CN108985110A - A kind of method and apparatus that concerning security matters carrier information is quickly destroyed - Google Patents
A kind of method and apparatus that concerning security matters carrier information is quickly destroyed Download PDFInfo
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- CN108985110A CN108985110A CN201811009744.4A CN201811009744A CN108985110A CN 108985110 A CN108985110 A CN 108985110A CN 201811009744 A CN201811009744 A CN 201811009744A CN 108985110 A CN108985110 A CN 108985110A
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- 238000006243 chemical reaction Methods 0.000 claims description 20
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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
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Abstract
A kind of method and apparatus that concerning security matters carrier information is quickly destroyed of the present invention belong to storage-medium information and destroy technical field；The technical issues of solution, is: providing a kind of method and apparatus that can in time, quickly, thoroughly destroy USB flash disk and IC card classified information；The technical solution adopted is that: a kind of method that concerning security matters carrier information is quickly destroyed, the following steps are included: whether system detection has the insertion of concerning security matters carrier, system inputs high-voltage DC power supply to concerning security matters carrier using PWM control mode, destroy the data in storage chip, whether the high-voltage DC power supply voltage of system detection output drops to predetermined pressure drop numerical value, and whether system-computed discharge time n and discharge cycle t reach predetermined value；The present invention is suitable for information security field.
Description
Technical field
A kind of method and apparatus that concerning security matters carrier information is quickly destroyed of the present invention belong to concerning security matters carrier information destruction technology neck
Domain, in particular to a kind of method and apparatus that can quickly destroy concerning security matters carrier inside information.
Background technique
With the arrival of information age, mobile concerning security matters carrier is due to having the characteristics that using flexible, easy to carry, as relating to
Close carrier in message area rapid proliferation and extensive use, become in people's routine work the transmission of indispensable information and
Data exchange tool.More and more sensitive informations, secret data and archives material are stored in the mobile storage such as USB flash disk, IC card
In medium, the following concerning security matters carrier information safety problem, which has become, pays close attention to item.
For a long time, when being operated to confidential U-disk, IC card, password is installed additional using mobile concerning security matters carrier management system, is formulated all
As disabling, read-only, authorization tactical management prevent data to be leaked by USB flash disk, IC card, relating to protect data
Close USB flash disk, IC card do data erasing processing when abandoning, prevent data to be leaked, still, aforesaid way can not be completely secured and deposit
Store up the complete destruction of the information in USB flash disk, IC card；It is especially to be unable to satisfy quickly to destroy concerning security matters there is special emergency
The requirement of carrier information has certain security risk.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, the technical problem to be solved is that: a kind of concerning security matters carrier is provided
The method and apparatus that information is quickly destroyed realize that classified information is timely, quick, thorough in usually and in emergency circumstances USB flash disk and IC card
It destroys at bottom.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of concerning security matters carrier information is quickly destroyed
Method, comprising the following steps:
Step 1: whether system detection has the insertion of concerning security matters carrier, if so, then entering second step；
Step 2: system inputs high-voltage DC power supply to concerning security matters carrier using PWM control mode, impacted by high-voltage DC power supply
Concerning security matters carrier inside flash chip implements pulse current, the data in storage chip is destroyed, subsequently into third step；
Step 3: whether the high-voltage DC power supply voltage of system detection output drops to predetermined pressure drop numerical value, if dropping to pre- level pressure
Numerical value is dropped, then high-voltage DC power supply is inputted to concerning security matters carrier using PWM control mode again, while recording discharge time n and putting
Electric period t, subsequently into the 4th step；
Step 4: whether system-computed discharge time n and discharge cycle t reach predetermined value, if not reaching predetermined value, return
Return third step；If reaching predetermined value, system stalls complete the destruction to concerning security matters carrier inside information.
The concerning security matters carrier includes USB flash disk and IC card.
The system output high-voltage DC power supply is 48V power supply, and the predetermined pressure drop numerical value is 6.6V.
A kind of device that concerning security matters carrier information is quickly destroyed, comprising: power module, main control chip module, DC/DC boosting mould
Block, sample circuit module and USB；
The power output end of above-mentioned power module is defeated with the power supply of the power end of main control chip module and DC/DC boost module respectively
Enter end to be electrically connected, the PWM control terminal phase of the pwm control signal output end and DC/DC boost module of the main control chip module
Even, the output head anode of the DC/DC boost module respectively with the signal input part of sample circuit module and the USB ports D+
It is electrically connected, the signal output end of the sample circuit module is connected with the signal input part of main control chip module.
