CN106878299A - A kind of voice encryption, decryption method and equipment - Google Patents
A kind of voice encryption, decryption method and equipment Download PDFInfo
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- CN106878299A CN106878299A CN201710069844.5A CN201710069844A CN106878299A CN 106878299 A CN106878299 A CN 106878299A CN 201710069844 A CN201710069844 A CN 201710069844A CN 106878299 A CN106878299 A CN 106878299A
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- encryption
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- speech
- voice
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
Abstract
This application discloses a kind of voice encryption, decryption method and equipment, the speech ciphering method includes：Obtain speech frame to be encrypted；According to the pitch parameter of the speech frame to be encrypted, the encryption speech frame with the pitch parameter is searched from speech database；According to preset rules, at least one is selected to encrypt speech frame from the encryption speech frame for finding；According at least one encryption speech frame of selection, the speech frame to be encrypted is encrypted, the speech frame after being encrypted.The embodiment of the present application to speech frame to be encrypted when being encrypted, pitch parameter Choice encryption speech frame according to the speech frame to be encrypted is encrypted, the integrality of the speech frame voice messaging after compressed encoding after encryption can be effectively ensured in terms of existing technologies so that recipient can obtain the speech frame that sender sends according to the speech frame after the encryption for receiving.
Description
Technical field
The application is related to voice communication technology field, more particularly to a kind of voice encryption, decryption method and equipment.
Background technology
With developing rapidly for mobile communication and network technology, voice communication has become a kind of very important communication party
Formula.In voice communication, voice signal is generally sent to recipient, voice communication system by voice communication system by sender
When by the transmitting voice signal to recipient, the voice signal can be compressed coding, and by the language after compressed encoding
Message number is transmitted, and to improve the utilization rate of channel, recipient, can be with after voice communication system receives voice signal
To the voice signal decompression processing for receiving, and the voice signal that sender sends is obtained, realized and the language between sender
Sound communicates.
In order to ensure the security of voice signal, generally, sender, can be to the voice before voice signal is sent
Signal is encrypted, and the voice signal after encryption is sent into recipient by voice communication system, now, uses voice pressure
The voice communication system of code is reduced the staff, the voice signal after encryption coding can be compressed, and is sent to recipient, recipient exists
After receiving the voice signal, decompression processing is carried out to the voice signal, and the voice signal after decompression is decrypted, obtained
Voice signal after decryption, realizes and the voice communication between sender.So, it is encrypted by voice signal, can be with
Improve the security of voice communication.
However, sender to voice signal when being encrypted, voice signal is carried out usually using digital encryption method
Encryption, so, when the voice signal after to encryption is compressed and transmits, due to using digital encryption method to voice signal
It is encrypted so that when the voice signal after to encryption is compressed, be easily lost the voice messaging of voice signal, cause to connect
Debit cannot obtain the voice signal that sender sends according to the voice signal for receiving.
The content of the invention
The embodiment of the present application provides a kind of voice encryption, decryption method and equipment, for solving in the prior art to sending
Side send voice signal carry out digital encryption and compress, be easily lost the voice messaging in voice signal, cause recipient without
Method obtains the problem of the voice signal that sender sends.
The embodiment of the present application provides a kind of speech ciphering method, including：
Obtain speech frame to be encrypted；
According to the pitch parameter of the speech frame to be encrypted, searched with the pitch parameter from speech database
Encryption speech frame, includes different pitch parameter and the encryption voice with the pitch parameter in the speech database
Frame；
According to preset rules, at least one is selected to encrypt speech frame from the encryption speech frame for finding；
According at least one encryption speech frame of selection, the speech frame to be encrypted is encrypted, is added
Speech frame after close.
The embodiment of the present application also provides a kind of voice decryption method, including：
Receive the speech frame after the encryption that sender sends；
According to the pitch parameter of the speech frame after the encryption, searched with the pitch parameter from speech database
Decrypted voice frame, includes different pitch parameter and the decrypted voice with the pitch parameter in the speech database
Frame；
According to preset rules, at least one decrypted voice frame is selected from the decrypted voice frame for finding；
According at least one decrypted voice frame of selection, the speech frame after the encryption is decrypted, is solved
Speech frame after close.
The embodiment of the present application provides a kind of voice encryption equipment, including：
Acquiring unit, obtains speech frame to be encrypted；
Searching unit, according to the pitch parameter of the speech frame to be encrypted, searches described in having from speech database
The encryption speech frame of pitch parameter, comprising different pitch parameter and with the pitch parameter in the speech database
Encryption speech frame；
Select unit, according to preset rules, selects at least from the encryption speech frame that the searching unit finds
One encryption speech frame；
Ciphering unit, according at least one encryption speech frame that the select unit is selected, to described to be encrypted
Speech frame is encrypted, the speech frame after being encrypted.
