CN104125071A - Communication method, communication system and communication terminal - Google Patents
Communication method, communication system and communication terminal Download PDFInfo
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- CN104125071A CN104125071A CN201410376706.8A CN201410376706A CN104125071A CN 104125071 A CN104125071 A CN 104125071A CN 201410376706 A CN201410376706 A CN 201410376706A CN 104125071 A CN104125071 A CN 104125071A
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Abstract
The invention discloses a communication method, a communication system and a communication terminal. The communication method includes that a talking connection is established among at least three communication terminals, and each communication terminal is provided with a public key and a private key, wherein one communication terminal is used for acquiring voice information, encrypting the voice information by the public keys of other communication terminals and transmitting the voice information, and the other communication terminals are used for receiving the voice information and decrypting the voice information by the local private keys; plaintext information can be acquired by correctly decrypting the voice information when the private keys and the public keys are in match, otherwise, the plaintext information cannot be acquired. The communication method, the communication system and the communication terminal have the advantage that a function of point-to-point private communication in a multi-user communication process can be realized.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of communication means, system and communication terminal.
Background technology
Existing communication terminal has many people call function, can set up many people's calls with other a plurality of terminals, in many people communication process, although each terminal use is positioned at different places, but each terminal use's the content of speaking, other each terminal use can hear, is therefore particularly suitable for videoconference.
In many people communication process, some terminal uses may want, with another terminal use, some problems are discussed privately, in order to avoid affect other terminal use or prevent that other terminal use from having heard private information.Yet existing many people call method still can not realize this point, in the prior art, still can not in many people communication process, realize point-to-point secret call, cannot meet user's demand.
Summary of the invention
Main purpose of the present invention is to provide a kind of communication means, system and communication terminal, is intended to realize in many people communication process the function of point-to-point secret call, meets consumers' demand.
To achieve these objectives, the present invention proposes a kind of communication means, comprises step:
At least three communication terminals are set up call and are connected, and each communication terminal has a PKI and a private key;
Wherein a communication terminal gathers voice messaging, and is sent after described voice messaging being encrypted with the PKI of other communication terminal;
Other communication terminal receives described voice messaging, and with the private key of the machine, the described voice messaging after encrypting is decrypted.
Preferably, described PKI and private key are fixed key, and the PKI of other communication terminal and the private key of the machine have prestored in each communication terminal.
Preferably, described PKI and private key are random key, and the step that described at least three communication terminals are set up call connection also comprises afterwards:
A random PKI and the private key of generating of each communication terminal, and mutually exchange PKI separately.
Preferably, the described PKI with other communication terminal is sent and is comprised after described voice messaging is encrypted:
From other communication terminal, select a communication terminal;
PKI with the communication terminal selected is encrypted described voice messaging;
Send the described voice messaging after encrypting.
The present invention proposes a kind of communication system simultaneously, comprise that at least three have been set up the communication terminal that call connects, and each communication terminal has a PKI and a private key, described communication terminal is during as transmitting terminal, be used for gathering voice messaging, and sent after described voice messaging being encrypted with the PKI of other communication terminal; Described communication terminal during as receiving terminal, for receiving speech information, and is decrypted the voice messaging after encrypting with the private key of the machine.
Preferably, described PKI and private key are fixed key, and the PKI of other communication terminal and the private key of the machine have prestored in each communication terminal.
Preferably, described PKI and private key are random key, set up and converse after connection, and a random PKI and the private key of generating of each communication terminal, and mutually exchange PKI separately.
Preferably, described communication terminal is during as transmitting terminal, for: from other communication terminal, select a communication terminal, with the PKI of the communication terminal selected, described voice messaging is encrypted, send the described voice messaging after encrypting.
