WO2019095174A1 - Information detection method and apparatus based on amplitude difference, and receiving device - Google Patents

Information detection method and apparatus based on amplitude difference, and receiving device Download PDF

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Publication number
WO2019095174A1
WO2019095174A1 PCT/CN2017/111215 CN2017111215W WO2019095174A1 WO 2019095174 A1 WO2019095174 A1 WO 2019095174A1 CN 2017111215 W CN2017111215 W CN 2017111215W WO 2019095174 A1 WO2019095174 A1 WO 2019095174A1
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Prior art keywords
carrier information
information
carrier
steganography
difference
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PCT/CN2017/111215
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French (fr)
Chinese (zh)
Inventor
谢宁
谭杰
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深圳大学
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Priority to PCT/CN2017/111215 priority Critical patent/WO2019095174A1/en
Publication of WO2019095174A1 publication Critical patent/WO2019095174A1/en

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    • 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
    • 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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an information detection method, apparatus, and receiving device based on amplitude difference.
  • Substitute steganography means that the original information is embedded in the secret information after channel coding, and the secret information is directly replaced with the original part information to achieve the purpose of information hiding.
  • the chi-square detection method is the earliest detection algorithm for the detection of Least Significant Bit (LSB) steganography, which tests the image by defining a chi-square statistic.
  • the probability of statistical characteristics enables detection of sequential LSB replacement, but does not detect LSB replacement at random locations.
  • the detection algorithm for LSB matching basically adopts methods such as neural network and pattern recognition.
  • the feature set is trained to extract effective features, and then the joint information of multiple features is used to detect the hidden information.
  • these methods are computationally intensive.
  • the test results are not precise enough and have limitations.
  • the embodiment of the invention discloses a method, a device and a receiving device for detecting information based on the amplitude difference, which can accurately detect the secret information.
  • a first aspect of the embodiments of the present invention discloses a method for detecting information based on an amplitude difference, including:
  • the method further includes include:
  • the processing the first carrier information to obtain the original carrier information includes:
  • the first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
  • the comparing whether the first carrier information and the second carrier information are different include:
  • a second aspect of the embodiments of the present invention discloses an information detecting apparatus, including:
  • a receiving unit configured to receive the first bearer information after replacing the steganography
  • a first acquiring unit configured to process the first carrier information to obtain original carrier information
  • a second acquiring unit configured to process the original carrier information to obtain second carrier information before replacing the steganography
  • a comparing unit configured to compare whether the first carrier information and the second carrier information are different
  • a determining unit configured to determine that the secret information exists if the first carrier information and the second carrier information are different.
  • the determining unit is further configured to determine, as the replacement steganography, a location where the first carrier information and the second carrier information are different. Modified location
  • the second obtaining unit is further configured to acquire the secret information at the modified location of the first carrier information.
  • the first acquiring unit processes the first carrier information, and obtaining the original carrier information includes:
  • the first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
  • whether the comparing unit compares the first carrier information with the second carrier information includes:
  • a third aspect of the embodiments of the present invention discloses a receiving device, where the receiving device includes a processor and a memory, and the processor executes the computer program stored in the memory to implement the amplitude difference according to any one of the foregoing first aspects.
  • Information detection method includes a processor and a memory, and the processor executes the computer program stored in the memory to implement the amplitude difference according to any one of the foregoing first aspects.
  • a computer readable storage medium storing at least one instruction, the at least one instruction being executed by a processor to implement the amplitude difference based information detection method of any of the above first aspects.
  • the embodiment of the invention has the following beneficial effects:
  • the receiving device may receive the first bearer information after the replacement of the steganography; process the first carrier information to obtain the original bearer information; and process the original bearer information to obtain the replacement before the steganography
  • the second carrier information is compared: whether there is a difference between the first carrier information and the second carrier information; if there is a difference between the first carrier information and the second carrier information, it is determined that the secret information exists. It can be seen that, in the embodiment of the present invention, the receiving device can restore the original carrier information, and further compare the second bearer information after replacing the steganography with the second carrier information before the steganography replacement. If there is a difference, the information can be detected. The location being replaced so that it can be determined that there is hidden information.
