CN105071933B - Quantal data terminal applied to PSTN public networks - Google Patents
Quantal data terminal applied to PSTN public networks Download PDFInfo
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- CN105071933B CN105071933B CN201510563255.3A CN201510563255A CN105071933B CN 105071933 B CN105071933 B CN 105071933B CN 201510563255 A CN201510563255 A CN 201510563255A CN 105071933 B CN105071933 B CN 105071933B
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Abstract
The invention discloses a kind of quantal data terminal applied to PSTN public networks, analog-to-digital conversion module input is connected with telephone wire；Digital isolation module output end is connected with to the input of digital modulating and demodulating signal module；Digital signal modulated demodulation module is connected by UART interface with control MCU；Also include the RECIEVE modules for speech play, for the MIC modules of speech sample and two amplification modules；One of amplification module amplifies for audio, and another amplification module is used to amplify the signal of microphone collection；Control MCU is concatenated with one of amplification module and RECIEVE modules successively by DAC；Control MCU is concatenated with another amplification module and MIC modules successively by ADC.The present invention can realize the transmission of smooth clearly secret telephony and private data on common PSTN, and to key SD card multiple protective, improve user's safety in utilization.
Description
Technical field
The present invention relates to a kind of quantal data terminal, more particularly to a kind of quantal data terminal applied to PSTN public networks.
Background technology
Current PSTN network is usually to simulate access in client terminal, after the distributing cabinet and interchanger by operator
Data signal is then converted into, wherein modulus, digital-to-analogue conversion has distortion.This is also that the present invention uses digital encryption rather than mould
One of the reason for intending encryption.Digital data transmission is carried out in analog line, it is necessary to carry out the modulation of data signal in order to realize
And demodulation.This in modulation, the design and selection of demodulation module to proposing higher requirement.The existing quantum based on PSTN public networks
Exist in data terminal：1) volume is larger, is not suitable for outgoing carrying；2) and the matching of other telephone plants is poor, and tonequality is general；3)
Protection to key SD card is poor, and SD card can conveniently be taken out, and be accessed on common computer；4) professional audio compression chip is used,
Cost is higher, and security reduces.
The content of the invention
It is an object of the invention to provide a kind of quantal data terminal applied to PSTN public networks, the amount applied to PSTN public networks
Subdata terminal is based on PSTN public networks, and the transmission of smooth clearly secret telephony and private data can be realized on common PSTN,
And multiple protective is realized to key SD card, improve user's safety in utilization.
To realize above-mentioned technical purpose, the technical scheme that the present invention takes is：Quantal data applied to PSTN public networks is whole
End, including the control MCU and speech processes MCU with controlling MCU to electrically connect；It is characterized in that:Also include respectively with speech processes
The SRAM and key SD card of MCU connections；SRAM and key SD card are used to store key；Also include by USB interface and control
The charge port of MCU connections；Also include being used for by analog signal switch to the analog-to-digital conversion module of data signal, digital isolation module and
For being modulated the digital signal modulated demodulation module with demodulation to data signal；Analog-to-digital conversion module input and telephone wire
Connection；Digital isolation module output end is connected with the input of digital signal modulated demodulation module；Digital signal modulated solution mode transfer
Block is connected by UART interface with control MCU；
Also include the RECIEVE modules for speech play, for the MIC modules of speech sample and two amplification modules；
One of amplification module amplifies for audio, and another amplification module is used to amplify the signal of microphone collection；Control MCU
Concatenated successively with one of amplification module and RECIEVE modules by DAC；MCU is controlled to amplify successively with another by ADC
Module and MIC modules concatenation；
The SD card interface for being used to read and write the user file for storing transmission to be encrypted for also including being connected with control MCU respectively is used
In copy key, charging or as the expanding USB interface for accessing user file transmission card and for showing and operating secrecy eventually
The LCD buttons at end.
Secrecy terminal supports file transmission, opens a SD mouth for users to use, the copy content that needs can be transmitted
Onto this file transmission card.
As further improved technical scheme of the present invention, described to control MCU be STM32F103VE series processors.
As further improved technical scheme of the present invention, the speech processes MCU is STM32F205RE series of processes
Device；
As further improved technical scheme of the present invention, SRAM and the deletion of used key, the deletion of power down key.
As further improved technical scheme of the present invention, the SRAM being connected with speech processes MCU and key SD card
Mode is wiped with hardware in key crushing, used storage region is wiped, and writes new pseudo random number, used key
It is unreducible.
As further improved technical scheme of the present invention, external USB mouth can not access key SD card, and be supplied to pair
Also without read operation in outer access interface, SD card, which can only be write, to be read.
As further improved technical scheme of the present invention, open file transmission card and key SD card to user is
SDHC cards.
