CN102662804A - Power-down-prevention irreversible self-destroying method for solid state disk - Google Patents
Power-down-prevention irreversible self-destroying method for solid state disk Download PDFInfo
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- CN102662804A CN102662804A CN2012100756664A CN201210075666A CN102662804A CN 102662804 A CN102662804 A CN 102662804A CN 2012100756664 A CN2012100756664 A CN 2012100756664A CN 201210075666 A CN201210075666 A CN 201210075666A CN 102662804 A CN102662804 A CN 102662804A
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Abstract
The invention provides a power-down-prevention irreversible self-destroying method for a solid state disk. The self-destroying method comprises the following steps: a power circuit, a battery charge-discharge circuit and a power supply control circuit are added in the solid state disk; when in power down, the solid state disk can still work; and after the solid state disk is erased completely, an SSD (solid state disk) controller informs a power supply controller of turning off the power supply. Compared with the prior art, the power-down-prevention irreversible self-destroying method for the solid state disk can prevent data from being maliciously tampered, stolen or disclosed without authorization, thereby having excellent popularization and application values.
Description
Technical field
The present invention relates to the safety and the concerning security matters field of data storage, the method for the anti-irreversible self-destruction of power down of a kind of solid state hard disc specifically is provided.
Technical background
Solid state hard disc (Solid State Disk) is called for short SSD, and the hard disk of promptly processing with solid-state electronic storage chip array is made up of control module and storage unit (NandFLASH chip) two parts.Storage unit is responsible for storing data, and control module is responsible for reading, writing data.It is fast to have speed, durable shockproof, noiselessness, advantage such as in light weight, working temperature is wide in range.Therefore, solid state hard disc is widely used in fields such as military affairs, vehicle-mounted, industry control, video monitoring, network monitoring, the network terminal, electric power, medical treatment, aviation, navigator as storage medium.
Generally speaking, after the data deletion on the storage medium,, still can retrieve these data the more halfway result of data destroying that Here it is if take certain technological means.Our so-called data destroying then is to let data thoroughly can't recover to read, even if professional and professional equipment also can't restore data.
For conventional hard, the reliability requirement of the demand of data destroying and hard disk itself is a contradiction, and the appearance of solid state hard disc has solved this problem just.The solid state hard disc self-destruction has three kinds, and first kind is the BLOCK that fast erasing FAT epiphase closes, though speed is fast, content is not wiped, and can't destroy data fully; Second kind is the BLOCK that wipes All Files, and erasing speed is slow, on average wipes a BLOCK near 0.2s, if BLOCK is a lot, the erasing time is very long, and power down this moment just exists can't wipe clean risk; The third is to generate high pressure to burn chip, physically thoroughly destroys, and this is the very high pattern of a kind of security level required.An important indicator weighing data destroying is exactly to destroy the required time, and the soft destruction of the data of 128GB solid state hard disc only needs tens seconds, and physical destroying only needs several seconds, and solid state hard disc can satisfy data destroying demand in emergency circumstances.
All is to have adopted NAND Flash on the SSD now,, when writing data, all need wipes again earlier and write that this specific character has determined the good confidentiality of NAND Flash because NAND Flash uses the mode of address wire that data are carried out unified management.In case the position (grid) at data place was rewritten new data, information so in the past can be erased thoroughly.
When the solid state hard disc carry is on equipment, the power supply normal power supply, it is no problem to carry out the data transmission storage, but when running into the emergency condition outage, data destroying then can't be carried out.
Summary of the invention
Technical assignment of the present invention is the deficiency that solves prior art, and the method for the anti-irreversible self-destruction of power down of a kind of solid state hard disc is provided.
Technical scheme of the present invention realizes by following mode, the method for the anti-irreversible self-destruction of power down of this a kind of solid state hard disc, and its concrete performing step comprises:
Step 1; Design a SSD motherboard circuit, comprise control module, storage unit, the power circuit of realizing memory function in this SSD motherboard circuit, control module connects storage unit; In circuit, increase power control circuit, battery charging and discharging circuit and battery; Battery connects the battery charging and discharging circuit, and the battery charging and discharging circuit also is connected with control module, power circuit and power control circuit, and power control circuit connects power circuit and control module;
Step 2, carry out the data destroying process:
1), in normal operation, the power supply power supply is normal, the circuit operate as normal; Storage transmission between control module control external data and the storage unit, the power supply power circuit detects whether input state of power supply simultaneously, when the normal power supply state of power supply input is arranged; Control circuit control charge-discharge circuit is to battery charge; This moment, if normal power supply when needing data destroying, can be carried out the normal power supply data destroying;
2), sudden power need be destroyed data or carried out data destroying and when being de-energized suddenly; Power control circuit detects external power source and is cut off; This moment, power control circuit was controlled charge-discharge circuit to battery discharge, and the SSD mainboard is supplied power guarantees that it still can work on to carry out data destroying;
3), after data are destroyed fully, control module notice power control circuit powered-down.
