CN110310104A - A kind of self-distroyable disposable hardware wallet - Google Patents
A kind of self-distroyable disposable hardware wallet Download PDFInfo
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- CN110310104A CN110310104A CN201910493387.1A CN201910493387A CN110310104A CN 110310104 A CN110310104 A CN 110310104A CN 201910493387 A CN201910493387 A CN 201910493387A CN 110310104 A CN110310104 A CN 110310104A
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- 230000015654 memory Effects 0.000 claims abstract description 38
- 238000012544 monitoring process Methods 0.000 claims abstract description 36
- 230000006870 function Effects 0.000 claims abstract description 25
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims description 9
- 238000012790 confirmation Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 238000007726 management method Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/04—Payment circuits
- G06Q20/06—Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme
- G06Q20/065—Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme using e-cash
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/38—Payment protocols; Details thereof
- G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
- G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/38—Payment protocols; Details thereof
- G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
- G06Q20/401—Transaction verification
- G06Q20/4014—Identity check for transactions
- G06Q20/40145—Biometric identity checks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/002—Countermeasures against attacks on cryptographic mechanisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
- H04L9/0897—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage involving additional devices, e.g. trusted platform module [TPM], smartcard or USB
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash
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- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- Strategic Management (AREA)
- Finance (AREA)
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- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Storage Device Security (AREA)
Abstract
The invention discloses a kind of self-distroyable disposable hardware wallets, including power module, control module, safety monitoring module, memory module, security module, application module, communication module, the memory module, security module, application module, communication module are connect with control module respectively, realize hardware wallet function；Safety monitoring module is used to be monitored various types of attacks, and the signal monitored is passed into control module, control module is used to judge whether hardware wallet is under attack according to the signal that safety monitoring module monitors, using the ram that does not power off as memory, if after confirming that the hardware wallet is under attack, the control module is used to control the power supply that memory power-off control module disconnects ram, controls ram power down, key information, account information in auto-erasing ram.Which raises the safeties of existing hardware wallet, reliability.
Description
Technical field
The present invention relates to digital cash fields, and in particular to a kind of self-distroyable disposable hardware wallet.
Background technique
Digital cash is a kind of sabstitute money of electronic form, such as currently popular bit coin, Lay spy coin and PPCoin
Deng.These digital cash depend on cryptographic technique and calibration technology, and the holder of every currency needs to save at least a pair of of private key
And public key, here it is the proofs of individual digital assets.Private key has been grasped, has been equivalent to have grasped the bank account of a people, one
Private key thievery occurs for denier, is also just lost tous les biens corresponding to private key.In digital cash field, the importance of private key
It is self-evident.
Hardware wallet is a container for saving private key, by private key refrigeration in local, externally provides the signature that private key generates,
To effectively prevent private key exposure in a network environment, prevent from being stolen.Correspondingly, for local hardware wallet is stored in
Corresponding safeguard procedures are needed, to prevent private key to be stolen from local.Hardware wallet generally uses ram as storage private key
Container, this there is a kind of risk, i.e., private key may directly read the content in memory by tearing machine open and obtain, that is, private key
It is stolen from local.In addition, in variation special in face of external environment, such as under the variation such as voltage, temperature, frequency, hardware
Wallet is possible to disturbed or memory is distorted, to cause safety problem.Currently, common hardware wallet has on the market:
Ledger, Trezor, keepKey, library mind etc., these hardware wallets do not have tamper self-destroying function, can not prevent hardware money
Private key in packet is locally stolen.Therefore, it is necessary to for hardware wallet local security protection studied and hardware wallet compel
It is essential and one of asks.
Presently, the main of hardware wallet uses crowd based on professional person, therefore, in the sheet of design hardware wallet
When ground security protection, the attacker faced is likely to be with technical expertise abundant, can obtain advanced analysis
Tool can be carried out deep analysis and attack.And tool of the hardware wallet as financial transaction, need higher reliability with
Safety.Therefore, under such attack, it is desirable that hardware wallet Security mechanism with higher, in safety
It needs to be related to various protection in monitoring.
