CN106571907A - Method and system for securely transmitting data between upper computer and USB flash disk - Google Patents
Method and system for securely transmitting data between upper computer and USB flash disk Download PDFInfo
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- CN106571907A CN106571907A CN201610993236.9A CN201610993236A CN106571907A CN 106571907 A CN106571907 A CN 106571907A CN 201610993236 A CN201610993236 A CN 201610993236A CN 106571907 A CN106571907 A CN 106571907A
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- host computer
- random number
- data
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Classifications
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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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
- H04L9/0625—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI
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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
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
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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
- H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
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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
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
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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
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3226—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using a predetermined code, e.g. password, passphrase or PIN
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses a method for securely transmitting data between an upper computer and a USB flash disk. The method includes the following steps that: when the upper computer needs to send instructions or data to the USB flash disk, the upper computer sends a public key and random number generation request to the USB flash disk at first; the USB flash disk generates a key pair and random numbers and sends the key pair and random numbers to the upper computer; the upper computer performs DES encryption on the instructions or data through using a random number, performs secondary encryption by using a public key and sends a ciphertext to the USB flash disk; and the USB flash disk performs decryption operation on the ciphertext through using a private key and a random number and ultimately obtains relevant instructions or data. The invention also discloses a system for securely transmitting data between an upper computer and a USB flash disk. According to the method and system of the invention, the security of data communication between the upper computer and the USB flash disk is enhanced through the forms of the key pair and random numbers, and replay attack can be further effectively fought against.
Description
Technical field
The present invention relates to safety-oriented data transfer between data transmission security technical field, more particularly to a kind of host computer and USB flash disk
Method and system.
Background technology
Traditional upper computer software and USB flash disk（Encrypted U disk or chip）When carrying out data exchange, SCSI protocol can be used.It is logical
Cross SCSI protocol and incidentally related data sends USB flash disk to（Encrypted U disk or chip）, these data are generally by plaintext or encryption
After be transmitted.For the transmission means of plaintext, it is easy to analyze its agreement by USB packet catchers, and then reaches attack
Purpose.For the data transfer mode of encryption, also the encrypted cipher text of some function commands can be obtained by packet capturing, and then be reached
The purpose of Replay Attack is carried out in certain time point in future.
The content of the invention
For above-mentioned technical problem, random number is resisted the forms such as checking, password, session id by technical scheme of the present invention
The data transmission procedure between host computer and USB flash disk is introduced, and then strengthens the safety communicated between host computer and USB flash disk.
Upper computer end of the present invention adopts with the following method to realize：A kind of method of the safety-oriented data transfer based on host computer,
Including：
If desired instruction or data are sent to USB flash disk, then sends public key and generating random number request to USB flash disk；Receive the public affairs of USB flash disk feedback
After key and random number, des encryption is carried out to instruction or data using the random number, and carry out being incited somebody to action after secondary encryption using public key
Ciphertext is sent to USB flash disk；
If receiving the ciphertext from USB flash disk, instructed or data using obtaining after public key decryptions.
Further, also include：The log-on message of user input is obtained, using the public key and random number to log-on message
Ciphertext is sent to into USB flash disk after being encrypted carries out verification operation, and the session id from USB flash disk, host computer are received if being proved to be successful
Need to carry the session id when sending instruction or data to USB flash disk.
Further, also include：If receiving the error code that USB flash disk judges the session id failure, user is pointed out to need
Again to log in.
Upper computer end of the present invention is realized using following device：A kind of device of the safety-oriented data transfer based on host computer,
Including：
Host computer sending module, for when needing to send instruction or data to USB flash disk, then sending public key and random number life to USB flash disk
Into request；After receiving the public key and random number of USB flash disk feedback, des encryption, and profit are carried out to instruction or data using the random number
Carried out that ciphertext is sent to into USB flash disk after secondary encryption with public key；
Host computer receiver module, for when the ciphertext from USB flash disk is received, then using acquisition instruction or data after public key decryptions.
Further, also include：Host computer login module, for obtaining the log-on message of user input, using the public affairs
Ciphertext is sent to USB flash disk and carries out verification operation by key and random number after being encrypted to log-on message, is received if being proved to be successful and
From the session id of USB flash disk, host computer needs to carry the session id when sending instruction or data to USB flash disk.
Further, also include：Fault alarm module, for when the mistake for receiving the USB flash disk judgement session id failure
Error code, then point out user to need to log in again.