The present invention also proposes a kind of communication terminal, comprises memory module, voice acquisition module, encryption and decryption module and communication module, wherein:
Memory module, for storing the PKI of other terminal and the private key of the machine;
Voice acquisition module, for gathering voice messaging;
Encryption and decryption module, is encrypted the voice messaging collecting for the PKI with other communication terminal, with the private key of the machine, the encrypted speech information receiving is decrypted;
Communication module, is connected for setting up call with other communication terminal, and transmission and receiving speech information.
Preferably, described PKI and private key are fixed key, and described memory module is used for: the PKI of other communication terminal that prestores and the private key of the machine.
Preferably, described PKI and private key are random key, and described communication terminal also comprises generation module, its for: setting up after call connects, generate at random a PKI and a private key, and with other communication terminal exchange PKI separately.
Preferably, described encryption and decryption module is used for: from other communication terminal, select a communication terminal, with the PKI of the communication terminal selected, the voice messaging gathering is encrypted.
A kind of communication means provided by the present invention, adopt the cipher mode of asymmetric cryptographic key, for each communication terminal distributes a key pair that comprises PKI and private key, arbitrary communication terminal is during as transmitting terminal, after being encrypted voice messaging, PKI that all can other arbitrary communication terminal sent, other communication terminal is decrypted encrypted speech information with the private key of the machine, if matching, private key and PKI can correctly decipher acquisition cleartext information, otherwise cannot obtain cleartext information, thereby realized the function of point-to-point secret call in many people communication process, and without handoff calls link, therefore can not cause conversation delay.
Accompanying drawing explanation
Fig. 1 is the flow chart of communication means the first embodiment of the present invention;
Fig. 2 is the flow chart of communication means the second embodiment of the present invention;
Fig. 3 is the structured flowchart that communication system of the present invention is unified embodiment;
Fig. 4 is the structured flowchart of communication terminal the first embodiment of the present invention;
Fig. 5 is the structured flowchart of communication terminal the second embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The communication means of the present embodiment is applicable to many people's calls, is particularly useful for the scene of many people videoconference.
Referring to Fig. 1, communication means the first embodiment of the present invention is proposed, described communication means comprises the following steps:
Step S101: the difference private key of pre-stored the machine and the PKI of all the other two terminals in communication terminal A, B, C
The present embodiment be take three communication terminals and is conversed as example simultaneously.Wherein, communication terminal A, B and C have allocated fixed key pair in advance, comprise PKI and private key, and public key publication is given other communication terminal, and for encrypting, private key the machine is preserved, and for deciphering, i.e. the present invention adopts asymmetric-key encryption system.If the PKI of communication terminal A is PA, private key is SA; The PKI of communication terminal B is PB, and private key is SB; The PKI of communication terminal C is PC, and private key is SC.The private key SA of the machine and PKI PB and the PC of all the other two terminals in communication terminal A, have been stored; The private key SB of the machine and PKI PA and the PC of all the other two terminals in communication terminal B, have been stored; The private key SC of the machine and PKI PA and the PB of all the other two terminals in communication terminal C, have been stored.
Step S102: communication terminal A, B, C set up call and connect
Step S103: communication terminal A gathers voice messaging, and with the PKI of communication terminal B, voice messaging is encrypted
Concrete, communication terminal A is during as transmitting terminal, according to user's operational order, as selected communication terminal B by the image of pressing specific keys or click a certain terminal use in video calling from communication terminal B and C, and with the PKI PB of communication terminal B, voice messaging is encrypted.
Step S104: communication terminal A sends the voice messaging after encrypting
Because communication terminal A, B, C three have set up call, connect, so communication terminal A sends the voice messaging after encrypting to communication terminal B and C simultaneously.
Step S105: communication terminal B receives the voice messaging after encrypting, and with the private key of the machine, this voice messaging is decrypted
Communication terminal B is decrypted the voice messaging after encrypting with the private key SB of the machine, obtains cleartext information.Meanwhile, communication terminal C receives after the voice messaging after encryption, also can utilize the private key SC of the machine to be decrypted this voice messaging, but owing to not mating with encryption key PB, therefore cannot successfully decipher and obtains cleartext information.Thereby the function that has realized secret call between two in many people communication process, without handoff calls link, can not cause conversation delay.
