CN109905367A - Speech ciphering method based on the air-ground call of VOIP - Google Patents
Speech ciphering method based on the air-ground call of VOIP Download PDFInfo
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Abstract
The invention discloses the speech ciphering methods based on the air-ground call of VOIP, the described method includes: S101: the device that quiets down for first passing through voice communication management service software inhouse receives the voice messaging of terrestrial user, then the received voice messaging of device that quiets down is by pcm encoder module samples, quantization, original voice messaging is restrained into the coding compression of 13 broken lines using A by pcm encoder module, generates digital signal；S102: then des encryption module is encrypted using the digital signal that DES algorithm generates pcm encoder module, then gives encrypted digital data transmission to VHF land station；Original voice messaging is restrained the coding compression of 13 broken lines using A by pcm encoder module by the present invention, generate digital signal, then it is encrypted by des encryption module using the digital signal that DES algorithm generates pcm encoder module, the voice content of the air-ground call of VOIP can be encrypted in this way, it prevents the dialog context between air-ground from revealing, improves the confidentiality of the air-ground call of VOIP.
Description
Technical field
The present invention relates to VOIP voice technology fields, the specially speech ciphering method based on the air-ground call of VOIP.
Background technique
VOIP refers to the sound signal that will be simulated after overcompression and package, in IP network in the form of data packet
Environment carry out the transmission of speech sound signal, it is popular for namely Internet Protocol telephone or abbreviation IP phone the meaning, VOIP skill
Art is a hot topic of current internet application field.
The main task of VOIP voice communication system software is the voice messaging by VHF radio in IP-based net
Real-time transmission on network transmission platform, to realize the air-ground wireless communication function between seat and aerial platform；It can be realized the people
Boat internal cable telephone relation function, such as converse between seat and seat, between seat and external pstn telephone；It can be realized
Whole real-time recording and seat is carried out to local all calls (including air-ground wireless communication, wire communication) to record in short-term,
Offer voice record is according to keywords retrieved and playback function；It can be realized and monitoring is managed to system safety and equipment state,
When such as the License legitimate verification of equipment networking, the authentication of terminal user, the management of role's operating right, voice transfer
Prolong detection etc..
VOIP voice communication system software includes voice communication management service software, control seat client software, management
Four softwares of seat client software and radio station gateway software are monitored, aforementioned four software mutually cooperates with, common to complete VoIP words
The task of sound communication system.
During carrying out air-ground call using VOIP, air-ground dialog context is not encrypted well, when other
When the staff of base station receives air-ground speech signal, it is easy to the content for locating air-ground call can be decoded, to cause
Air-ground call-information leakage.
Summary of the invention
The purpose of the present invention is to provide the speech ciphering methods based on the air-ground call of VOIP, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme: the speech ciphering method based on the air-ground call of VOIP,
The described method includes: S101: the device that quiets down for first passing through voice communication management service software inhouse receives the voice letter of terrestrial user
Breath, the received voice messaging of device that then quiets down is by pcm encoder module samples, quantization, by pcm encoder module by original language
Message breath restrains the coding compression of 13 broken lines using A, generates digital signal；S102: then des encryption module is using DES algorithm to PCM
The digital signal that coding module generates is encrypted, and is then given encrypted digital data transmission to VHF land station, is passed through
Radio station gateway software in VHF land station receives encrypted digital signal；S103: the radio station net in VHF land station
When pass software receives encrypted digital signal, received by database server storage radio station gateway software encrypted
Digital signal, while encrypted digital signal transmission being gone out by ground communications antenna；S104: pass through air communication antenna
The encrypted digital signal for receiving the transmitting of ground communications antenna, it is electric in the air to be then uploaded to VHF for encrypted digital signal
Platform receives encrypted digital signal by the radio station gateway in VHF Air Radio；S105: and then VHF Air Radio is by radio station net
It closes received encrypted digital data transmission and gives control seat client software, then by the client software of control seat
DES deciphering module the digital signal of encryption is decrypted, DES deciphering module using DES algorithm to control seat client
The received scrambled digital signal of software is decrypted；S106: and then source decoding module is converted using D/A, by the number after decryption
Word signal carries out source decoding, restores analog signal, obtains corresponding voice messaging, then passes through control seat client software
The voice messaging being converted to is uploaded to loudspeaker, is then played back voice messaging by loudspeaker.
Wherein, the voice communication management service software mainly includes soft switch and Speech Communication scheduling feature, radio station net
Off status monitoring, seat terminal communications access control, terminal unit management, user management, sound and time recording, time synchronization and system
Log management function；The sound and time recording by go out, enter terminal send voice rtp streaming to telecommunication management service software recording mould
Block.
Wherein, the device that quiets down is for assisting the recording module to receive the voice messaging of terrestrial user.