The embodiment of the present application also provides a kind of voice decryption device, including：
Receiving unit, receives the speech frame after the encryption that sender sends；
Searching unit, according to the pitch parameter of the speech frame after the encryption, searches described in having from speech database
The decrypted voice frame of pitch parameter, comprising different pitch parameter and with the pitch parameter in the speech database
Decrypted voice frame；
Select unit, according to preset rules, selects at least from the decrypted voice frame that the searching unit finds
One decrypted voice frame；
Decryption unit, according at least one decrypted voice frame that the select unit is selected, after the encryption
Speech frame is decrypted, the speech frame after being decrypted.
Above-mentioned at least one technical scheme that the embodiment of the present application is used can reach following beneficial effect：
The technical scheme that the embodiment of the present application is provided, when being encrypted to speech frame to be encrypted, according to be encrypted
The pitch parameter of speech frame, determines the encryption speech frame with identical pitch parameter, according to preset rules from speech database
Selection wherein at least one encryption speech frame, and speech frame to be encrypted is encrypted according to the encryption speech frame of selection.This
Sample, because the embodiment of the present application to speech frame to be encrypted when being encrypted, the fundamental tone ginseng according to the speech frame to be encrypted
Number Choice encryption speech frame is encrypted, and the speech frame after encryption can be effectively ensured in terms of existing technologies and compiled in compression
The integrality of voice messaging after code so that recipient can obtain what sender sent according to the speech frame after the encryption for receiving
Speech frame.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please does not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
A kind of schematic flow sheet of speech ciphering method that Fig. 1 is provided for the embodiment of the present application；
A kind of schematic flow sheet of voice decryption method that Fig. 2 is provided for the embodiment of the present application；
A kind of voice encryption and the schematic flow sheet of decryption method that Fig. 3 is provided for the embodiment of the present application；
A kind of structural representation of voice encryption equipment that Fig. 4 is provided for the embodiment of the present application；
A kind of structural representation of voice decryption device that Fig. 5 is provided for the embodiment of the present application.
Specific embodiment
In voice communication, when the voice signal of sender is sent into recipient, first, sender can be to needing
The voice signal of transmission is encrypted, the voice signal after being encrypted；Secondly, voice communication system is believed the voice after encryption
Number it is compressed coding；Finally, the voice signal after compressed encoding is sent to recipient by voice communication system, realizes sender
Voice communication between recipient.But, if be encrypted using digital encryption method in said process, because numeral adds
Decryption method cannot keep the phonetic feature of voice signal, can cause to lose voice messaging in the voice signal after compressed encoding, make
Obtaining recipient cannot obtain complete voice signal.
In the prior art, can be solved the above problems using following two methods, specifically included：
First method：First, coding is compressed to the voice signal that sender sends；Secondly, digital encryption is used
Method is encrypted to the voice signal after compression, and the voice signal after being encrypted；Finally, will be encrypted using data channel
To recipient, the data channel can be 3G/4G networks to transmitting voice signal afterwards, or other IP networks；
Second method：First, voice communication system is changed；Secondly, based on amended voice communication system, will send
The ciphering process and compression encoding process of the voice signal that side sends are combined with each other, i.e., encryption is combined in compression encoding process
In；Finally, using amended voice communication system by transmitting voice signal to recipient.
Above two method is being encrypted transmission to voice signal, or voice signal is encrypted and compressed encoding
When, can be with manual control so that the phonetic feature of voice signal can be kept, so, can be made using above two method
Must be sent in the voice signal of recipient information of not losing, so solve the recipient of above-mentioned record cannot receive it is complete
The problem of voice signal.
But, it has been investigated that, at least there is problems with above two method：
For first method, the voice signal after encryption is transmitted using data channel, it is excessive to there is data channel time delay,
And the problem of network adaptability difference；
For second method, the ciphering process and compression encoding process of voice signal are combined, so, in transmission
, it is necessary to customized communication terminal and change communication service flow process during voice signal.
And the speech ciphering method that the embodiment of the present application is provided, needing the voice signal for sending to get according to sender
After speech frame to be encrypted, according to the pitch parameter of the speech frame, searched with phase from speech database according to preset rules
Speech frame is encrypted with an at least frame of pitch parameter, and the speech frame to be encrypted is carried out using the encryption speech frame for finding
Encryption, this way it is not necessary to extra algorithm time delay, complexity is relatively low, and flexibility preferably, can not only solve to deposit in the prior art
Voice signal is encrypted after recompress coding when the problem lost of caused voice messaging, above-mentioned two can also be avoided
Plant problem present in solution.
Technical scheme is clearly and completely retouched with reference to the application specific embodiment and corresponding accompanying drawing
State.Obviously, described embodiment is only some embodiments of the present application, rather than whole embodiments.Based in the application
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to the scope of the application protection.
It should be noted that in the embodiment of the present application, the voice communication system can use voice compression coding
Digital voice communication system.After the speech frame after being encrypted, the voice communication system is to encryption for the embodiment of the present application
When speech frame afterwards is compressed coding, it is possible to use waveform coding voice compression algorithm, it is also possible to use parameter coding voice
Compression algorithm, can also use hybrid coding voice compression algorithm.As a kind of preferably mode, can be in the voice communication
Coding is compressed to the speech frame after encryption using the waveform coding voice compression algorithm in system.