Said control module is meant the SSD controller.
Said power control circuit is meant power-supply controller of electric.
Said storage unit is meant NAND Flash internal memory.
The beneficial effect that the present invention is compared with prior art produced is:
The method of the anti-irreversible self-destruction of power down of a kind of solid state hard disc of the present invention increases power circuit, battery charging and discharging circuit and power control circuit in solid state hard disc; Solid state hard disc still can work on when power down; After wiping fully, SSD controller notice power-supply controller of electric powered-down.This kind destruction mechanism not can because of this storage characteristics device by power down with remove and stop.Give the defence of integrality to the data of confidentiality, altered, stealing or leaking by malice under the situation without permission to avoid data, thereby having good value for applications.
Description of drawings
Accompanying drawing 1 is a realization principle schematic of the present invention.
Embodiment
Below in conjunction with accompanying drawing the method for the anti-irreversible self-destruction of power down of a kind of solid state hard disc of the present invention is done following the detailed description.
For under powering-off state, solid state hard disc also can be carried out data destroying.Shown in accompanying drawing 1, the method for the anti-irreversible self-destruction of power down of a kind of solid state hard disc is provided at present, its concrete performing step comprises:
Step 1; Design a SSD motherboard circuit; Comprise control module SSD controller, storage unit NAND Flash internal memory, the power circuit of realizing memory function in this SSD motherboard circuit, said power circuit is used to detect whether power down of power supply, and control module connects storage unit; In circuit, increasing power control circuit is power-supply controller of electric, battery charging and discharging circuit and battery; Battery connects the battery charging and discharging circuit, and the battery charging and discharging circuit also is connected with control module, power circuit and power control circuit, and power control circuit connects power circuit and control module;
Step 2, carry out the data destroying process:
1), in normal operation, the power supply power supply is normal, the circuit operate as normal; Storage transmission between control module control external data and the storage unit, the power supply power circuit detects whether input state of power supply simultaneously, when the normal power supply state of power supply input is arranged; Control circuit control charge-discharge circuit is to battery charge; This moment, if normal power supply when needing data destroying, can be carried out the normal power supply data destroying;
2), sudden power need be destroyed data or carried out data destroying and when being de-energized suddenly; Power control circuit detects external power source and is cut off; This moment, power control circuit was controlled charge-discharge circuit to battery discharge, and the SSD mainboard is supplied power guarantees that it still can work on to carry out data destroying;
3), after data are destroyed fully, control module notice power control circuit powered-down.
Claims (4)
1. the method for the anti-irreversible self-destruction of power down of a solid state hard disc is characterized in that its concrete performing step comprises:
Step 1; Design a SSD motherboard circuit, comprise control module, storage unit, the power circuit of realizing memory function in this SSD motherboard circuit, control module connects storage unit; In circuit, increase power control circuit, battery charging and discharging circuit and battery; Battery connects the battery charging and discharging circuit, and the battery charging and discharging circuit also is connected with control module, power circuit and power control circuit, and power control circuit connects power circuit and control module;
Step 2, carry out the data destroying process:
1), in normal operation, the power supply power supply is normal, the circuit operate as normal; Storage transmission between control module control external data and the storage unit, the power supply power circuit detects whether input state of power supply simultaneously, when the normal power supply state of power supply input is arranged; Control circuit control charge-discharge circuit is to battery charge; This moment, if normal power supply when needing data destroying, can be carried out the normal power supply data destroying;
2), sudden power need be destroyed data or carried out data destroying and when being de-energized suddenly; Power control circuit detects external power source and is cut off; This moment, power control circuit was controlled charge-discharge circuit to battery discharge, and the SSD mainboard is supplied power guarantees that it still can work on to carry out data destroying;
3), after data are destroyed fully, control module notice power control circuit powered-down.
2. the method for the anti-irreversible self-destruction of power down of a kind of solid state hard disc according to claim 1 is characterized in that said control module is meant the SSD controller.
