CN102857341A - Communication method for encrypted call - Google Patents
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- CN102857341A CN102857341A CN2011101765990A CN201110176599A CN102857341A CN 102857341 A CN102857341 A CN 102857341A CN 2011101765990 A CN2011101765990 A CN 2011101765990A CN 201110176599 A CN201110176599 A CN 201110176599A CN 102857341 A CN102857341 A CN 102857341A
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Abstract
The invention provides a communication method for an encrypted call, wherein after a delimitation label is added to encrypted communication data, the encrypted communication data is sent to a receiving end so that the receiving end also can be accurately delimited according to the delimitation label, and can obtain the encrypted communication data and successfully decrypt the encrypted call even if the encrypted communication data has offset in the transmission process of the encrypted call.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of scrambler phone communication means.
Background technology
Develop rapidly along with modern communication technology, the means of the threat communications network security such as network hacker, network interception instrument also continue to bring out thereupon, if the data in the communication network by improper means intercepting and in addition illegal utilization, will be caused immeasurable loss by the third party.Therefore, how to realize the secure communication of communication network, become the research topic of a current hot topic.
At present, for realizing the secure communication of communication network, the way that industry is general is to encryption of communicated data, even thereby the third party is by improper means intercept communication data, but because this communication data is encrypted, the third party also can't obtain the particular content of these coded communication data easily, thus, has improved the communication security of communication network.
Existing encryption method mainly comprises data link encryption and two kinds of cipher modes of End to End Encryption.Wherein, data link encryption is that only the data link layer before physical layer is encrypted communication data, its some link in transmission course, and communication data embodies with form expressly, thereby can not satisfy the omnidistance privacy requirements from the transmitting terminal to the receiving terminal.
And the encryption method of End to End Encryption has solved the problems referred to above well, and its communication data is encrypted at transmitting terminal, until receiving terminal is just decrypted, does not occur with form expressly in transmission course, finishes in its high level before transmission.
Existing End to End Encryption method, transmitting terminal is before sending communication data, the encrypting module that described communication data is passed to transmitting terminal carries out isometric encryption, and namely the communication data of the plaintext form of some becomes the communication data of the ciphertext form of equal number through behind the End to End Encryption.Then, the communication data after transmitting terminal utilizes communication network with described encryption is sent to receiving terminal.In the transmission course of communication network, there is the transmission shake in the communication network, and communication network is in order to keep constant speed, can in the communication data of transmission, insert some bits, thereby will cause having certain skew and error code between the communication data after the encryption of communication data and transmitting terminal transmission after the encryption that receiving terminal receives.
Please refer to Fig. 1, it is for after utilizing existing End to End Encryption method to encryption of communicated data, the schematic diagram of the communication data after the encryption that the communication data after the encryption that transmitting terminal sends and receiving terminal receive.As shown in Figure 1, transmitting terminal sends the communication data D10 after encrypting, and for example, take existing video-encryption conversation as example, transmitting terminal sends the coded communication data of 160 bytes every 20ms; Same, receiving terminal receives the coded communication data of 160 bytes every 20ms, and through the transmission of communication network, error code or skew have appearred in communication data D11, D12 after the encryption that receiving terminal receives.
Because the communication data through isometric encryption output has pseudo-randomness, do not have in the communication data after the encryption to be used for to carry out this communication data is delimited field with error detection or error correction, therefore, the receiving terminal None-identified goes out the original position of the communication data after the encryption that transmitting terminal sends and can not find error of transmission by error detection correction mechanism, thereby receiving terminal can't be judged the communication data after the encryption of reception and whether have skew and/or error code, and when the communication data after the encryption that receives exists skew and error code, the problem that can not decipher will occur in receiving terminal.