Below in conjunction with accompanying drawing, the technical scheme that each embodiment of the application is provided is described in detail.
Embodiment 1
A kind of schematic flow sheet of speech ciphering method that Fig. 1 is provided for the embodiment of the present application, methods described is as described below.
The executive agent of the embodiment of the present application can be voice sender (hereinafter referred to as sender).
Step 101：Obtain speech frame to be encrypted.
In a step 101, sender is when needing for voice signal to be sent to recipient, the language that can be sent as needed
Message number acquires speech frame to be encrypted.
Specifically, sender, can be to the voice signal of needs transmission when needing for voice signal to be sent to recipient
Sub-frame processing is carried out, to obtain at least one speech frame to be encrypted.
It should be noted that in the embodiment of the present application, sender carries out sub-frame processing in the voice signal to needing to send
When, sub-frame processing can be carried out according to default frame length, with obtain frame length all same at least one speech frame to be encrypted.Its
In, the default frame length can determine according to actual conditions, be not specifically limited here.
In the embodiment of the present application, sender, can be according to the frame of default frame length one when speech frame to be encrypted is obtained
Obtained in real time one frame, wherein, the speech frame to be encrypted that sender obtains can be one, or multiple, sheet
Illustrated as a example by one of them speech frame to be encrypted for obtaining encryption in application embodiment.
Step 102：According to the pitch parameter of the speech frame to be encrypted, being searched from speech database has the base
The encryption speech frame of sound parameter.
In a step 102, sender is after the speech frame to be encrypted is obtained, it may be determined that the voice to be encrypted
The pitch parameter of frame, it is determined that after the pitch parameter of the speech frame to be encrypted, can be according to the pitch parameter, from voice
The encryption speech frame with the pitch parameter is searched in database, in order to use the encryption speech frame to described to be encrypted
Speech frame be encrypted.
In the embodiment of the present application, sender can carry out pitch Detection to the speech frame to be encrypted, be examined by fundamental tone
Survey the pitch parameter for determining the speech frame to be encrypted.Wherein, the pitch parameter can be the fundamental frequency of speech frame,
Can be the pitch period of speech frame, be not specifically limited.The embodiment of the present application can be with the pitch parameter as pitch period
As a example by illustrate.
It should be noted that the embodiment of the present application can be predefined obtains the speech database, and by the voice
Database purchase to described sender (speech database in actual applications, being stored between different senders can with identical,
Can be with difference), different pitch parameter and the encryption language with the pitch parameter can be included in the speech database
Sound frame.
Specifically, the embodiment of the present application can in the following manner be predefined and obtain the speech database, including：
Various different types of speech frames are obtained in advance, and polytype speech frame here can be from different type
The speech frame of speaker, wherein, the purpose for obtaining different types of speech frame is to obtain the language with different pitch parameters
Sound frame.
After various types of speech frames are obtained, pitch Detection can be carried out to each speech frame, determine each language
The pitch parameter of sound frame, and the speech frame with identical pitch parameter is divided into a class, so, multiple fundamental tone ginsengs can be obtained
Number and corresponding one or more speech frames of each pitch parameter.
At this point it is possible to by one or more speech frames with identical pitch parameter and the pitch parameter correspondence store to
In the speech database.The speech frame stored in the speech database is the encryption speech frame.
So, sender is getting speech frame to be encrypted, and determines the pitch parameter of the speech frame to be encrypted
Afterwards, the encryption speech frame with the pitch parameter can be searched from the speech database according to the pitch parameter.
Specifically, sender will can deposit in the pitch parameter of the speech frame to be encrypted, with the speech database
The pitch parameter of storage is matched, and when the match is successful, can obtain the encryption speech frame with the pitch parameter.
In actual applications, the encryption speech frame that sender finds from the speech database can be one,
Can be multiple, be not specifically limited, the embodiment of the present application is illustrated so that the encryption speech frame for finding is multiple as an example.
Step 103：According to preset rules, at least one is selected to encrypt voice from the encryption speech frame for finding
Frame.
In step 103, sender obtains being encrypted with the pitch parameter identical of the speech frame to be encrypted in lookup
After speech frame, one or more encryption voices can be selected in the encryption speech frame obtained from lookup according to preset rules
Frame, in order to be encrypted to the speech frame to be encrypted using the encryption speech frame of selection.
In the embodiment of the present application, the preset rules are made an appointment for voice sender with phonetic incepting side, described default
Rule is used for the selection at least one from the encryption speech frame with identical pitch parameter in the speech database and encrypts language
Sound frame.The embodiment of the present application is not specifically limited to the concrete form of the preset rules.
It should be noted that in the embodiment of the present application, sender according to the preset rules Choice encryption speech frame mesh
, it is that the speech frame after the encryption sent to sender for the ease of recipient is decrypted.Specifically, sender is from institute's predicate
Searched in sound database after obtaining the encryption speech frame, wherein one or more encryption voices can be selected according to preset rules
Frame, so, the recipient, can be according to identical preset rules, it is determined that for solving after the speech frame after receiving encryption
Close speech frame, and then realize the decryption to the speech frame after encryption.