Described device further includes having IC card seat；The cathode power supply end of the IC card seat is defeated with above-mentioned DC/DC boost module
Outlet anode is electrically connected.
The main control chip module is also connected with clock circuit module and resets control module.
The power module includes: battery module and DC/DC power module, the power supply output of the battery module
End is connected with the power input of DC/DC power module；The power end of above-mentioned DC/DC boost module and the power supply of battery module
Output end is connected, and the power output end of the power end and DC/DC power module of above-mentioned main control chip module is electrically connected；
The power module further includes having charger module, the power output end of the charger module and the electricity of battery module
Source input terminal is electrically connected.
The circuit structure of the DC/DC boost module are as follows: the control terminal cathode series resistance R2 of DC solid-state relay U2
It is connected afterwards with chip power anode VCC, the just extremely PWM control of DC/DC boost module of the control terminal of DC solid-state relay U2
End, the control terminal cathode ground connection of DC solid-state relay U2；
The output head anode of the DC solid-state relay U2 is connected with the power input anode of DC/DC boost module；Direct current
The negative pole of output end of solid-state relay U2 is connected with the input anode of DC/DC boost chip U3, and DC/DC boost chip U3's is defeated
Enter to hold cathode to be connected with the power input cathode of DC/DC boost module；The output head anode of the DC/DC boost chip U3 is
The signal output end anode of DC/DC boost module, the negative pole of output end ground connection of DC/DC boost chip U3；
The circuit structure of the sample circuit module are as follows: after the anode of the vdd terminal shunt-wound capacitance C5 of A/D conversion module U4 with chip
Positive pole VCC is connected, the cathode ground connection of the capacitor C5, the end AIN of the A/D conversion module U4 and one end of connecting resistance R3
It is connected afterwards with one end of variable resistance RP1, the other end of the resistance R3 is the signal input part of sample circuit module；
It is grounded after the other end series resistor R4 of the variable resistance RP1；The end SHDN of the A/D conversion module U4 and chip electricity
Source anode VCC is connected, and is grounded after the end the VREF serial capacitance C6 of the A/D conversion module U4；The A/D conversion module U4's
The end SCLK, the end CS and the end DOUT are connected with the port I/O of main control chip module respectively, the ground terminal of the A/D conversion module U4
Ground connection.
The circuit structure of the clock circuit module are as follows: behind one end of one end shunt-wound capacitance C3 of crystal oscillator chip Y1 with master control
The end XTAL1 of chip module is connected, behind one end of the other end shunt-wound capacitance C4 of the crystal oscillator chip Y1 with main control chip module
The end XTAL2 be connected, be grounded after the other end of the other end shunt-wound capacitance C4 of the capacitor C3；The electricity for resetting control module
Line structure are as follows: behind one end of the anode of one end shunt-wound capacitance C1 of reset button S1, one end of capacitor C2 and resistance R1 with master control
The end RST of chip module is connected, after the cathode of other end shunt-wound capacitance C1 and the other end of capacitor C2 of the reset button S1
Ground connection, the other end of the resistance R1 are connected with chip power anode VCC.
The main control chip module uses C8051 series monolithic chip.
Compared with the prior art, the invention has the beneficial effects that:
One, for the present invention by applying high direct voltage to the concerning security matters carrier such as USB flash disk and IC card, the method by high voltage, high current is real
Existing storage chip permanent damages, thoroughly burn storage unit, confidential data are effectively prevent to reveal, make up the deficiency of physical damage,
It ensures information safety；
Two, the present invention applies high direct voltage to concerning security matters carrier by PWM control mode, and carries out time and number to discharge process
Calculate, by the variation of PWM cycle can accurate judgement concerning security matters carrier burn observations, guarantee thoroughly to destroy storage unit, prevent
Leaking data；
Three, the present invention will output high-voltage DC power supply respectively with the USB ports data/address bus D+ and the VCC power end of IC card seat
Be connected, can guarantee it is quick, directly by action of high voltage in internal memory chip, can quick destroying information, can adapt to
The USB flash disk and IC card of various models, entire circuit structure is succinct, practical.
