CN108366370B - A kind of information transferring method quantifying privately owned asymmetric key based on radio channel characteristic - Google Patents
A kind of information transferring method quantifying privately owned asymmetric key based on radio channel characteristic Download PDFInfo
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- CN108366370B CN108366370B CN201810105180.8A CN201810105180A CN108366370B CN 108366370 B CN108366370 B CN 108366370B CN 201810105180 A CN201810105180 A CN 201810105180A CN 108366370 B CN108366370 B CN 108366370B
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004891 communication Methods 0.000 claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 238000012937 correction Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000004044 response Effects 0.000 claims description 14
- 238000007781 pre-processing Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 238000013139 quantization Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 238000000513 principal component analysis Methods 0.000 claims description 2
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
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- 238000005516 engineering process Methods 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0875—Generation of secret information including derivation or calculation of cryptographic keys or passwords based on channel impulse response [CIR]
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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]
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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
- H04L63/0442—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 wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Invention describes a kind of information transferring methods for quantifying privately owned asymmetric key based on radio channel characteristic.Radio channel characteristic is measured by communicating pair, extracts respective private cipher key.One side of communication carries out xor operation again after needing the information transmitted first to carry out channel coding using private cipher key pair, realize the encryption to transmission information.Recipient carries out xor operation using the received information of its private cipher key pair, realizes the decryption to transmission information.Due to the influence of wireless channel and equipment feature, the private cipher key of communicating pair may be asymmetric, that is, has certain difference.The information of recipient's decryption needs to reuse channel error correction decoding, solves correctly transmission information.It can not need to reconcile by additional information using this method and privacy amplification process, the security information of realization sharing wireless channel feature are transmitted.
Description
Technical Field
The invention relates to the technical field of information security transmission, in particular to an information transmission method based on a wireless channel characteristic quantization private asymmetric key.
Background
The physical layer security technology based on the wireless channel characteristics is mainly based on measuring the characteristics of a wireless channel, quantizing the characteristics into symmetric keys of two communication parties, and then encrypting information transmitted by an upper layer by using the keys. However, in an actual communication system, since there may be some difference between communication links of two communication parties, the obtained wireless channel characteristics are different. Therefore, in order to obtain a symmetric key, it is necessary to introduce an information reconciliation procedure in the conventional physical layer security technology based on the wireless channel characteristics, and both parties of communication exchange information reconciliation information to obtain a key that is consistent with both parties of communication. However, information reconciliation is introduced to reveal wireless channel characteristic information that is secret between both parties of communication inevitably. In order to solve the problem of leakage of secret wireless channel characteristic information of both parties caused by information reconciliation, both communicating parties need to further protect the security and randomness of the finally obtained key through a privacy amplification process. Therefore, these processes will increase the complexity of finally obtaining the key. In addition, in the conventional key generation technology system based on the wireless channel characteristics, channel error correction coding is often used for generating a symmetric key in consideration of being used in the process of information reconciliation. In the existing research, the combination of channel error correction coding and secure information transmission based on wireless channel feature key generation has not been considered.
Disclosure of Invention
In order to solve the existing problems, the invention provides an information transmission method for quantizing a private asymmetric key based on wireless channel characteristics, and the method can transmit required information to an opposite party in a safe way based on the wireless channel characteristics measured by two communication parties, thereby avoiding the information reconciliation and privacy amplification processes in the prior method for directly generating the key by the wireless channel characteristics, and having better practicability, and in order to achieve the purpose, the invention provides an information transmission method for quantizing the private asymmetric key based on the wireless channel characteristics, which comprises the following steps:
step A, the two communication parties A and B measure the channel characteristics of the channels from the two communication parties to the other communication parties through the pilot frequency sequences transmitted by the two communication parties respectively, and the two communication parties quantize the wireless channel characteristics obtained by the respective measurement into a private key, wherein the private key is an asymmetric key of the two communication parties;
b, the communication party A carries out channel error correction coding on the information to be transmitted after preprocessing, and generates a bit sequence after the channel error correction coding;
step C, the communication A side carries out coding operation on the bit sequence generated in the step B after channel error correction coding and the private key obtained in the step A to generate an encrypted data stream;
step D, the communication party A sends the encrypted data stream to the communication party B through a public channel;
step E, the B party of communication uses the private key obtained in step A to carry out decoding operation on the data stream received from A;
step F, the communication B party uses a channel coding and decoding algorithm to carry out channel error correction coding and decoding on the data stream subjected to the decoding operation in the step E;
and G, the communication party B performs inverse processing on the bit sequence after channel decoding with the preprocessing process in the step B to obtain the information transmitted to the party B by the party A.