3. the method for the anti-irreversible self-destruction of power down of a kind of solid state hard disc according to claim 1 is characterized in that said power control circuit is meant power-supply controller of electric.
4. the method for the anti-irreversible self-destruction of power down of a kind of solid state hard disc according to claim 1 is characterized in that said storage unit is meant NAND Flash internal memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100756664A CN102662804A (en) | 2012-03-21 | 2012-03-21 | Power-down-prevention irreversible self-destroying method for solid state disk |
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| CN2012100756664A CN102662804A (en) | 2012-03-21 | 2012-03-21 | Power-down-prevention irreversible self-destroying method for solid state disk |
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| CN102662804A true CN102662804A (en) | 2012-09-12 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103116558A (en) * | 2012-12-07 | 2013-05-22 | 大连奥林匹克电子城咨信商行 | Data destruction method |
| CN105743640A (en) * | 2016-01-22 | 2016-07-06 | 广州御银科技股份有限公司 | Key protection module |
| CN105809069A (en) * | 2015-01-21 | 2016-07-27 | 联想（新加坡）私人有限公司 | Device and method for prevention of removal of solid state drive being accessible, and solid state drive |
| CN105825151A (en) * | 2016-04-11 | 2016-08-03 | 浪潮集团有限公司 | Method for remotely controlling self destruction of solid-state disk |
| CN106295419A (en) * | 2016-08-26 | 2017-01-04 | 天津市英贝特航天科技有限公司 | A kind of method for designing of the quick irreversible self-destruction of solid state hard disc |
| CN108537069A (en) * | 2018-01-17 | 2018-09-14 | 中北大学 | Store tester data self-destruction method |
| CN110347233A (en) * | 2019-06-27 | 2019-10-18 | 鸿秦（北京）科技有限公司 | A kind of solid state hard disk with power down protection and physical destroying function |
| CN110909395A (en) * | 2018-09-14 | 2020-03-24 | 武汉海康存储技术有限公司 | Method and device for destroying data of nonvolatile storage device |
| CN112783561A (en) * | 2021-01-06 | 2021-05-11 | 素泰智能科技(上海)有限公司 | Key destroying method for wearable equipment |
| CN113312680A (en) * | 2021-05-28 | 2021-08-27 | 福州优联利众电子商务有限公司 | Hard disk for multi-channel remote control disconnection or complete data destruction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103116558A (en) * | 2012-12-07 | 2013-05-22 | 大连奥林匹克电子城咨信商行 | Data destruction method |
| CN105809069A (en) * | 2015-01-21 | 2016-07-27 | 联想（新加坡）私人有限公司 | Device and method for prevention of removal of solid state drive being accessible, and solid state drive |
| CN105743640A (en) * | 2016-01-22 | 2016-07-06 | 广州御银科技股份有限公司 | Key protection module |
| CN105825151A (en) * | 2016-04-11 | 2016-08-03 | 浪潮集团有限公司 | Method for remotely controlling self destruction of solid-state disk |
| CN106295419A (en) * | 2016-08-26 | 2017-01-04 | 天津市英贝特航天科技有限公司 | A kind of method for designing of the quick irreversible self-destruction of solid state hard disc |
| CN108537069B (en) * | 2018-01-17 | 2021-07-06 | 中北大学 | Self-destruction method for data of storage tester |
| CN108537069A (en) * | 2018-01-17 | 2018-09-14 | 中北大学 | Store tester data self-destruction method |
| CN110909395A (en) * | 2018-09-14 | 2020-03-24 | 武汉海康存储技术有限公司 | Method and device for destroying data of nonvolatile storage device |
| CN110909395B (en) * | 2018-09-14 | 2022-02-08 | 杭州海康存储科技有限公司 | Method and device for destroying data of nonvolatile storage device |
| CN110347233A (en) * | 2019-06-27 | 2019-10-18 | 鸿秦（北京）科技有限公司 | A kind of solid state hard disk with power down protection and physical destroying function |
| CN112783561A (en) * | 2021-01-06 | 2021-05-11 | 素泰智能科技(上海)有限公司 | Key destroying method for wearable equipment |
| CN113312680A (en) * | 2021-05-28 | 2021-08-27 | 福州优联利众电子商务有限公司 | Hard disk for multi-channel remote control disconnection or complete data destruction |
| CN113312680B (en) * | 2021-05-28 | 2024-04-09 | 福州优联利众电子商务有限公司 | Hard disk capable of remotely controlling disconnection or thorough destruction of data through multiple channels |
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Application publication date: 20120912 |