CN204836595U - Cell -phone with pronunciation encryption function - Google Patents
Cell -phone with pronunciation encryption function Download PDFInfo
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- CN204836595U CN204836595U CN201520683016.7U CN201520683016U CN204836595U CN 204836595 U CN204836595 U CN 204836595U CN 201520683016 U CN201520683016 U CN 201520683016U CN 204836595 U CN204836595 U CN 204836595U
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Abstract
The utility model discloses a cell -phone with pronunciation encryption function, cell -phone with pronunciation encryption function includes control module, synchronization signal encoder, synchronization signal decoder, pronunciation cryptographic module, display module and button module, synchronization signal encoder, synchronization signal decoder, pronunciation cryptographic module, display module and button module all with control module connects. The utility model discloses a cell -phone with pronunciation encryption function have strong security, synchronism high, use that the convenience is good, extensive applicability and low cost's characteristics.
Description
Technical field
The utility model relates to mobile communication equipment technical field, specifically refers to a kind of mobile phone with voice encryption function.
Background technology
In recent years, along with the development of mechanics of communication, mobile communication is more and more universal, and maintaining secrecy avoids leaking also more and more causes concern for how carrying out dialog context of thereupon bringing.In order to improve the function of keeping secret of mobile communication, the general mode adopting digital encryption mode and the customized mode of Virtual network operator, but all there is certain problem.
Adopt digital encryption mode by after voice encryption, transmitted by the voice channel (GSM, CDMA) of 2G, difficulty is larger, be difficult to successfully, main cause is: if the voice after encryption need deciphering after being received by the other side, and the prerequisite of successful decryption is that speech data content is kept intact and can not be had large change.But when in encrypted speech transmittance process, have passed through the process of the Code And Decode algorithm of GSM/CDMA network self, and these Code And Decode algorithms damage itself, therefore the speech data that receives of the other side and original encryption data are that great changes have taken place, and this change has different-effect in different time sections, it is impossible for therefore wanting to decipher and recovering former state.
In addition, this kind of mode utilizes data channel to carry out Transmission Encryption speech data, and first this mode is dialed with ordinary people and the custom process that receives calls has very large difference, uses and has a lot of inconvenience.Most importantly, fixing encryption key, once be grasped by the person of stealing secret information, will cause all calls to divulge a secret and all devices inefficacy, have to redesign.
If adopt the customized mode of telecommunication network operators, need to be connected with telecommunications group internal information centre, system can be examined SIM card number, phone number, unique fuselage identifying code, after only having three information all to meet, just can issue one and be similar to identifying code " secret key ", carry out calling and called function subsequently.The obvious too complex of this mode, is unfavorable for the popularization of product.
Utility model content
The purpose of this utility model is to provide a kind of mobile phone with voice encryption function, the feature that high, the easy to use property of the strong security had, synchronism is good, applicability is wide and with low cost.
The utility model can be achieved through the following technical solutions:
The utility model discloses a kind of mobile phone with voice encryption function, comprise control module, synchronous signal encoder, synchronization signal decoder, voice encryption module and button management circuit, described synchronous signal encoder, synchronization signal decoder, voice encryption module, button management circuit are all connected with described control module.Described voice encryption module realizes encrypting the analog voice of dialog context; Described synchronization signal decoder and synchronous signal encoder realize the synchronous crypto-operation process of mobile phone; The switching that described button management circuit opens frequency realizes switching ciphering process.In actual use, after call is opened, first analog voice encryption is realized by voice encryption module, the content of then being spoken to self by synchronous signal encoder is formed synchronizing signal and carries out synchronous crypto-operation transmission, and synchronization signal decoder carries out synchronous decoding output the synchronizing signal of the dialog context from the other side received.In synchronous crypto-operation process, according to encryption needs, opened by button management circuit and switch ciphering process, switch frequency in real time, after frequency switches, carry out again real-time synchronization encryption according to synchronous crypto-operation process, ensure the fail safe of dialog context further.And in the process of encryption, real-time, synchronism is high, effectively avoids the impact that time irreversibility causes dialog context.