The invention further improves, the pilot frequency sequence in step A should be the frequency domain subcarrier pilot frequency sequence in the multi-carrier transmission system, or time domain symbol sequence in the single carrier transmission system, the signal channel characteristic in step A should be the signal channel frequency domain amplitude response characteristic measured, or the signal channel time domain shock response characteristic measured, the quantization procedure in step A is, when the signal channel characteristic is the signal channel frequency domain amplitude response characteristic, should quantize the amplitude value of the signal channel frequency domain amplitude response characteristic in different subcarriers to the bit sequence corresponding to amplitude; when the channel characteristic is a channel time domain impulse response characteristic, impulse response amplitude values of the time domain impulse response of the channel at different time points should be quantized into a bit sequence corresponding to the amplitude.
In a further development of the invention, the private key in step a is to be quantized into a bit sequence by preprocessing the results of the corresponding channel measurements by the communicating parties a and B.
The invention further improves, the step A preprocessing process comprises the steps of carrying out transform domain processing or principal component analysis processing on the channel measurement result, extracting the bit sequence with higher consistency of the A and B parties, and carrying out extraction or permutation and combination change on the bit sequence formed by quantizing the measured channel characteristics in a certain mode.
In a further improvement of the present invention, the preprocessing in step B includes that the communication a party uses the information already shared by both communication parties and the transmitted frame number to perform encryption processing on the information to be transmitted.
The invention further improves that the channel coding in the step B comprises a convolutional code, a Turbo code, an RS code, an LDPC code and a Polar code, and the original transmission information is converted into a code sequence which is longer than the original transmission information, and the coding method is used for correcting bit errors in the transmission process.
In a further improvement of the present invention, the encoding operation in step C includes performing bit-by-bit exclusive or operation on the bit sequence generated by the communication a party in step B after channel error correction encoding and the private key obtained by the communication a party in step a.
In a further development of the invention, the decoding operation in step E comprises a bit-by-bit exclusive-or operation of the bit sequence transmitted by the communication a-party in step D and the private key obtained by the communication B-party in step a.
The further improvement of the invention, the channel error correction coding and decoding in the step F comprises that the communication B side uses the error correction code to correct the bit decoded in the step E, and obtains the correct bit sequence before the channel coding.
A further improvement of the present invention, the reverse operation in step G, includes that the communication B party uses the information and the transmitted frame number that are already common to both parties to decrypt the channel decoded bit sequence obtained in step F.
The invention provides an information transmission method based on a wireless channel characteristic quantization private asymmetric key, which is different from the prior key generation method and is designed aiming at the channel characteristics obtained by the measurement of two communication parties. Since the information reconciliation process may reveal the secret shared channel information of both parties, the complexity of the whole system will be increased after the privacy amplification process is added. The method of the invention quantizes the measured channel characteristics into a private key, directly performs exclusive OR operation with the information needing to be transmitted after channel coding, and then transmits the private key to the other side. And the opposite side performs exclusive OR operation on the private key quantized by the measured channel characteristics, and then performs channel error correction coding and decoding on the transmitted information to finally obtain the transmitted information. By the method, the safe information transmission of the two communication parties through the wireless channel characteristics can be realized without the aid of an information reconciliation process.