  • FIG. 1 is a diagram of a communication model for replacing steganography disclosed in an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a method for detecting information based on amplitude difference according to an embodiment of the present invention
  • FIG. 3 is a schematic flow chart of another method for detecting information based on amplitude difference according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an information detecting apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a receiving device according to an embodiment of the present invention.
  • the embodiment of the invention discloses a method, a device and a receiving device for detecting information based on the amplitude difference, which can accurately detect the secret information.
  • the details are described below in conjunction with the drawings.
  • FIG. 1 is a diagram of a communication model for replacing steganography disclosed in an embodiment of the present invention.
  • the alternative steganographic communication model can include two processes: a transmitting process and a receiving process.
  • the sending process is mainly performed by the sending device.
  • the sending device may include a base station or a user equipment.
  • a base station e.g., an access point
  • the base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the embodiment of the present invention is not limited.
  • User equipment may include, but is not limited to, a smart phone, a notebook computer, a personal computer (PC), a personal digital assistant (PDA), a mobile internet device (MID), a wearable device (such as a smart watch).
  • the operating system of the user device may include, but is not limited to, an Android operating system, an IOS operating system, a Symbian operating system, and a BlackBerry operating system.
  • the Windows Phone 8 operating system and the like are not limited in the embodiment of the present invention.
  • the transmitting device is divided into two paths, one is that the carrier information is encoded, and the other is that the secret information is encoded. After the two are encoded, the secret information is embedded in the carrier information, modulated, and then sent to the channel. The channel is sent to the receiving device.
  • the receiving process is mainly performed by the receiving device.
  • the receiving device may include a base station or a user equipment.
  • a base station e.g., an access point
  • the base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolution in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • WCDMA evolution in LTE.
  • a type of base station (NodeB or eNB or e-NodeB, evolutional Node B) is not limited in this embodiment of the present invention.
  • User equipment may include, but is not limited to, a smart phone, a notebook computer, a personal computer (PC), a personal digital assistant (PDA), a mobile internet device (MID), a wearable device (such as a smart watch).
  • Various types of electronic devices such as smart bracelets and smart glasses, wherein the operating system of the user device may include, but is not limited to, an Android operating system, an IOS operating system, a Symbian operating system, and a BlackBerry operating system.
  • the Windows Phone 8 operating system and the like are not limited in the embodiment of the present invention.
  • the demodulated signal is extracted and then decoded to obtain the secret information, and then the signal after the secret information is extracted is decoded to obtain the carrier information.
  • the specific embedding method of the secret information may be BINARY PHASE SHIFT KEYING (BPSK) as an example.
  • the carrier information is encoded into 0, 1 sequence, and the secret information is also 0, 1 sequence.
  • the secret information can randomly replace some positions of the carrier information to hide the information.
  • the carrier information 0 can be replaced by the secret information 1
  • the carrier information 1 can be replaced by the secret information 0, after BPSK is - 1 changes to 1, 1 changes to -1.
  • the number of bits of the secret information needs to be smaller than the number of bits that can be corrected by the error correction capability of the carrier information. For example, suppose that the encoded information bits have k bits, for a total of n symbols, then the number of bits that can be corrected Take an integer, so the number of bits of the secret information is less than t in order to replace the steganography.
  • FIG. 2 is a schematic flowchart diagram of an information detection method based on amplitude difference disclosed in an embodiment of the present invention. As shown in FIG. 2, the amplitude difference based information detecting method may include the following steps:
  • Step 201 The receiving device receives the first bearer information after replacing the steganography.
  • Substitute steganography means that the original information is embedded in the secret information after channel coding, and the secret information is directly replaced with the original part information to achieve the purpose of information hiding.
  • the transmitting device transmits the first bearer information after the steganography is replaced, and the receiving device can receive the first bearer information from the channel, wherein the first bearer information is the coded and modulated information.
  • Step 202 The receiving device processes the first carrier information to obtain original carrier information.