In actual applications, if the encryption speech frame for finding is one, the encryption language can be directly selected
Sound frame；If the encryption speech frame for finding is multiple, wherein at least one can be selected according to the preset rules
Encryption speech frame, in order to be encrypted to speech frame to be encrypted according to the encryption speech frame of selection.
Sender selects at least one to encrypt speech frame according to preset rules from the encryption speech frame for finding,
Including：
It is determined that the encryption speech frame with the pitch parameter found from the speech database；
According to preset rules, it is determined that treating the mark of the encryption speech frame of selection；
According to the mark, encryption voice corresponding with the mark is selected from the encryption speech frame for finding
Frame.
That is, sender according to preset rules selection at least one when speech frame is encrypted：
It is possible, firstly, to determine the encryption speech frame found from the speech database, specific method may refer to
State the content described in step 102；
Secondly, determined to treat the mark of the encryption speech frame of selection according to preset rules, wherein, the mark can be described
Speech database to identical pitch parameter one or more encryption speech frames numbering, or other be used for distinguish
The information of one or more the encryption speech frames with identical pitch parameter, is not specifically limited, the mark that sender determines here
Knowledge can be one, or multiple, also be not specifically limited here；
Finally, according to the mark, encryption voice corresponding with the mark is selected from the encryption speech frame for finding
Frame.
Used as a kind of alternatively mode, sender is described pre- when the mark of encryption speech frame is determined according to preset rules
If rule can be preset-key, and according to the preset-key, the mark of encryption speech frame be determined according to preset algorithm, send
Side from the encryption speech frame for finding according to the mark it is determined that after mark, can select corresponding with the mark
Encryption speech frame.
For example, for speech frame a to be encrypted, sender according to its pitch parameter, from the speech database
Lookup obtains encryption speech frame b, c, d, e and f with the pitch parameter, wherein, the speech database is to encryption voice
The numbering of frame b, c, d, e and f is respectively 1,2,3,4 and 5, and now, sender is calculated according to preset-key needs selection
The numbering for encrypting speech frame is 2 and 3, then, sender with Choice encryption speech frame c and d, and encryption speech frame c and d can be made
It is the encryption speech frame being encrypted to speech frame a to be encrypted.
It should be noted that sender according to preset algorithm according to preset-key when the mark is determined, can be to institute
Preset algorithm is stated to be configured so that it is determined that the mark within a preset range, in the preset range include the voice number
According to the mark of the encryption speech frame in storehouse.
For example, when the numbering for being designated encryption speech frame, the numbering of the encryption speech frame in the speech database
When scope is 1-10, the preset algorithm can be configured so that according to the preset-key, according to the preset algorithm
The scope of the mark for determining is between 1-10.
Step 104：According at least one encryption speech frame of selection, the speech frame to be encrypted is added
It is close, the speech frame after being encrypted.
At step 104, sender, can be according to the institute of selection after selection obtains at least one encryption speech frame
At least one encryption speech frame is stated, the speech frame to be encrypted is encrypted, and the speech frame after being encrypted.
In the embodiment of the present application, sender encrypts speech frame according to described at least one of selection, to described to be encrypted
Speech frame is encrypted, including：
Linear operation is carried out with the speech frame to be encrypted by least one encryption speech frame that will be selected, it is right
The speech frame to be encrypted is encrypted.
Wherein, the linear operation can enter described at least one encryption speech frame with the speech frame to be encrypted
Row linear superposition.
It should be noted that for the ease of described at least one encryption speech frame is carried out with the speech frame to be encrypted
Linear superposition, in the embodiment of the present application, the frame length of the speech frame to be encrypted needs the frame with the encryption speech frame for finding
Length is identical.Specifically, sender is described default when the voice signal for needing to send is carried out into sub-frame processing according to default frame length
Frame length need it is identical with the frame length of the encryption speech frame included in the speech database, in this manner it is achieved that by the encryption
The linear superposition of speech frame and the speech frame to be encrypted.
If for example, the frame length of the encryption speech frame stored in the speech database is 10ms, then, sender needs to press
Sub-frame processing is carried out to the voice signal for needing to send according to default frame length 10ms, and obtains at least one frame length to be treating for 10ms
The speech frame of encryption；If the frame length of the encryption speech frame stored in the speech database is 20ms, then, sender needs to press
Sub-frame processing is carried out to the speech frame for needing to send according to default frame length 20ms, and obtains at least one frame length to be the to be added of 20ms
Close speech frame.
So, sender is to the speech frame to be encrypted after being encrypted, the speech frame after being encrypted.This
When, the speech frame after encrypting can be compressed coded treatment by the voice communication system, as a kind of preferably mode,
Coding can be compressed using waveform coding voice compression algorithm, after the speech frame after obtaining compressed encoding, will can be somebody's turn to do
Speech frame is sent to the recipient, with the voice communication between realization and recipient.