Drawings
FIG. 1 is a flow chart of the system of the present invention;
FIG. 2 is a frequency domain subcarrier amplitude channel signature obtained based on a wireless channel in accordance with the present invention;
FIG. 3 is a diagram of channel quantization results based on wireless channel characteristics according to the present invention;
FIG. 4 is a key bitmap based on the quantization of the wireless channel according to the present invention;
FIG. 5 is a diagram of an embodiment of the system of the present invention;
fig. 6 is a schematic diagram of the security transmission performance and the eavesdropping result in the presence of an eavesdropper by using the method of the invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
the invention provides an information transmission method for quantizing a private asymmetric key based on wireless channel characteristics.
As an embodiment of the present invention, a flow chart of a specific implementation system is provided as shown in FIG. 1.
First, both sides of communication Alice and Bob detect the pilot P through their respective channel characteristics and measure the channel characteristics. In this embodiment, consider the amplitude characteristics in the frequency domain of the wireless channel based on Alice and Bob. The characteristics of the channel from Bob to Alice obtained by Alice through the channel sounding pilot P areHBAThe channel characteristic obtained by Bob from Alice to Bob is HAB. The frequency domain characteristics of the wireless channel obtained by the method are shown in figure 2. As can be seen from the figure, the frequency domain characteristics of the obtained wireless channels have a certain difference due to the difference between the wireless channels of both the communication parties and the difference between the devices of both the communication parties.
Respectively quantizing the measured channel characteristics into a preliminarily obtained private key P by Alice and BobAAnd PB. Wherein H is influenced by actual measurementBA≈HABThus, the actually obtained private key PA≈PB. The process of obtaining the private key is shown in fig. 3 and 4. It can be seen in fig. 4 that the 0/1 bit sequence in the private key that Alice and Bob ultimately obtain has some difference.
Thus, in this embodiment, we allow PAAnd PBMost of the bits are the same, but P is allowedAAnd PBWith a small number of bits being different. In addition, in order to improve the randomness of the private key, Alice and Bob may obtain the private key P preliminarilyAAnd PBPerforming extraction operation, namely;
where D is the extraction depth.
Finally, Alice and Bob can obtain a private key with length L and high randomness by measuring the wireless channel for multiple timesAnd
and the Alice selects the information M which needs to be sent to the Bob, and the Alice adds the transmitted frame sequence number F behind the information M to form the information MF. Alice encrypts the information MF through a secret key K shared with Bob in advance to obtain the informationAlice selects a channel error correction coding algorithm, the code rate of the channel error correction coding algorithm is c, namely the information length after channel error correction coding is 1/c of the original transmission information length. Alice will informationObtaining channel coded information by channel codingWherein,is L.
Alice will sendAnd private keyA bit-by-bit xor operation is performed to obtain the sequence S to be transmitted.
Alice transmits the sequence S to Bob over a common channel. Bob passes its private keyExclusive-or operation is carried out with the received sequence S to solve the information
Bob encodes and decodes the information obtained by the channel error correctionDecoding to obtain error-corrected informationFinally, Bob will communicate with Alice through a secret key K shared in advanceAnd decrypting to obtain information MF and finally extracting the information M transmitted by Alice.
Fig. 5 shows an embodiment of the overall system of the method of the present invention. The transmission performance of the secure information transmission using the inventive method and the performance of an eavesdropper attempting to decode the transmitted information through an eavesdropping channel are shown in fig. 6. As shown in the figure, when the information transmission is carried out by using 256 bits as a group, the signal-to-noise ratio of the transmission environment is higher than 15dB, the packet error rate of the safety information transmission by using the method of the invention is lower than 10%, and the safety transmission of the information can be realized. However, the packet error rate of decoding information after eavesdropping by an eavesdropper is 100%, and the transmitted information cannot be correctly decoded.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made according to the technical spirit of the present invention are within the scope of the present invention as claimed.