Preferably, described in there is voice encryption function mobile phone also comprise SPK horn module, phonetic entry MIC module, described SPK horn module, phonetic entry MIC module are connected with described control module simultaneously.By SPK horn module, can in real time decoded synchronizing signal be exported; By input MIC circuit, can in real time voice signal input in real time encode after form synchronizing signal and outwards transmit.
Preferably, described in there is voice encryption function mobile phone also comprise radio-frequency module and reception antenna, described radio-frequency module, reception antenna are all connected with described control module.Signal is launched by described radio-frequency module, arrives the other side's mobile phone by base station, and described reception antenna receives the signal of the other side by base station.
Preferably, the signal type of described synchronizing signal is DTMF, FSK or MSK.In the process that reality uses, can need to select different signal types flexibly according to use.
Preferably, the chip model of described synchronous signal encoder is MT8880, and the chip signal of described synchronization signal decoder is MT8880 or MT88870.
Preferably, the mobile phone described in voice encryption function also comprises touch-screen, battery and camera.
The described speech ciphering method with the mobile phone of voice encryption function comprises following processing procedure;
A, analog voice are encrypted: after call starts, and communication two party just sends to the other side after respective voice having been carried out analog voice encryption by voice encryption module.Voice channel after encryption comprises two encrypted tunnels in logic: one is the passage issuing B deciphering from A encryption; Another issues the passage that A goes deciphering after B encryption.Voice in described two passages are respective independent transmission and reception, are also respective independent synchronization simultaneously; By adopting independent synchronization, the different time goes to complete separately synchronous working, can greatly improve secret ability like this.
B, synchronous crypto-operation: described in there is all built-in identical cryptographic algorithm of mobile phone of voice encryption function, the time that both sides synchronously start by calculating next time initiation separately as the synchronous promoter of two passages.The transmitting terminal of two passages is responsible for initiating synchronizing process, and when arriving the synchronous time started, transmitting terminal is sending by synchronous signal encoder synchronizing signal based on audio frequency; After receiving terminal receives signal, identify, control module determines whether required synchronizing signal, if synchronization signal decoder decipherment algorithm uses key parameter to be switched to the value of the other side's requirement.Complete the synchronous of a voice channel, subsequently received voice use new encryption key decryption.Adopt the signal based on audio frequency, directly utilize the transmission of mobile phone mobile communication network, avoid by filtration such as the encryption algorithm of GSM network or cdma network etc. or partial destruction and cause recipient's None-identified and then generation to cause the situation of synchronization failure.By synchronous crypto-operation process, complete the synchronous of a voice channel, subsequently received voice can use new encryption key decryption, can not cause the decryption error of sound completely.
C, dynamic encryption: open dynamic encryption process by button management circuit as required, it is also the process performing above-mentioned b step that button switches the synchronous of passage in dynamic encryption process, analog voice encryption frequency is ceaselessly switched in call, in call, ceaselessly can switch analog voice encryption frequency, and various decryption error can not be brought along with network delay and passage of time.
Preferably, described analog voice encryption realizes based on scramble mode, first filter is used to be N number of sub-band by the cutting of speech audio scope, when selecting one of them cut-off as encryption frequency, using this frequency as center frequency point, the frequency of other frequency is all modified to the frequency of the symmetrical frequency band consistent with center frequency point frequency absolute difference, then uses mixer or adder calculator that all sub-bands are mixed again; After recipient receives encrypted speech, according to same principle, again by the frequency of scramble frequency being all modified to the frequency of the symmetrical frequency band consistent with center frequency point frequency absolute difference.
Preferably, described dynamic encryption adopts the mode of scramble to realize, first filter is used to be N number of sub-band by the cutting of speech audio scope, when selecting one of them cut-off as encryption frequency according to the time parameter of communication, using this frequency as center frequency point, the frequency of other frequency is all modified to the frequency of the symmetrical frequency band consistent with center frequency point frequency absolute difference, then use mixer or adder calculator that all sub-bands are mixed again, after recipient receives encrypted speech, according to same principle and time parameter, find correct center frequency point, again by the frequency of scramble frequency being all modified to the frequency of the symmetrical frequency band consistent with center frequency point frequency absolute difference, namely voice are returned to normal state.