Adopt with the following method to realize in USB flash disk end of the present invention：A kind of method of the safety-oriented data transfer based on USB flash disk, including：
If the public key and generating random number that receive from host computer are asked, generate key pair and random number, and by public key and
Random number is sent to host computer；
If receiving the ciphertext from host computer, ciphertext is decrypted for the first time using private key, and using random number to ciphertext
Carry out being instructed after DES decryption or data；
If desired instruction or data are sent to host computer, is then sent to after being encrypted to instruction or data using private key upper
Machine.
Further, also include：If receiving the ciphertext of the log-on message from host computer, using private key and random number
The log-on message contrast verification of rear and manager setting is decrypted, session id is sent to host computer if being proved to be successful.
Further, also include：If there is no in Preset Time instruction between host computer and USB flash disk or data interacted,
Then judge session id failure, and error code is returned to host computer.
Realized using following device at USB flash disk end of the present invention：A kind of device of the safety-oriented data transfer based on USB flash disk, including：
Key production module, for when receiving from the public key and generating random number request of host computer, then generating key pair
And random number, and public key and random number are sent to into host computer；
Decryption parsing module, for after receiving from the ciphertext of host computer, then being decrypted for the first time to ciphertext using private key, and
Ciphertext is carried out using random number being instructed after DES decryption or data；
Encryption sending module, for when needing to send instruction or data to host computer, then being entered to instruction or data using private key
Host computer is sent to after row encryption.
Further, also include：Authentication module is accessed, for when the ciphertext for receiving the log-on message from host computer
When, then using private key and random number be decrypted after with manager set log-on message contrast verification, if being proved to be successful to
Host computer sends session id.
Further, also include：Monitoring session module, does not exist in Preset Time for working as between host computer and USB flash disk
Instruction or the interaction of data, then judge session id failure, and returns error code to host computer.
The present invention is realized using following system：The system of safety-oriented data transfer between a kind of host computer and USB flash disk, including：On
State the device and any of the above-described safety-oriented data transfer based on USB flash disk of the arbitrary safety-oriented data transfer based on host computer
Device.
To sum up, the present invention provides a kind of method and system of safety-oriented data transfer between host computer and USB flash disk, and host computer is to U
Disk is sent before instruction or data, and the generation request of public key and random number is first sent to USB flash disk；USB flash disk receives raw after above-mentioned request
Into key pair and random number, and public key therein and random number are sent to into host computer；Host computer using random number to instruction or
Data carry out des encryption, and carry out that ciphertext is sent to into USB flash disk after secondary encryption using public key；USB flash disk is obtained after ciphertext using storage
Ciphertext is decrypted for the first time in local private key, and ciphertext is carried out using random number being instructed after DES decryption or data.
Compared with prior art, the present invention has advantages below：The present invention by introduce antagonism checking, encryption and decryption transmission,
The method such as login password and session id, when solving existing upper computer software and being communicated by SCSI protocol and USB flash disk, instruction
Or data are trapped the problem that caused data were stolen, and reduced or caused Replay Attack.
Description of the drawings
In order to be illustrated more clearly that technical scheme, letter will be made to the accompanying drawing to be used needed for embodiment below
Singly introduce, it should be apparent that, drawings in the following description are only some embodiments described in the present invention, for this area
For those of ordinary skill, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
A kind of flow chart of embodiment of the method 1 of safety-oriented data transfer based on host computer that Fig. 1 is provided for the present invention；
A kind of flow chart of embodiment of the method 2 of safety-oriented data transfer based on host computer that Fig. 2 is provided for the present invention；
A kind of device embodiment structure chart of safety-oriented data transfer based on host computer that Fig. 3 is provided for the present invention；
A kind of flow chart of embodiment of the method 1 of safety-oriented data transfer based on USB flash disk that Fig. 4 is provided for the present invention；
A kind of flow chart of embodiment of the method 2 of safety-oriented data transfer based on USB flash disk that Fig. 5 is provided for the present invention；
A kind of device embodiment structure chart of safety-oriented data transfer based on USB flash disk that Fig. 6 is provided for the present invention；
Fig. 7 for safety-oriented data transfer between a kind of host computer for providing of the present invention and USB flash disk system embodiment structure chart.
Specific embodiment
The present invention gives between a kind of host computer and USB flash disk safety-oriented data transfer method and system embodiment, in order that this
Person skilled in the art more fully understands the technical scheme in the embodiment of the present invention, and make the above-mentioned purpose of the present invention, feature and
Advantage can become apparent from understandable, and technical scheme in the present invention is described in further detail below in conjunction with the accompanying drawings：
Present invention firstly provides a kind of embodiment of the method 1 of the safety-oriented data transfer based on host computer, it is adaptable to upper computer end,
As shown in figure 1, including：
S101：If desired instruction or data are sent to USB flash disk, then sends public key and generating random number request to USB flash disk；, wherein it is desired to
Agreement host computer sends the protocol format of public key and generating random number request to USB flash disk；
S102：After receiving the public key and random number of USB flash disk feedback, des encryption is carried out to instruction or data using the random number, and
Carry out that ciphertext is sent to into USB flash disk after secondary encryption using public key；
S103：If receiving the ciphertext from USB flash disk, instructed or data using obtaining after public key decryptions.