Claims (7)
1. An information transmission method for quantizing a private asymmetric key based on wireless channel characteristics comprises the following steps:
step A, the two communication parties A and B measure the channel characteristics of the channels from the two communication parties to the other communication parties through the pilot frequency sequences transmitted by the two communication parties respectively, and the two communication parties quantize the wireless channel characteristics obtained by the respective measurement into a private key, wherein the private key is an asymmetric key of the two communication parties;
the pilot frequency sequence in the step A is a frequency domain subcarrier pilot frequency sequence in a multicarrier transmission system or a time domain symbol sequence in a single carrier transmission system, the channel characteristic in the step A is a measured channel frequency domain amplitude response characteristic or a measured channel time domain impulse response characteristic, and the quantization process in the step A is to quantize the amplitude values of the frequency domain amplitude response characteristic of the channel in different subcarriers into a bit sequence corresponding to the amplitude when the channel characteristic is the channel frequency domain amplitude response characteristic; when the channel characteristic is a channel time domain impulse response characteristic, the impulse response amplitude values of the time domain impulse response of the channel at different time points are quantized into bit sequences corresponding to the amplitudes;
b, the communication party A carries out channel error correction coding on the information to be transmitted after preprocessing, and generates a bit sequence after the channel error correction coding;
step C, the communication A side carries out coding operation on the bit sequence generated in the step B after channel error correction coding and the private key obtained in the step A to generate an encrypted data stream;
the encoding operation in the step C comprises the exclusive OR operation of bit by bit of the bit sequence generated by the communication A party in the step B after channel error correction encoding and the private key obtained by the communication A party in the step A;
step D, the communication party A sends the encrypted data stream to the communication party B through a public channel;
step E, the B party of communication uses the private key obtained in step A to carry out decoding operation on the data stream received from A;
the decoding operation in the step E comprises the exclusive OR operation of the bit sequence transmitted by the communication A party in the step D and the private key obtained by the communication B party in the step A one by one;
step F, the communication B party uses a channel coding and decoding algorithm to carry out channel error correction coding and decoding on the data stream subjected to the decoding operation in the step E;
and G, the communication party B performs inverse processing on the bit sequence after channel decoding with the preprocessing process in the step B to obtain the information transmitted to the party B by the party A.
2. The method for transmitting information based on quantized private asymmetric key of claim 1, wherein the private key in step a is quantized into bit sequence after preprocessing the corresponding channel measurement result by the communicating parties a and B.
3. The information transmission method according to claim 2, wherein the preprocessing of step a includes performing transform domain processing or principal component analysis processing on the channel measurement result, extracting bit sequences with high consistency between parties a and B, and performing extraction or permutation and combination change on the bit sequences quantized by the measured channel characteristics in a certain manner.
4. The method according to claim 1, wherein the preprocessing in step B includes the communication party a encrypting the information to be transmitted using the information already shared by both communication parties and the transmitted frame number.
5. The information transmission method according to claim 1, wherein the channel error correction coding in step B includes convolutional code, Turbo code, RS code, LDPC code, and Polar code, and converts the original transmission information into a code sequence longer than the original transmission information, so as to correct the bit error during transmission.
6. The method according to claim 1, wherein the decoding of the channel error correction coding in step F includes the communication B party correcting the bits decoded in step E with an error correction code to obtain a correct bit sequence before channel coding.