In like manner, three communication terminals can adopt the cipher mode of above-mentioned asymmetric cryptographic key system, realize arbitrarily call separately between two.
Referring to Fig. 2, communication means the second embodiment of the present invention is proposed, described communication means comprises the following steps:
Step S201: communication terminal A, B, C, D set up call and connect
The present embodiment be take four communication terminals and is conversed as example simultaneously.
Step S202: communication terminal A, B, C, D be a random PKI and the private key of generating respectively
Set up after call connection, four communication terminals generate respectively a key pair at random according to default random code, comprise PKI and private key.If the PKI of communication terminal A is PA, private key is SA; The PKI of communication terminal B is PB, and private key is SB; The PKI of communication terminal C is PC, and private key is SC; The PKI of communication terminal D is PD, and private key is SD.
Step S203: communication terminal A, B, C, D exchange PKI separately mutually
Each communication terminal is outwards issued respectively PKI separately, and is stored after receiving the PKI of other communication terminal.Finally, the private key SA of the machine and PKI PB, PC and the PD of its excess-three terminal in communication terminal A, have been stored; The private key SB of the machine and PKI PA, PC and the PD of its excess-three terminal in communication terminal B, have been stored; The private key SC of the machine and PKI PA, PB and the PD of its excess-three terminal in communication terminal C, have been stored; The private key SD of the machine and PKI PA, PB and the PC of its excess-three terminal in communication terminal D, have been stored.
Step S204: communication terminal D gathers voice messaging, and with the PKI of communication terminal C, voice messaging is encrypted
Concrete, communication terminal D is during as transmitting terminal, according to user's operational order, as selected communication terminal C by the image of pressing specific keys or click a certain terminal use in video calling from communication terminal A, B and C, and with the PKI PC of communication terminal C, voice messaging is encrypted.
Step S205: communication terminal D sends the voice messaging after encrypting
Because communication terminal A, B, C, D have set up call, connect, so communication terminal D sends the voice messaging after encrypting to communication terminal A, B and C simultaneously.
Step S206: communication terminal C receives the voice messaging after encrypting, and with the private key of the machine, this voice messaging is decrypted
Communication terminal C is decrypted the voice messaging after encrypting with the private key SC of the machine, obtains cleartext information.Meanwhile, communication terminal A and B receive after the voice messaging after encryption, also can utilize respectively the private key SA of the machine and SB to be decrypted this voice messaging, but owing to not mating with encryption key PC, therefore cannot successfully decipher and obtain cleartext information.In like manner, four communication terminals can adopt the cipher mode of above-mentioned asymmetric cryptographic key system, realize arbitrarily call separately between two.
The key of the present embodiment to be set up call connect after random generation, without being pre-stored in communication terminal before call, so external communications terminals can add many people's calls at any time, and in many people communication process, realizes point-to-point secret call.
When communication terminal need to send to voice messaging all communication terminals of setting up call connection, the voice messaging gathering is not encrypted, directly outwards send.Or, in order to prevent that dialog context from leaking, also can utilize public keys to be encrypted, other communication terminal utilizes public keys to be decrypted.
Referring to Fig. 3, propose communication system of the present invention and unify embodiment, described communication system comprises communication terminal 1～communication terminal n, and n is more than or equal to 3, each communication terminal is set up call and is connected, and each communication terminal has a key pair, comprises PKI and private key.
When communication terminal is during as transmitting terminal, for gathering voice messaging, and sent after the voice messaging gathering being encrypted with the PKI of other communication terminal.Concrete, communication terminal is according to user's operational order, as selected a communication terminal by the image of pressing specific keys or click a certain terminal use in video calling from other communication terminal, and with the PKI of the communication terminal selected, voice messaging is encrypted, then send the voice messaging after encrypting.
