CN106909824A - A kind of ciphering and deciphering device and method - Google Patents
A kind of ciphering and deciphering device and method Download PDFInfo
- Publication number
- CN106909824A CN106909824A CN201510969787.7A CN201510969787A CN106909824A CN 106909824 A CN106909824 A CN 106909824A CN 201510969787 A CN201510969787 A CN 201510969787A CN 106909824 A CN106909824 A CN 106909824A
- Authority
- CN
- China
- Prior art keywords
- ciphering
- master control
- safety chip
- deciphering
- control safety
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/34—User authentication involving the use of external additional devices, e.g. dongles or smart cards
- G06F21/35—User authentication involving the use of external additional devices, e.g. dongles or smart cards communicating wirelessly
-
- 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
- G06F21/79—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 in semiconductor storage media, e.g. directly-addressable memories
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2141—Access rights, e.g. capability lists, access control lists, access tables, access matrices
Abstract
The invention discloses a kind of ciphering and deciphering device and method, belong to data safety technical field of memory.Master control safety chip (1) of the ciphering and deciphering device including the PIN that is stored with, the wireless communication module (2) being connected with master control safety chip (1), also include the rechargeable battery (3) for being powered for device, rechargeable battery (3) is connected with the master control safety chip (1) and wireless communication module (2) respectively.Using ciphering and deciphering device provided by the present invention and method; it is safely stored into other storage devices after data in the terminal devices such as PC or mobile phone being added into solution; and protect encryption after ciphertext data in the presence without ciphering and deciphering device; the access to ciphertext data cannot be realized, the security of the data stored in storage device is substantially increased.
Description
Technical field
The present invention relates to data safety technical field of memory, and in particular to a kind of ciphering and deciphering device and method.
Background technology
Currently, with the fast development of electronic equipment, user can typically store same part data file
To in different electronic equipments, to facilitate checking at any time to data.And user to oneself private data,
The security of the information such as vital document, confidential data is also increasingly paid attention to, it is undesirable to individual without permission
Or organization access and these information of reading, that is to say, that user wishes that these data can be stored securely in
Write from memory in equipment, even if lawless person has stolen these equipment, these important personal information also cannot
It is normal to access or read.Although user can be encrypted storage by the way of encryption software to data,
But after mobile phone is lost or be stolen, lawless person is still able to crack encryption data.Therefore, it is badly in need of one
The encryption and decryption mode planted so that even if lawless person steals user storage device, the weight stored in equipment
The personal information wanted also cannot normally be accessed and read.It is new that the present invention is exactly proposed regarding to the issue above
The ciphering and deciphering device and method of type.
The content of the invention
For defect present in prior art, it is an object of the invention to provide a kind of ciphering and deciphering device and
Method, using the device and method, can be by data safety storage in storage device, even if storage sets
Standby to lose, the ciphertext data in equipment cannot also be accessed by lawless person.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of ciphering and deciphering device, including the PIN that is stored with master control safety chip, with master control safety
The wireless communication module of chip connection, also including the rechargeable battery for being powered for device, chargeable electricity
Pond is connected with the master control safety chip and wireless communication module respectively.
Further, a kind of ciphering and deciphering device as described above, the device also includes carrying out rechargeable battery
The power management module charged with power supply management, rechargeable battery is by power management module and master control safety
Chip is connected.
Further, a kind of ciphering and deciphering device as described above, the power management module includes Power convert
Circuit, rechargeable battery is connected with master control safety chip and wireless communication module respectively by power-switching circuit
Connect.
Further, a kind of ciphering and deciphering device as described above, the power management module is included to chargeable
Battery carries out the charge management circuit of charge protection, and charge management circuit is connected with rechargeable battery.
Further, a kind of ciphering and deciphering device as described above, the device also includes connecting with master control safety chip
The display module for connecing, the charge management circuit is also connected with master control safety chip.
Further, a kind of ciphering and deciphering device as described above, the master control safety chip is built-in TimeCOS
The safety chip of smart card operating system.
Further, a kind of ciphering and deciphering device as described above, the wireless communication module is Wif i communication moulds
Block or bluetooth communication.
Further, a kind of ciphering and deciphering device as described above, the device medium of the ciphering and deciphering device is can
The apparatus carriers of wearable intelligent equipment.
