CN107819568A - Information detecting method, device and receiving device based on constellation point distance - Google Patents
Information detecting method, device and receiving device based on constellation point distance Download PDFInfo
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- CN107819568A CN107819568A CN201711131935.3A CN201711131935A CN107819568A CN 107819568 A CN107819568 A CN 107819568A CN 201711131935 A CN201711131935 A CN 201711131935A CN 107819568 A CN107819568 A CN 107819568A
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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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
- H04L9/0631—Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/345—Modifications of the signal space to allow the transmission of additional information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the present invention discloses a kind of information detecting method based on constellation point distance, including：Receive the first vector information after channel matching；Relevant treatment is carried out to the first vector information, obtains Second support information, initial carrier information and the 3rd carrier information successively；Relevant treatment is carried out to the Second support information, obtains the 4th carrier information；Compare the 3rd carrier information and the 4th carrier information, to determine the 3rd carrier information and the 4th carrier information corresponding points；Determine the first distance between the corresponding points, and the second distance on planisphere between adjacent constellation point；Judge whether first distance is more than second distance；If so, then judge secret information be present in the first vector information.The present invention can be detected accurately to secret information.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of information detecting method based on constellation point distance, device
And receiving device.
Background technology
Steganography is replaced, refers to raw information after the channel encoding, embedded secret information, secret information is directly replaced into original
Some partial informations reach Information hiding purpose.
At present, in Steganalysis, for least significant bit (Least Significant Bit, LSB) steganography
Context of detection, Chi-square statistic method are earliest detection algorithms, and it has this by defining a chi amount come test image
The probability of kind statistical property, realizes the detection replaced to order LSB, but the LSB that can not detect random site is replaced.For
The methods of detection algorithm of LSB matchings employs neutral net, pattern-recognition substantially, feature set is trained to extract effectively
Feature, then the detection to secret information is realized by the cascading judgements of multiple features, but these method operands are big, detection knot
Fruit is not accurate enough, and has limitation.
The content of the invention
The embodiment of the invention discloses a kind of information detecting method based on constellation point distance, device and receiving device, energy
It is enough that accurately secret information is detected.
First aspect of the embodiment of the present invention discloses a kind of information detecting method based on constellation point distance, including：
Receive the first vector information after channel matching；
Relevant treatment is carried out to the first vector information, obtain successively Second support information, initial carrier information and
3rd carrier information；
Relevant treatment is carried out to the Second support information, obtains the 4th carrier information；
Compare the 3rd carrier information and the 4th carrier information, to determine the 3rd carrier information and described the
Four carrier information corresponding points；
Determine the first distance between the corresponding points, and the second distance on planisphere between adjacent constellation point；
Judge whether first distance is more than second distance；
If so, then judge secret information be present in the first vector information.
As an alternative embodiment, in first aspect of the embodiment of the present invention, it is described that the first vector is believed
Breath carries out relevant treatment, and obtaining Second support information, initial carrier information and the 3rd carrier information successively includes：
Processing is demodulated to the first vector information, obtains Second support information；
The Second support information is decoded and recompiled processing, obtain initial carrier information；
The initial carrier information is re-modulated, obtains the 3rd carrier information.
As an alternative embodiment, in first aspect of the embodiment of the present invention, it is described that the Second support is believed
Breath carries out relevant treatment, and obtaining the 4th carrier information includes：
Re-modulation processing is carried out to the Second support information, obtains the 4th carrier information.
As an alternative embodiment, in first aspect of the embodiment of the present invention, methods described also includes：
If first distance is less than or equal to the second distance, judge in the first vector information in the absence of hidden
Secret information.
Second aspect of the embodiment of the present invention discloses a kind of information detector, including：
Receiving unit, for receiving the first vector information after channel matches；
Processing unit, for carrying out relevant treatment to the first vector information, Second support information, original is obtained successively
Carrier information and the 3rd carrier information；
The processing unit, it is additionally operable to carry out relevant treatment to the Second support information, obtains the 4th carrier information；
Compare determining unit, the 3rd carrier information and the 4th carrier information, to determine that the 3rd carrier is believed
Breath and the 4th carrier information corresponding points；
Determining unit, determines the first distance between the corresponding points, and on planisphere between adjacent constellation point second away from
From；
Whether judging unit, first distance are more than second distance；
Identifying unit, for when the judging unit judges that first distance is more than second distance, judgement described the
Secret information be present in one carrier information.