It is further preferable that the invention provides a kind of embodiment of the method 2 of the safety-oriented data transfer based on host computer, equally
Suitable for upper computer end, as shown in Fig. 2 including：
S201：The log-on message of user input is obtained, and public key and generating random number request are sent to USB flash disk；Wherein, the login
Information is included but is not limited to：Username and password；Administrator arranges password etc. and logs in letter for USB flash disk or encrypted U disk in advance
Breath, being only input into correct log-on message just can smoothly access；
S202：After receiving the public key and random number of USB flash disk feedback, des encryption, and profit are carried out to log-on message using the random number
Carried out that ciphertext is sent to into USB flash disk after secondary encryption with public key；
S203：The result of USB flash disk feedback is received, S204 is performed if being proved to be successful, received from USB flash disk if authentication failed
Error code, and point out user to log in again；
S204：The session id from USB flash disk is received, needs to carry the session id when sending instruction or data to USB flash disk.
Wherein, at short notice effectively, USB flash disk end can be arranged in Preset Time between host computer and USB flash disk the session id
There is no instruction or the interaction of data, then judge session id failure, user needs to log in again, reacquires session id；Or,
After USB flash disk power down, current sessions ID failures, after USB flash disk is enabled, host computer needs to reacquire session id；Or, upper computer end is used
After family is logged off, current sessions ID failures, after logging on, host computer needs to reacquire session id.
Invention also provides a kind of device 30 of the safety-oriented data transfer based on host computer, it is adaptable to upper computer end,
As shown in figure 3, including：
Host computer sending module 301, for when needing to send instruction or data to USB flash disk, then sending public key and random number to USB flash disk
Generate request；After receiving the public key and random number of USB flash disk feedback, des encryption is carried out to instruction or data using the random number, and
Carry out that ciphertext is sent to into USB flash disk after secondary encryption using public key；
Host computer receiver module 302, for when the ciphertext from USB flash disk is received, then instructing or counting using obtaining after public key decryptions
According to.
Preferably, also include：Host computer login module, for obtaining the log-on message of user input, using the public key
Ciphertext is sent to into USB flash disk after being encrypted to log-on message with random number carries out verification operation, receives from U if being proved to be successful
The session id of disk, host computer needs to carry the session id when sending instruction or data to USB flash disk.
It is highly preferred that also including：Fault alarm module, for when the mistake for receiving the USB flash disk judgement session id failure
Code, then point out user to need to log in again.
Secondly the present invention provides a kind of embodiment of the method 1 of the safety-oriented data transfer based on USB flash disk, it is adaptable to USB flash disk end or
Person's encrypted U disk end, as shown in figure 4, including：
S401：If the public key and generating random number that receive from host computer are asked, key pair and random number are generated, and by public affairs
Key and random number are sent to host computer；
S402：If receiving the ciphertext from host computer, ciphertext is decrypted for the first time using private key, and using random number pair
Ciphertext carries out being instructed after DES decryption or data；
S403：If desired instruction or data are sent to host computer, is then sent to after being encrypted to instruction or data using private key
Host computer.
It is further preferable that the invention provides a kind of embodiment of the method 2 of the safety-oriented data transfer based on USB flash disk, same suitable
For USB flash disk end or encrypted U disk end, as shown in figure 5, including：
S501：If the public key and generating random number that receive from host computer are asked, key pair and random number are generated, and by public affairs
Key and random number are sent to host computer；
S502：If receiving the ciphertext of the log-on message from host computer, obtain after being decrypted using private key and random number
Log-on message；
S503：By log-on message and the log-on message contrast verification of manager's setting, meeting is sent to host computer if being proved to be successful
Words ID, error code is sent if authentication failed to host computer；Wherein, the log-on message is included but is not limited to：User name and close
Code；
S504：If there is no in Preset Time instruction between host computer and USB flash disk or data are interacted, session id failure is judged,
And return error code to host computer.Or, after USB flash disk power down, current sessions ID failures, after USB flash disk is enabled, host computer needs again
Obtain session id；Or, after upper computer end user logs off, current sessions ID failures, after logging on, host computer needs
Reacquire session id.