Based on above-mentioned ciphering and deciphering device, present invention also offers a kind of encipher-decipher method, including will be to be encrypted
The step of data are encrypted and are decrypted encryption data, the mode that be-encrypted data is encrypted
Including:
(1) terminal device is connected by wireless communication module with ciphering and deciphering device, and storage device sets with terminal
Standby connection, terminal device sends device authentication and asks to ciphering and deciphering device;The device authentication request includes
The PIN of encryption;;
(2) ciphering and deciphering device receiving terminal apparatus send device authentication request, master control safety chip according to
The PIN encrypted described in its decryption key decryption for prestoring, and compare the PIN after decryption
Whether the PIN with its storage inside is identical, if so, then enter next step, if it is not, then master control
Safety chip sends authentication error and points out to terminal device;The decruption key is ciphering and deciphering device and terminal
The decruption key corresponding with the key of terminal device encryption PIN of equipment agreement;
(3) be-encrypted data is sent to master control safety chip by terminal device, and master control safety chip will be to be added
Terminal device is returned to after ciphertext data encryption, be sent to encryption data in storage device and store by terminal device;
The mode that encryption data is decrypted is included:
1) terminal device is connected by wireless communication module with ciphering and deciphering device, storage device and terminal device
Connection, terminal device sends device authentication and asks to ciphering and deciphering device;The device authentication request includes adding
Close PIN;
2) the device authentication request that decryption device receiving terminal apparatus send, master control safety chip is pre- according to its
Described in the decryption key decryption deposited encrypt PIN, and compare decryption after PIN and its
Whether the PIN of storage inside is identical, if so, then enter next step, if it is not, then master control safety
Chip sends authentication error and points out to terminal device;
3) terminal device obtains the encryption data in storage device, and encryption data is sent into encryption and decryption dress
Put, master control safety chip returns to terminal device after encryption data is decrypted.
Further, a kind of encipher-decipher method as described above, it is characterised in that:The storage device includes
USB flash disk.
The beneficial effects of the present invention are:Ciphering and deciphering device provided by the present invention and method, can be by end
Data safety in end equipment is stored in special storage device, and protects the ciphertext data after encryption to exist
Under there is no a participation of ciphering and deciphering device, it is impossible to realize the access to storage device, substantially increase storage and set
The security of standby middle data.
Brief description of the drawings
Fig. 1 is a kind of structural representation of ciphering and deciphering device in the specific embodiment of the invention;
Fig. 2 is a kind of flow chart of encipher-decipher method in the specific embodiment of the invention.
Specific embodiment
With reference to Figure of description, the present invention is described in further detail with specific embodiment.
Fig. 1 shows a kind of structural representation of the ciphering and deciphering device provided in the specific embodiment of the invention
Figure, as can be seen from Figure, the ciphering and deciphering device includes master control safety chip 1, with master control safety chip 1
The wireless communication module 2 of connection, also including the rechargeable battery 3 for being powered for device, rechargeable battery
3 are connected with the master control safety chip 1 and wireless communication module 2 respectively;Master control safety chip 1 is stored
There is PIN PIN code, the terminal device for realizing being connected with ciphering and deciphering device by PIN
Authentication.
In present embodiment, master control safety chip 1 can be using built-in TimeCOS smart card operations system
The safety chip of system, be stored with safely various keys, PIN code and associated documents in master control safety chip 1,
Possess the security algorithms such as encryption, decryption, signature and checking, therefore, exterior terminal equipment can be by the
After wireless communication module 2 is connected with ciphering and deciphering device, the peace to data is realized by master control safety chip 1
Full encryption, then by storage in the data is activation after encryption to special storage device (such as USB flash disk), store
Encryption data only have and can be decrypted by the ciphering and deciphering device, therefore, using the device, that is, use
The storage device at family is lost or stolen, and the encryption data stored in equipment cannot also be accessed.
As shown in figure 1, in present embodiment, the ciphering and deciphering device also includes carrying out rechargeable battery 3
The power management module 4 charged with power supply management, rechargeable battery 3 is distinguished by power management module 3
It is connected with master control safety chip 1 and wireless communication module 2.