As an alternative embodiment, in second aspect of the embodiment of the present invention, the processing unit is to described
One carrier information carries out relevant treatment, and obtaining Second support information, initial carrier information and the 3rd carrier information successively includes：
Processing is demodulated to the first vector information, obtains Second support information；
The Second support information is decoded and recompiled processing, obtain initial carrier information；
The initial carrier information is re-modulated, obtains the 3rd carrier information.
As an alternative embodiment, in second aspect of the embodiment of the present invention, the processing unit is additionally operable to pair
The Second support information carries out relevant treatment, and obtaining the 4th carrier information includes：
Re-modulation processing is carried out to the Second support information, obtains the 4th carrier information.
As an alternative embodiment, in second aspect of the embodiment of the present invention, the identifying unit, it is additionally operable to work as
The judging unit judges that first distance is less than or equal to the second distance, then judges in the first vector information not
Secret information be present.
The third aspect of the embodiment of the present invention discloses a kind of receiving device, and the receiving device includes processor and memory,
The computer program of memory storage described in the computing device with realize described in above-mentioned any one of first aspect based on star
The information detecting method of seat point distance.
A kind of computer-readable recording medium, the computer-readable recording medium storage has at least one instruction, described
The inspection of the information based on constellation point distance described in above-mentioned any one of first aspect is realized at least one instruction when being executed by processor
Survey method.
Compared with prior art, the embodiment of the present invention possesses following beneficial effect：
In the embodiment of the present invention, receiving device can receive the first vector information after channel matching；To described first
Carrier information carries out relevant treatment, obtains Second support information, initial carrier information and the 3rd carrier information successively；To described
Second support information carries out relevant treatment, obtains the 4th carrier information；Compare the 3rd carrier information and the 4th carrier
Information, to determine the 3rd carrier information and the 4th carrier information corresponding points；Determine between the corresponding points first away from
From, and the second distance on planisphere between adjacent constellation point；Judge whether first distance is more than second distance；If so,
Then judge secret information be present in the first vector information.It can be seen that implementing the embodiment of the present invention, receiving device can be to receiving
The first vector information arrived carries out relevant treatment, obtains Second support information, initial carrier information and the 3rd carrier letter successively
Breath, and receiving device can carry out relevant treatment to Second support information, obtain the 4th carrier information, further, to the
Four carrier informations and the 3rd carrier information, which are compared, to be analyzed and judges, to judge to have secret in the first vector information
Information, so as to accurately be detected to secret information.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, it will use below required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is a kind of traffic model figure for replacing steganography disclosed in the embodiment of the present invention；
Fig. 2 is a kind of schematic flow sheet of the information detecting method based on constellation point distance disclosed in the embodiment of the present invention；
Fig. 3 is a kind of structural representation of information detector disclosed in the embodiment of the present invention；
Fig. 4 is a kind of structural representation of receiving device disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two ", " the 3rd " and " the 4th " etc. are to be used to distinguish different objects, rather than for describing particular order.In addition, term " comprising "
" having " and their any deformations, it is intended that cover non-exclusive include.Such as contain series of steps or unit
Process, method, system, product or equipment the step of being not limited to list or unit, but alternatively also include not having
The step of listing or unit, or alternatively also include for the intrinsic other steps of these processes, method, product or equipment or list
Member.
The embodiment of the invention discloses a kind of information detecting method based on constellation point distance, device and receiving device, energy
It is enough that accurately secret information is detected.Accompanying drawing is combined below to be described in detail.
Referring to Fig. 1, Fig. 1 is a kind of traffic model figure for replacing steganography disclosed in the embodiment of the present invention.As shown in figure 1,
The traffic model of the replacement steganography can include two processes：Transmission process and receive process.