In addition, in the existing End to End Encryption method, the communication data that sends is all encrypted, for example, take existing 3G mobile communication system as example, the each communication data that sends 160 bytes of transmitting terminal, in the communication data of described 160 bytes, comprise control protocol, data protocol, coded audio data and video data encoder etc., wherein, control protocol and data protocol are as known agreement, and its data content is known, and coded audio data and video data encoder are to wish the content of maintaining secrecy in communicating by letter.If communication data is all encrypted, and the third party has intercepted the communication data after encrypting, it is its ciphertext that has obtained communication data, and the part of communication data expressly is easy to know, the content that is control protocol and data protocol is easy to know, with respect to the situation of only knowing ciphertext, existing End to End Encryption method is easy to decrypted, has reduced the reliability of End to End Encryption.
Summary of the invention
The object of the present invention is to provide a kind of scrambler phone communication means, to solve in the existing End to End Encryption method, receiving terminal is offset owing to the scrambler phone that receives exists, thereby the problem that scrambler phone can not be deciphered will occur.
For solving the problems of the technologies described above, the invention provides a kind of scrambler phone communication means, when its transmitting terminal sends scrambler phone, comprise the steps: the obtaining communication data; According to confidentiality agreement to described encryption of communicated data; Send to receiving terminal after label is delimited in interpolation to the communication data after the described encryption.
Optionally, in described scrambler phone communication means, described communication data comprises: control protocol, data protocol, coded audio data and video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises one or more encryption in described control protocol, data protocol, coded audio data and the video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises encrypts described coded audio data and/or video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises specifies identical or different keys to described control protocol, data protocol, coded audio data and video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises encrypts a unit or continuous a plurality of unit of described communication data.
Optionally, in described scrambler phone communication means, after to described encryption of communicated data, and before the communication data after the described encryption is added the demarcation label, also comprise the steps: the communication data after the described encryption is carried out bit 0 update and/or adds sequence number and/or control field and/or CRC check sequence.
The present invention also provides another kind of scrambler phone communication means, when its receiving terminal receives scrambler phone, comprises the steps: to receive the communication data that has added after the encryption of delimiting label; Delimit by delimiting the communication data of label after to described encryption, obtain the communication data after the described encryption; According to the communication data deciphering of confidentiality agreement after to described encryption, obtain communication data.
Optionally, in described scrambler phone communication means, described communication data comprises: control protocol, data protocol, coded audio data and video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises one or more deciphering in described control protocol, data protocol, coded audio data and the video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises described coded audio data and/or video data encoder deciphering.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises specifies identical or different keys to described control protocol, data protocol, coded audio data and video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises a unit or the continuous a plurality of unit deciphering to described communication data.
Optionally, in described scrambler phone communication means, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprise the steps: the communication data after the described encryption is carried out bit 0 deletion action.
Optionally, in described scrambler phone communication means, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, comprise the steps: that also the communication data after the described encryption is carried out error detection to be processed.
Optionally, in described scrambler phone communication means, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, comprise the steps: that also the communication data after the described encryption is carried out EDC error detection and correction to be processed.
Optionally, in described scrambler phone communication means, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprise the steps: the communication data after the described encryption is carried out the sequence number inspection.
The present invention also provides another kind of scrambler phone communication means, and it comprises: when transmitting terminal sends scrambler phone, and the obtaining communication data; According to confidentiality agreement to described encryption of communicated data; Send to receiving terminal after label is delimited in interpolation to the communication data after the described encryption; When receiving terminal received scrambler phone, the communication data after the encryption of delimiting label had been added in reception; By delimiting label the communication data after encrypting is delimited, obtained the communication data after the described encryption; According to the communication data deciphering of confidentiality agreement after to described encryption, obtain communication data.
Optionally, in described scrambler phone communication means, described communication data comprises: control protocol, data protocol, coded audio data and video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises one or more encryption and decryption in described control protocol, data protocol, coded audio data and the video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises described coded audio data and/or video data encoder encryption and decryption.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises specifies identical or different keys to described control protocol, data protocol, coded audio data and video data encoder.
Optionally, in described scrambler phone communication means, described confidentiality agreement comprises a unit or the continuous a plurality of unit encryption and decryption to described communication data.