In present embodiment, the power management module 4 includes power-switching circuit 5 and to chargeable electricity
Pond 3 carries out the charge management circuit 6 of charge protection, and rechargeable battery 3 passes through 5 points of power-switching circuit
It is not connected with master control safety chip 1 and wireless communication module 2, charge management circuit 6 and rechargeable battery
4 connections.Master control safety chip 1 and wireless communication module 2 are by rechargeable battery 3 through power-switching circuit 5
Voltage stabilizing is into being master control safety chip after the operating voltage of master control safety chip 1 and wireless communication module 2 respectively
1 and wireless communication module 2 power respectively.Operating voltage such as master control safety chip 1 is 3.3V, then may be used
Rechargeable battery 3 exports 3.3V voltages to master control safety chip 1 after power-switching circuit 5, is master control peace
Full chip 1 is powered.The power-switching circuit 5 can use low pressure difference linear voltage regulator LDO, also may be used
With using dc voltage changer DC/DC.
In present embodiment, the charge management circuit 6 can also be connected with master control safety chip 1,
When being charged to rechargeable battery 3, master control safety chip 1 is supervised by monitoring charge management circuit 6
Whether control rechargeable battery 3 is full of, full of when can on a display screen show the prompt message that has been filled with,
Therefore, the ciphering and deciphering device can also include the display module 7 being connected with master control safety chip 1.
In present embodiment, the wireless communication module 2 can be Wif i communication modules or Bluetooth communication mould
Block or other wireless communication modules.The device medium of the ciphering and deciphering device is setting for wearable smart machine
Standby carrier, that is to say, that the ciphering and deciphering device can be fabricated to the form of wearable device, such as bracelet or
Wrist-watch, is convenient for carrying.
Based on the ciphering and deciphering device shown in Fig. 1, present embodiment additionally provides a kind of encipher-decipher method,
Separately it is stored to storage device after the data encryption that the encipher-decipher method needs terminal device suitable for user,
Even if storage device is lost or stolen, other lawless persons cannot also access the data in storage device.Should
Method includes the step of being encrypted be-encrypted data and be decrypted the data after encryption.Wherein,
The mode that be-encrypted data is encrypted is as shown in Fig. 2 mainly include the following steps that:
Step S11:Terminal device is connected by wireless communication module with ciphering and deciphering device, storage device with
Terminal device is connected, and terminal device will send the PIN of encryption to ciphering and deciphering device;
Step S23:The PIN that master control safety chip is sent by comparison terminal equipment with its inside
Whether the PIN of storage is identical to be verified to terminal device;
Terminal device with wireless communication module, by the wireless communication module and plus solution of ciphering and deciphering device
Close device connection, after connection, terminal device sends device authentication and asks to ciphering and deciphering device, device authentication
Request includes the PIN of encryption, and the PIN is used for identity of the ciphering and deciphering device to equipment
Checking, verifies whether user is validated user.In practical application, installing terminal equipment and the encryption and decryption
The corresponding encryption and decryption client software of device, data friendship is carried out by wireless communication module and ciphering and deciphering device
Mutually.
After ciphering and deciphering device receives the device authentication request of the transmission of terminal device, master control safety chip is adopted
The PIN encrypted is decrypted with its decruption key for prestoring, obtains the individual of terminal device transmission
People's identification code, will decrypt the PIN prestored in the PIN and ciphering and deciphering device for obtaining
Compare, if two PINs are consistent, after terminal device can be carried out by ciphering and deciphering device
Continuous operation, if it is inconsistent, ciphering and deciphering device does not pass through to terminal device checking, master control safety chip
Authentication error is sent to terminal device to point out.
Wherein, the decruption key is that ciphering and deciphering device is arranged with terminal device and terminal device encryption
The corresponding decruption key of the key of PIN.Carry out encryption key involved during device authentication
Or the key that be-encrypted data is encrypted or decrypts is different from follow-up ciphering and deciphering device by decruption key
's.
In present embodiment, the storage device refers to the equipment dedicated for data storage, and storage sets
It is standby to use different connected modes, such as wireless connection or wired company according to actual conditions from terminal device
Connect.For example, for storage U disk, USB flash disk is connected by USB interface with terminal device.
Step S13:Be-encrypted data is sent to master control safety chip, master control safety chip by terminal device
Terminal device is returned to after be-encrypted data is encrypted, encryption data is sent to storage device by terminal device
Middle storage.