When communication terminal is during as receiving terminal, for receiving speech information, and with the private key of the machine, the voice messaging after encrypting is decrypted, obtain cleartext information.
In certain embodiments, PKI and private key are fixed key, and the PKI of other communication terminal and the private key of the machine have prestored in each communication terminal.Concrete, suppose that communication system comprises three communication terminals, be respectively communication terminal 1,2 and 3, each communication terminal has been allocated fixed key pair in advance, comprises PKI and private key, and public key publication is given other communication terminal, for encrypting, private key the machine is preserved, and for deciphering, i.e. the present invention adopts asymmetric-key encryption system.If the PKI of communication terminal 1 is P1, private key is S1; The PKI of communication terminal 2 is P2, and private key is S2; The PKI of communication terminal 3 is P3, and private key is S3.The private key S1 of the machine and PKI P2 and the P3 of all the other two terminals in communication terminal 1, have been stored; The private key S2 of the machine and PKI P1 and the P3 of all the other two terminals in communication terminal 2, have been stored; The private key S3 of the machine and PKI P1 and the P2 of all the other two terminals in communication terminal 3, have been stored.
In further embodiments, PKI and private key are random key, set up and converse after connection, and a random PKI and the private key of generating of each communication terminal, and mutually exchange PKI separately.Concrete, suppose that communication system comprises four communication terminals, be respectively communication terminal 1,2,3 and 4, to set up after call connection, four communication terminals, according to the random key pair that generates of default random code difference, comprise PKI and private key.If the PKI of communication terminal 1 is P1, private key is S1; The PKI of communication terminal 2 is P2, and private key is S2; The PKI of communication terminal 3 is P3, and private key is S3; The PKI of communication terminal 4 is P4, and private key is S4.Each communication terminal is outwards issued respectively PKI separately, and is stored after receiving the PKI of other communication terminal.Finally, the private key S1 of the machine and PKI P2, P3 and the P4 of its excess-three terminal in communication terminal 1, have been stored; The private key S2 of the machine and PKI P1, P3 and the P4 of its excess-three terminal in communication terminal 2, have been stored; The private key S3 of the machine and PKI P1, P2 and the P4 of its excess-three terminal in communication terminal 3, have been stored; The private key S4 of the machine and PKI P1, P2 and the P3 of its excess-three terminal in communication terminal 4, have been stored.
It should be noted that, the technical characterictic in said method embodiment is all corresponding applicable at native system, no longer repeats here.
Accordingly, communication system of the present invention, adopt the cipher mode of asymmetric cryptographic key, for each communication terminal distributes a key pair that comprises PKI and private key, arbitrary communication terminal is during as transmitting terminal, after being encrypted voice messaging, PKI that all can other arbitrary communication terminal sent, other communication terminal is decrypted encrypted speech information with the private key of the machine, if matching, private key and PKI can correctly decipher acquisition cleartext information, otherwise cannot obtain cleartext information, thereby realized the function of point-to-point secret call in many people communication process, and without handoff calls link, therefore can not cause conversation delay.
Referring to Fig. 4, communication terminal the first embodiment of the present invention is proposed, described communication terminal comprises memory module, voice acquisition module, encryption and decryption module and communication module.
Memory module: for the PKI of pre-stored other terminal and the private key of the machine.
The present invention adopts asymmetric-key encryption system to be encrypted, and communication terminal has a key pair, comprises PKI and private key, and public key publication is given other communication terminal, and for encrypting, private key the machine is preserved, for deciphering.PKI in the present embodiment and private key are fixed key, the pre-stored PKI of other terminal and the private key of the machine in memory module.
Voice acquisition module: for gathering voice messaging, and send to encryption and decryption module.
Encryption and decryption module: for the PKI with other communication terminal, the voice messaging collecting is encrypted, the voice messaging after encrypting is sent to communication terminal; Encrypted speech information communication module being received with the private key of the machine is decrypted.
