module is used for carrying out hard disk Detection of Existence.
9. computing machine SATA hard disc is thawed and the system of encrypted code lock based on USB flash disk according to claim 6, it is characterized in that, described SATA hard disc security order sending module arranges password by the transmission of mainboard SATA hard disc I/O port address and the password that automatic lockout order inputs together with user is sent to SATA hard disc.
10. thawing to computing machine SATA hard disc and the system of encrypted code lock based on USB flash disk according to claim 6, is characterized in that, described SATA coded lock and the binding of SATA hard disc one_to_one corresponding.
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| 中国计算机学会计算机安全专业委员会: "《信息与网络安全研究新进展 全国计算机安全学术交流会论文集》", 30 September 2010, 中国科学技术大学出版社 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776765A (en) * | 2018-06-11 | 2018-11-09 | 山东超越数控电子股份有限公司 | A kind of hard disk data protection method and device |
| CN109190364A (en) * | 2018-08-01 | 2019-01-11 | 杭州电子科技大学 | A kind of safe U disc for solid state hard disk authentication |
| CN111726563A (en) * | 2019-03-19 | 2020-09-29 | 中车株洲电力机车研究所有限公司 | Video storage device for train video monitoring system |
| CN114265546A (en) * | 2020-09-16 | 2022-04-01 | 昆达电脑科技(昆山)有限公司 | Servo device and servo system |
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