CN101420689A - Mobile terminal and method for implementing encoding and decoding process of audio code stream - Google Patents
Mobile terminal and method for implementing encoding and decoding process of audio code stream Download PDFInfo
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- CN101420689A CN101420689A CNA2008102174765A CN200810217476A CN101420689A CN 101420689 A CN101420689 A CN 101420689A CN A2008102174765 A CNA2008102174765 A CN A2008102174765A CN 200810217476 A CN200810217476 A CN 200810217476A CN 101420689 A CN101420689 A CN 101420689A
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Abstract
The invention discloses a mobile terminal used for realizing the encrypting and decrypting of the audio code stream and a method thereof. An encrypting processing module and a baseband processing module are integrated in a processing unit so that the audio code stream required to be encrypted can be directly sent to the encrypting processing module from the processing unit and that the audio code stream decrypted by the encrypting processing module can be directly output to the baseband processing module. The realization type ensures that the audio code stream after encrypting process and decrypting process can not be illegally intercepted by any means; furthermore, by a key negotiation mechanism, the keys required by encrypting and decrypting must be gained by a key service center, thus improving the safety for encrypting process.
Description
Technical field
The present invention relates to audio frequency of mobile terminal code stream encryption and decryption treatment technology, comprise the audio code stream encryption and decryption technology of various modes communication terminals such as GSM, CDMA, WCDMA.
Background technology
Mobile communication has become one of important communication mode of terminal use, and the fail safe of mobile communication becomes the emphasis that people pay close attention to day by day.Because what the transmission of the signal between portable terminal and the base station was adopted is wireless communication signals, intercepted and monitor easily, so can portable terminal provides safe, communication reliably to seem and be even more important.
The patent No. is that 200520073103.7 Chinese patent has proposed a kind of portable terminal with unencryped word and encrypted word bilateral words function.This patent has adopted the scheme based on the multicore sheet, promptly in order to realize the encryption of audio code stream, has increased " encryption chip and processor ", and passes through the diverter switch of input/output port (GPIO) control encryption chip, realizes the selection of unencryped word and encrypted word.Though increase than the scheme that does not have encryption chip on the processing scheme security performance of this multicore sheet, this cipher mode is still attacked than being easier to very much.Main cause is: the first, because encryption chip separates with baseband processing chip, only need transform a little the connecting circuit between the two on the terminal, and just can obtain the unencrypted audio-frequency information, thus shielding encryption communication function; The second, this simple hardware encipher mode, cryptographic algorithm is more single, the audio-frequency information easy crack of encryption.
Summary of the invention
The present invention is directed to the low defective of prior art sound intermediate frequency communications security and proposed a kind of portable terminal and method that realizes that the audio code stream encryption and decryption is handled, making needs the audio code stream after encryption and the decryption processing can illegally not intercepted, thereby has influenced the fail safe of voice communication.The present invention can also further pass through key agreement mechanism in addition, improves the fail safe of cipher mode.
The present invention proposes a kind of portable terminal of realizing that the audio code stream encryption and decryption is handled, terminal comprises: baseband processing module, encryption and decryption processing module, Power Management Unit, Transmit Receive Unit, antenna element, and peripheral components, core thinking of the present invention is that encryption processing module and baseband processing module are integrated in the processing unit, and integration mode has three kinds: first kind is that baseband processing module and encryption and decryption processing module are integrated in the first integrated processing unit; Second kind is that baseband processing module, encryption and decryption processing module, Transmit Receive Unit are integrated in the second integrated processing unit; The third is that baseband processing module, encryption and decryption processing module, radio-frequency (RF) receiving and transmission module, Power Management Unit are integrated in the 3rd integrated processing unit.Wherein the encryption and decryption processing module links to each other with Transmit Receive Unit with baseband processing module respectively, is used for that the audio code stream that needs encryption and decryption to handle is carried out encryption and decryption and handles; The encrypted audio code stream that receives from Transmit Receive Unit is sent to baseband processing module through after the described encryption and decryption module decrypts, and the audio code stream to be encrypted that receives from baseband processing module is sent to Transmit Receive Unit through after the described encryption and decryption module encrypt.