Concrete, when outside transmission information, encryption and decryption module is according to user's operational order, as selected a communication terminal by the image of pressing specific keys or click a certain terminal use in video calling from other communication terminal, and with the PKI of the communication terminal selected, voice messaging is encrypted.When receiving encrypted speech information, encryption and decryption module is decrypted with the private key of the machine.
Communication module: for setting up call with other communication terminal, be connected, and transmission and receiving speech information.When the voice messaging receiving is enciphered message, send to encryption and decryption module to be decrypted operation.Or whether the voice messaging no matter receiving is enciphered message, all sends to encryption and decryption module, by encryption and decryption module, whether this information is encrypted and judged, and then select whether to be decrypted operation.
Thereby, when communication terminal is in many people talking link during as transmitting terminal, can voice messaging be encrypted with the PKI of other arbitrary communication terminal in the talking link prestoring, make to only have this communication terminal can crack the voice messaging after encryption, realized point-to-point transmission voice messaging when many people converse; When as receiving terminal, the private key with the machine is decrypted encrypted speech information, if this encrypted speech information is public key encryption by the machine while forming, the machine just can correctly crack, and realizes point-to-point receiving speech information.Finally realize the function of point-to-point secret call in many people's calls, and without handoff calls link, can not cause conversation delay.
Referring to Fig. 5, communication terminal the second embodiment of the present invention is proposed, the difference of the present embodiment and a upper embodiment is to have increased by a generation module, this generation module is used for: after being connected with other communication terminal foundation call, according to the random key pair that generates of default random code, this key, to comprising PKI and private key, is stored in memory module by the private key of generation, and exchanging PKI separately with other communication terminal, the PKI of other communication terminal that exchange is obtained is stored in memory module.
Thereby, the communication terminal of the present embodiment is without the PKI of other terminal that prestores before call and the private key of the machine, but set up call connect after random generation, therefore can add at any time arbitrarily many people link of conversing, and in many people communication process, realize point-to-point secret and converse.
One of ordinary skill in the art will appreciate that, realizing all or part of step in above-described embodiment method can control relevant hardware by program and complete, described program can be stored in a computer read/write memory medium, and described storage medium can be ROM/RAM, disk, CD etc.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (12)
1. a communication means, is characterized in that, comprises step:
At least three communication terminals are set up call and are connected, and each communication terminal has a PKI and a private key;
Wherein a communication terminal gathers voice messaging, and is sent after described voice messaging being encrypted with the PKI of other communication terminal;
Other communication terminal receives described voice messaging, and with the private key of the machine, the described voice messaging after encrypting is decrypted.
2. communication means according to claim 1, is characterized in that, described PKI and private key are fixed key, and the PKI of other communication terminal and the private key of the machine have prestored in each communication terminal.
3. communication means according to claim 1, is characterized in that, described PKI and private key are random key, and the step that described at least three communication terminals are set up call connection also comprises afterwards:
A random PKI and the private key of generating of each communication terminal, and mutually exchange PKI separately.
4. according to the communication means described in claim 1-3 any one, it is characterized in that, the described PKI with other communication terminal is sent and is comprised after described voice messaging is encrypted:
From other communication terminal, select a communication terminal;
PKI with the communication terminal selected is encrypted described voice messaging;
Send the described voice messaging after encrypting.
5. a communication system, it is characterized in that, comprise that at least three have been set up the communication terminal that call connects, and each communication terminal has a PKI and a private key, described communication terminal is during as transmitting terminal, be used for gathering voice messaging, and sent after described voice messaging being encrypted with the PKI of other communication terminal; Described communication terminal during as receiving terminal, for receiving speech information, and is decrypted the voice messaging after encrypting with the private key of the machine.
6. communication system according to claim 5, is characterized in that, described PKI and private key are fixed key, and the PKI of other communication terminal and the private key of the machine have prestored in each communication terminal.
7. communication system according to claim 5, is characterized in that, described PKI and private key are random key, set up and converse after connection, and a random PKI and the private key of generating of each communication terminal, and mutually exchange PKI separately.