Detailed description of the invention
The present invention will be further described in detail with reference to the accompanying drawing:
Fig. 1 is electrical block diagram of the invention；
Fig. 2 is the chip circuit figure of main control chip module in the present invention；
Fig. 3 is the circuit diagram of DC/DC boost module in the present invention；
Fig. 4 is the circuit diagram of sample circuit module in the present invention；
Fig. 5 is the circuit diagram of clock circuit module in the present invention；
Fig. 6 is the circuit diagram that control module is resetted in the present invention；
Fig. 7 is USB flash disk internal circuit schematic diagram when the invention works；
In figure: 1 being power module, 2 be main control chip module, 3 be DC/DC boost module, 4 be sample circuit module, 5 be USB
Seat, 6 be IC card seat, 7 be clock circuit module, 8 be reset control module, 9 be battery module, 10 be DC/DC power module,
11 be charger module.
Specific embodiment
A kind of method that concerning security matters carrier information is quickly destroyed, comprising the following steps:
Step 1: whether system detection has the insertion of concerning security matters carrier, if so, then entering second step；
Step 2: system inputs high-voltage DC power supply to concerning security matters carrier using PWM control mode, impacted by high-voltage DC power supply
Concerning security matters carrier inside storage chip implements pulse current, the data in storage chip is destroyed, subsequently into third step；
Step 3: whether the high-voltage DC power supply voltage of system detection output drops to predetermined pressure drop numerical value, if dropping to pre- level pressure
Numerical value is dropped, then high-voltage DC power supply is inputted to concerning security matters carrier using PWM control mode again, while recording discharge time n and putting
Electric period t, subsequently into the 4th step；
Step 4: whether system-computed discharge time n and discharge cycle t reach predetermined value, if not reaching predetermined value, return
Return third step；If reaching predetermined value, system stalls complete the destruction to storage medium internal information.
The concerning security matters carrier includes USB flash disk and IC card, will export the end data/address bus D+ of high-voltage DC power supply with USB respectively
Mouth is connected with the VCC power end of IC card seat, being capable of quick destroying information directly by action of high voltage in internal memory chip.
The system output high-voltage DC power supply is 48V power supply, and the predetermined pressure drop numerical value is 6.6V.
As shown in Figure 1, a kind of device that concerning security matters carrier information is quickly destroyed, comprising: power module 1, main control chip module
2, DC/DC boost module 3, sample circuit module 4 and USB seat 5；
The power output end of the power module 1 electricity with the power end of main control chip module 2 and DC/DC boost module 3 respectively
Source input terminal is electrically connected, and the pwm control signal output end of the main control chip module 2 and the PWM of DC/DC boost module 3 are controlled
End processed be connected, the output head anode of the DC/DC boost module 3 respectively with the signal input part of sample circuit module 4 and USB
5 D+ port electrical is connected, the signal output end and the signal input part phase of main control chip module 2 of the sample circuit module 4
Even.
Described device further includes having IC card seat 6；The cathode power supply end of the IC card seat 6 and above-mentioned DC/DC boost module 3
Output head anode is electrically connected.
The main control chip module 2 is also connected with clock circuit module 7 and resets control module 8.
The power module 1 includes: battery module 9 and DC/DC power module 10, the electricity of the battery module 9
Source output terminal is connected with the power input of DC/DC power module 10；The power end and battery pack of above-mentioned DC/DC boost module 3
The power output end of module 9 is connected, the power end of above-mentioned main control chip module 2 and the power output end of DC/DC power module 10
It is electrically connected；
The power module 1 further includes having charger module 11, the power output end and battery pack mould of the charger module 11
The power input of block 9 is electrically connected.
Above-mentioned battery module 9 uses chargeable DC22.2V Li-ion batteries piles, and above-mentioned charger module 11 is using vehicle-mounted
Perhaps 220V line charger can charge to it by vehicle-mounted DC28V power supply or AC220V alternating current charger, conveniently take
Band is easy to use.
As shown in Fig. 2, the main control chip module 2 uses C8051 series monolithic chip U1, highly integrated small package
C8051F series monolithic by optimization, be specifically applied to limited space, low-power consumption, low cost application in, by means of economy
Debugging function in efficient and professional developing instrument and system, exploitation become quick and easy.