Preferably, the encryption and decryption that can also adopt key agreement mechanism to carry out audio code stream is handled, and the encryption and decryption module also is used for generating key when the audio code stream encryption during realization, and key is uploaded to the cipher key service center; And when the audio code stream decryption processing, download key from the cipher key service center and carry out the deciphering of audio code stream.The encryption and decryption module can be carried out uploading and downloading of key information by way of short messages and cipher key service center when specific implementation.This note can be the note of encrypted transmission.
The invention allows for a kind of realization audio frequency of mobile terminal code stream encrypting and deciphering processing method, comprise following processing procedure:
1) baseband processing module output audio code stream is to the interior encryption and decryption module of integrated processing unit, the encryption and decryption module sends to Transmit Receive Unit after the input audio code stream is encrypted, and the audio code stream after Transmit Receive Unit will be encrypted outwards sends by RF-wise;
2) Transmit Receive Unit receives the audio code stream of encrypting, and this code stream is forwarded to the encryption and decryption module, and the encryption and decryption module is to encrypting the baseband processing unit that sends to after code stream is deciphered in the integrated processing unit, and baseband processing unit carries out Base-Band Processing to audio code stream.
Preferably, the encryption and decryption that can adopt key agreement mechanism to carry out audio code stream is handled, and the encryption and decryption module also generates key in the described step 1) when the audio code stream encryption, and key is uploaded to the cipher key service center; Described step 2) the encryption and decryption module is also carried out the deciphering of audio code stream from cipher key service center download key in.The encryption and decryption module can be carried out uploading and downloading of key information by way of short messages and cipher key service center.The mutual note at encryption and decryption module and cipher key service center can be the mutual note of encrypted transmission.
Because portable terminal and method that the realization audio code stream encryption and decryption that the present invention proposes is handled, owing to adopted encryption processing module and baseband processing module be integrated in the processing unit, make the audio code stream that needs to encrypt directly in processing unit, to be sent to encryption processing module, and the audio code stream after the encryption processing module deciphering directly outputs to baseband processing module, and this implementation need to have guaranteed the audio code stream after encryption and the decryption processing illegally to be intercepted by any way; By key agreement mechanism, encryption and decryption is handled needed key and all must be obtained by the cipher key service center, has improved the fail safe of encryption in addition.
Description of drawings
Fig. 1 is that the present invention realizes portable terminal preferred embodiment one system block diagram that the audio code stream encryption and decryption is handled;
Fig. 2 is that the present invention realizes the portable terminal preferred embodiment two system block diagram that the audio code stream encryption and decryption is handled;
Fig. 3 is that the present invention realizes portable terminal preferred embodiment three system block diagrams that the audio code stream encryption and decryption is handled;
Fig. 4 is that the present invention adopts key agreement mechanism to carry out the preferred embodiment schematic diagram of audio code stream encryption and decryption;
Fig. 5 is that the present invention realizes audio code stream encrypting and deciphering processing method preferred embodiment schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, and the present invention is described in detail to pass through specific embodiment.
Existing multicore sheet cipher processing method, owing to adopted independently encryption chip, only making need be to the terminal encryption function that circuit modification can shield terminal a little.The present invention mainly is exactly at this problem, adopts encryption processing module and baseband processing module are integrated in the processing unit, and this integrated processing unit can be a single chip architecture.
As three kinds the integration mode of Fig. 1-3, the first integrated processing unit among Fig. 1 is integrated baseband processing module and encryption and decryption processing module.The second integrated processing unit among Fig. 2 is integrated: baseband processing module, encryption and decryption processing module and Transmit Receive Unit.The 3rd integrated processing unit among Fig. 3 is integrated: baseband processing module, encryption and decryption processing module, radio-frequency (RF) receiving and transmission module and Power Management Unit.Wherein directly transmission alternately between baseband processing module and Transmit Receive Unit of ordinary audio code stream.The processing mode of encrypted audio code stream then needs the participation of encryption and decryption processing module.The encryption and decryption processing module links to each other with Transmit Receive Unit with baseband processing module respectively, the audio code stream that needs encryption and decryption to handle is carried out encryption and decryption handle.Comprise: the encrypted audio code stream that receives from Transmit Receive Unit is sent to baseband processing module through after the described encryption and decryption module decrypts, and the audio code stream to be encrypted that receives from baseband processing module is sent to Transmit Receive Unit through after the described encryption and decryption module encrypt.