  • the receiving device may process the first carrier information.
  • the receiving device processes the first carrier information, and obtaining the original carrier information includes:
  • the first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
  • the receiving device demodulates the first carrier information
  • error correction encoding processing may be performed. Based on the error correction capability of the error correction coding, the replacement part does not affect the restoration identification of the original information, and the receiving device can use the error correction capability to restore the original carrier information.
  • Step 203 The receiving device processes the original carrier information to obtain second carrier information before replacing the steganography.
  • the original bearer information may be encoded and modulated to obtain second bearer information before the steganography is replaced.
  • the original carrier information is encoded and modulated to ensure that the obtained second carrier information and the first carrier information are subjected to the same processing for subsequent better comparison.
  • Step 204 The receiving device compares whether the first carrier information and the second carrier information are different.
  • the receiving device may compare the first carrier information with the second carrier information to determine whether there is a difference between the two.
  • the comparing, by the receiving device, whether the difference between the first carrier information and the second carrier information includes:
  • the receiving device can compare whether there is a difference between the waveform of the first carrier information and the waveform of the second carrier information. Specifically, whether the peaks of the waveforms of the two are different, if there is a difference, Then, it can be determined that the first carrier information and the second carrier information are different.
  • the receiving device may compare whether the bit sequence of the first carrier information and the bit sequence of the second carrier information are different, for example, the bit sequence of the first carrier information is 1 -1 1 1 -1, where the The bit sequence of the two carrier information is 1 -1 1 -1 -1, then it can be seen that the fourth bit has a difference of 2, and the other bits have a difference of 0. If the difference is obvious, the first carrier information can be determined. There is a difference from the second carrier information. Due to the influence of noise, when the specific difference is greater than or equal to 2, it is considered that there is a difference.
  • Step 205 If there is a difference between the first carrier information and the second carrier information, the receiving device determines that the secret information exists.
  • the second carrier information is information that is encoded and modulated on the original carrier information, and no other information is embedded in the second carrier information. If the first carrier information and the second carrier information are different, Determining that other information is embedded in the first carrier information and the location different from the second carrier information, further determining that the embedded other information is secret information.
  • the receiving device may receive the first bearer information after replacing the steganography; processing the first carrier information to obtain original carrier information; and processing the original carrier information to obtain replacement The second carrier information before the steganography; comparing whether the first carrier information and the second carrier information are different; if the first carrier information and the second carrier information are different, determining that the secret information exists. It can be seen that, in the embodiment of the present invention, the receiving device can restore the original carrier information, and further compare the second bearer information after replacing the steganography with the second carrier information before the steganography replacement. If there is a difference, the information can be detected. The location being replaced so that it can be determined that there is hidden information.
  • FIG. 3 is another information detection based on amplitude difference disclosed in an embodiment of the present invention. Schematic diagram of the process. As shown in FIG. 3, the amplitude difference based information detecting method may include the following steps:
  • Step 301 The receiving device receives the first bearer information after replacing the steganography.
  • Step 302 The receiving device processes the first carrier information to obtain original carrier information.
  • Step 303 The receiving device processes the original carrier information to obtain second carrier information before replacing the steganography.
  • Step 304 The receiving device compares whether the first carrier information and the second carrier information are different.
  • Step 305 If there is a difference between the first carrier information and the second carrier information, the receiving device determines that the secret information exists.
  • Step 306 The receiving device determines, where the first carrier information and the second carrier information are different, a location to replace the steganographic modification.
  • the second carrier information is information that is encoded and modulated on the original carrier information, and no other information is embedded in the second carrier information. If the first carrier information and the second carrier information are different, It is determined that other information (ie, secret information) is embedded in the first carrier information and the location different from the second carrier information. Further, the receiving device may determine a location where the first carrier information and the second carrier information are different as a modified location to replace the steganography.
  • Step 307 The receiving device acquires the secret information in the modified location of the first carrier information.
  • the secret information may be acquired after the demodulation and the corresponding decoding mode of the modified location of the first carrier information.