Optionally, in described scrambler phone communication means, after to described encryption of communicated data, and before the communication data after the described encryption is added the demarcation label, also comprise the steps: the communication data after the described encryption is carried out bit 0 update and/or adds sequence number and/or control field and/or CRC check sequence.
Optionally, in described scrambler phone communication means, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprise the steps: the communication data after the described encryption is carried out bit 0 deletion action.
Optionally, in described scrambler phone communication means, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, comprise the steps: that also the communication data after the described encryption is carried out error detection to be processed.
Optionally, in described scrambler phone communication means, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, comprise the steps: that also the communication data after the described encryption is carried out EDC error detection and correction to be processed.
Optionally, in described scrambler phone communication means, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprise the steps: the communication data after the described encryption is carried out the sequence number inspection.
In scrambler phone communication means provided by the invention, to sending to receiving terminal behind the communication data interpolation demarcation label after encrypting, even thereby in the scrambler phone transmission course, skew has occured in the communication data after the encryption, receiving terminal also can be according to described demarcation label, accurately delimit, the communication data after obtaining to encrypt successfully is decrypted scrambler phone.
Further, in scrambler phone communication means provided by the invention, the communication data that can only maintain secrecy to hope is encrypted, for example coded audio data and/or video data encoder, and plaintext communication protocols more easy to know are not encrypted, thereby improved the communication data after the encryption by the difficulty that the third party intercepts rear deciphering, namely improved the reliability of encrypting.
Description of drawings
Fig. 1 is after utilizing existing End to End Encryption method to encryption of communicated data, the schematic diagram of the communication data after the encryption that the communication data after the encryption that transmitting terminal sends and receiving terminal receive;
Fig. 2 is the schematic flow sheet of the scrambler phone communication means of one embodiment of the invention;
Fig. 3 is the theory diagram of the scrambler phone communication means of one embodiment of the invention;
Fig. 4 is the schematic flow sheet of the scrambler phone communication means of one embodiment of the invention;
Fig. 5 is the theory diagram of the scrambler phone communication means of one embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments scrambler phone communication means provided by the invention is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that accompanying drawing all adopts very the form of simplifying, only in order to convenient, the purpose of the aid illustration embodiment of the invention lucidly.
Please refer to Fig. 2, it is the schematic flow sheet of the scrambler phone communication means of one embodiment of the invention.As shown in Figure 2, when transmitting terminal sends scrambler phone, need proceed as follows:
S210: obtaining communication data;
S220: according to confidentiality agreement to described encryption of communicated data;
S230: send to receiving terminal after label is delimited in interpolation to the communication data after the described encryption.
Concrete, in the present embodiment, take the video-encryption phone as example, certainly, this scrambler phone communication means also is applicable to only comprise the voice encryption phone of voice communication data.
Please refer to Fig. 3, it is the theory diagram of the scrambler phone communication means of one embodiment of the invention.As shown in Figure 3, transmitting terminal comprises: security module and meet H.223 adaptation layer and the multiplex layer of agreement.
In the present embodiment, at first, obtain the adaptation layer Service Data Unit as communication data;
Secondly, according to confidentiality agreement described adaptation layer Service Data Unit is encrypted;
Then, dispose the adaptation layer Service Data Unit after the described encryption, form adaptation layer protocol data units, comprising: the adaptation layer Service Data Unit after the described encryption is added sequence number and/or control field and/or CRC check sequence;
Then, described adaptation layer protocol data units is passed to multiplex layer, form the multiplex layer Service Data Unit;
Follow again, dispose described multiplex layer Service Data Unit, form the multiplex layer protocol Data Unit, comprising: described multiplex layer Service Data Unit is carried out bit 0 update, adds the header unit and delimits label;
At last, described multiplex layer protocol Data Unit is reached sending module, to issue receiving terminal.
In the present embodiment, delimit label by adding, thereby, even in the scrambler phone transmission course, skew has occured in the communication data after the encryption, and receiving terminal also can be according to described demarcation label, accurately delimit, the communication data after obtaining to encrypt successfully is decrypted scrambler phone.