Research has shown that, the speech frame after the speech ciphering method provided using the embodiment of the present application is encrypted, by non-
After formal audition test, the content of the speech frame after encryption cannot be identified, in addition, the speech frame after to encryption
Signal quality when carrying out objective evaluation, the evaluation result that signal quality drops significantly to elusive degree can be obtained.
As can be seen here, the speech ciphering method that the embodiment of the present application is provided has preferable cipher round results.
It should be noted that in the embodiment of the present application, when the voice communication system is calculated using waveform coding compress speech
During method, the waveform of voice can be well kept due to waveform encoding algorithm, and the voice encryption that the embodiment of the present application is provided is calculated
Method is also to carry out linear operation to the waveform of speech frame, therefore, the speech ciphering method that the embodiment of the present application is provided is not easily susceptible to
The influence of waveform encoding algorithm.
When the voice communication system uses parameter coding or hybrid coding voice compression algorithm, because speech waveform exists
Occur than larger change before and after coding and decoding, therefore, the Voice Encryption algorithm that the embodiment of the present application is provided is vulnerable to volume
The influence of code algorithm, now, the voice communication system can be right before recipient is decrypted to the speech frame after encryption
Speech frame after encryption is further processed, to reduce influence of the encryption algorithm to voice.
The technical scheme that the embodiment of the present application is provided, when being encrypted to speech frame to be encrypted, according to be encrypted
The pitch parameter of speech frame, determines the encryption speech frame with identical pitch parameter, according to preset rules from speech database
Selection wherein at least one encryption speech frame, and speech frame to be encrypted is encrypted according to the encryption speech frame of selection.This
Sample, because the embodiment of the present application to speech frame to be encrypted when being encrypted, according to the pitch parameter of speech frame to be encrypted
Choice encryption speech frame is encrypted, and the speech frame after encryption can be effectively ensured in terms of existing technologies in compressed encoding
The integrality of voice messaging afterwards so that recipient can obtain the language that sender sends according to the speech frame after the encryption for receiving
Sound frame.
Embodiment 2
A kind of schematic flow sheet of voice decryption method that Fig. 2 is provided for the embodiment of the present application, methods described is as described below.
The executive agent of the embodiment of the present application can be phonetic incepting side (hereinafter referred to as recipient).
Step 201：Receive the speech frame after the encryption that sender sends.
In step 201, after the speech frame after sender is encrypted, can be by the voice communication system to reception
Side sends the speech frame after the encryption, and now, recipient can receive the speech frame after the encryption of described sender transmission.
Wherein, the recipient can receive the speech frame after multiple encryptions of sender's transmission, implement in the application
In example, illustrated by taking the speech frame decryption after being encrypted to one of them as an example.
Step 202：According to the pitch parameter of the speech frame after the encryption, being searched from speech database has the base
The decrypted voice frame of sound parameter.
In step 202., recipient is after the speech frame after receiving the encryption, it may be determined that the language after the encryption
The pitch parameter of sound frame, it is determined that after the pitch parameter of speech frame after the encryption, can be according to the pitch parameter, from language
The decrypted voice frame with the speech parameter is searched in sound database, in order to use the decrypted voice frame to the encryption
Speech frame afterwards is decrypted.
Specifically, recipient can enter after the speech frame after receiving the encryption to the speech frame after the encryption
Row pitch Detection, and determine the pitch parameter of the speech frame after the encryption, the pitch parameter can be fundamental frequency, also may be used
To be pitch period, this is not specifically limited.The embodiment of the present application can be carried out so that the pitch parameter is as pitch period as an example
Explanation.
It should be noted that the method that the embodiment of the present application can be recorded by above-described embodiment 1 determines to obtain institute's predicate
Sound database, and the speech data library storage to the recipient (in actual applications, is stored between different recipients
Speech database can be with identical, it is also possible to different), comprising different pitch parameter and with described in the speech database
The decrypted voice frame of pitch parameter.
Recipient described in the embodiment of the present application storage the speech database with it is described described in above-described embodiment 1
The speech database of sender's storage is identical, and the speech frame after the encryption that receives is solved in order to recipient
It is close, wherein, the encryption speech frame described in embodiment 1 can be considered as decrypted voice frame for recipient.
So, recipient, can be from the speech database it is determined that after the pitch parameter of speech frame after the encryption
Middle lookup obtains the decrypted voice frame with the pitch parameter.
Specifically, recipient it is determined that encryption after speech frame pitch parameter after, can be by the pitch parameter and institute
State the pitch parameter stored in speech database to be matched, after the match is successful, it may be determined that with the language after the encryption
The decrypted voice frame of the pitch parameter of sound frame.
Step 203：According to preset rules, at least one decrypted voice is selected from the decrypted voice frame for finding
Frame.