Key agreement mechanism principle figure as shown in Figure 4, encryption and decryption processing module in cipher key service center and the calling and called terminal is finished the distribution processor of key, distribution processor can adopt short message mode to carry out, and can carry out encrypted transmission to note in order to ensure the fail safe of key.Carry out network transparent transmission mechanism between the base station under the calling and called, realize the mutual of calling and called audio code stream.In the calling and called end side audio code stream being carried out encryption and decryption handles.
Audio code stream encrypting and deciphering processing method as shown in Figure 5.Audio code stream to be encrypted is sent to the encryption and decryption processing module by baseband processing module and carries out encryption, and the audio code stream after the encryption is sent to Transmit Receive Unit, and sends by antenna element.Be forwarded to the encryption and decryption processing module after audio code stream to be deciphered is received by Transmit Receive Unit and be decrypted processing, the audio code stream after the decryption processing is sent to baseband processing module and carries out Base-Band Processing.Because baseband processing module and encryption and decryption processing module are two submodules of integrated processing unit, the audio code stream that the outer signal of integrated processing unit has only the audio code stream after the encryption and do not decipher, so audio code stream is difficult for being cracked.The encryption and decryption module also generates key when the audio code stream encryption in addition, and key is uploaded to the cipher key service center; When decryption processing, the encryption and decryption module is also downloaded key and is carried out the deciphering of audio code stream from the cipher key service center.The encryption and decryption module can be carried out uploading and downloading of key information by way of short messages and cipher key service center.The mutual note at encryption and decryption module and cipher key service center can be the mutual note of encrypted transmission.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a portable terminal of realizing that the audio code stream encryption and decryption is handled is characterized in that described terminal comprises: the first integrated processing unit, Power Management Unit, Transmit Receive Unit, antenna element, and peripheral components; The described first integrated processing unit comprises: baseband processing module and encryption and decryption processing module, and described encryption and decryption processing module links to each other with Transmit Receive Unit with baseband processing module respectively, is used for that the audio code stream that needs encryption and decryption to handle is carried out encryption and decryption and handles; The encrypted audio code stream that receives from Transmit Receive Unit is sent to baseband processing module through after the described encryption and decryption module decrypts, and the audio code stream to be encrypted that receives from baseband processing module is sent to Transmit Receive Unit through after the described encryption and decryption module encrypt.
2. a portable terminal of realizing that the audio code stream encryption and decryption is handled is characterized in that described terminal comprises: the second integrated processing unit, Power Management Unit, antenna element, and peripheral components; The described second integrated processing unit comprises: baseband processing module, encryption and decryption processing module, Transmit Receive Unit, described encryption and decryption processing module links to each other with Transmit Receive Unit with baseband processing module respectively, is used for that the audio code stream that needs encryption and decryption to handle is carried out encryption and decryption and handles; The encrypted audio code stream that receives from Transmit Receive Unit is sent to baseband processing module through after the described encryption and decryption module decrypts, and the audio code stream to be encrypted that receives from baseband processing module is sent to Transmit Receive Unit through after the described encryption and decryption module encrypt.
3. a portable terminal of realizing that the audio code stream encryption and decryption is handled is characterized in that described terminal comprises: the 3rd integrated processing unit, antenna element, and peripheral components; The described the 3rd integrated processing unit comprises: baseband processing module, encryption and decryption processing module, radio-frequency (RF) receiving and transmission module, Power Management Unit, described encryption and decryption processing module links to each other with Transmit Receive Unit with baseband processing module respectively, is used for that the audio code stream that needs encryption and decryption to handle is carried out encryption and decryption and handles; The encrypted audio code stream that receives from Transmit Receive Unit is sent to baseband processing module through after the described encryption and decryption module decrypts, and the audio code stream to be encrypted that receives from baseband processing module is sent to Transmit Receive Unit through after the described encryption and decryption module encrypt.
4. the portable terminal of handling according to each described realization audio code stream encryption and decryption of claim 1-3 is characterized in that, described encryption and decryption module also is used for generating key when the audio code stream encryption, and key is uploaded to the cipher key service center; And when the audio code stream decryption processing, download key from the cipher key service center and carry out the deciphering of audio code stream.
5. the portable terminal that realization audio code stream encryption and decryption according to claim 4 is handled is characterized in that described encryption and decryption module is carried out uploading and downloading of key information by way of short messages and cipher key service center.