  • the method described in FIG. 3 is implemented, and can be replaced after detecting the presence of the secret information. Obtain hidden information in a steganographic location.
  • FIG. 4 is a schematic structural diagram of an information detecting apparatus according to an embodiment of the present invention.
  • the information detecting apparatus described in FIG. 4 may be used to perform some or all of the steps of the amplitude difference based information detecting method described in FIG. 2 or FIG. 3, and specifically refer to the related description in FIG. 2 or FIG. This will not be repeated here.
  • the information detecting apparatus may include:
  • the receiving unit 401 is configured to receive the first bearer information after replacing the steganography
  • the first obtaining unit 402 is configured to process the first carrier information to obtain original carrier information.
  • the second obtaining unit 403 is configured to process the original carrier information to obtain second carrier information before replacing the steganography;
  • the comparing unit 404 is configured to compare whether the first carrier information and the second carrier information are different.
  • the determining unit 405 is configured to determine that the secret information exists if the first carrier information and the second carrier information are different.
  • the determining unit 405 is further configured to determine, where the first carrier information and the second carrier information are different, a location to replace the steganographic modification;
  • the second obtaining unit 403 is further configured to acquire the secret information in the modified location of the first carrier information.
  • the first obtaining unit 402 processes the first carrier information, and obtaining the original carrier information includes:
  • the first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
  • the comparison unit 404 compares whether the first carrier information and the second carrier information are different, including:
  • the information detecting apparatus described in FIG. 4 may receive the first bearer information after replacing the steganography; process the first carrier information to obtain original carrier information; and process the original carrier information to obtain replacement.
  • the above-described integrated unit implemented in the form of a software function module can be stored in a computer readable storage medium.
  • the computer readable storage medium can store a computer program, which when executed by the processor, can implement the steps in the foregoing method embodiments.
  • the computer program comprises computer program code, which may be in the form of source code, object code form, executable file or some intermediate form.
  • the computer readable storage medium may include any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read only memory (ROM, Read-Only Memory). ), random access memory (RAM, Random-Access Memory), electrical carrier signals, telecommunications signals, and software distribution media. It should be noted that the content contained in the computer readable storage medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in a jurisdiction.
  • FIG. 5 is a schematic structural diagram of a receiving device according to an embodiment of the present invention.
  • the receiving device shown in FIG. 5 includes a processor 501 and a memory 502.
  • the processor 501 and the memory 502 are respectively connected to a communication bus.
  • the memory 502 may be a high speed RAM memory or a non-volatile memory. It will be understood by those skilled in the art that the structure of the receiving device shown in FIG. 5 does not constitute a limitation of the present invention, and it may be a bus-shaped structure or a star-shaped structure, and may further include more than that shown in FIG. 5. More or less parts, or some parts, or different parts.
  • the processor 501 is a control center of the receiving device, and may be a central processing unit (CPU).
  • the processor 501 connects various parts of the entire receiving device by using various interfaces and lines, and is stored in the memory 502 by running or executing.
  • processor 501 may also call program code stored in the memory 502 for performing the following operations:
  • the processing the first carrier information to obtain the original carrier information includes:
  • the first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
  • the comparing whether the first carrier information and the second carrier information are different include:
  • the receiving device may receive the first bearer information after the replacement of the steganography; process the first carrier information to obtain the original bearer information; and process the original bearer information to obtain a replacement. Second carrier information before steganography; comparing the first carrier information with Whether there is a difference in the second carrier information; if there is a difference between the first carrier information and the second carrier information, it is determined that the secret information exists. It can be seen that, in the embodiment of the present invention, the receiving device can restore the original carrier information, and further compare the second bearer information after replacing the steganography with the second carrier information before the steganography replacement. If there is a difference, the information can be detected. The location being replaced so that it can be determined that there is hidden information.
  • the disclosed apparatus may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a memory. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. And before The memory includes: U disk, read-only memory (ROM), random access memory (RAM), random access memory (RAM), mobile hard disk, disk or optical disk, and other media that can store program code.