In the present embodiment, by described multiplex layer Service Data Unit is carried out bit 0 update, can eliminate described multiplex layer Service Data Unit, namely add and delimit the character string identical with delimiting label that exists in the front communication data of label, thereby improve accuracy and the reliability that receiving terminal is delimited.
In addition, by the adaptation layer Service Data Unit after the described encryption is added sequence number and/or control field and/or CRC check sequence, be convenient to receiving terminal the adaptation layer Service Data Unit after encrypting is carried out error control, concrete, can carry out error detection, perhaps further comprise error correction, namely the mistake that detects is corrected.Certainly, in other embodiments of the invention, also can not comprise error control mechanism so that the spending of saving system.
In the present embodiment, also the adaptation layer Service Data Unit sequence number and/or control field have been added; Described multiplex layer Service Data Unit has been added the header unit, thereby can further control the order of aforementioned data.Certainly, in other embodiments of the invention, also can not comprise error control mechanism so that the spending of saving system.
In addition, in other embodiments of the invention, do not having in the situation of multiplex layer, can add adaptation layer protocol data units and delimit label, thereby the communication data after encrypting is delimited, so that receiving terminal can accurately delimit the communication data after the encryption that receives, thus successfully deciphering.
Concrete, adaptation layer is obtained the adaptation layer Service Data Unit among the layer user from it by logical channel, and described upper-layer user is such as being application layer, voice-input device, video input apparatus etc.Described adaptation layer Service Data Unit comprises: control protocol, data protocol, coded audio data and video data encoder etc.
Then, adaptation layer reaches security module with the adaptation layer Service Data Unit that obtains, and described security module is encrypted described adaptation layer Service Data Unit according to known confidentiality agreement.Described confidentiality agreement can comprise: to one or more encryption in described control protocol, data protocol, coded audio data and the video data encoder.Described confidentiality agreement also can comprise specifies identical or different keys to described control protocol, data protocol, coded audio data and video data encoder.In addition, described confidentiality agreement also can comprise a described adaptation layer Service Data Unit is encrypted or a plurality of continuous described adaptation layer Service Data Units are encrypted simultaneously.
In the present embodiment, described confidentiality agreement comprises described coded audio data and video data encoder is encrypted.Because described coded audio data and video data encoder are the essence of communicating pair information interaction, it normally wishes secret data in communication process, therefore, in the present embodiment, described confidentiality agreement comprises described coded audio data and video data encoder is encrypted.In addition, described control protocol and data protocol are not the essence of communicating pair information interaction, and its content is unimportant with plaintext form or ciphertext form, therefore, encrypt spending in order to save, and described control protocol and data protocol are not encrypted.And because described control protocol and data protocol are not encrypted, the third party is when the intercept communication data, do not have plaintext corresponding to part, thus with respect in the prior art, have in the situation of plaintext corresponding to ciphertext and part, to difficultly decode ciphertext, thereby improve the reliability of End to End Encryption, namely ensure the communication security of coded audio data and video data encoder.
Certainly, in other embodiments of the invention, the key that described coded audio data and video data encoder are encrypted is got not identical key with the key that described control protocol and data protocol are encrypted, thereby the third party is when the intercept communication data, also can not release described coded audio data and video data encoder key according to described control protocol and data protocol, thereby be decrypted.In other embodiments of the invention, can also get not identical key with the key that described video data encoder is encrypted to the key that described coded audio data is encrypted, thereby in communication transmission process, can further improve the transmission reliability of the communication data after the encryption.Whether and the choosing of key the encryption of the communication datas such as described control protocol, data protocol, coded audio data and video data encoder, can decide according to concrete security requirements, according to aforementioned content, the method for specifically choosing is clearly to those skilled in the art.
At last, transmitting terminal has formed communication data to be sent after the encryption and the configuration to the communication data after encrypting finished communication data, in the present embodiment, be the multiplex layer protocol Data Unit of transmission.Then, the multiplex layer protocol Data Unit of described transmission can be put into the transmission buffer memory of transmitting terminal, every 20ms, take out the communication data of 160 bytes from described transmission buffer memory in order to send, pass to the sending module of transmitting terminal, described sending module just can be sent to receiving terminal with the communication data of this encryption, forms the multiplex layer protocol Data Unit that receives at receiving terminal.