6. the portable terminal of realization audio code stream encryption and decryption according to claim 5 is characterized in that, the mutual note at described encryption and decryption module and cipher key service center is the mutual note of encrypted transmission.
7. realize audio frequency of mobile terminal code stream encrypting and deciphering processing method for one kind, it is characterized in that described method comprises following processing procedure:
1) baseband processing module output audio code stream is to the interior encryption and decryption module of integrated processing unit, the encryption and decryption module sends to Transmit Receive Unit after the input audio code stream is encrypted, and the audio code stream after Transmit Receive Unit will be encrypted outwards sends by RF-wise;
2) Transmit Receive Unit receives the audio code stream of encrypting, and this code stream is forwarded to the encryption and decryption module, and the encryption and decryption module is to encrypting the baseband processing unit that sends to after code stream is deciphered in the integrated processing unit, and baseband processing unit carries out Base-Band Processing to audio code stream.
8. realization audio frequency of mobile terminal code stream encrypting and deciphering processing method according to claim 7 is characterized in that the encryption and decryption module also generates key in the described step 1) when the audio code stream encryption, and key is uploaded to the cipher key service center; Described step 2) the encryption and decryption module is also carried out the deciphering of audio code stream from cipher key service center download key in.
9. realization audio frequency of mobile terminal code stream encrypting and deciphering processing method according to claim 8 is characterized in that the encryption and decryption module is carried out uploading and downloading of key information by way of short messages and cipher key service center.
10. realization audio frequency of mobile terminal code stream encrypting and deciphering processing method according to claim 9 is characterized in that the mutual note at encryption and decryption module and cipher key service center is the mutual note of encrypted transmission.
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| CN2008102174765A CN101420689B (en) | 2008-11-17 | 2008-11-17 | Mobile terminal and method for implementing encoding and decoding process of audio code stream |
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| CN104955034A (en) * | 2015-05-28 | 2015-09-30 | 盛耀无线通讯科技（北京）有限公司 | Communication conversation method |
| CN106850210A (en) * | 2017-02-28 | 2017-06-13 | 努比亚技术有限公司 | Mobile terminal sound call handling method and mobile terminal |
| CN107733833A (en) * | 2016-08-10 | 2018-02-23 | 中国电信股份有限公司 | A kind of CDMA and the voice intercommunication method and system of VoLTE terminals |
| WO2018076671A1 (en) * | 2016-10-27 | 2018-05-03 | 中兴通讯股份有限公司 | Voice data processing device, method and terminal |
| CN108881801A (en) * | 2018-06-29 | 2018-11-23 | 苏州科达科技股份有限公司 | Code stream transmission method, system, electronic equipment, the storage medium of video conference |
Families Citing this family (1)
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| CN104955033A (en) * | 2015-05-28 | 2015-09-30 | 盛耀无线通讯科技（北京）有限公司 | Voice encryption communication method |
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2008
- 2008-11-17 CN CN2008102174765A patent/CN101420689B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104955034A (en) * | 2015-05-28 | 2015-09-30 | 盛耀无线通讯科技（北京）有限公司 | Communication conversation method |
| CN107733833A (en) * | 2016-08-10 | 2018-02-23 | 中国电信股份有限公司 | A kind of CDMA and the voice intercommunication method and system of VoLTE terminals |
| CN107733833B (en) * | 2016-08-10 | 2020-05-08 | 中国电信股份有限公司 | Voice intercommunication method and system for CDMA and VoLTE terminals |
| WO2018076671A1 (en) * | 2016-10-27 | 2018-05-03 | 中兴通讯股份有限公司 | Voice data processing device, method and terminal |
| CN107995673A (en) * | 2016-10-27 | 2018-05-04 | 中兴通讯股份有限公司 | A kind of voice data processing apparatus, method and terminal |
| CN106850210A (en) * | 2017-02-28 | 2017-06-13 | 努比亚技术有限公司 | Mobile terminal sound call handling method and mobile terminal |
| CN108881801A (en) * | 2018-06-29 | 2018-11-23 | 苏州科达科技股份有限公司 | Code stream transmission method, system, electronic equipment, the storage medium of video conference |
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| CN101420689B (en) | 2011-02-16 |
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