7. The information transmission method according to claim 1, wherein the inverse operation in step G comprises the communication B party decrypting the channel-decoded bit sequence obtained in step F using the information and the transmitted frame number that are already common to both parties.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810105180.8A CN108366370B (en) | 2018-02-02 | 2018-02-02 | A kind of information transferring method quantifying privately owned asymmetric key based on radio channel characteristic |
| PCT/CN2018/086477 WO2019148690A1 (en) | 2018-02-02 | 2018-05-11 | Information transmission method based on wireless channel feature quantized asymmetric private keys |
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| CN201810105180.8A CN108366370B (en) | 2018-02-02 | 2018-02-02 | A kind of information transferring method quantifying privately owned asymmetric key based on radio channel characteristic |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110071801B (en) * | 2019-04-24 | 2021-09-07 | 东南大学 | Key generation part reconciliation method combining BBBSS protocol and BCH code |
| CN110086616B (en) * | 2019-05-10 | 2021-07-16 | 南京东科优信网络安全技术研究院有限公司 | Forward one-time pad secret communication method based on wireless channel |
| CN110336657B (en) * | 2019-07-03 | 2022-02-08 | 上海大学 | Optical OFDM dynamic key generation method based on channel characteristics |
| CN111404587B (en) * | 2020-03-12 | 2022-04-01 | 东南大学 | Multi-user MIMO symmetrical channel characteristic obtaining method based on conjugate precoding |
| CN112104459B (en) * | 2020-09-10 | 2023-05-12 | 国网江苏省电力有限公司信息通信分公司 | Key generation method based on channel fingerprint and auxiliary data |
| CN112533199A (en) * | 2020-11-25 | 2021-03-19 | 南京熊猫电子股份有限公司 | OFDM channel physical key generation method and device based on USRP and computer equipment |
| CN112532328B (en) * | 2021-02-07 | 2021-05-14 | 中国人民解放军国防科技大学 | Channel characteristic quantization method and device, electronic equipment and storage medium |
| CN112906874B (en) * | 2021-04-06 | 2024-08-23 | 南京大学 | Convolutional neural network feature map data compression method and device |
| CN114040392A (en) * | 2021-11-04 | 2022-02-11 | 东南大学 | Uniform quantization method based on median non-uniform normalization and applicable to uncoordinated wireless channel key generation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104717074A (en) * | 2015-04-02 | 2015-06-17 | 东南大学 | Shared key security communication method for fusing private information |
| CN105024824A (en) * | 2014-11-05 | 2015-11-04 | 祝国龙 | Method for generating and verifying credible label based on asymmetrical encryption algorithm and system |
| CN106102049A (en) * | 2016-06-06 | 2016-11-09 | 东南大学 | A kind of safe transmission message approach utilizing the characteristic of channel |
| CN106211149A (en) * | 2016-07-08 | 2016-12-07 | 东南大学 | Channel reciprocity enhancement method based on principal component analysis |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140153723A1 (en) * | 2012-06-01 | 2014-06-05 | Georgia Tech Research Corporation | System for providing physical layer security |
| CN104219252A (en) * | 2014-09-28 | 2014-12-17 | 东南大学 | Coding error correction based secret key forward direction consistency calibration method |
| CN106878012B (en) * | 2016-12-07 | 2019-07-16 | 中国电子科技集团公司第三十研究所 | A kind of wireless channel physical layer key agreement and inconsistent bit minimizing technology |
-
2018
- 2018-02-02 CN CN201810105180.8A patent/CN108366370B/en active Active
- 2018-05-11 WO PCT/CN2018/086477 patent/WO2019148690A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024824A (en) * | 2014-11-05 | 2015-11-04 | 祝国龙 | Method for generating and verifying credible label based on asymmetrical encryption algorithm and system |
| CN104717074A (en) * | 2015-04-02 | 2015-06-17 | 东南大学 | Shared key security communication method for fusing private information |
| CN106102049A (en) * | 2016-06-06 | 2016-11-09 | 东南大学 | A kind of safe transmission message approach utilizing the characteristic of channel |
| CN106211149A (en) * | 2016-07-08 | 2016-12-07 | 东南大学 | Channel reciprocity enhancement method based on principal component analysis |
Non-Patent Citations (3)
| Title |
|---|
| 基于无线信道特征的物理层安全研究;黄夷芯;《中国优秀硕士学位论文全文数据库》;20160504;全文 |
| 无线信道的密钥生成方法;胡爱群 等;《密码学报》;20140615;全文 |
| 无线通信物理层安全方法综述;胡爱群 等;《数据采集与处理》;20140515;全文 |
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| WO2019148690A1 (en) | 2019-08-08 |
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