After terminal device is verified, ciphering and deciphering device meeting prompt terminal equipment sends be-encrypted data
Prompting, after ciphering and deciphering device receives the be-encrypted data of terminal device transmission, master control safety chip is to data
Return to terminal device after being encrypted, be sent to for encryption data another in storage device by terminal device
Deposit.
Stored in storage device when terminal device needs to access to read after it is encrypted by ciphering and deciphering device
During data, the mode that be decrypted for encryption data by the encipher-decipher method is similar with above-mentioned cipher mode, main
Comprise the following steps:
1) terminal device is connected by wireless communication module with ciphering and deciphering device, storage device and terminal device
Connection, terminal device sends device authentication and asks to ciphering and deciphering device;The device authentication request includes adding
Close PIN;
2) the device authentication request that decryption device receiving terminal apparatus send, master control safety chip is pre- according to its
Described in the decryption key decryption deposited encrypt PIN, and compare decryption after PIN and its
Whether the PIN of storage inside is identical, if so, then enter next step, if it is not, then master control safety
Chip sends authentication error and points out to terminal device;
3) terminal device obtains the encryption data in storage device, and encryption data is sent into encryption and decryption dress
Put, master control safety chip returns to terminal device after encryption data is decrypted.
By the above-mentioned encipher-decipher method shown in Fig. 2, the data of safety storage will be needed in terminal device
Storage is led again after ciphering and deciphering device is encrypted in special storage device, and is needed in the terminal device
When reading the data in storage device, will be solved again after the secure decryption of data is encrypted by ciphering and deciphering device
Data after close return to the terminal device, and the safety for realizing data in terminal device is separately deposited and access.
For example, for needing for the significant data on a PC to be safely stored into USB flash disk, PC is by wireless
Communication module and ciphering and deciphering device are connected, and data are passed through nothing by encryption and decryption client software by PC
Line communication module is sent to ciphering and deciphering device, and the master control safety chip of ciphering and deciphering device is by the close of its internal memory
Key and AES will be added to returning to PC by communication again after data encryption by PC
Ciphertext data is stored in being sent to USB flash disk.
When in actual applications, using above-mentioned encipher-decipher method provided by the present invention, ciphering and deciphering device can
Only to be tested by PIN terminal device in terminal recognition First Contact Connections terminal device
Card, after being verified for the first time, can give tacit consent to terminal device and encryption and decryption apparatus bound, terminal device
Reusing ciphering and deciphering device is, can verify again, to improve efficiency.
Using ciphering and deciphering device provided by the present invention and method, the terminal device such as mobile phone or PC with plus
When decryption device communicates, be required for first carrying out the operation that PIN code checking can carry out below, without plus
The participation of device is decrypted, the encryption data in storage device cannot be accessed, and realize the peace of data in equipment
Full storage.
Ciphering and deciphering device proposed by the present invention can solve user in storage device safe data storage will
Ask, and the composition device of device is few, can be fabricated to small volume, bracelet easy to carry or other just
Portable device.By the use of " bracelet ", user can be by the terminal devices such as PC or mobile phone
Data file encrypted secure to be protected is needed to store in storage device.The user of " bracelet " must lead to
Cross authentication rear can be used, such as PIN code checking.User must could visit by " bracelet "
Ask the encryption data in storage device.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention
The spirit and scope of invention.So, if these modifications of the invention and modification belong to right of the present invention and want
Ask and its equivalent technology within the scope of, then the present invention be also intended to comprising these change and modification.
Claims (10)
1. a kind of ciphering and deciphering device, it is characterised in that:The safe core of master control including the PIN that is stored with
Piece (1), the wireless communication module (2) being connected with master control safety chip (1), also including for being dress
Put the rechargeable battery (3) of power supply, rechargeable battery (3) respectively with the master control safety chip (1)
Connected with wireless communication module (2).
2. a kind of ciphering and deciphering device according to claim 1, it is characterised in that:The device also includes
The power management module (4) for rechargeable battery (3) charge with power supply management, rechargeable battery
(3) it is connected with master control safety chip (1) by power management module (4).
3. a kind of ciphering and deciphering device according to claim 2, it is characterised in that:The power management
Module (4) includes power-switching circuit (5), and rechargeable battery (3) is by power-switching circuit (5)
It is connected with master control safety chip (1) and wireless communication module (2) respectively.
