CN110310104A - A kind of self-distroyable disposable hardware wallet - Google Patents

A kind of self-distroyable disposable hardware wallet Download PDF

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Publication number
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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module
hardware wallet
control module
ram
control
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CN201910493387.1A
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CN110310104B (en
Inventor
周严
毛立祥
杜飞飞
雷雨
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Wuhan Zhuomu Technology Co.,Ltd.
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Wuhan Zmvision Technology Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION 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
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/04Payment circuits
    • G06Q20/06Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme
    • G06Q20/065Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme using e-cash
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION 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
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/38Payment protocols; Details thereof
    • G06Q20/382Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3829Payment protocols; Details thereof insuring higher security of transaction involving key management
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION 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
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/38Payment protocols; Details thereof
    • G06Q20/40Authorisation, 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
    • G06Q20/401Transaction verification
    • G06Q20/4014Identity check for transactions
    • G06Q20/40145Biometric identity checks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/002Countermeasures against attacks on cryptographic mechanisms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0894Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • H04L9/0897Escrow, 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/56Financial cryptography, e.g. electronic payment or e-cash

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Strategic Management (AREA)
  • Finance (AREA)
  • General Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • 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

A kind of self-distroyable disposable hardware wallet
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.
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