Transmitting terminal sends to receiving terminal with scrambler phone, when receiving terminal receives scrambler phone, comprises the steps, such as Fig. 4:
S410: the communication data after the encryption of delimiting label has been added in reception;
S420: delimit by delimiting the communication data of label after to described encryption, obtain the communication data after the described encryption;
S430: according to the communication data deciphering of confidentiality agreement after to described encryption, obtain communication data.
At this, receiving terminal is corresponding with transmitting terminal, and equally take the video-encryption phone as example, certainly, this scrambler phone communication means also is applicable to only comprise the voice encryption phone of voice communication data.
Concrete, please refer to Fig. 5:
Receiving terminal receives the multiplex layer protocol Data Unit, according to delimiting label, described multiplex layer protocol Data Unit delimited, thereby, even exist in the situation of skew, also can find the original position of multiplex layer protocol Data Unit, be convenient to follow-up deciphering.
Then, the multiplex layer protocol Data Unit of described reception is carried out the bit opposite with transmitting terminal 0 deletion action, isolate the multiplex layer Service Data Unit.Then, the multiplex layer Service Data Unit is passed to adaptation layer, obtain adaptation layer protocol data units.
Added at transmitting terminal in the situation of sequence number and/or control field and/or CRC check sequence, receiving terminal just can carry out the error detection/correction operation, thereby the communication data after the encryption that receives is carried out error control.After finishing the error control to the communication data after encrypting, from adaptation layer protocol data units, isolate the adaptation layer Service Data Unit after the encryption.
Then, according to confidentiality agreement, the adaptation layer Service Data Unit after the described encryption is decrypted.Adapt with transmitting terminal, the confidentiality agreement of receiving terminal comprises: for example, at transmitting terminal, described confidentiality agreement comprises described coded audio data and video data encoder is encrypted, then at receiving terminal, described confidentiality agreement comprises described coded audio data and video data encoder is decrypted.Be the corresponding setting with receiving terminal of transmitting terminal, at this, repeat no more.
By the scrambler phone communication means that present embodiment provides, even in the scrambler phone transmission course, skew has occured in the communication data after the encryption, receiving terminal also can be according to described demarcation label, accurately delimit, the communication data after obtaining to encrypt successfully is decrypted scrambler phone.
Further, be encrypted by the communication data of only hope being maintained secrecy, for example coded audio data and/or video data encoder, and plaintext communication protocols more easy to know are not encrypted, thereby improved the communication data after the encryption by the difficulty that the third party intercepts rear deciphering, namely improved the reliability of encrypting.
In addition, in the present embodiment, before transmitting terminal and receiving terminal were encrypted telephone communication, namely when communicating link establishment, confidentiality agreement was determined in the negotiation of can maintaining secrecy of transmitting terminal and receiving terminal.Concrete, for example, transmitting terminal can send a confidentiality agreement, and described confidentiality agreement can comprise that encode audio data and video data encoder are encrypted, and the key that described coded audio data and video data encoder are encrypted; After receiving terminal receives this confidentiality agreement, can confirm this confidentiality agreement, send a confirmation signal; Transmitting terminal sends a confirmation signal again, thereby transmitting terminal and receiving terminal have been finished secret negotiation, and determined that encode audio data and video data encoder are encrypted, and the confidentiality agreement of the key that described coded audio data and video data encoder are encrypted.Certainly, receiving terminal is after the confidentiality agreement that receiving end/sending end is sent, also can not confirm this confidentiality agreement, and send a new confidentiality agreement, for example, video data encoder is encrypted, and the key that described video data encoder is encrypted, transmitting terminal can be confirmed this confidentiality agreement after receiving this new confidentiality agreement, send a confirmation signal; After receiving terminal receives this confirmation signal, send again a confirmation signal, thereby transmitting terminal and receiving terminal have been finished secret negotiation, and determined video data encoder is encrypted, and the confidentiality agreement of the key that described video data encoder is encrypted.