4. a kind of ciphering and deciphering device according to claim 2, it is characterised in that:The power management
Module (4) charges including carrying out the charge management circuit (6) of charge protection to rechargeable battery (3)
Management circuit (6) is connected with rechargeable battery (4).
5. a kind of ciphering and deciphering device according to claim 4, it is characterised in that:The device also includes
The display module (7) being connected with master control safety chip (1), the charge management circuit (6) also with master
Control safety chip (1) connection.
6. a kind of ciphering and deciphering device according to claim 1, it is characterised in that:The master control safety
Chip (1) is the safety chip of built-in TimeCOS smart card operating systems.
7. according to a kind of ciphering and deciphering device of claim 1, it is characterised in that:The wireless communication module (2)
It is Wifi communication modules or bluetooth communication.
8. according to a kind of ciphering and deciphering device that one of claim 1 to 7 is described, it is characterised in that:It is described
The device medium of ciphering and deciphering device is the apparatus carriers of wearable smart machine.
9. a kind of a kind of encipher-decipher method of the ciphering and deciphering device being based on described in claim 1, including will treat
The step of encryption data is encrypted and is decrypted encryption data, it is characterised in that:By number to be encrypted
Include according to the mode being encrypted:
(1) terminal device is connected by wireless communication module with ciphering and deciphering device, and storage device sets with terminal
Standby connection, terminal device sends device authentication and asks to ciphering and deciphering device;The device authentication request includes
The PIN of encryption;;
(2) ciphering and deciphering device receiving terminal apparatus send device authentication request, master control safety chip according to
The PIN encrypted described in its decryption key decryption for prestoring, and compare the PIN after decryption
Whether the PIN with its storage inside is identical, if so, then enter next step, if it is not, then master control
Safety chip sends authentication error and points out to terminal device;The decruption key is ciphering and deciphering device and terminal
The decruption key corresponding with the key of terminal device encryption PIN of equipment agreement;
(3) be-encrypted data is sent to master control safety chip by terminal device, and master control safety chip will be to be added
Terminal device is returned to after ciphertext data encryption, be sent to encryption data in storage device and store by terminal device;
The mode that encryption data is decrypted is included:
1) terminal device is connected by wireless communication module with ciphering and deciphering device, storage device and terminal device
Connection, terminal device sends device authentication and asks to ciphering and deciphering device;The device authentication request includes adding
Close PIN;
2) the device authentication request that decryption device receiving terminal apparatus send, master control safety chip is pre- according to its
Described in the decryption key decryption deposited encrypt PIN, and compare decryption after PIN and its
Whether the PIN of storage inside is identical, if so, then enter next step, if it is not, then master control safety
Chip sends authentication error and points out to terminal device;
3) terminal device obtains the encryption data in storage device, and encryption data is sent into encryption and decryption dress
Put, master control safety chip returns to terminal device after encryption data is decrypted.
10. a kind of encipher-decipher method according to claim 9, it is characterised in that:The storage sets
It is standby to include USB flash disk.
Priority Applications (1)
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CN201510969787.7A CN106909824A (en) | 2015-12-22 | 2015-12-22 | A kind of ciphering and deciphering device and method |
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CN201510969787.7A CN106909824A (en) | 2015-12-22 | 2015-12-22 | A kind of ciphering and deciphering device and method |
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Publication Number | Publication Date |
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Family
ID=59200988
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CN201510969787.7A Pending CN106909824A (en) | 2015-12-22 | 2015-12-22 | A kind of ciphering and deciphering device and method |
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CN107864133A (en) * | 2017-11-01 | 2018-03-30 | 卢冠熊 | A kind of wireless authentication secrecy flash memory device and encryption and authentication method |
CN109670220A (en) * | 2018-12-05 | 2019-04-23 | 西南石油大学 | A kind of horizontal well air water two-phase method for numerical simulation based on unstrctured grid |
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CN111079187A (en) * | 2019-12-23 | 2020-04-28 | 江苏恒宝智能系统技术有限公司 | Smart card and file management method thereof |
CN111079187B (en) * | 2019-12-23 | 2022-04-01 | 恒宝股份有限公司 | Smart card and file management method thereof |
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Application publication date: 20170630 |