Preferably, described voice channel be the GSM network based on 2G communication or WCDMA, the CDMA2000 based on 3G communication, TD-SCDMA network or based on 4G communication TD-LTE, FDD-LTE network voice channel.
Preferably, described cryptographic algorithm comprises close 3 algorithms of state and hash algorithm, and integrated many algorithms, switches in real time, ensures the function of keeping secret with the mobile phone of voice encryption function further.
The beneficial effects of the utility model are:
The first, strong security, the described mobile phone with voice encryption function uses the speech ciphering method simultaneously comprising analog voice encryption, synchronous crypto-operation and dynamic encryption, and multiple cipher mode is integrated, and different cryptographic algorithm switches, real-time switching frequency, effectively ensure that the confidentiality of dialog context;
The second, synchronism is high, the described speech ciphering method with the mobile phone of voice encryption function passes through to adopt synchronous signal encoder and synchronization signal decoder, realize two logical channel Signal coding deciphering and decoding, frequency switches in real time, synchronousness is high, effectively ensure that the synchronism in communication process.
Accompanying drawing explanation
Fig. 1 is a kind of theory diagram with the mobile phone of voice encryption function of the utility model.
Fig. 2 is a kind of flow chart with the speech ciphering method of the mobile phone of voice encryption function of the utility model.
Embodiment
The technical solution of the utility model is understood better in order to make those skilled in the art person, and enable above-mentioned purpose of the present utility model, feature and advantage become apparent more, below in conjunction with embodiment and embodiment accompanying drawing, the utility model product is described in further detail.
As shown in Figure 1, a kind of mobile phone with voice encryption function, the described mobile phone with voice encryption function comprises control module, synchronous signal encoder, synchronization signal decoder, voice encryption module, display module and key-press module, and described synchronous signal encoder, synchronization signal decoder, voice encryption module, display module are all connected with described control module with key-press module.
The described mobile phone with voice encryption function also comprises SPK horn module, phonetic entry MIC module, and described SPK horn module, phonetic entry MIC module are connected with described control module simultaneously.
The described mobile phone with voice encryption function also comprises radio-frequency module and reception antenna, and described radio-frequency module, reception antenna are all connected with described control module.The chip model of described synchronous signal encoder is MT8880, and the chip signal of described synchronization signal decoder is MT8880 or MT88870.
The described mobile phone with voice encryption function also comprises display touch-screen, battery and camera.
As shown in Figure 2, a kind of speech ciphering method being applied to the mobile phone with voice encryption function, comprises following processing procedure;
A, analog voice are encrypted: after call starts, and communication two party just sends to the other side after respective voice having been carried out analog voice encryption by voice encryption module.Voice channel after encryption comprises two encrypted tunnels in logic: one is the passage issuing B deciphering from A encryption; Another issues the passage that A goes deciphering after B encryption.Voice in described two passages are respective independent transmission and reception, are also respective independent synchronization simultaneously;
B, synchronous crypto-operation: described in there is all built-in identical cryptographic algorithm of mobile phone of voice encryption function, the time that both sides synchronously start by calculating next time initiation separately as the synchronous promoter of two passages.The transmitting terminal of two passages is responsible for initiating synchronizing process, and when arriving the synchronous time started, transmitting terminal is sending by synchronous signal encoder synchronizing signal based on audio frequency; After receiving terminal receives signal, identify, control module determines whether required synchronizing signal, if synchronization signal decoder decipherment algorithm uses key parameter to be switched to the value of the other side's requirement.Complete the synchronous of a voice channel, subsequently received voice use new encryption key decryption;
C, dynamic encryption: open dynamic encryption process by button management circuit as required, it is also the process performing above-mentioned b step that button switches the synchronous of passage in dynamic encryption process, ceaselessly switches analog voice encryption frequency in call.