As shown in figure 3, the circuit structure of the DC/DC boost module 3 are as follows: the control terminal anode of DC solid-state relay U2
It is connected after series resistor R2 with chip power anode VCC, the control terminal of DC solid-state relay U2 just extremely DC/DC boost module
3 PWM control terminal, the control terminal cathode ground connection of DC solid-state relay U2；
The output head anode of the DC solid-state relay U2 is connected with the power input anode of DC/DC boost module 3；Direct current
The negative pole of output end of solid-state relay U2 is connected with the input anode of DC/DC boost chip U3, and DC/DC boost chip U3's is defeated
Enter to hold cathode to be connected with the power input cathode of DC/DC boost module 3；The output head anode of the DC/DC boost chip U3
For the signal output end anode of DC/DC boost module 3, the negative pole of output end ground connection of DC/DC boost chip U3.
As shown in figure 4, the circuit structure of the sample circuit module 4 are as follows: the vdd terminal shunt-wound capacitance of A/D conversion module U4
It is connected after the anode of C5 with chip power anode VCC, the cathode ground connection of the capacitor C5, the end AIN of the A/D conversion module U4
And be connected behind one end of connecting resistance R3 with one end of variable resistance RP1, the other end of the resistance R3 is sample circuit module 4
Signal input part；
It is grounded after the other end series resistor R4 of the variable resistance RP1；The end SHDN of the A/D conversion module U4 and chip electricity
Source anode VCC is connected, and is grounded after the end the VREF serial capacitance C6 of the A/D conversion module U4；The A/D conversion module U4's
The end SCLK, the end CS and the end DOUT are connected with the port I/O of main control chip module 2 respectively, the ground terminal of the A/D conversion module U4
Ground connection.
As shown in figure 5, the circuit structure of the clock circuit module 7 are as follows: one end shunt-wound capacitance C3's of crystal oscillator chip Y1
Be connected behind one end with the end XTAL1 of main control chip module 2, behind one end of the other end shunt-wound capacitance C4 of the crystal oscillator chip Y1 with
The end XTAL2 of main control chip module 2 is connected, and is grounded after the other end of the other end shunt-wound capacitance C4 of the capacitor C3.
As shown in fig. 6, the circuit structure for resetting control module 8 are as follows: one end shunt-wound capacitance C1's of reset button S1
It is connected behind one end of anode, one end of capacitor C2 and resistance R1 with the end RST of main control chip module 2, the reset button S1's
It is grounded after the cathode of other end shunt-wound capacitance C1 and the other end of capacitor C2, the other end and the chip power anode of the resistance R1
VCC is connected.
As shown in fig. 7, DC/DC power module 10 is powered to main control chip module 2 and peripheral circuit, DC/DC booster circuit
High voltage be output to the end D+ of usb data bus, by the end Vcc of the pull-up resistor inside USB flash disk to USB flash disk system, to flash memory
(FlashROM) chip applies a high-voltage great-current progress rapid damage；The high voltage of same DC/DC booster circuit also exports
Onto the feeder ear Vcc of IC card seat, a big electricity of high pressure is applied to electrically erasable programmable read-only memory (EEPROM) chip
Stream carries out rapid damage.
Above-mentioned DC solid-state relay U2 uses the DC solid-state relay of model DMO063；Above-mentioned DC/DC boosting core
Piece U3 uses the DC/DC boost chip of model CB20-24S48；Above-mentioned A/D conversion chip U4 uses the A/ of model MAX187
D conversion chip.
Above-mentioned workflow is substantially a pressure regulation process, and by the charge and discharge of DC/DC booster circuit end capacitor
It realizes pulse current, closed-loop control is realized by main control chip module 2, after main control chip module 2 receives destruction order, open
Dynamic DC/DC booster circuit starts to carry out capacitor quick charge, and the signal that system detection sample circuit returns reaches high threshold
When disconnect DC/DC booster circuit, capacitor starts the data/address bus and I to USB interface2C serial port feeder ear discharges, and works as electricity
Buckling charges to capacitor then to reclose DC/DC booster circuit after low threshold, so recycles, by main control chip mould
Block 2 implements PWM control, and intelligently terminates USB flash disk, IC card destruction by the variation of PWM cycle.