8. according to the communication system described in claim 5-7 any one, it is characterized in that, described communication terminal is during as transmitting terminal, be used for: from other communication terminal, select a communication terminal, PKI with the communication terminal selected is encrypted described voice messaging, sends the described voice messaging after encrypting.
9. a communication terminal, is characterized in that, comprises memory module, voice acquisition module, encryption and decryption module and communication module, wherein:
Memory module, for storing the PKI of other terminal and the private key of the machine;
Voice acquisition module, for gathering voice messaging;
Encryption and decryption module, is encrypted the voice messaging collecting for the PKI with other communication terminal, with the private key of the machine, the encrypted speech information receiving is decrypted;
Communication module, is connected for setting up call with other communication terminal, and transmission and receiving speech information.
10. communication terminal according to claim 9, is characterized in that, described PKI and private key are fixed key, and described memory module is used for: the PKI of other communication terminal that prestores and the private key of the machine.
11. communication terminals according to claim 9, is characterized in that, described PKI and private key are random key, described communication terminal also comprises generation module, its for: setting up after call connects, generate at random a PKI and a private key, and with other communication terminal exchange PKI separately.
12. according to the communication terminal described in claim 9-12 any one, it is characterized in that, described encryption and decryption module is used for: from other communication terminal, select a communication terminal, with the PKI of the communication terminal selected, the voice messaging gathering is encrypted.
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| CN201410376706.8A CN104125071B (en) | 2014-08-01 | 2014-08-01 | Communication means, system and communication terminal |
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| CN201410376706.8A CN104125071B (en) | 2014-08-01 | 2014-08-01 | Communication means, system and communication terminal |
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| CN104601818A (en) * | 2015-01-26 | 2015-05-06 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for switching operating systems in communication process |
| CN105915522A (en) * | 2016-04-20 | 2016-08-31 | 广州市昇博电子科技有限公司 | Remote high-fidelity voice collection method for digital conference |
| WO2017063438A1 (en) * | 2015-10-15 | 2017-04-20 | 中兴通讯股份有限公司 | Voice encryption method, system and apparatus |
| CN106856606A (en) * | 2015-12-08 | 2017-06-16 | 中兴通讯股份有限公司 | Communication means, communication system and mobile terminal |
| CN108270904A (en) * | 2016-12-30 | 2018-07-10 | 展讯通信（上海）有限公司 | The method, apparatus of safety call and mostly logical terminal are realized in multi-party call |
| CN109327463A (en) * | 2018-11-14 | 2019-02-12 | 深圳市云歌人工智能技术有限公司 | The storage and confirmation method of personal information, system and storage medium |
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| CN104601818A (en) * | 2015-01-26 | 2015-05-06 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for switching operating systems in communication process |
| WO2017063438A1 (en) * | 2015-10-15 | 2017-04-20 | 中兴通讯股份有限公司 | Voice encryption method, system and apparatus |
| CN106856606A (en) * | 2015-12-08 | 2017-06-16 | 中兴通讯股份有限公司 | Communication means, communication system and mobile terminal |
| CN105915522A (en) * | 2016-04-20 | 2016-08-31 | 广州市昇博电子科技有限公司 | Remote high-fidelity voice collection method for digital conference |
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| CN109327463A (en) * | 2018-11-14 | 2019-02-12 | 深圳市云歌人工智能技术有限公司 | The storage and confirmation method of personal information, system and storage medium |
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| CN104125071B (en) | 2016-03-30 |
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Address after: A District No. 9018 Han innovation building in Nanshan District high tech Zone in Shenzhen city of Guangdong Province, North Central Avenue, 518000 floor 10 Applicant after: Nubian Technologies Ltd. Address before: A District No. 9018 Han innovation building in Nanshan District high tech Zone in Shenzhen city of Guangdong Province, North Central Avenue, 518000 floor 10 Applicant before: Shenzhen ZTE Mobile Tech Co., Ltd. |
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