Described analog voice encryption realizes based on scramble mode, first filter is used to be N number of sub-band by the cutting of speech audio scope, when selecting one of them cut-off as encryption frequency, using this frequency as center frequency point, the frequency of other frequency is all modified to the frequency of the symmetrical frequency band consistent with center frequency point frequency absolute difference, then uses mixer or adder calculator that all sub-bands are mixed again; After recipient receives encrypted speech, according to same principle, again by the frequency of scramble frequency being all modified to the frequency of the symmetrical frequency band consistent with center frequency point frequency absolute difference.
Described dynamic encryption adopts the mode of scramble to realize, first filter is used to be N number of sub-band by the cutting of speech audio scope, when selecting one of them cut-off as encryption frequency according to the time parameter of communication, using this frequency as center frequency point, the frequency of other frequency is all modified to the frequency of the symmetrical frequency band consistent with center frequency point frequency absolute difference, then use mixer or adder calculator that all sub-bands are mixed again, after recipient receives encrypted speech, according to same principle and time parameter, find correct center frequency point, again by the frequency of scramble frequency being all modified to the frequency of the symmetrical frequency band consistent with center frequency point frequency absolute difference, namely voice are returned to normal state.
Described voice channel be the GSM network based on 2G communication or WCDMA, the CDMA2000 based on 3G communication, TD-SCDMA network or based on 4G communication TD-LTE, FDD-LTE network voice channel.
Described cryptographic algorithm comprises close 3 algorithms of state and hash algorithm.
The signal type of described synchronizing signal is DTMF, FSK or MSK.
The embodiment of the above is better embodiment of the present utility model; not limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence change that all shapes according to the utility model, structure are done is all in protection range of the present utility model.
Claims (6)
1. one kind has the mobile phone of voice encryption function, it is characterized in that: comprise control module, synchronous signal encoder, synchronization signal decoder, voice encryption module, display module and key-press module, described synchronous signal encoder, synchronization signal decoder, voice encryption module, display module are all connected with described control module with key-press module.
2. the mobile phone with voice encryption function according to claim 1, it is characterized in that: described in there is voice encryption function mobile phone also comprise SPK horn module, phonetic entry MIC module, described SPK horn module, phonetic entry MIC module are connected with described control module simultaneously.
3. the mobile phone with voice encryption function according to claim 1, is characterized in that: described in there is voice encryption function mobile phone also comprise radio-frequency module and reception antenna, described radio-frequency module, reception antenna are all connected with described control module.
4. the mobile phone with voice encryption function according to claim 3, is characterized in that: the signal type of described synchronizing signal is DTMF, FSK or MSK.
5. the mobile phone with voice encryption function according to claim 3, is characterized in that: the chip model of described synchronous signal encoder is MT8880, and the chip signal of described synchronization signal decoder is MT8880 or MT88870.
6. the mobile phone with voice encryption function according to claim 1 ~ 5 any one, is characterized in that: described in there is voice encryption function mobile phone also comprise touch-screen, battery and camera.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520683016.7U CN204836595U (en) | 2015-09-06 | 2015-09-06 | Cell -phone with pronunciation encryption function |
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| CN201520683016.7U CN204836595U (en) | 2015-09-06 | 2015-09-06 | Cell -phone with pronunciation encryption function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330438A (en) * | 2016-10-25 | 2017-01-11 | 公安部第三研究所 | Initiative negotiation encryption analog voice communication method |
| CN112671981A (en) * | 2020-12-17 | 2021-04-16 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Method and equipment for preventing telephone from monitoring |
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2015
- 2015-09-06 CN CN201520683016.7U patent/CN204836595U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330438A (en) * | 2016-10-25 | 2017-01-11 | 公安部第三研究所 | Initiative negotiation encryption analog voice communication method |
| CN112671981A (en) * | 2020-12-17 | 2021-04-16 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Method and equipment for preventing telephone from monitoring |
| CN112671981B (en) * | 2020-12-17 | 2022-11-25 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Method and equipment for preventing telephone from monitoring |
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