Wherein, transmission process is mainly performed by transmission equipment.Wherein, sending equipment can set including base station or user
It is standby.Base station (such as access point) can refer in the air on interface by one or more sectors with wireless terminal lead in access network
The equipment of letter.Base station, which can be used for the air frame received and IP being grouped, is mutually changed, as wireless terminal and access network
Router between remainder, wherein, the remainder of access network may include Internet protocol (IP) network.Base station can also assist
Adjust the attribute management to air interface.For example, base station can be base station (BTS, the Base Transceiver in GSM or CDMA
Station the base station (NodeB)) or in WCDMA, can also be in LTE evolved base station (NodeB or eNB or
E-NodeB, evolutional Node B), the embodiment of the present invention does not limit.User equipment can include but is not limited to intelligence
Mobile phone, notebook computer, personal computer (Personal Computer, PC), personal digital assistant (Personal
Digital Assistant, PDA), mobile internet device (Mobile Internet Device, MID), wearable device (such as
Intelligent watch, Intelligent bracelet, intelligent glasses) etc. each class of electronic devices, wherein, the operating system of the user equipment may include but not
It is limited to Android operation system, IOS, Symbian (Saipan) operating system, Black Berry (blackberry, blueberry) operations system
System, Windows Phone8 operating systems etc., the embodiment of the present invention does not limit.
In transmission process, send equipment and be divided into two-way, be that carrier information is encoded all the way, another way is secret information
It is encoded, after the two coding, then secret information is embedded into carrier information, be modulated, be re-fed into channel, channel hair
Give receiving device.
Wherein, receive process are mainly performed by receiving device.Wherein, receiving device can include base station or user sets
It is standby.Base station (such as access point) can refer in the air on interface by one or more sectors with wireless terminal lead in access network
The equipment of letter.Base station, which can be used for the air frame received and IP being grouped, is mutually changed, as wireless terminal and access network
Router between remainder, wherein, the remainder of access network may include Internet protocol (IP) network.Base station can also assist
Adjust the attribute management to air interface.For example, base station can be base station (BTS, the Base Transceiver in GSM or CDMA
Station the base station (NodeB)) or in WCDMA, can also be in LTE evolved base station (NodeB or eNB or
E-NodeB, evolutional Node B), the embodiment of the present invention does not limit.User equipment can include but is not limited to intelligence
Mobile phone, notebook computer, personal computer (Personal Computer, PC), personal digital assistant (Personal
Digital Assistant, PDA), mobile internet device (Mobile Internet Device, MID), wearable device (such as
Intelligent watch, Intelligent bracelet, intelligent glasses) etc. each class of electronic devices, wherein, the operating system of the user equipment may include but not
It is limited to Android operation system, IOS, Symbian (Saipan) operating system, Black Berry (blackberry, blueberry) operations system
System, Windows Phone8 operating systems etc., the embodiment of the present invention does not limit.
In receive process, after receiving device demodulates to the signal received, first to extract then solution after demodulation
Code, to obtain secret information, then the signal after extraction secret information is decoded, to obtain carrier information.
Specifically, the specific embedded mode of secret information can be with binary phase shift keying (BINARY PHASE SHIFT
KEYING, BPSK) exemplified by illustrate, become 0,1 sequence after carrier information is encoded, after secret information coding and 0,1 sequence,
Then secret information can enter hiding for row information with some positions of random replacement carrier information, and now, the 0 of carrier information can be with
Replaced by the 1 of secret information, the 1 of carrier information can be replaced by the 0 of secret information, and becoming 1,1 by BPSK namely -1 becomes -1.
Certainly, in order to ensure can subsequently recover initial carrier information, the digit of secret information needs the error correction energy less than carrier information
Power can error correction digit.As an example it is assumed that there are k positions encoded infonnation position, n symbol altogether, then can error correction digitRound numbers, so, the digit of secret information is less than t, can just be replaced steganography.