Summary of the invention
The purpose of the present invention is being directed to the corresponding deficiency of the prior art, a kind of self-distroyable disposable hardware wallet is provided, is improved existing
Have safety, the reliability of hardware wallet, once hardware wallet by external attack, then such as by the sensitive information in hardware wallet
The information erasings such as key information, account information prevent from causing more serious safety problem.
The purpose of the present invention is what is realized using following proposal: the invention discloses a kind of self-distroyable disposable hardware wallets, including
Power module, control module, safety monitoring module, memory module, security module, application module, communication module, the power supply mould
Block for give entire hardware wallet power supply, the memory module, security module, application module, communication module respectively with control mould
Block connection, realizes hardware wallet function；The safety monitoring module is connect with control module, the safety monitoring module for pair
Various types of attacks are monitored, and the signal monitored is passed to control module, and the control module is used for according to peace
The signal that full monitoring module monitors arrive judges whether hardware wallet is under attack, for using the ram not powered off to deposit as private key
The hardware wallet of reservoir, if after confirming that the hardware wallet is under attack, the control module is for controlling memory power-off control
Module disconnects the power supply of ram, controls ram power down, the sensitive information in auto-erasing ram.The sensitive information includes close
Key information, account information are exactly key, account password in fact.Sensitive information in hardware wallet is maintained in ram, is such as used
The private key information etc. at family.Normal condition, ram are that have reserce cell in succession always, are powered to ram.
The safety monitoring module includes tamper thimble, and tamper thimble is by the shell of hardware wallet by the electricity on circuit board
Pressure, clock signal winding connection, variation of the control module for monitoring voltage or/and clock frequency；When shell be destroyed or by
After dismantling, tamper thimble is triggered, original complete loopback path is destroyed, and makes voltage that jump or/and clock signal generation occur
Variation, then unsafe incidents have occurred in control module judgement, and control module controls memory according to the triggering of unsafe incidents
Power-off control module disconnects the power supply of ram, controls ram power down, the sensitive information in auto-erasing ram.
The safety monitoring module includes the temperature detecting module for monitoring hardware wallet temperature, the temperature detection mould
Block is connect with control module, and the temperature detecting module is used to the temperature signal of real-time detection passing to control module, described
Control module is used for the temperature signal according to detection, judges whether temperature jumps, if temperature jumps, triggers control
Molding block controls the power supply that memory power-off control module disconnects ram, controls ram power down, the sensitivity in auto-erasing ram
Information.
Control module, communication module, application module, security module are integrated in MCU module.
The communication module includes coding/decoding module, communication protocol module, message distribution module；The application module includes
Account management module, account recovery module, equipment authentication module, trade confirmation module；The security module includes that key generates
Module, hash function module, signature function module, encryption and decryption function module；The memory module includes cipher key storage block, account
Family backup module, facility information memory module.
The MCU module is integrated with USB interface, communicates to connect for establishing with mobile phone, and installation transaction APP, is used on mobile phone
In in the enterprising line number word moneytary operations of mobile phone.
Self-distroyable disposable hardware wallet of the invention further includes one or more of fingerprint module, key module, display module,
The fingerprint module is connect with control module, and the key module is connect with control module, the display module and control module
Connection.Display module uses OLED module.
Self-distroyable disposable hardware wallet of the invention further includes alarm module, and the alarm module is connect with control module, described
Control module carries out abnormal alarm prompt for controlling alarm module.