When system detection to USB flash disk is inserted into quick apparatus for destroying, main control chip module 2 detects sample circuit module 4 and returns
Signal, to DC/DC boost module 3 implement PWM control.After above-mentioned 3 output end of DC/DC boost module rapidly rises to 48V, electricity
Appearance starts slowly to discharge to the data/address bus of USB interface, through 1.5K Ω pull-up resistor inside USB flash disk to the end Vcc, to flash memory core
Piece carries out high-voltage great-current damage；Then restart to carry out capacitor after 3 output end voltage of DC/DC boost module becomes 6.6V
Charging, in cycles, follows the closed-loop control of main control chip module 2, and elongated with PWM cycle, flash chip thoroughly damages,
Main control chip module 2 stops the destruction to USB flash disk according to algorithm.
When system detection to IC card is inserted into quick apparatus for destroying, main control chip module 2 implements DC/DC boost module 3
PWM control, capacitor starts to I after 3 output end of DC/DC boost module rapidly rises to 48V2The feeder ear of C interface carries out slow
Electric discharge carries out high-voltage great-current damage to the eeprom chip in IC card；When 3 output end voltage of DC/DC boost module becomes
Then restart to charge to capacitor after 6.6V, in cycles, the closed-loop control of main control chip module 2 is followed, with PWM weeks
Phase it is elongated, eeprom chip thoroughly damages, and main control chip module 2 stops destruction to IC card according to algorithm.
For the present invention by applying high direct voltage to the concerning security matters carrier such as USB flash disk and IC card, the method by high voltage, high current is real
Existing storage chip permanent damages, thoroughly burn storage unit, confidential data are effectively prevent to reveal, make up the deficiency of physical damage,
It ensures information safety.
The present invention by PWM control mode to concerning security matters carrier apply high direct voltage, and to discharge process carry out the time and time
Number calculates, by the variation of PWM cycle can accurate judgement concerning security matters carrier burn observations, guarantee thoroughly to destroy storage unit, prevent
Only leaking data.
The present invention will export high-voltage DC power supply respectively with the USB ports data/address bus D+ and the VCC power supply of IC card seat
End is connected, can guarantee it is quick, directly by action of high voltage in internal memory chip, can quick destroying information, Neng Goushi
The USB flash disk and IC card of various models are answered, entire circuit structure is succinct, practical.
Claims (10)
1. a kind of method that concerning security matters carrier information is quickly destroyed, it is characterised in that: the following steps are included:
Step 1: whether system detection has the insertion of concerning security matters carrier, if so, then entering second step；
Step 2: system inputs high-voltage DC power supply to concerning security matters carrier using PWM control mode, impacted by high-voltage DC power supply
Concerning security matters carrier inside storage chip implements pulse current, the data in storage chip is destroyed, subsequently into third step；
Step 3: whether the high-voltage DC power supply voltage of system detection output drops to predetermined pressure drop numerical value, if dropping to pre- level pressure
Numerical value is dropped, then high-voltage DC power supply is inputted to concerning security matters carrier using PWM control mode again, while recording discharge time n and putting
Electric period t, subsequently into the 4th step；
Step 4: whether system-computed discharge time n and discharge cycle t reach predetermined value, if not reaching predetermined value, return
Return third step；If reaching predetermined value, system stalls complete the destruction to concerning security matters carrier inside information.
2. a kind of method that concerning security matters carrier information is quickly destroyed according to claim 1, it is characterised in that: the concerning security matters carry
Body includes USB flash disk and IC card.
3. a kind of method that concerning security matters carrier information is quickly destroyed according to claim 1 or 2, it is characterised in that: the system
System output high-voltage DC power supply is 48V power supply, and the predetermined pressure drop numerical value is 6.6V.
4. a kind of device for realizing method as described in claim 1, it is characterised in that: described device include: power module (1),
Main control chip module (2), DC/DC boost module (3), sample circuit module (4) and USB (5)；
The power output end of the power module (1) respectively with the power end and DC/DC boost module of main control chip module (2)
(3) power input is electrically connected, the pwm control signal output end and DC/DC boost module of the main control chip module (2)
(3) PWM control terminal is connected, the output head anode of the DC/DC boost module (3) letter with sample circuit module (4) respectively
Number input terminal is connected with USB (5) D+ port electricals, the signal output end and main control chip of the sample circuit module (4)
The signal input part of module (2) is connected.
5. a kind of device that concerning security matters carrier information is quickly destroyed according to claim 4, it is characterised in that: described device is also
It include IC card seat (6)；The output head anode of the cathode power supply end of the IC card seat (6) and above-mentioned DC/DC boost module (3) electricity
Gas phase connects.