Referring to Fig. 2, Fig. 2 is a kind of stream of the information detecting method based on constellation point distance disclosed in the embodiment of the present invention
Journey schematic diagram.It may comprise steps of as shown in Fig. 2 being somebody's turn to do the information detecting method based on constellation point distance：
Step 201, receiving device receive the first vector information after channel matching.
Steganography is replaced, refers to raw information after the channel encoding, embedded secret information, secret information is directly replaced into original
Some partial informations reach Information hiding purpose.
In the present invention, send equipment and send the carrier information channel after replacing steganography, receiving device can
The first vector information is obtained after channel matching, wherein, the first vector information is the information after encoded modulation.
Wherein, the formula of channel matched is as follows：
Wherein, Y is to have multiplied the carrier information after channel H, and conj (H) is H conjugation, and Y1 is first vector information.
Step 202, receiving device carry out relevant treatment to the first vector information, obtain successively Second support information,
Initial carrier information and the 3rd carrier information.
Specifically, receiving device carries out relevant treatment to the first vector information, Second support information, original are obtained successively
The mode of beginning carrier information and the 3rd carrier information is specifically as follows：
Processing is demodulated to the first vector information, obtains Second support information；
The Second support information is decoded and recompiled processing, obtain initial carrier information；
The initial carrier information is re-modulated, obtains the 3rd carrier information.
In the present invention, the Second support information is decoded, it is possible to what may be hidden in Second support information
Secret information is erased, after recompiling, it is possible to obtain initial carrier information.Wherein, first vector information may include hidden
Secret information, and the 3rd carrier information does not include secret information.
Step 203, receiving device carry out relevant treatment to the Second support information, obtain the 4th carrier information.
Specifically, receiving device obtains the 4th carrier information to carrying out re-modulation processing to the Second support information.
Preferably, modulation system is digital modulation.
In the present invention, the Second support information is decoded, it is possible to what may be hidden in Second support information
Secret information is erased, therefore is carried out re-modulation to the Second support information and handled to obtain the 4th carrier information, is carried with second
The secret information that may be hidden in the same 4th carrier information of body information.
Step 204, receiving device the 3rd carrier information and the 4th carrier information, to determine the described 3rd
Carrier information and the 4th carrier information corresponding points.
3rd carrier information is obtained by initial carrier information by digital modulation, and the 4th carrier information is carried by second
What body information obtained by digital modulation, therefore the available planisphere of the 3rd carrier information and the 4th carrier information represents.
Wherein, the 4th carrier information is obtained by Second support information by digital modulation, and Second support information passes through
Cross first vector information and demodulate what is obtained.Because first vector information can be affected by noise, noise can be in first vector information
Constellation point is nearby shaken, so can be judged by accident in the constellation point of the 4th carrier information, however, after information is replaced, is deviateed
Constellation point can exceed the shake of noise.
Step 205, determine the first distance between the corresponding points, and on planisphere between adjacent constellation point second away from
From.
Generally, the 3rd carrier information and the 4th carrier information corresponding points are determined, finds out and determines after corresponding points between corresponding points
First distance, it is otherwise determined that the second distance between adjacent constellation point on planisphere.
Wherein, distance calculation formula is as follows：
Y=Y3-Y4
Wherein, Y3 is the corresponding point coordinates on the 3rd carrier information planisphere, and Y4 is on the 4th carrier information planisphere
Corresponding point coordinates, Y are coordinates corresponding to the first distance, and R is the distance value of the first distance.
It may include random noise in the consistent corresponding point position of constellation point, and may in the different corresponding point position of constellation point
Including random noise and secret information.The presence of noise causes the constellation point of first vector information nearby to shake, so the 4th
It can be judged by accident in the constellation point of carrier information, however, after information is replaced, deviate the shake that constellation point can exceed noise.
Thus secret information can be whether there is according to the Distance Judgment between corresponding points
Wherein, noise is random Gaussian noise, therefore the presence of noise causes the constellation point of first vector information nearby to tremble
It is dynamic.
Step 206, receiving device judge whether first distance is more than second distance, if so, step 207 is performed, if
It is no, perform step 208.