Wherein, the pcm encoder module is used to that the original voice messaging to be sampled and be quantified, and the pcm encoder
Module is used to the original voice messaging restraining the coding compression of 13 broken lines using A, generates digital signal.
Wherein, the des encryption module is encrypted using the digital signal that DES algorithm generates pcm encoder module.
Wherein, believed between the VHF land station and VHF Air Radio by ground communications antenna and air communication antenna
Number connection.
Wherein, the decrypting process of the DES deciphering module and the ciphering process of the des encryption module are with the same mistake
Journey, the DES deciphering module decryption is only needed the des encryption module cipher key sequence in turn, to the control seat visitor
The digital signal that encryption is received in the software of family end is decrypted.
Wherein, the source decoding module letter is converted using D/A, and the digital signal after decryption is carried out source decoding, extensive
Multiple analog signal.
Compared with prior art, the beneficial effects of the present invention are:
The present invention first passes through pcm encoder module and original voice messaging is restrained the coding compression of 13 broken lines using A, generates number
Then signal is encrypted using the digital signal that DES algorithm generates pcm encoder module by des encryption module, is then led to
It crosses ground communications antenna and the cooperation of air communication antenna and sends the digital signal of encryption to VHF Air Radio, then pass through DES
The digital signal of encryption is decrypted deciphering module, and is believed by source decoding module the digital signal after decryption carrying out letter
Source decoding, restores analog signal, to obtain corresponding voice messaging, in this way can by the voice content of the air-ground call of VOIP into
Row encryption, prevents the dialog context between air-ground from revealing, improves the confidentiality of the air-ground call of VOIP.
Detailed description of the invention
Fig. 1 is the flow diagram of working method of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention is described in detail with embodiment with reference to the accompanying drawing.
Referring to Fig. 1, Fig. 1 is the flow diagram of working method of the present invention
Embodiment one, terrestrial user transmit voice messaging, the voice encryption side based on the air-ground call of VOIP to aerial user
Method, which comprises
S101: the device that quiets down for first passing through voice communication management service software inhouse receives the voice messaging of terrestrial user, so
After quiet down the received voice messaging of device by pcm encoder module samples, quantization, original voice is believed by pcm encoder module
Breath restrains the coding compression of 13 broken lines using A, generates digital signal；
S102: then des encryption module is encrypted using the digital signal that DES algorithm generates pcm encoder module, so
It gives encrypted digital data transmission to VHF land station afterwards, encryption is received by the radio station gateway software in VHF land station
Digital signal afterwards；
S103: when the radio station gateway software in VHF land station receives encrypted digital signal, pass through database
Server storage radio station gateway software receives encrypted digital signal, while passing through ground communications antenna for encrypted number
Word signal is launched；
S104: receiving the encrypted digital signal of ground communications antenna transmitting by air communication antenna, then will add
Digital signal after close is uploaded to VHF Air Radio, receives encrypted number by the radio station gateway in VHF Air Radio and believes
Number；
S105: and then VHF Air Radio gives the received encrypted digital data transmission of radio station gateway to control seat visitor
Then family end software is decrypted the digital signal of encryption by the DES deciphering module in the client software of control seat,
DES deciphering module is decrypted the control seat received scrambled digital signal of client software using DES algorithm；
S106: and then source decoding module is converted using D/A, and the digital signal after decryption is carried out source decoding, is restored
Analog signal obtains corresponding voice messaging, then will be on the voice messaging that be converted to by control seat client software
It is transmitted to loudspeaker, is then played back voice messaging by loudspeaker.
Wherein, the voice communication management service software mainly includes soft switch and Speech Communication scheduling feature, radio station net
Off status monitoring, seat terminal communications access control, terminal unit management, user management, sound and time recording, time synchronization and system
Log management function；The sound and time recording by go out, enter terminal send voice rtp streaming to telecommunication management service software recording mould
Block.
Wherein, the device that quiets down is for assisting the recording module to receive the voice messaging of terrestrial user.
Wherein, the pcm encoder module is used to that the original voice messaging to be sampled and be quantified, and the pcm encoder
Module is used to the original voice messaging restraining the coding compression of 13 broken lines using A, generates digital signal.
Wherein, the des encryption module is encrypted using the digital signal that DES algorithm generates pcm encoder module, institute
Key and additional 8 bit parity check position of the des encryption module using one 56 are stated, it is big to generate maximum 64 groupings
Small, this is the block cipher of an iteration, is made using the referred to as technology of Feistel wherein the text block of encryption is split into two halves
It, then will output and the other half progress nonequivalence operation with sub-key to wherein half application circulatory function；Then exchange this two
Half, this process will continue to down, but the last one circulation does not exchange；Des encryption module is using 16 circulations, using exclusive or,
Displacement, replacement, four kinds of basic operations of shifting function.