In step 203, sender obtains being decrypted with the pitch parameter identical of the speech frame after the encryption in lookup
After speech frame, one or more decrypted voices can be selected in the decrypted voice frame obtained from lookup according to preset rules
Frame, in order to be decrypted to the speech frame after the encryption using the decrypted voice frame of selection.
Preset rules in the embodiment of the present application are made an appointment for voice sender with phonetic incepting side, its specific shape
Formula is equal to the preset rules described in above-described embodiment 1, in addition, the preset rules of the embodiment of the present application be used for from
In the speech database at least one decrypted voice frame is selected in the decrypted voice frame with identical pitch parameter.
So, the content recorded based on above-described embodiment 1, described sender is added to the speech frame to be encrypted
When close, it is encrypted according to preset rules Choice encryption speech frame, speech frame of the recipient after to the encryption is decrypted
When, the decrypted voice frame that decryption needs can be determined according to identical preset rules, due to described sender and the recipient
Using identical preset rules, therefore, the recipient can search the solution obtained for decrypting from the speech database
Close speech frame.
For example, the encryption speech frame that described sender determines to be encrypted speech frame a to be encrypted according to preset-key
Numbering be 2 and 3, and using in the speech database with identical pitch parameter numbering be 2 encryption speech frame c, with
And the encryption speech frame d that numbering is 3 is encrypted to speech frame a to be encrypted, then, the recipient is after encryption is received
Speech frame a1, and determine the speech frame a after encryption1Pitch parameter after, according to identical preset-key can determine solution cipher
The numbering of sound frame is 2 and 3, and now, recipient can search the decryption with identical pitch parameter from the speech database
There is the decrypted voice frame of numbering 2 and numbering 3 in speech frame, i.e. decrypted voice frame c and decrypted voice frame d, and by decrypted voice
Frame c and decrypted voice frame d is used as to the speech frame a after encryption1The decrypted voice frame of decryption.
Step 204：According at least one decrypted voice frame of selection, the speech frame after the encryption is solved
It is close, the speech frame after being decrypted.
In step 204, recipient, can be according to the institute of selection after selection obtains at least one decrypted voice frame
At least one decrypted voice frame is stated, the speech frame after the encryption is decrypted.
Specifically, sender enters according at least one decrypted voice frame of selection to the speech frame after the encryption
Row decryption, including：
By the way that at least one decrypted voice frame for selecting is carried out into linear inverse operation with the speech frame after the encryption,
Voice after the encryption is decrypted.
The linear operation inverse operation each other that the linear inverse operation is recorded with above-described embodiment, so, recipient can
The original speech frame that sender needs to send is obtained to decrypt.
It should be noted that speech frame of the recipient after to encryption is decrypted the speech frame after obtaining multiple decryption
Afterwards, the speech frame after the multiple decryption can be carried out postpositive disposal, it is prominent with eliminate that individual voice frame fundamental tone error causes
Hair noise frame, improves the signal quality of the speech frame after decryption.
The technical scheme that the embodiment of the present application is provided, recipient enters according to the pitch parameter of speech frame receiving sender
After speech frame after the encryption that row encryption is obtained, according to the pitch parameter of the speech frame after encryption, determine from speech database
Decrypted voice frame with identical pitch parameter, according to the preset rules predetermined in advance with sender, selects the frame of wherein at least one
Decrypted voice frame, and the speech frame after encryption is decrypted according to the decrypted voice frame of selection.So, due to sender according to
The pitch parameter Choice encryption speech frame of speech frame is encrypted, it is ensured that speech frame after the encryption voice letter after compressed encoding
The integrality of breath, therefore, recipient can decrypt and obtain the complete of sender's transmission according to the speech frame after the encryption for receiving
Speech frame.
Embodiment 3
A kind of voice encryption and the schematic flow sheet of decryption method that Fig. 3 is provided for the embodiment of the present application, methods described is such as
It is lower described.The embodiment of the present application is illustrated so that sender sends a speech frame to be encrypted to recipient as an example.
Step 301：Sender obtains speech frame to be encrypted.
Step 302：Sender determines the pitch parameter of the speech frame to be encrypted.
Step 303：Sender searches adding for the pitch parameter with the speech frame to be encrypted from speech database
Close speech frame.
Step 304：Sender determines the first mark according to preset-key, and from the encryption speech frame for finding selection with
Described first identifies corresponding encryption speech frame.
Step 305：Sender is encrypted according to the encryption speech frame of selection to the speech frame to be encrypted,
Speech frame after being encrypted.
Step 306：Speech frame after encryption is sent to recipient by sender.
Step 307：Recipient receives the speech frame after the encryption that sender sends.
Step 308：Recipient determines the pitch parameter of the speech frame after the encryption.
Step 309：Recipient searches the pitch parameter with the speech frame after the encryption from the speech database
Decrypted voice frame.
Step 310：Recipient determines first mark according to the preset-key, and decrypts frame from the voice for finding
It is middle to select decrypted voice frame corresponding with the described first mark.
Step 311：Recipient is decrypted according to the decrypted voice frame of selection to the speech frame after the encryption,
Speech frame after being decrypted.