The present invention has selected the Modem module of technical grade as the core of data modem, is ensureing that systemic-function is real
While now with stability, development difficulty is greatly reduced, beneficial to the rapid shaping of product.Modem module selects in type selecting
The module of the multiple functions such as voice, fax, data transmission can be supported, supports to include text for the secrecy transmission of digital document
The encrypted transmission of the type files such as shelves, picture.Modem module is connected with rear end MCU by full duplex UART, simple to operate.Adopt
With " one-time pad " symmetric cryptography mode, it can take key that transmission is encrypted to call and file from QKD in real time, can also be
Key storage region (RAM, SD card) prestores key, for going out or being used without QKD places.In a word, the present invention is based on
PSTN public networks, the transmission of smooth clearly secret telephony and private data can be realized on common PSTN, and it is real to key SD card
Existing multiple protective, improves user's safety in utilization.
Figure of description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is CODEC software handling process schematic diagram.
Fig. 3 upper computer softwares write the schematic flow sheet of key SD card.
Embodiment
Embodiment 1
Referring to Fig. 1, Fig. 2 and Fig. 3, the quantal data terminal of PSTN public networks should be used for, including control MCU and with control
The speech processes MCU of MCU electrical connections；Also include respectively with the speech processes MCU SRAM being connected and key SD card；SRAM and key
SD card is used to store key；Also include by USB interface with controlling the charge port that MCU is connected；Also include being used to believe simulation
Number switch to the analog-to-digital conversion module of data signal, digital isolation module and for being modulated the numeral with demodulation to data signal
Modulating and demodulating signal module；Analog-to-digital conversion module input is connected with telephone wire；Digital isolation module output end and data signal
The input connection of modulation /demodulation module；Digital signal modulated demodulation module is connected by UART interface with control MCU；Also include
RECIEVE modules for speech play, for the MIC modules of speech sample and two amplification modules；One of amplification mould
Block amplifies for audio, and another amplification module is used to amplify the signal of microphone collection；Control MCU by DAC successively with
One of amplification module and RECIEVE module concatenation；Control MCU by ADC successively with another amplification module and MIC modules
Concatenation；The SD card interface for being used to read and write the user file for storing transmission to be encrypted for also including being connected with control MCU respectively is used for
Copy key, charging or as the expanding USB interface for accessing user file transmission card and for showing and operating secrecy terminal
LCD and button.Secrecy terminal supports file transmission, opens a SD mouth for users to use, the content that needs can be transmitted
Copy on this file transmission card.
It is preferably, described that to control MCU be STM32F103VE series processors.The speech processes MCU is
STM32F205RE series processors.The used keys of SRAM are deleted, and power down key is deleted.It is described to be connected with speech processes MCU
SRAM and key SD card wipe mode in key crushing with hardware, and used storage region data are wiped, and writes new
Pseudo random number, used key are unreducible.External USB mouth can not access key SD card, external access interface without read operation,
SD card, which can only be write, to be read.Open file transmission card and key SD card to user is SDHC cards.
The quantal data terminal of PSTN public networks, which should be used for, two MCU, as shown in figure 1, one is done control and used, one is done
Speech processes are used.Main control unit is the core supervisor of system operation, it is necessary to be responsible for allotment, path and the memory of system resource
Read-write, detection and processing, the display of information of user interface information.The present invention realizes that more compression bit rates are optional, can through actual measurement
It can clearly be conversed under 5000bps code checks and distortion rate is relatively low, simple voice authentication can be carried out.Even in communication environment
In the case of very poor, the clear call under 3000bps code checks can be also supported.
For privacy product, the security of key is the key of privacy product safety.Due to being encrypted using " one-time pad "
Technology, as long as can ensure that used key wipes crushing in time, unused key is stolen not to produce harm, as long as will match somebody with somebody with it
Unused key on machine is abandoned, so as to ensure the security of privacy product.
For quantal data terminal, the present invention supports two kinds of key storage modes, SRAM and SD card storage.SRAM power down is close
Key is deleted, and ensure that the security of key.
In addition, for for a long time in outer user, the present invention also supports SD card key storage mode, maximum is supported to arrive 8G keys.
For the security of SD card cipher key user, with the following methods guarantee key：
1) in key crushing, the present invention wipes mode with hardware, and used storage region data are wiped, and writes new
Pseudo random number, used key is unreducible；
2) external USB mouth is accessed less than key SD card, and without read operation in external access interface, SD card can only be write can not
Read；
3) key SD card is fixed in casing in structure, key card can only can just be stolen by destroying casing, casing one
Denier is destroyed necessarily artificially to be can be found that.
Key storage SD card is invisible on common computer, and the special upper computer software that may only be developed with my company is carried out
Key can be just write after multifactor authentication, and cipher key content is unidirectionally unreadable, may only write.It ensure that the peace of key SD card
Entirely.