Wherein, believed between the VHF land station and VHF Air Radio by ground communications antenna and air communication antenna
Number connection.
Wherein, the decrypting process of the DES deciphering module and the ciphering process of the des encryption module are with the same mistake
Journey, the DES deciphering module decryption is only needed the des encryption module cipher key sequence in turn, to the control seat visitor
The digital signal that encryption is received in the software of family end is decrypted.
Wherein, the source decoding module letter is converted using D/A, and the digital signal after decryption is carried out source decoding, extensive
Multiple analog signal.Wherein, the source decoding module is that one kind carries out source symbol for the purpose of improving communication efficient
Transformation, carried out in other words in order to reduce or eliminate information source benefit remaining source symbol transformation, specifically, aiming at information source
The statistical property of output symbol sequence finds some way, is shortest codeword sequence information source output symbol sequence transformation,
Keep the average information of each symbol institute load of the latter maximum, while can guarantee the symbol sebolic addressing for restoring original without distortions again.
Above scheme: the device that quiets down for first passing through voice communication management service software inhouse receives the voice letter of terrestrial user
Breath, the received voice messaging of device that then quiets down is by pcm encoder module samples, quantization, by pcm encoder module by original language
Message breath is generated digital signal, is then used DES algorithm to PCM by des encryption module using A rule 13 broken lines coding compression
The digital signal that coding module generates is encrypted, and is then given encrypted digital data transmission to VHF land station, is passed through
Radio station gateway software in VHF land station receives encrypted digital signal, the radio station gateway software in VHF land station
When receiving encrypted digital signal, radio station gateway software is stored by database server and receives encrypted number letter
Number, while encrypted digital signal transmission being gone out by ground communications antenna, it is logical to receive ground by air communication antenna
The encrypted digital signal of Iflytech's line transmitting, is then uploaded to VHF Air Radio for encrypted digital signal, by VHF sky
Radio station gateway in middle radio station receives encrypted digital signal, and then VHF Air Radio will be after the received encryption of radio station gateway
Digital data transmission give control seat client software, then pass through the DES deciphering module in the client software of control seat
The digital signal of encryption is decrypted, DES deciphering module is using DES algorithm to the received encryption of control seat client software
Digital signal is decrypted, and then source decoding module is converted using D/A, and the digital signal after decryption is carried out source decoding,
Restore analog signal, obtain corresponding voice messaging, is then believed the voice being converted to by control seat client software
Breath is uploaded to loudspeaker, is then played back voice messaging by loudspeaker.
Embodiment two, user transmits voice messaging, the voice encryption side based on the air-ground call of VOIP to aerial user to the ground
Method, which comprises
S101: the voice messaging that the device that quiets down inside the client software of control seat receives aerial user is first passed through, then
The received voice messaging of the device that quiets down is by pcm encoder module samples, quantization, by pcm encoder module by original voice messaging
The coding compression of 13 broken lines is restrained using A, generates digital signal；
S102: then des encryption module is encrypted using the digital signal that DES algorithm generates pcm encoder module, so
It gives encrypted digital data transmission to VHF Air Radio afterwards, encryption is received by the radio station gateway software in VHF Air Radio
Digital signal afterwards；
S103: when the radio station gateway software in VHF Air Radio receives encrypted digital signal, pass through database
Server storage radio station gateway software receives encrypted digital signal, while passing through air communication antenna for encrypted number
Word signal is launched；
S104: receiving the encrypted digital signal of air communication antenna transmitting by ground communications antenna, then will add
Digital signal after close is uploaded to VHF land station, receives encrypted number by the radio station gateway in radio station in the ground VHF and believes
Number；
S105: and then VHF land station gives the received encrypted digital data transmission of radio station gateway to voice communication pipe
Service software is managed, then the digital signal of encryption is solved by the DES deciphering module in voice communication management service software
Close, DES deciphering module is decrypted the received scrambled digital signal of voice communication management service software using DES algorithm；
S106: and then source decoding module is converted using D/A, and the digital signal after decryption is carried out source decoding, is restored
Analog signal obtains corresponding voice messaging, the voice messaging that then will be converted to by voice communication management service software
It is uploaded to loudspeaker, is then played back voice messaging by loudspeaker.