In the present invention, because first vector information can be affected by noise, noise can first vector information constellation point it is attached
Nearly shake, so can be judged by accident in the constellation point of the 4th carrier information, however, after information is replaced, deviate constellation point meeting
More than the shake of noise, therefore, it is possible to according to the first distance between corresponding points, and the second distance progress between adjacent constellation point
The judgement of secret information.
Wherein, digital modulation can be QPSK, PSK, QAM.
Step 207, receiving device judge secret information be present in the first vector information, and terminate this flow.
Step 208, receiving device judge secret information is not present in the first vector information.
Referring to Fig. 3, Fig. 3 is a kind of structural representation of information detector disclosed in the embodiment of the present invention.Wherein, scheme
Information detector described by 3 can be used for performing the part or all of step in the information detecting method described by Fig. 2, tool
Body refers to the associated description in Fig. 2, will not be repeated here.As shown in figure 3, the information detector can include：
Receiving unit 101, for receiving the first vector information after channel matches；
Processing unit 102, for carrying out relevant treatment to the first vector information, obtain successively Second support information,
Initial carrier information and the 3rd carrier information；
The processing unit 102, it is additionally operable to carry out relevant treatment to the Second support information, obtains the 4th carrier letter
Breath；
Compare determining unit 103, the 3rd carrier information and the 4th carrier information, to determine the 3rd carrier
Information and the 4th carrier information corresponding points；
Determining unit 104, determines the first distance between the corresponding points, and on planisphere between adjacent constellation point second
Distance；
Whether judging unit 105, first distance are more than second distance；
Identifying unit 106, for when the judging unit judges that first distance is more than second distance, described in judgement
Secret information be present in first vector information.
Optionally, the processing unit 102 carries out relevant treatment to the first vector information, obtains Second support successively
Information, initial carrier information and the 3rd carrier information include：
Processing is demodulated to the first vector information, obtains Second support information；
The Second support information is decoded and recompiled processing, obtain initial carrier information；
The initial carrier information is re-modulated, obtains the 3rd carrier information.
Optionally, the processing unit 102 is also additionally operable to carry out relevant treatment to the Second support information, obtains the 4th
Carrier information includes：
Re-modulation processing is carried out to the Second support information, obtains the 4th carrier information.
Optionally, the identifying unit 106, it is additionally operable to when the judging unit 105 is additionally operable to when the judging unit is sentenced
Disconnected first distance is less than or equal to the second distance, then judges secret information is not present in the first vector information.
Wherein, the information detector described by implementing Fig. 3, the first vector information after channel matching is received；To institute
State first vector information and carry out relevant treatment, obtain Second support information, initial carrier information and the 3rd carrier information successively；
Relevant treatment also is carried out to Second support information, obtains the 4th carrier information；3rd carrier information and the 4th carrier
Information, to determine the 3rd carrier information and the 4th carrier information corresponding points；Determine between the corresponding points first away from
From, and the second distance on planisphere between adjacent constellation point；Judge whether first distance is more than second distance；Work as judgement
When first distance is more than second distance, judge secret information be present in first vector information, so as to accurately believe secret
Breath is detected.
The above-mentioned integrated unit realized in the form of software function module, can be stored in a computer-readable storage
In medium.Wherein, the computer-readable recording medium can store computer program, and the computer program is being executed by processor
When, the step in above-mentioned each embodiment of the method can be achieved.Wherein, the computer program includes computer program code, described
Computer program code can be source code form, object identification code form, executable file or some intermediate forms etc..The meter
Calculation machine readable storage medium storing program for executing can include：Can carry any entity or device of the computer program code, recording medium,
USB flash disk, mobile hard disk, magnetic disc, CD, computer storage, read-only storage (ROM, Read-Only Memory), arbitrary access
Memory (RAM, Random-Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..Need
It is bright, the content that the computer-readable recording medium includes can according in jurisdiction legislation and patent practice will
Ask and carry out appropriate increase and decrease.