The technical scheme that the embodiment of the present application is provided, the pitch parameter Choice encryption speech frame according to speech frame to be encrypted
It is encrypted, the integrality of the speech frame voice messaging after compressed encoding after encryption can be effectively ensured so that recipient can
The speech frame that sender sends is obtained with according to the speech frame after the encryption for receiving.
Embodiment 4
A kind of structural representation of voice encryption equipment that Fig. 4 is provided for the embodiment of the present application, the voice encryption equipment
Including：Acquiring unit 41, searching unit 42, select unit 43 and ciphering unit 44, wherein：
Acquiring unit 41, obtains speech frame to be encrypted；
Searching unit 42, according to the pitch parameter of the speech frame to be encrypted, being searched from speech database has institute
The encryption speech frame of pitch parameter is stated, comprising different pitch parameter and with the pitch parameter in the speech database
Encryption speech frame；
Select unit 43, according to preset rules, selects from the encryption speech frame that the searching unit 42 finds
At least one encryption speech frame；
Ciphering unit 44, according at least one encryption speech frame that the select unit 43 is selected, to described to be added
Close speech frame is encrypted, the speech frame after being encrypted.
In the embodiment of the present application, the preset rules are made an appointment for voice sender with phonetic incepting side, described default
Rule is used for the selection at least one from the encryption speech frame with identical pitch parameter in the speech database and encrypts
Speech frame.
The select unit 43 is selected according to preset rules from the encryption speech frame that the searching unit 42 finds
At least one encryption speech frame is selected, including：
It is determined that the encryption speech frame with the pitch parameter found from the speech database；
According to preset rules, it is determined that treating the mark of the encryption speech frame of selection；
According to the mark, encryption voice corresponding with the mark is selected from the encryption speech frame for finding
Frame.
At least one encryption speech frame that the ciphering unit 44 is selected according to the select unit 43, treats to described
The speech frame of encryption is encrypted, including：
Linear operation is carried out with the speech frame to be encrypted by least one encryption speech frame that will be selected, it is right
The speech frame to be encrypted is encrypted.
It should be noted that the voice encryption equipment that the embodiment of the present application is provided can be realized by hardware mode, also may be used
Realized with by software mode, do not limited here.
Embodiment 5
A kind of structural representation of voice decryption device that Fig. 5 is provided for the embodiment of the present application, the voice decryption device
Including：Receiving unit 51, searching unit 52, select unit 53 and decryption unit 54, wherein：
Receiving unit 51, receives the speech frame after the encryption that sender sends；
Searching unit 52, according to the pitch parameter of the speech frame after the encryption, being searched from speech database has institute
The decrypted voice frame of pitch parameter is stated, comprising different pitch parameter and with the pitch parameter in the speech database
Decrypted voice frame；
Select unit 53, according to preset rules, selects from the decrypted voice frame that the searching unit 52 finds
At least one decrypted voice frame；
Decryption unit 54, according at least one decrypted voice frame that the select unit 53 is selected, to the encryption
Speech frame afterwards is decrypted, the speech frame after being decrypted.
In the embodiment of the present application, the preset rules are made an appointment for voice sender with phonetic incepting side, described default
Rule is used for the solution of selection at least one cipher from the decrypted voice frame with identical pitch parameter in the speech database
Sound frame.
The select unit 53 is selected according to preset rules from the decrypted voice frame that the searching unit 52 finds
At least one decrypted voice frame is selected, including：
It is determined that the decrypted voice frame with the pitch parameter found from the speech database；
According to preset rules, it is determined that treating the mark of the decrypted voice frame of selection；
According to the mark, selected from the decrypted voice frame for finding and the corresponding decrypted voice of the mark
Frame.
At least one decrypted voice frame that the decryption unit 54 is selected according to the select unit 53, adds to described
Speech frame after close is decrypted, including：
By the way that at least one decrypted voice frame for selecting is carried out into linear inverse operation with the speech frame after the encryption,
Voice after the encryption is decrypted.
It should be noted that the voice decryption device that the embodiment of the present application is provided can be realized by hardware mode, also may be used
Realized with by software mode, do not limited here.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the application can be used and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) is produced
The form of product.
The application is the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and internal memory.
Internal memory potentially includes the volatile memory in computer-readable medium, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only storage (ROM) or flash memory (flash RAM).Internal memory is computer-readable medium
Example.
Computer-readable medium includes that permanent and non-permanent, removable and non-removable media can be by any method
Or technology realizes information Store.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus
Or any other non-transmission medium, can be used to store the information that can be accessed by a computing device.Defined according to herein, calculated
Machine computer-readable recording medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
Also, it should be noted that term " including ", "comprising" or its any other variant be intended to nonexcludability
Comprising so that process, method, commodity or equipment including a series of key elements not only include those key elements, but also wrapping
Include other key elements being not expressly set out, or also include for this process, method, commodity or equipment is intrinsic wants
Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described
Also there is other identical element in process, method, commodity or the equipment of element.