Present invention has the advantage that the present invention is protected for hardware wallet memory module, when hardware wallet by
When external attack, such as physically tears machine open and uncap, using the variation of voltage, temperature, frequency distort storage content in the environment
Etc. diversified forms attack, will affect the normal operating of hardware wallet, bring danger to financial transaction process.Therefore, of the invention
Safety monitoring module and memory power-off control module are added, after safety monitoring module detects that unsafe incidents occur, is led to
The power supply that memory power-off control module disconnects ram is crossed, ram power down, the sensitive information in auto-erasing ram, example are controlled
Such as key information, account information etc., to protect the safety of hardware wallet key.Pass through self-destructed mode, it is therefore prevented that hardware money
Packet is read memory content after violence is dismantled and leads to private key exposure or attack by external environment so that hardware wallet
The result that content is tampered.Through the above scheme, can effectively meet the needs of hardware wallet local security protection.
The invention patent is compared with existing hardware wallet, and related monitoring range is wider in terms of safety monitoring, can supervise
Different types of attack is measured, thus improves the safety of system.Tool of the hardware wallet as financial transaction, to safety
Property, the requirement of reliability it is higher than common product, the invention patent be exactly triggered from the characteristic of hardware wallet and use environment, if
The tamper self-destroying function for having counted hardware wallet, improves the safety of existing hardware wallet.
Detailed description of the invention
Fig. 1 is the module connection figure of the embodiment of self-distroyable disposable hardware wallet of the invention；
Fig. 2 is the safety monitoring schematic diagram of self-distroyable disposable hardware wallet of the invention.
Specific embodiment
Embodiment one
Referring to Fig. 1 and Fig. 2, present embodiment discloses a kind of self-distroyable disposable hardware wallet, including battery module, control module,
Safety monitoring module, memory power-off control module, memory module, security module, application module, communication module, the battery
Module for give entire hardware wallet power supply, the memory module, security module, application module, communication module respectively with control
Module connection, realizes hardware wallet function；The safety monitoring module, memory power-off control module connect with control module respectively
It connects, the safety monitoring module is used to be monitored various types of attacks, and the signal monitored is passed to control mould
Block, the control module are used for according to the signal that safety monitoring module monitors judging whether hardware wallet is under attack, for
Use the ram not powered off as the hardware wallet of private key store, if after confirming that the hardware wallet is under attack, the control mould
Block is used to control the power supply that memory power-off control module disconnects ram, controls ram power down, the sensitivity in auto-erasing ram
Information, the sensitive information include key information, account information.
The safety monitoring module includes tamper thimble, and tamper thimble is by the shell of hardware wallet by the electricity on circuit board
Pressure, clock signal winding connection, variation of the control module for monitoring voltage or/and clock frequency；When shell be destroyed or by
After dismantling, tamper thimble is triggered, original complete loopback path is destroyed, and makes voltage that jump or/and clock signal generation occur
Variation, then unsafe incidents have occurred in control module judgement, and control module controls memory according to the triggering of unsafe incidents
Power-off control module disconnects the power supply of ram, controls ram power down, the sensitive information in auto-erasing ram.
The safety monitoring module includes the temperature detecting module for monitoring hardware wallet temperature, the temperature detection mould
Block is connect with control module, and the temperature detecting module is used to the temperature signal of real-time detection passing to control module, described
Control module is used for the temperature signal according to detection, judges whether temperature jumps, if temperature jumps, triggers control
Molding block controls the power supply that memory power-off control module disconnects ram, controls ram power down, the sensitivity in auto-erasing ram
Information.
Control module, communication module, application module, security module are integrated in MCU module.By driving mould built in MCU
Block drives respective modules, realizes the hardware wallet function.Private key is stored in local by the hardware wallet, passes through local computing
Generate signature for trading, externally only transmission signature, thus come prevent private key exposure stolen in a network environment by hacker.
The equipment that the communication module mainly solves between hardware wallet and host computer communicates, communication protocol, encoding and decoding with
And communication security protection.The module includes coding/decoding module, communication protocol module, message distribution module.The coding/decoding module,
Realize cross-platform data exchange.The hardware wallet is connect by USB interface with host computer, will by coding/decoding module
Data pass to cell phone application end from embedded device, realize cross-platform data interaction.The communication protocol module is formulated
The communication protocol of hardware wallet and host computer data interaction；The message distribution module is routed by message and arrives message distribution
It is handled in modules.