Referring to Fig. 4, Fig. 4 is a kind of structural representation of receiving device disclosed in the embodiment of the present invention.Wherein, Fig. 4 institutes
The receiving device shown includes processor 801 and memory 802.Wherein, the processor 801 and memory 802 connect respectively
Communication bus.Memory 802 can be high-speed RAM memory or non-volatile memory (non-volatile
memory).It will be understood by those skilled in the art that the structure of the receiving device shown in Fig. 4 does not form the limit to the present invention
Fixed, it both can be busbar network or hub-and-spoke configuration, can also include than more or less portions shown in Fig. 4
Part, either combine some parts or different parts arrangement.
Wherein, processor 801 is the control centre of receiving device, can be central processing unit (Central
Processing Unit, CPU), processor 801 is led to using the various pieces of various interfaces and the whole receiving device of connection
Cross operation or perform the software program and/or module being stored in memory 802, and call and be stored in the internal memory of memory 802
The program code of storage, for performing following operation：
Receive the first vector information after channel matching；
Relevant treatment is carried out to the first vector information, obtain successively Second support information, initial carrier information and
3rd carrier information；
Relevant treatment is carried out to the Second support information, obtains the 4th carrier information；
Compare the 3rd carrier information and the 4th carrier information, to determine the 3rd carrier information and described the
Four carrier information corresponding points；
Determine the first distance between the corresponding points, and the second distance on planisphere between adjacent constellation point；
Judge whether first distance is more than second distance；
If so, then judge secret information be present in the first vector information.
As an alternative embodiment, described carry out relevant treatment to the first vector information, the is obtained successively
Two carrier informations, initial carrier information and the 3rd carrier information include：
Processing is demodulated to the first vector information, obtains Second support information；
The Second support information is decoded and recompiled processing, obtain initial carrier information；
The initial carrier information is re-modulated, obtains the 3rd carrier information.
As an alternative embodiment, described carry out relevant treatment to the Second support information, obtain the 4th and carry
Body information includes：
Re-modulation processing is carried out to the Second support information, obtains the 4th carrier information.
As an alternative embodiment, the processor 801, which may call upon, is stored in the memory storage of memory 802
Program code, for performing following operation：
If first distance is less than or equal to the second distance, judge in the first vector information in the absence of hidden
Secret information.
In the receiving device described by Fig. 4, receiving device receives the first vector information after channel matching；To described
First vector information carries out relevant treatment, obtains Second support information, initial carrier information and the 3rd carrier information successively；It is right
The Second support information carries out relevant treatment, obtains the 4th carrier information；Compare the 3rd carrier information and the described 4th
Carrier information, to determine the 3rd carrier information and the 4th carrier information corresponding points；Determine between the corresponding points
One distance, and the second distance on planisphere between adjacent constellation point；Judge whether first distance is more than second distance；If
It is then to judge secret information be present in the first vector information.It can be seen that implementing the embodiment of the present invention, receiving device can be right
The first vector information received carries out relevant treatment, obtains Second support information, initial carrier information and the 3rd load successively
Body information, further, first vector information, Second support information, initial carrier information and the 3rd carrier information are carried out
Comparative analysis simultaneously judges, to judge secret information being present in the first vector information, so as to accurately to secret information
Detected.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed device, can be by another way
Realize.For example, device embodiment described above is only schematical, such as the division of the unit, it is only one kind
Division of logic function, can there is an other dividing mode when actually realizing, such as multiple units or component can combine or can
To be integrated into another system, or some features can be ignored, or not perform.Another, shown or discussed is mutual
Coupling direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of device or unit,
Can be electrical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer-readable access to memory.Based on such understanding, technical scheme substantially or
Person say the part to be contributed to prior art or the technical scheme all or part can in the form of software product body
Reveal and, the computer software product is stored in a memory, including some instructions are causing a computer equipment
(can be personal computer, server or network equipment etc.) performs all or part of each embodiment methods described of the present invention
Step.And foregoing memory includes：USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory
(RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with the medium of store program codes.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct the hardware of correlation to complete by program, the program can be stored in a computer-readable memory, memory
It can include：Flash disk, read-only storage (English：Read-Only Memory, referred to as：ROM), random access device (English：
Random Access Memory, referred to as：RAM), disk or CD etc..