Wherein, if the session id from the ciphertext carrying of host computer is judged to fail by USB flash disk, USB flash disk returns wrong to upper computer end
Error code prompting user needs to log in the effective session id of acquisition again.
Invention also provides a kind of device 60 of the safety-oriented data transfer based on USB flash disk, it is adaptable to USB flash disk end or encryption
USB flash disk end, as shown in fig. 6, including：
Key production module 601, for when receiving from the public key and generating random number request of host computer, then generating key
Pair and random number, and public key and random number are sent to into host computer；
Decryption parsing module 602, for after receiving from the ciphertext of host computer, then being solved for the first time to ciphertext using private key
It is close, and ciphertext is carried out using random number being instructed after DES decryption or data；
Encryption sending module 603, for when needing to send instruction or data to host computer, then using private key to instruction or data
Host computer is sent to after being encrypted.
Preferably, also include：Authentication module is accessed, for when receiving from the ciphertext of the log-on message of host computer,
The log-on message contrast verification set with manager after being then decrypted using private key and random number, to upper if being proved to be successful
Machine sends session id.
It is highly preferred that also including：Monitoring session module, refers to for working as not exist between host computer and USB flash disk in Preset Time
Order or the interaction of data, then judge session id failure, and returns error code to host computer.
The present invention is realized using following system：The system of safety-oriented data transfer between a kind of host computer and USB flash disk, such as Fig. 7 institutes
Show, including：The device 30 and any of the above-described peace based on USB flash disk of any of the above-described safety-oriented data transfer based on host computer
The device 60 of full transmission data.
Each embodiment in this specification is described by the way of progressive, same or analogous between each embodiment
Part is mutually referring to what each embodiment was stressed is the difference with other embodiment.Especially for device
For embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is implemented referring to method
The part explanation of example.
As described above, above-described embodiment gives a kind of method and system reality of safety-oriented data transfer between host computer and USB flash disk
Example is applied, needs first to ask random number and public key, USB flash disk to receive request to USB flash disk to before USB flash disk transmission instruction or data in host computer
Key pair and random number being generated afterwards, and public key and random number being sent to into host computer, host computer is carried out using random number and public key
Ciphertext is sent to into USB flash disk after encrypting twice, USB flash disk is using the corresponding instruction of acquisition after private key and random nnrber decryption or data；Meanwhile,
Preferably, login password can be set for USB flash disk, the only correct log-on message of user input is only possible to the transmission instruction into USB flash disk
Or data；It is further preferable that after User logs in success, USB flash disk feeds back to the effective session at short notice of host computer one
ID, host computer sends instruction to USB flash disk every time or data are required for carrying the session id, if host computer and USB flash disk in Preset Time
Between do not carry out any instruction or the interaction of data, then session id failure needs to point out user to log in again and obtain
New session id.
Above-described embodiment provided by the present invention is all correspondingly improved to original host computer and USB flash disk end, and then
Verified using random number antagonism, login password is set, the data biography that the means such as session id are improved between host computer and USB flash disk is carried
Defeated safety, when solving in prior art upper computer software and being communicated by SCSI protocol and USB flash disk or encrypted U disk,
Data and dependent instruction may be trapped and then cause data message to be stolen, reduce or the problems such as Replay Attack.
Above example is to illustrative and not limiting technical scheme.Appointing without departing from spirit and scope of the invention
What modification or local are replaced, and all should be covered in the middle of scope of the presently claimed invention.
Claims (13)
1. a kind of method of the safety-oriented data transfer based on host computer, it is characterised in that include：
If desired instruction or data are sent to USB flash disk, then sends public key and generating random number request to USB flash disk；Receive the public affairs of USB flash disk feedback
After key and random number, des encryption is carried out to instruction or data using the random number, and carry out being incited somebody to action after secondary encryption using public key
Ciphertext is sent to USB flash disk；
If receiving the ciphertext from USB flash disk, instructed or data using obtaining after public key decryptions.
2. the method for claim 1, it is characterised in that also include：The log-on message of user input is obtained, using described
Ciphertext is sent to USB flash disk and carries out verification operation by public key and random number after being encrypted to log-on message, is received if being proved to be successful
From the session id of USB flash disk, host computer needs to carry the session id when sending instruction or data to USB flash disk.
3. method as claimed in claim 2, it is characterised in that also include：If receiving USB flash disk judges the session id failure
Error code, then point out user to need to log in again.