Claims (7)
1. a kind of quantal data terminal applied to PSTN public networks, including control MCU and the speech processes with controlling MCU to electrically connect
MCU；It is characterized in that:Also include respectively with the speech processes MCU SRAM being connected and key SD card；SRAM and key SD card are used
In storage key；Also include by USB interface with controlling the charge port that MCU is connected；Also include being used to switch to count by analog signal
The analog-to-digital conversion module of word signal, digital isolation module and the digital signal modulated for being modulated and demodulating to data signal
Demodulation module；Analog-to-digital conversion module input is connected with telephone wire；Digital isolation module output end demodulates with digital signal modulated
The input connection of module；Digital signal modulated demodulation module is connected by UART interface with control MCU；
Also include the RECIEVE modules for speech play, for the MIC modules of speech sample and two amplification modules；Wherein
One amplification module amplifies for audio, and another amplification module is used to amplify the signal of microphone collection；Control MCU passes through
DAC concatenates with one of amplification module and RECIEVE modules successively；Control MCU by ADC successively with another amplification module
Concatenated with MIC modules；
Also include being connected with control MCU respectively is used to read and write the SD card interface for the user file for storing transmission to be encrypted, is used for
Copy key, charging or as the expanding USB interface for accessing user file transmission card and for showing and operating secrecy terminal
LCD buttons.
2. the quantal data terminal according to claim 1 applied to PSTN public networks, it is characterised in that：The control MCU
For STM32F103VE series processors.
3. the quantal data terminal according to claim 1 or 2 applied to PSTN public networks, it is characterised in that：The voice
Processing MCU is STM32F205RE series processors.
4. the quantal data terminal according to claim 3 applied to PSTN public networks, it is characterised in that：SRAM and used
Key is deleted, and power down key is deleted.
5. the quantal data terminal according to claim 4 applied to PSTN public networks, it is characterised in that：At described and voice
The SRAM and key SD card for managing MCU connections wipe mode in key crushing with hardware, and used storage region is wiped, and writes
Upper new pseudo random number, used key are unreducible.
6. the quantal data terminal according to claim 5 applied to PSTN public networks, it is characterised in that：External USB mouth is not
Key SD card can be accessed, and read operation is deleted in external access interface is supplied to, SD card, which can only be write, to be read.
7. the quantal data terminal according to claim 6 applied to PSTN public networks, it is characterised in that：Open to user's
File transmission card and key SD card are SDHC cards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510563255.3A CN105071933B (en) | 2015-09-07 | 2015-09-07 | Quantal data terminal applied to PSTN public networks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510563255.3A CN105071933B (en) | 2015-09-07 | 2015-09-07 | Quantal data terminal applied to PSTN public networks |
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| CN105071933A CN105071933A (en) | 2015-11-18 |
| CN105071933B true CN105071933B (en) | 2018-02-06 |
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| CN201510563255.3A Active CN105071933B (en) | 2015-09-07 | 2015-09-07 | Quantal data terminal applied to PSTN public networks |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107306248B (en) * | 2016-04-19 | 2023-04-28 | 广东国盾量子科技有限公司 | Optical quantum switch and communication method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196425A (en) * | 2011-07-01 | 2011-09-21 | 安徽量子通信技术有限公司 | Quantum-key-distribution-network-based mobile encryption system and communication method thereof |
| CN103051444A (en) * | 2012-12-31 | 2013-04-17 | 安徽问天量子科技股份有限公司 | Quantum security digital terminal applied to PSTN (Public Switched Telephone Network) |
| CN203859823U (en) * | 2014-03-28 | 2014-10-01 | 北京广域量子通信技术有限公司 | Quantum encrypted video conference terminal and system |
| CN204392484U (en) * | 2015-02-06 | 2015-06-10 | 长春大学 | A kind of quantum key encryption wireless intercom device |
| CN204967836U (en) * | 2015-09-07 | 2016-01-13 | 安徽问天量子科技股份有限公司 | Be applied to volume subdata terminal of PSTN public network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2883313C (en) * | 2012-08-30 | 2020-06-16 | Los Alamos National Security, Llc | Multi-factor authentication using quantum communication |
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- 2015-09-07 CN CN201510563255.3A patent/CN105071933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196425A (en) * | 2011-07-01 | 2011-09-21 | 安徽量子通信技术有限公司 | Quantum-key-distribution-network-based mobile encryption system and communication method thereof |
| CN103051444A (en) * | 2012-12-31 | 2013-04-17 | 安徽问天量子科技股份有限公司 | Quantum security digital terminal applied to PSTN (Public Switched Telephone Network) |
| CN203859823U (en) * | 2014-03-28 | 2014-10-01 | 北京广域量子通信技术有限公司 | Quantum encrypted video conference terminal and system |
| CN204392484U (en) * | 2015-02-06 | 2015-06-10 | 长春大学 | A kind of quantum key encryption wireless intercom device |
| CN204967836U (en) * | 2015-09-07 | 2016-01-13 | 安徽问天量子科技股份有限公司 | Be applied to volume subdata terminal of PSTN public network |
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Address after: 241003 No. 12, Zhanghe Road, hi tech Zone, Anhui, Wuhu Applicant after: Anhui Asky Quantum Technology Co., Ltd. Address before: 241002 Anhui science and technology innovation public service center, Wuhu national hi tech Zone, Yijiang Applicant before: Anhui Asky Quantum Technology Co., Ltd. |
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