A kind of information detecting method based on constellation point distance, device and reception disclosed in the embodiment of the present invention are set above
Standby to be described in detail, specific case used herein is set forth to the principle and embodiment of the present invention, the above
The explanation of embodiment is only intended to help the method and its core concept for understanding the present invention；Meanwhile for the general skill of this area
Art personnel, according to the thought of the present invention, there will be changes in specific embodiments and applications, in summary, this
Description should not be construed as limiting the invention.
Claims (10)
- A kind of 1. information detecting method based on constellation point distance, it is characterised in that including：Receive the first vector information after channel matching；Relevant treatment is carried out to the first vector information, obtains Second support information, initial carrier information and the 3rd successively Carrier information；Relevant treatment is carried out to the Second support information, obtains the 4th carrier information；Compare the 3rd carrier information and the 4th carrier information, to determine that the 3rd carrier information carries with the described 4th Body information corresponding points；Determine the first distance of the corresponding points, and the second distance on planisphere between adjacent constellation point；Judge whether first distance is more than second distance；If so, then judge secret information be present in the first vector information.
- 2. according to the method for claim 1, it is characterised in that it is described that relevant treatment is carried out to the first vector information, Obtaining Second support information, initial carrier information and the 3rd carrier information successively includes：Processing is demodulated to the first vector information, obtains Second support information；The Second support information is decoded and recompiled processing, obtain initial carrier information；The initial carrier information is re-modulated, obtains the 3rd carrier information.
- 3. according to the method for claim 2, it is characterised in that it is described that relevant treatment is carried out to the Second support information, Obtaining the 4th carrier information includes：Re-modulation processing is carried out to the Second support information, obtains the 4th carrier information.
- 4. according to the method for claim 3, it is characterised in that methods described also includes：If first distance is less than or equal to the second distance, judge concealed letter is not present in the first vector information Breath.
- A kind of 5. information detector, it is characterised in that including：Receiving unit, for receiving the first vector information after channel matches；Processing unit, for carrying out relevant treatment to the first vector information, Second support information, initial carrier are obtained successively Information and the 3rd carrier information；The processing unit, it is additionally operable to carry out relevant treatment to the Second support information, obtains the 4th carrier information；Compare determining unit, the 3rd carrier information and the 4th carrier information, with determine the 3rd carrier information with The 4th carrier information corresponding points；Determining unit, determine the first distance between the corresponding points, and the second distance on planisphere between adjacent constellation point；Whether judging unit, first distance are more than second distance；Identifying unit, for when the judging unit judges that first distance is more than second distance, judging that described first carries Secret information be present in body information.
- 6. information detector according to claim 5, it is characterised in that the processing unit is believed the first vector Breath carries out relevant treatment, and obtaining Second support information, initial carrier information and the 3rd carrier information successively includes：Processing is demodulated to the first vector information, obtains Second support information；The Second support information is decoded and recompiled processing, obtain initial carrier information；The initial carrier information is re-modulated, obtains the 3rd carrier information.
- 7. information detector according to claim 6, it is characterised in that the processing unit is additionally operable to described second Carrier information carries out relevant treatment, and obtaining the 4th carrier information includes：Re-modulation processing is carried out to the Second support information, obtains the 4th carrier information.
- 8. information detector according to claim 7, it is characterised in that the identifying unit, be additionally operable to sentence when described The first distance is less than or equal to the second distance described in disconnected unit judges, then judges in the first vector information in the absence of hidden Secret information.
- 9. a kind of receiving device, it is characterised in that the receiving device includes processor and memory, the computing device institute The computer program of memory storage is stated to realize the information detecting method as described in any one of Claims 1-4.
- 10. a kind of computer-readable recording medium, it is characterised in that the computer-readable recording medium storage has at least one The infomation detection side as described in any one of Claims 1-4 is realized in instruction, at least one instruction when being executed by processor Method.
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