Above scheme: first passing through the voice messaging that the device that quiets down inside the client software of control seat receives aerial user,
Then the received voice messaging of device that quiets down is by pcm encoder module samples, quantization, by pcm encoder module by original voice
Information restrains the coding compression of 13 broken lines using A, generates digital signal, then des encryption module is using DES algorithm to pcm encoder mould
The digital signal that block generates is encrypted, and then gives encrypted digital data transmission to VHF Air Radio, aerial by VHF
Radio station gateway software in radio station receives encrypted digital signal, and the radio station gateway software in VHF Air Radio receives
When encrypted digital signal, radio station gateway software is stored by database server and receives encrypted digital signal, together
When encrypted digital signal transmission is gone out by air communication antenna, pass through ground communications antenna receive air communication antenna
The encrypted digital signal of transmitting, is then uploaded to VHF land station for encrypted digital signal, by electric in the ground VHF
Radio station gateway in platform receives encrypted digital signal, and then VHF land station is by the received encrypted number of radio station gateway
Word signal is transferred to voice communication management service software, then passes through the DES deciphering module in voice communication management service software
The digital signal of encryption is decrypted, DES deciphering module adds using DES algorithm is received to voice communication management service software
Close digital signal is decrypted, and then source decoding module is converted using D/A, and the digital signal after decryption is carried out information source and is translated
Code restores analog signal, obtains corresponding voice messaging, the language that then will be converted to by voice communication management service software
Message breath is uploaded to loudspeaker, is then played back voice messaging by loudspeaker.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. the speech ciphering method based on the air-ground call of VOIP, which comprises
S101: the device that quiets down for first passing through voice communication management service software inhouse receives the voice messaging of terrestrial user, then receives
The received voice messaging of sound device is adopted original voice messaging by pcm encoder module by pcm encoder module samples, quantization
The coding compression of 13 broken lines is restrained with A, generates digital signal；
S102: then des encryption module is encrypted using the digital signal that DES algorithm generates pcm encoder module, then will
Encrypted digital data transmission gives VHF land station, is received by the radio station gateway software in VHF land station encrypted
Digital signal；
S103: when the radio station gateway software in VHF land station receives encrypted digital signal, pass through database service
Device storage radio station gateway software receives encrypted digital signal, while being believed encrypted number by ground communications antenna
Number launch；
S104: receiving the encrypted digital signal of ground communications antenna transmitting by air communication antenna, after then encrypting
Digital signal be uploaded to VHF Air Radio, encrypted digital signal is received by the radio station gateway in VHF Air Radio；
S105: and then VHF Air Radio gives the received encrypted digital data transmission of radio station gateway to control seat client
Then software is decrypted the digital signal of encryption by the DES deciphering module in the client software of control seat, DES solution
Close module is decrypted the control seat received scrambled digital signal of client software using DES algorithm；
S106: and then source decoding module is converted using D/A, and the digital signal after decryption is carried out source decoding, restores simulation
Signal obtains corresponding voice messaging, is then uploaded to the voice messaging being converted to by control seat client software
Then loudspeaker is played back voice messaging by loudspeaker.
2. the speech ciphering method according to claim 1 based on the air-ground call of VOIP characterized by comprising
The voice communication management service software mainly includes soft switch and Speech Communication scheduling feature, radio station gateway status prison
Survey, seat terminal communications access control, terminal unit management, user management, sound and time recording, time synchronization and system log management
Function；
Wherein, the sound and time recording by go out, enter terminal send voice rtp streaming to telecommunication management service software recording module.
3. the speech ciphering method according to claim 2 based on the air-ground call of VOIP characterized by comprising
The device that quiets down is for assisting the recording module to receive the voice messaging of terrestrial user.
4. the speech ciphering method according to claim 1 based on the air-ground call of VOIP characterized by comprising
The pcm encoder module is used to sample the original voice messaging and quantization, and be used for will for the pcm encoder module
The original voice messaging restrains the coding compression of 13 broken lines using A, generates digital signal.
5. the speech ciphering method according to claim 1 based on the air-ground call of VOIP characterized by comprising
The des encryption module is encrypted using the digital signal that DES algorithm generates pcm encoder module.
6. the speech ciphering method according to claim 1 based on the air-ground call of VOIP characterized by comprising
It is connected between the VHF land station and VHF Air Radio by ground communications antenna and air communication aerial signal.
7. the speech ciphering method according to claim 1 based on the air-ground call of VOIP characterized by comprising
The ciphering process of the decrypting process of the DES deciphering module and the des encryption module be with the same process, it is described
The decryption of DES deciphering module is only needed the des encryption module cipher key sequence in turn, to control seat client software
The interior digital signal for receiving encryption is decrypted.
8. the speech ciphering method according to claim 1 based on the air-ground call of VOIP characterized by comprising
The source decoding module letter is converted using D/A, and the digital signal after decryption is carried out source decoding, restores simulation letter
Number.
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| CN111970292A (en) * | 2020-08-24 | 2020-11-20 | 成都天奥信息科技有限公司 | Civil aviation VoIP voice communication exchange system and control seat distributed networking method |
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