  • ROM read-only memory
  • RAM random access memory
  • RAM random access memory
  • mobile hard disk disk or optical disk, and other media that can store program code.
  • ROM Read-Only Memory
  • RAM Random Access Memory

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Abstract

Disclosed are an information detection method and apparatus based on an amplitude difference, and a receiving device. The method comprises: receiving first carrier information after replacement steganography; processing the first carrier information to obtain original carrier information; processing the original carrier information to obtain second carrier information before replacement steganography; comparing whether the first carrier information and the second carrier information have a difference; and if the first carrier information and the second carrier information have a difference, determining that concealed information exists. By means of the embodiments of the present invention, concealed information can be detected accurately.

Description

基于幅度差的信息检测方法、装置及接收设备Information detection method, device and receiving device based on amplitude difference 技术领域Technical field
本发明涉及通信技术领域，尤其涉及一种基于幅度差的信息检测方法、装置及接收设备。The present invention relates to the field of communications technologies, and in particular, to an information detection method, apparatus, and receiving device based on amplitude difference.
背景技术Background technique
替换隐写，是指原始信息在信道编码之后，嵌入隐秘信息，将隐秘信息直接替换原有的部分信息来达到信息隐藏目的。Substitute steganography means that the original information is embedded in the secret information after channel coding, and the secret information is directly replaced with the original part information to achieve the purpose of information hiding.
目前，隐写分析技术中，在针对最低有效位(Least Significant Bit，LSB)隐写的检测方面，卡方检测法是最早的检测算法，其通过定义一个卡方统计量来测试图像存在这种统计特性的概率，实现了对顺序LSB替换的检测，但无法检测随机位置的LSB替换。针对LSB匹配的检测算法基本采用了神经网络、模式识别等方法，对特征集进行训练来提取有效的特征，再通过多个特征的联合判决实现对隐秘信息的检测，但这些方法运算量大、检测结果不够精确，并且具有局限性。At present, in the steganalysis technique, the chi-square detection method is the earliest detection algorithm for the detection of Least Significant Bit (LSB) steganography, which tests the image by defining a chi-square statistic. The probability of statistical characteristics enables detection of sequential LSB replacement, but does not detect LSB replacement at random locations. The detection algorithm for LSB matching basically adopts methods such as neural network and pattern recognition. The feature set is trained to extract effective features, and then the joint information of multiple features is used to detect the hidden information. However, these methods are computationally intensive. The test results are not precise enough and have limitations.
发明内容Summary of the invention
本发明实施例公开了一种基于幅度差的信息检测方法、装置及接收设备，能够精确地对隐秘信息进行检测。The embodiment of the invention discloses a method, a device and a receiving device for detecting information based on the amplitude difference, which can accurately detect the secret information.
本发明实施例第一方面公开一种基于幅度差的信息检测方法，包括：A first aspect of the embodiments of the present invention discloses a method for detecting information based on an amplitude difference, including:
接收替换隐写后的第一载体信息；Receiving replacement of the first carrier information after steganography;
对所述第一载体信息进行处理，获得原始载体信息；Processing the first carrier information to obtain original carrier information;
将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；Processing the original carrier information to obtain second carrier information before replacing the steganography;
比较所述第一载体信息与所述第二载体信息是否存在差别；Comparing whether the first carrier information and the second carrier information are different;
若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。If there is a difference between the first carrier information and the second carrier information, it is determined that the secret information exists.
作为一种可选的实施方式，在本发明实施例第一方面中，所述方法还包 括：As an optional implementation manner, in the first aspect of the embodiments of the present invention, the method further includes include:
将所述第一载体信息与所述第二载体信息存在差别的位置确定为替换隐写的修改位置；Determining, by the location where the first carrier information and the second carrier information are different, a replacement location of the steganography;
在所述第一载体信息的所述修改位置，获取所述隐秘信息。And acquiring the secret information at the modified location of the first carrier information.
