CN106604273A - Mobile phone voice encrypted communication method based on secure voice SOC chip - Google Patents
Mobile phone voice encrypted communication method based on secure voice SOC chip Download PDFInfo
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- CN106604273A CN106604273A CN201611202243.9A CN201611202243A CN106604273A CN 106604273 A CN106604273 A CN 106604273A CN 201611202243 A CN201611202243 A CN 201611202243A CN 106604273 A CN106604273 A CN 106604273A
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- Prior art keywords
- mobile phone
- soc chip
- voice
- secure voice
- secure
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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]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a mobile phone voice encrypted communication method based on a secure voice SOC chip. Processes including packing, SDIO protocol transmission, encryption, decryption, and unpacking are realized, and there is no need to change the communication service function of mobile phones. Voice data and security mechanism processing are combined seamlessly. In the implementation framework of basic call service, secure encryption and decryption operation is introduced using a hardware mechanism. Thus, a feasible, convenient and economical solution is provided for the realization of a secure mobile phone call service. The core chip of the invention can implement an SM4 block cipher algorithm, complete both data encryption and decryption and functions like data integrity protection and signaling forgery prevention, and build a complete security system for the voice communication application of mobile phones.
Description
Technical field
The present invention relates to a kind of mobile phone speech encryption communication method based on SDIO interface security voice SoC chips.
Background technology
In recent years, " eavesdropping door " event frequently produced allows people to feel privacy immediately without depositing, and information security causes again everybody wide
General concern.Eavesdrop in the face of increasing mobile phone communication, note is read steathily, people are in the urgent need to a kind of safe mobile communication side
Formula.Meanwhile, army and Party and government offices face by the threat of hostile element's steal information at the moment, it may be said that the information security of the new period
War has been fired.Information security has increased to the aspect of national strategy, and strengthen protecting information safety has become national strategy
Important step.
With development communication technologies, mobile phone speech communication becomes people's periodic traffic mode main.How effectively,
Simplicity ensures mobile communication safety, is the problem that must be solved at this stage.All it is by application software in existing safe mobile phone
Safe handling is carried out to speech data, based on the pure software safe handling scheme on operating system although realizing very simply,
But it is easy to be cracked, once being invaded by bogusware, cannot equally ensure the safety communication of speech data.
The content of the invention
In order to overcome the disadvantages mentioned above of prior art, the invention provides a kind of mobile phone based on secure voice SoC chip
The voice encryption means of communication, can simply and effectively realize the security protection of speech communication overall process between mobile phone, prevent in call
Hold by lawless person's eavesdropping, intercept, to mobile phone speech communication a complete security path system is built.In current information security
Hidden danger occurs again and again, people are more in the case of focusing on individual privacy, personal information security, having broad application prospects.
The technical solution adopted for the present invention to solve the technical problems is:A kind of mobile phone based on secure voice SoC chip
The voice encryption means of communication, including following content:
One frame primary voice data is transferred to secure voice SoC chip, secure voice SoC by mobile phone A by SDIO interfaces
Chip will receive voice signal and carry out package process first, and the speech data after then package is processed send security coprocessor
SM4 grouping algorithm encryptions are carried out, after the completion of operation to be encrypted, secure voice SoC chip again passes through ciphertext speech data
SDIO interfaces send mobile phone A to, and mobile phone A sends ciphertext speech data by push-to-talk handset B by cdma network;
Mobile phone B is received after ciphertext speech data, and by SDIO interfaces secure voice SoC chip is sent it to, safety
The ciphertext speech data for receiving is sent security coprocessor to carry out SM4 grouping algorithm decryption oprerations by voice SoC chip, and to solution
Close rear voice signal carries out unpacking process, is finally reduced into original voice signal, then the voice signal is passed through into SDIO interfaces
Send mobile phone B to, the primary speech signal is sent speaker to play by mobile phone B.
Compared with prior art, the positive effect of the present invention is:
The present invention is the complete mobile phone cipher speech communication scheme of secure voice SoC chip, realizes comprising package, SDIO
The processes such as protocol transmission, encryption, decryption, unpacking, and mobile phone communication service function need not be changed.The present invention realizes voice
The seamless combination that data and security mechanism are processed, in the framework that basic talk business is realized, using hardware mechanisms safety is introduced
Encryption and decryption is operated, to realize that a kind of safe mobile phone communication business provides practical, convenient, economic solution.