The security module provides the related function in relation to access control, key agreement and Password Operations in hardware wallet
Energy.The module includes key production module, hash function module, signature function module, encryption and decryption function module.The key is raw
Randomizer function is mainly realized at module, is the main modular that hardware wallet generates account.The hash function module
Mainly solve the relevant cryptography computing function of hardware wallet.The signature function module is for generating trading signature function.Institute
Stating encryption/decryption module realizes the encryption and decryption functions of data storage, data transmission, ensures the safety of data.
The memory module saves the key message in hardware wallet, including cipher key storage block, account backup module,
Facility information memory module.The cipher key storage block stores the main information of hardware wallet, i.e. account key；The account
Backup module carries out account backup for user, prevents the case where losing other than data；The facility information memory module is deposited
Equipment setting information related to user etc. is stored up.
The application module is hardware wallet user oriented application layer program, including account management module, account restore mould
Block, equipment authentication module, trade confirmation module.The account management, account recovery module realize the basic account of hardware wallet
Family function；The equipment authentication module realizes the equipment identifying procedure in hardware wallet and host computer process of exchange；The friendship
Easy confirmation module is the core difference of hardware wallet and software wallet, which completes the confirmation of transaction offline, thus ensure
Key information is constantly in local off-line device, improves safety.
The MCU module is integrated with USB interface, and the integrated USB interface of the MCU module can be used to establish with mobile phone logical
Letter connection, installs relevant transaction APP, user can be in the enterprising line number word moneytary operations of mobile phone on user mobile phone.
The drive module includes OLED drive module, storage drive module, USB drive module, fingerprint drive module.
Embodiment two
Self-distroyable disposable hardware wallet of the invention further includes alarm module, and the alarm module is connect with control module, described
Control module carries out abnormal alarm prompt for controlling alarm module.The other technical characteristics of the present embodiment and one phase of embodiment
Together.
The invention patent mainly protects memory module, after tearing machine event open such as hardware wallet, the invention patent
Hardware wallet then avoids the generation of this problem by tearing the self-destructed technical solution of machine open, i.e. trigger control module control memory is disconnected
Electric control module disconnects the power supply of ram, ram power down, the encrypted content in auto-erasing ram.
The operation principle of the present invention is that: tamper thimble, tamper thimble are installed between the circuit board and shell of hardware wallet
By shell by the signals winding connection such as voltage, clock on circuit board, the variation of MCU monitoring voltage, clock frequency；Work as shell
After being destroyed or being opened, tamper thimble is triggered, original complete loopback path is destroyed, and jump, clock letter occur for voltage
It number changes, is then judged as and unsafe incidents have occurred, trigger reservoir safety protecting mechanism.And control module can also monitor
The temperature of hardware wallet, when temperature occur jump (as use high temperature shell when), then be judged as and unsafe incidents have occurred,
Trigger reservoir safety protecting mechanism.The temperature-monitoring function that the present embodiment can be carried by MCU.It is not powered off to using
Hardware wallet of the ram as private key store is then disconnected reserce cell after unsafe incidents occur for confirmation by monitoring,
Auto-erasing is realized in ram power down.Sensitive information in memory mainly has key information, account information, account and cipher key backup
Information.Sensitive information is stored in ram, and other information can be stored in other memories in such as flash.In ram power down
After realizing auto-erasing, the original program information of hardware wallet is not destroyed.
Present invention incorporates preferred embodiment, two kinds of different schemes are described, but protection scope of the present invention is not limited to
This.Such as safety monitoring module monitoring range can be adjusted with detection means according to practical type, but still fall within the present invention
Protection scope；Such as memory module deletes information and is not limited to key information, account information, carries out overall memory to hardware wallet
It empties and also belongs to the scope of the present invention；Those skilled in the art, which should be understood that, is not departing from the appended claims institute
In the spirit and scope of the present invention of restriction, the present invention can be made a variety of changes in the form and details, be this hair
Bright protection scope.