6. a kind of device that concerning security matters carrier information is quickly destroyed according to claim 5, it is characterised in that: the master control core
Piece module (2) is also connected with clock circuit module (7) and resets control module (8).
7. a kind of device that concerning security matters carrier information is quickly destroyed, feature according to claim 4 to 6 any claim
Be: the power module (1) includes: battery module (9) and DC/DC power module (10), the battery module (9)
Power output end be connected with the power input of DC/DC power module (10)；The power end of above-mentioned DC/DC boost module (3)
It is connected with the power output end of battery module (9), the power end and DC/DC power module of above-mentioned main control chip module (2)
(10) power output end is electrically connected；
The power module (1) further includes having charger module (11), the power output end and electricity of the charger module (11)
The power input of pond group module (9) is electrically connected.
8. a kind of device that concerning security matters carrier information is quickly destroyed, feature according to claim 4 to 6 any claim
It is: the circuit structure of the DC/DC boost module (3) are as follows: the control terminal cathode series resistance R2 of DC solid-state relay U2
It is connected afterwards with chip power anode VCC, the just extremely PWM control of DC/DC boost module (3) of the control terminal of DC solid-state relay U2
End processed, the control terminal cathode ground connection of DC solid-state relay U2；
The output head anode of the DC solid-state relay U2 is connected with the power input anode of DC/DC boost module (3)；Directly
The negative pole of output end of stream solid-state relay U2 is connected with the input anode of DC/DC boost chip U3, DC/DC boost chip U3's
Input cathode is connected with the power input cathode of DC/DC boost module (3)；The output end of the DC/DC boost chip U3
Just extremely the signal output end anode of DC/DC boost module (3), the negative pole of output end of DC/DC boost chip U3 are grounded；
The circuit structure of the sample circuit module (4) are as follows: after the anode of the vdd terminal shunt-wound capacitance C5 of A/D conversion module U4 with
Chip power anode VCC is connected, the cathode of capacitor C5 ground connection, the end AIN of the A/D conversion module U4 and connecting resistance R3's
It is connected behind one end with one end of variable resistance RP1, the other end of the resistance R3 is that the signal of sample circuit module (4) inputs
End；
It is grounded after the other end series resistor R4 of the variable resistance RP1；The end SHDN of the A/D conversion module U4 and chip electricity
Source anode VCC is connected, and is grounded after the end the VREF serial capacitance C6 of the A/D conversion module U4；The A/D conversion module U4's
The end SCLK, the end CS and the end DOUT are connected with the port I/O of main control chip module (2) respectively, the ground connection of the A/D conversion module U4
End ground connection.
9. a kind of device that concerning security matters carrier information is quickly destroyed according to claim 6, it is characterised in that: the clock electricity
The circuit structure of road module (7) are as follows: behind one end of one end shunt-wound capacitance C3 of crystal oscillator chip Y1 with main control chip module (2)
The end XTAL1 is connected, the XTAL2 behind one end of the other end shunt-wound capacitance C4 of the crystal oscillator chip Y1 with main control chip module (2)
End is connected, and is grounded after the other end of the other end shunt-wound capacitance C4 of the capacitor C3；The circuit knot for resetting control module (8)
Structure are as follows: behind one end of the anode of one end shunt-wound capacitance C1 of reset button S1, one end of capacitor C2 and resistance R1 with main control chip
The end RST of module (2) is connected, and the cathode of other end shunt-wound capacitance C1 and the other end of capacitor C2 of the reset button S1 is followed by
The other end on ground, the resistance R1 is connected with chip power anode VCC.
10. a kind of device that concerning security matters carrier information is quickly destroyed according to claim 4 to 6 any claim, special
Sign is: the main control chip module (2) uses C8051 series monolithic chip.
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| CN201811009744.4A CN108985110A (en) | 2018-08-31 | 2018-08-31 | A kind of method and apparatus that concerning security matters carrier information is quickly destroyed |
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| CN201811009744.4A CN108985110A (en) | 2018-08-31 | 2018-08-31 | A kind of method and apparatus that concerning security matters carrier information is quickly destroyed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933203A (en) * | 2020-07-14 | 2020-11-13 | 深圳佰维存储科技股份有限公司 | Method, circuit, device, medium and equipment for judging physical destruction of memory chip |
| CN112287303A (en) * | 2020-12-24 | 2021-01-29 | 北京中超伟业信息安全技术股份有限公司 | Destroying equipment suitable for traceable confidential medium |
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