The acp chip of the present invention can realize SM4 block ciphers, not only perform the encryption and decryption of data, may be used also
To complete the functions such as data integrity protection, signaling anti-counterfeiting, a complete peace can be built to mobile phone speech communication applications
Entirety system.Under current Situation on Information Security, have broad application prospects.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 secure voice SoC chip Organization Charts;
Fig. 2 mobile phone speech communication security processes path;
Fig. 3 plaintext speech data SM4 algorithm for encryption flow processs;
Fig. 4 ciphertext speech data SM4 algorithms decrypt flow process.
Specific embodiment
The core devices of the present invention are secure voice SoC chips, and the internal structure of the chip is as shown in figure 1, it is internal main
Consist of:Other interface modules such as CPU processor, on-chip memory, secure processing module, SDIO interfaces, GPIO.Hardware reality
Now go up, secure voice SoC chip can be packaged into TF cards form and access mobile phone TF interface decks (TF card interfaces and SDIO interface physicals
It is consistent in realization), wherein:
(1) embedded processor
CK803, is the domestic embedded type CPU core of 32 high-performance low-power-consumptions of embedded system application.It is main to
Operation SoC chip driver and speech business program, and realize the management and dispatching of internal resource.
(2) security coprocessor
Support symmetry algorithm and hash algorithm.
(3) SDIO interfaces
Meet the agreement of SDIO cards 2.0, the frequency that Full-Speed mode is supported is up to 25Mhz, and fast mode supports 50Mhz, mould
Block internal support CRC7 check value function, supports to hang and re-enumeration operation;
(4) NAND Flash interface modules
Compatible ONFI.x and 3.0 standards, support main flow NAND Flash Memory.To extend the outer Flash storages of piece
Device, to meet more jumbo storage needs.
(5) randomizer in piece
Generating random number is supported, quality of random numbers hardware detection is supported.
(6) power managed controller
The each module clock of chip can be controlled by power managed module, support NORMAL, STOP mode of operation,
Hold external interrupt signal arousal function.
It is as shown in Figure 2 that mobile phone speech communication security based on secure voice SoC chip processes path.Mobile phone A is former by a frame
Beginning speech data is transferred to secure voice SoC chip by SDIO interfaces, and (here secure voice SoC chip is packaged into TF modules and connects
Enter mobile phone TF interface decks), secure voice SoC chip will receive voice signal and carry out package process first, then by package
Speech data after process send security coprocessor to carry out SM4 grouping algorithm encryptions.After the completion of operation to be encrypted, safe language
Ciphertext speech data is given mobile phone A by sound SoC chip by SDIO interfaces again, and ciphertext speech data is passed through CDMA nets by mobile phone A
Network is sent by push-to-talk handset B.
Mobile phone B is received after ciphertext speech data, and the safe SoC chip of voice is sent it to (in the same manner, by SDIO interfaces
Here secure voice SoC chip is packaged into TF modules and accesses mobile phone TF interface decks), secure voice SoC chip will be received
Ciphertext speech data send security coprocessor to carry out SM4 grouping algorithm decryption oprerations, and voice signal after decryption is unpacked
Process, be finally reduced into original voice signal, then the voice signal is sent to mobile phone B by SDIO interfaces, mobile phone B should
Primary speech signal send speaker to play, that is, complete frame encryption voice call.
Require to be in plain text 128bit integral multiples due to SM4 grouping algorithms, and each frame speech data length that mobile phone is issued
It is random, when being encrypted, package process need to be carried out to voice data, is discontented with the speech data frame of 128bit multiples
128bit integral multiples need to be filled into, send security coprocessor to be encrypted after the completion of package, Fig. 3 is voice signal data
SM4 algorithm for encryption handling processes.In the same manner, for speech data decryption oprerations, after the completion of ciphertext speech data decryption processing, need
Unpacking process is carried out to VoP, the packet data of 128bit integral multiples original speech data frame could be reduced to.
Ciphertext speech data SM4 algorithms decryption flow process is as shown in Figure 4.
Plaintext audio encryption flow process is as follows:
(1) SDIO interfaces obtain the plaintext speech data of a frame random length;
(2) the frame speech data is judged whether for the integral multiple of 128bit, if not 128bit integral multiples, fill data
0 arrives 128bit integral multiples;
(3) security coprocessor input-buffer is sent by DMA by the speech data that filling is finished;
(4) security coprocessor module is configured, and enables security coprocessor, be encrypted operation;
(5) whether cycle detection security coprocessor cryptographic operation completes;
(6) SDIO interfaces are sent the speech data for completing is encrypted into by DMA, mobile phone is transferred to by SDIO interfaces.