Thus, transmitting terminal and receiving terminal can determine that meets a security requirements according to the level of confidentiality degree of communication data, and simultaneous minimization is encrypted the confidentiality agreement of spending.Certainly, in other embodiments of the invention, described confidentiality agreement can not held consultation at transmitting terminal and receiving terminal yet, but fixing in the security module of transmitting terminal and receiving terminal.
Foregoing description only is the description to preferred embodiment of the present invention, is not any restriction to the scope of the invention, and any change, modification that the those of ordinary skill in field of the present invention is done according to above-mentioned disclosure all belong to the protection range of claims.
Claims (28)
1. a scrambler phone communication means is characterized in that, when transmitting terminal sends scrambler phone, comprises the steps:
The obtaining communication data;
According to confidentiality agreement to described encryption of communicated data;
Send to receiving terminal after label is delimited in interpolation to the communication data after the described encryption.
2. scrambler phone communication means as claimed in claim 1 is characterized in that, described communication data comprises: control protocol, data protocol, coded audio data and video data encoder.
3. scrambler phone communication means as claimed in claim 2 is characterized in that, described confidentiality agreement comprises one or more encryption in described control protocol, data protocol, coded audio data and the video data encoder.
4. scrambler phone communication means as claimed in claim 3 is characterized in that, described confidentiality agreement comprises encrypts described coded audio data and/or video data encoder.
5. scrambler phone communication means as claimed in claim 2 is characterized in that, described confidentiality agreement comprises specifies identical or different keys to described control protocol, data protocol, coded audio data and video data encoder.
6. scrambler phone communication means as claimed in claim 1 is characterized in that, described confidentiality agreement comprises encrypts a unit or continuous a plurality of unit of described communication data.
7. such as each the described scrambler phone communication means in the claim 1 to 6, it is characterized in that, after to described encryption of communicated data, and before the communication data after the described encryption is added the demarcation label, also comprise the steps:
Communication data after the described encryption is carried out bit 0 update and/or adds sequence number and/or control field and/or CRC check sequence.
8. a scrambler phone communication means is characterized in that, when receiving terminal receives scrambler phone, comprises the steps:
The communication data after the encryption of delimiting label has been added in reception;
Delimit by delimiting the communication data of label after to described encryption, obtain the communication data after the described encryption;
According to the communication data deciphering of confidentiality agreement after to described encryption, obtain communication data.
9. scrambler phone communication means as claimed in claim 8 is characterized in that, described communication data comprises: control protocol, data protocol, coded audio data and video data encoder.
10. scrambler phone communication means as claimed in claim 9 is characterized in that, described confidentiality agreement comprises one or more deciphering in described control protocol, data protocol, coded audio data and the video data encoder.
11. scrambler phone communication means as claimed in claim 10 is characterized in that, described confidentiality agreement comprises described coded audio data and/or video data encoder deciphering.
12. scrambler phone communication means as claimed in claim 9 is characterized in that, described confidentiality agreement comprises specifies identical or different keys to described control protocol, data protocol, coded audio data and video data encoder.
13. scrambler phone communication means as claimed in claim 8 is characterized in that, described confidentiality agreement comprises a unit or the continuous a plurality of unit deciphering to described communication data.
14. each the described scrambler phone communication means as in the claim 8 to 13 is characterized in that, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprises the steps:
Communication data after the described encryption is carried out bit 0 deletion action.
15. each the described scrambler phone communication means as in the claim 8 to 13 is characterized in that, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprises the steps:
Communication data after the described encryption is carried out error detection to be processed.
16. each the described scrambler phone communication means as in the claim 8 to 13 is characterized in that, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprises the steps:
Communication data after the described encryption is carried out EDC error detection and correction to be processed.
17. each the described scrambler phone communication means as in the claim 8 to 13 is characterized in that, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprises the steps:
Communication data after the described encryption is carried out the sequence number inspection.