It will be understood by those skilled in the art that embodiments herein can be provided as method, system or computer program product.
Therefore, the application can be using the embodiment in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Form.And, the application can be used to be can use in one or more computers for wherein including computer usable program code and deposited
The shape of the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
Embodiments herein is the foregoing is only, the application is not limited to.For those skilled in the art
For, the application can have various modifications and variations.It is all any modifications made within spirit herein and principle, equivalent
Replace, improve etc., within the scope of should be included in claims hereof.
Claims (10)
1. a kind of speech ciphering method, it is characterised in that including：
Obtain speech frame to be encrypted；
According to the pitch parameter of the speech frame to be encrypted, the encryption with the pitch parameter is searched from speech database
Speech frame, includes different pitch parameter and the encryption speech frame with the pitch parameter in the speech database；
According to preset rules, at least one is selected to encrypt speech frame from the encryption speech frame for finding；
According at least one encryption speech frame of selection, the speech frame to be encrypted is encrypted, after being encrypted
Speech frame.
2. speech ciphering method as claimed in claim 1, it is characterised in that
The preset rules are made an appointment for voice sender with phonetic incepting side, and the preset rules are used for from the voice number
Speech frame is encrypted according to selection at least one in the encryption speech frame with identical pitch parameter in storehouse.
3. speech ciphering method as claimed in claim 2, it is characterised in that according to preset rules, described in find plus
Speech frame is encrypted in selection at least one in close speech frame, including：
It is determined that the encryption speech frame with the pitch parameter found from the speech database；
According to preset rules, it is determined that treating the mark of the encryption speech frame of selection；
According to the mark, encryption speech frame corresponding with the mark is selected from the encryption speech frame for finding.
4. the speech ciphering method as described in any one of claims 1 to 3, it is characterised in that at least according to selection
Individual encryption speech frame, is encrypted to the speech frame to be encrypted, including：
Linear operation is carried out with the speech frame to be encrypted by least one encryption speech frame that will be selected, to described
Speech frame to be encrypted is encrypted.
5. a kind of voice decryption method, it is characterised in that including：
Receive the speech frame after the encryption that sender sends；
According to the pitch parameter of the speech frame after the encryption, the decryption with the pitch parameter is searched from speech database
Speech frame, includes different pitch parameter and the decrypted voice frame with the pitch parameter in the speech database；
According to preset rules, at least one decrypted voice frame is selected from the decrypted voice frame for finding；
According at least one decrypted voice frame of selection, the speech frame after the encryption is decrypted, after being decrypted
Speech frame.
6. voice decryption method as claimed in claim 5, it is characterised in that
The preset rules are made an appointment for voice sender with phonetic incepting side, and the preset rules are used for from the voice number
According to selecting at least one decrypted voice frame in the decrypted voice frame with identical pitch parameter in storehouse.
7. voice decryption method as claimed in claim 6, it is characterised in that according to preset rules, from the solution for finding
At least one decrypted voice frame is selected in close speech frame, including：
It is determined that the decrypted voice frame with the pitch parameter found from the speech database；
According to preset rules, it is determined that treating the mark of the decrypted voice frame of selection；
According to the mark, decrypted voice frame corresponding with the mark is selected from the decrypted voice frame for finding.
8. the voice decryption method as described in any one of claim 5 to 7, it is characterised in that at least according to selection
Individual decrypted voice frame, is decrypted to the speech frame after the encryption, including：
By the way that at least one decrypted voice frame for selecting is carried out into linear inverse operation with the speech frame after the encryption, to institute
The voice after encryption is stated to be decrypted.
9. a kind of voice encryption equipment, it is characterised in that including：
Acquiring unit, obtains speech frame to be encrypted；
Searching unit, according to the pitch parameter of the speech frame to be encrypted, being searched from speech database has the fundamental tone
The encryption speech frame of parameter, includes different pitch parameters and the encryption with the pitch parameter in the speech database
Speech frame；
Select unit, according to preset rules, at least one is selected from the encryption speech frame that the searching unit finds
Encryption speech frame；
Ciphering unit, according at least one encryption speech frame that the select unit is selected, to the voice to be encrypted
Frame is encrypted, the speech frame after being encrypted.
10. a kind of voice decryption device, it is characterised in that including：
Receiving unit, receives the speech frame after the encryption that sender sends；
Searching unit, according to the pitch parameter of the speech frame after the encryption, being searched from speech database has the fundamental tone
The decrypted voice frame of parameter, includes different pitch parameters and the decryption with the pitch parameter in the speech database
Speech frame；
Select unit, according to preset rules, at least one is selected from the decrypted voice frame that the searching unit finds
Decrypted voice frame；
Decryption unit, according at least one decrypted voice frame that the select unit is selected, to the voice after the encryption
Frame is decrypted, the speech frame after being decrypted.
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| CN111818519A (en) * | 2020-07-16 | 2020-10-23 | 郑州信大捷安信息技术股份有限公司 | End-to-end voice encryption and decryption method and system |
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| CN106878299B (en) | 2019-06-11 |
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