Ciphertext voice signal decryption flow process is as follows:
(1) SDIO interfaces obtain the speech data of frame encryption;
(2) security coprocessor input-buffer is sent by the speech data by DMA interface;
(3) security coprocessor module is configured, and enables security coprocessor, be decrypted operation;
(4) whether cycle detection security coprocessor decryption oprerations complete;
(5) speech data after decryption is obtained, whether detection speech data is there are 0 data of filling, if having, by the 0 of filling
Data are removed.
(6) after DMA will be decrypted, go the speech data filled to send into SDIO interfaces, transmitted by SDIO interfaces in one's hands
Machine.
Claims (9)
1. a kind of mobile phone speech encryption communication method based on secure voice SoC chip, it is characterised in that:Including following content:
One frame primary voice data is transferred to secure voice SoC chip, secure voice SoC chip by mobile phone A by SDIO interfaces
Voice signal will be received carries out first package process, and the speech data after then package is processed send security coprocessor to carry out
SM4 grouping algorithm encryptions, after the completion of operation to be encrypted, ciphertext speech data is passed through again secure voice SoC chip SDIO
Interface sends mobile phone A to, and mobile phone A sends ciphertext speech data by push-to-talk handset B by cdma network;
Mobile phone B is received after ciphertext speech data, and by SDIO interfaces secure voice SoC chip, secure voice are sent it to
The ciphertext speech data for receiving is sent security coprocessor to carry out SM4 grouping algorithm decryption oprerations by SoC chip, and to decryption after
Voice signal carries out unpacking process, is finally reduced into original voice signal, then the voice signal is transmitted by SDIO interfaces
To mobile phone B, the primary speech signal is sent speaker to play by mobile phone B.
2. the mobile phone speech encryption communication method based on secure voice SoC chip according to claim 1, its feature exists
In:When secure voice SoC chip carries out package process, the speech data frame of discontented 128bit integral multiples need to fill 0 to 128bit
Integral multiple.
3. the mobile phone speech encryption communication method based on secure voice SoC chip according to claim 1, its feature exists
In:Secure voice SoC chip carries out unpacking when processing, and 0 data filled in speech data are removed.
4. the mobile phone speech encryption communication method based on secure voice SoC chip according to claim 1, its feature exists
In:The CPU processor of the secure voice SoC chip is embedded processor, for running SoC chip driver and voice industry
Business program, and realize the management and dispatching of internal resource.
5. the mobile phone speech encryption communication method based on secure voice SoC chip according to claim 1, its feature exists
In:The SDIO interfaces meet the agreement of SDIO cards 2.0, and the frequency that Full-Speed mode is supported is up to 25Mhz, and fast mode is supported
50Mhz, inside modules support CRC7 check value functions, support to hang and re-enumeration operation.
6. the mobile phone speech encryption communication method based on secure voice SoC chip according to claim 1, its feature exists
In:The security coprocessor supports symmetry algorithm and hash algorithm.
7. the mobile phone speech encryption communication method based on secure voice SoC chip according to claim 1, its feature exists
In:The NAND Flash interface modules compatibility ONFI.x of the secure voice SoC chip and 3.0 standards, support main flow NAND
Flash Memory, to extend the outer flash storage of piece.
8. the mobile phone speech encryption communication method based on secure voice SoC chip according to claim 1, its feature exists
In:Randomizer supports generating random number and quality of random numbers hardware detection in the piece of the secure voice SoC chip.
9. the mobile phone speech encryption communication method based on secure voice SoC chip according to claim 1, its feature exists
In:The secure voice SoC chip is packaged into TF cards form and accesses mobile phone TF interface decks.
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CN104301289A (en) * | 2013-07-17 | 2015-01-21 | 中国银联股份有限公司 | Apparatus for security information interaction |
CN104581712A (en) * | 2014-12-25 | 2015-04-29 | 中国科学院信息工程研究所 | Encryption communication method and system of mobile terminal |
CN105471876A (en) * | 2015-12-02 | 2016-04-06 | 东莞见达信息技术有限公司 | Encryption communication method and device |
CN105610580A (en) * | 2016-03-25 | 2016-05-25 | 成都汇研科技有限公司 | External speech encryption device based on smart phone and implementation method thereof |
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CN202268936U (en) * | 2011-09-05 | 2012-06-06 | 天津光电通信技术有限公司 | Voice information encryption system of 3G mobile phone |
CN102413462A (en) * | 2011-11-21 | 2012-04-11 | 郑州信大捷安信息技术股份有限公司 | Method and system for improving safety of voice communication of mobile terminal system based on safety micro secure digital (TF) card |
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Application publication date: 20170426 |