Claims (8)
1. a kind of self-distroyable disposable hardware wallet, it is characterised in that: including power module, control module, safety monitoring module, storage mould
Block, security module, application module, communication module, the power module are used to power to entire hardware wallet, the storage mould
Block, security module, application module, communication module are connect with control module respectively, realize hardware wallet function；The safety monitoring
Module is connect with control module, and the safety monitoring module is used to be monitored various types of attacks, and will monitor
Signal passes to control module, and the control module is used to judge that hardware wallet is according to the signal that safety monitoring module monitors
No under attack, for using hardware wallet of the ram not powered off as private key store, if confirming, the hardware wallet is attacked
After hitting, the control module is used to control the power supply that memory power-off control module disconnects ram, controls ram power down, automatically
The sensitive information in ram is wiped, the sensitive information includes key information, account information.
2. self-distroyable disposable hardware wallet according to claim 1, it is characterised in that: the safety monitoring module includes tamper top
Needle, tamper thimble is by the shell of hardware wallet by the voltage on circuit board, clock signal winding connection, and control module is for supervising
Survey the variation of voltage or/and clock frequency；After shell is destroyed or is opened, tamper thimble, original complete winding are triggered
Path is destroyed, and voltage generation jump or/and clock signal is made to change, then dangerous thing has occurred in control module judgement
Part, and control module disconnects the power supply of ram, control according to the triggering control memory power-off control module of unsafe incidents
Ram power down, the sensitive information in auto-erasing ram.
3. self-distroyable disposable hardware wallet according to claim 1, it is characterised in that: the safety monitoring module includes for supervising
The temperature detecting module of hardware wallet temperature is surveyed, the temperature detecting module is connect with control module, the temperature detecting module
For the temperature signal of real-time detection to be passed to control module, the control module is used for the temperature signal according to detection, sentences
Whether disconnected temperature jumps, if temperature jumps, trigger control module controls memory power-off control module and disconnects
The power supply of ram controls ram power down, the sensitive information in auto-erasing ram.
4. self-distroyable disposable hardware wallet according to claim 1, it is characterised in that: control module, communication module, using mould
Block, security module are integrated in MCU module.
5. self-distroyable disposable hardware wallet according to claim 1 or 4, it is characterised in that: the communication module includes encoding and decoding
Module, communication protocol module, message distribution module；The application module includes account management module, account recovery module, equipment
Authentication module, trade confirmation module；The security module include key production module, hash function module, signature function module,
Encryption and decryption function module；The memory module includes cipher key storage block, account backup module, facility information memory module.
6. self-distroyable disposable hardware wallet according to claim 4, it is characterised in that: the MCU module is integrated with USB interface,
It is communicated to connect for being established with mobile phone, installation transaction APP on mobile phone, in the enterprising line number word moneytary operations of mobile phone.
7. self-distroyable disposable hardware wallet according to claim 1, it is characterised in that: further include fingerprint module, key module, show
Show one or more of module, the fingerprint module is connect with control module, and the key module is connect with control module, institute
Display module is stated to connect with control module.
8. self-distroyable disposable hardware wallet according to claim 1, it is characterised in that: it further include alarm module, the alarm mould
Block is connect with control module, and the control module carries out abnormal alarm prompt for controlling alarm module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910493387.1A CN110310104B (en) | 2019-06-06 | 2019-06-06 | Self-destruction type hardware wallet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910493387.1A CN110310104B (en) | 2019-06-06 | 2019-06-06 | Self-destruction type hardware wallet |
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| CN110310104A true CN110310104A (en) | 2019-10-08 |
| CN110310104B CN110310104B (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910493387.1A Active CN110310104B (en) | 2019-06-06 | 2019-06-06 | Self-destruction type hardware wallet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113255017A (en) * | 2021-05-28 | 2021-08-13 | 湖南胜云光电科技有限公司 | Self-destruction protection device and computer |
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