4. a kind of device of the safety-oriented data transfer based on host computer, it is characterised in that include：
Host computer sending module, for when needing to send instruction or data to USB flash disk, then sending public key and random number life to USB flash disk
Into request；After receiving the public key and random number of USB flash disk feedback, des encryption, and profit are carried out to instruction or data using the random number
Carried out that ciphertext is sent to into USB flash disk after secondary encryption with public key；
Host computer receiver module, for when the ciphertext from USB flash disk is received, then using acquisition instruction or data after public key decryptions.
5. device as claimed in claim 4, it is characterised in that also include：Host computer login module, for obtaining user input
Log-on message, ciphertext is sent to into USB flash disk after being encrypted to log-on message using the public key and random number carries out checking behaviour
Make, the session id from USB flash disk is received if being proved to be successful, host computer needs to carry the meeting when sending instruction or data to USB flash disk
Words ID.
6. device as claimed in claim 5, it is characterised in that also include：Fault alarm module, sentences for receiving USB flash disk
The error code of the fixed session id failure, then point out user to need to log in again.
7. a kind of method of the safety-oriented data transfer based on USB flash disk, it is characterised in that include：
If the public key and generating random number that receive from host computer are asked, generate key pair and random number, and by public key and
Random number is sent to host computer；
If receiving the ciphertext from host computer, ciphertext is decrypted for the first time using private key, and using random number to ciphertext
Carry out being instructed after DES decryption or data；
If desired instruction or data are sent to host computer, is then sent to after being encrypted to instruction or data using private key upper
Machine.
8. method as claimed in claim 7, it is characterised in that also include：If receiving the log-on message from host computer
Ciphertext, then be decrypted the log-on message contrast verification of rear and manager setting, if being proved to be successful using private key and random number
Session id is sent to host computer.
9. method as claimed in claim 8, it is characterised in that also include：If not depositing between host computer and USB flash disk in Preset Time
In instruction or the interaction of data, then session id failure is judged, and return error code to host computer.
10. a kind of device of the safety-oriented data transfer based on USB flash disk, it is characterised in that include：
Key production module, for when receiving from the public key and generating random number request of host computer, then generating key pair
And random number, and public key and random number are sent to into host computer；
Decryption parsing module, for after receiving from the ciphertext of host computer, then being decrypted for the first time to ciphertext using private key, and
Ciphertext is carried out using random number being instructed after DES decryption or data；
Encryption sending module, for when needing to send instruction or data to host computer, then being entered to instruction or data using private key
Host computer is sent to after row encryption.
11. devices as claimed in claim 10, it is characterised in that also include：Access authentication module, for when receive from
During the ciphertext of the log-on message of host computer, then the log-on message pair of rear and manager setting is decrypted using private key and random number
Than checking, session id is sent to host computer if being proved to be successful.
12. devices as claimed in claim 11, it is characterised in that also include：Monitoring session module, for when in Preset Time
Interior host computer with there is no instruction between USB flash disk or data are interacted, then judge session id failure, and error code is returned to host computer.
The system of safety-oriented data transfer between a kind of 13. host computers and USB flash disk, it is characterised in that include：The arbitrary institute of claim 4 to 6
The device stated and the arbitrary described device of claim 10 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610993236.9A CN106571907A (en) | 2016-11-11 | 2016-11-11 | Method and system for securely transmitting data between upper computer and USB flash disk |
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|---|---|---|---|
| CN201610993236.9A CN106571907A (en) | 2016-11-11 | 2016-11-11 | Method and system for securely transmitting data between upper computer and USB flash disk |
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| CN201610993236.9A Pending CN106571907A (en) | 2016-11-11 | 2016-11-11 | Method and system for securely transmitting data between upper computer and USB flash disk |
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| CN107506668A (en) * | 2017-08-31 | 2017-12-22 | 北京计算机技术及应用研究所 | A kind of USB flash disk access method based on communication information real-time authentication |
| CN107959552A (en) * | 2017-10-27 | 2018-04-24 | 浙江众合科技股份有限公司 | Single channel realizes the method and system of request confirmation operation |
| CN108509812A (en) * | 2018-03-19 | 2018-09-07 | 合肥泓泉档案信息科技有限公司 | The storage system and storage method of archives |
| CN109379345A (en) * | 2018-09-28 | 2019-02-22 | 阿里巴巴集团控股有限公司 | Sensitive information transmission method and system |
| CN110780829A (en) * | 2019-10-15 | 2020-02-11 | 武汉牌洲湾广告科技有限公司 | Advertisement printing method, device, equipment and medium based on cloud service |
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| CN114221762A (en) * | 2021-12-13 | 2022-03-22 | 深圳壹账通智能科技有限公司 | Private key storage method, private key reading method, private key management device, private key management equipment and private key storage medium |
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