18. a scrambler phone communication means is characterized in that, comprising:
When transmitting terminal sends scrambler phone, the obtaining communication data; According to confidentiality agreement to described encryption of communicated data; Send to receiving terminal after label is delimited in interpolation to the communication data after the described encryption;
When receiving terminal received scrambler phone, the communication data after the encryption of delimiting label had been added in reception; Delimit by delimiting the communication data of label after to described encryption, obtain the communication data after the described encryption; According to the communication data deciphering of confidentiality agreement after to described encryption, obtain communication data.
19. scrambler phone communication means as claimed in claim 18 is characterized in that, described communication data comprises: control protocol, data protocol, coded audio data and video data encoder.
20. scrambler phone communication means as claimed in claim 19 is characterized in that, described confidentiality agreement comprises one or more encryption and decryption in described control protocol, data protocol, coded audio data and the video data encoder.
21. scrambler phone communication means as claimed in claim 20 is characterized in that, described confidentiality agreement comprises described coded audio data and/or video data encoder encryption and decryption.
22. scrambler phone communication means as claimed in claim 19 is characterized in that, described confidentiality agreement comprises specifies identical or different keys to described control protocol, data protocol, coded audio data and video data encoder.
23. scrambler phone communication means as claimed in claim 18 is characterized in that, described confidentiality agreement comprises a unit or the continuous a plurality of unit encryption and decryption to described communication data.
24. each the described scrambler phone communication means as in the claim 18 to 23 is characterized in that, after to described encryption of communicated data, and before the communication data after the described encryption is added the demarcation label, also comprises the steps:
Communication data after the described encryption is carried out bit 0 update and/or adds sequence number and/or control field and/or CRC check sequence.
25. each the described scrambler phone communication means as in the claim 18 to 23 is characterized in that, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprises the steps:
Communication data after the described encryption is carried out bit 0 deletion action.
26. each the described scrambler phone communication means as in the claim 18 to 23 is characterized in that, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprises the steps:
Communication data after the described encryption is carried out error detection to be processed.
27. each the described scrambler phone communication means as in the claim 18 to 23 is characterized in that, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprises the steps:
Communication data after the described encryption is carried out EDC error detection and correction to be processed.
28. each the described scrambler phone communication means as in the claim 18 to 23 is characterized in that, behind the communication data after obtaining encryption, and to before the deciphering of the communication data after the described encryption, also comprises the steps:
Communication data after the described encryption is carried out the sequence number inspection.
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| CN2011101765990A CN102857341A (en) | 2011-06-28 | 2011-06-28 | Communication method for encrypted call |
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| CN2011101765990A CN102857341A (en) | 2011-06-28 | 2011-06-28 | Communication method for encrypted call |
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| CN105141637A (en) * | 2015-09-25 | 2015-12-09 | 中铁工程装备集团有限公司 | Transmission encryption method taking flows as granularity |
| CN105915737A (en) * | 2016-06-15 | 2016-08-31 | Tcl移动通信科技（宁波）有限公司 | Circuit switching method and system |
| CN105960811A (en) * | 2014-01-29 | 2016-09-21 | 三星电子株式会社 | User terminal device and secured communication method thereof |
| CN105978864A (en) * | 2016-04-28 | 2016-09-28 | 施巍巍 | Data transmission method for Internet voice transmission and system |
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| CN105960811A (en) * | 2014-01-29 | 2016-09-21 | 三星电子株式会社 | User terminal device and secured communication method thereof |
| CN105960811B (en) * | 2014-01-29 | 2019-12-03 | 三星电子株式会社 | Subscriber terminal equipment and its guarded communication method |
| CN105141637A (en) * | 2015-09-25 | 2015-12-09 | 中铁工程装备集团有限公司 | Transmission encryption method taking flows as granularity |
| CN105978864A (en) * | 2016-04-28 | 2016-09-28 | 施巍巍 | Data transmission method for Internet voice transmission and system |
| CN105915737A (en) * | 2016-06-15 | 2016-08-31 | Tcl移动通信科技（宁波）有限公司 | Circuit switching method and system |
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