作为一种可选的实施方式，在本发明实施例第一方面中，所述对所述第一载体信息进行处理，获得原始载体信息包括：As an optional implementation manner, in the first aspect of the embodiment of the present invention, the processing the first carrier information to obtain the original carrier information includes:
对所述第一载体信息进行解调以及纠错编码处理，获得原始载体信息。The first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
作为一种可选的实施方式，在本发明实施例第一方面中，所述比较所述第一载体信息与所述第二载体信息是否存在差别包括：As an optional implementation manner, in the first aspect of the embodiment of the present invention, the comparing whether the first carrier information and the second carrier information are different include:
比较所述第一载体信息的波形与所述第二载体信息的波形是否存在差别；或Comparing whether there is a difference between a waveform of the first carrier information and a waveform of the second carrier information; or
比较所述第一载体信息的比特序列与所述第二载体信息的比特序列是否存在差别。Comparing whether there is a difference between the bit sequence of the first carrier information and the bit sequence of the second carrier information.
本发明实施例第二方面公开一种信息检测装置，包括：A second aspect of the embodiments of the present invention discloses an information detecting apparatus, including:
接收单元，用于接收替换隐写后的第一载体信息；a receiving unit, configured to receive the first bearer information after replacing the steganography;
第一获取单元，用于对所述第一载体信息进行处理，获得原始载体信息；a first acquiring unit, configured to process the first carrier information to obtain original carrier information;
第二获取单元，用于将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；a second acquiring unit, configured to process the original carrier information to obtain second carrier information before replacing the steganography;
比较单元，用于比较所述第一载体信息与所述第二载体信息是否存在差别；a comparing unit, configured to compare whether the first carrier information and the second carrier information are different;
确定单元，用于若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。And a determining unit, configured to determine that the secret information exists if the first carrier information and the second carrier information are different.
作为一种可选的实施方式，在本发明实施例第二方面中，所述确定单元，还用于将所述第一载体信息与所述第二载体信息存在差别的位置确定为替换隐写的修改位置； As an optional implementation manner, in the second aspect of the embodiments of the present invention, the determining unit is further configured to determine, as the replacement steganography, a location where the first carrier information and the second carrier information are different. Modified location
所述第二获取单元，还用于在所述第一载体信息的所述修改位置，获取所述隐秘信息。The second obtaining unit is further configured to acquire the secret information at the modified location of the first carrier information.
作为一种可选的实施方式，在本发明实施例第二方面中，所述第一获取单元对所述第一载体信息进行处理，获得原始载体信息包括：As an optional implementation manner, in the second aspect of the embodiment of the present invention, the first acquiring unit processes the first carrier information, and obtaining the original carrier information includes:
对所述第一载体信息进行解调以及纠错编码处理，获得原始载体信息。The first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
作为一种可选的实施方式，在本发明实施例第二方面中，所述比较单元比较所述第一载体信息与所述第二载体信息是否存在差别包括：As an optional implementation manner, in the second aspect of the embodiment of the present invention, whether the comparing unit compares the first carrier information with the second carrier information includes:
比较所述第一载体信息的波形与所述第二载体信息的波形是否存在差别；或Comparing whether there is a difference between a waveform of the first carrier information and a waveform of the second carrier information; or
比较所述第一载体信息的比特序列与所述第二载体信息的比特序列是否存在差别。Comparing whether there is a difference between the bit sequence of the first carrier information and the bit sequence of the second carrier information.
本发明实施例第三方面公开一种接收设备，所述接收设备包括处理器和存储器，所述处理器执行所述存储器存储的计算机程序以实现上述第一方面任一项所述的基于幅度差的信息检测方法。A third aspect of the embodiments of the present invention discloses a receiving device, where the receiving device includes a processor and a memory, and the processor executes the computer program stored in the memory to implement the amplitude difference according to any one of the foregoing first aspects. Information detection method.
一种计算机可读存储介质，所述计算机可读存储介质存储有至少一个指令，所述至少一个指令被处理器执行时实现上述第一方面任一项所述的基于幅度差的信息检测方法。A computer readable storage medium storing at least one instruction, the at least one instruction being executed by a processor to implement the amplitude difference based information detection method of any of the above first aspects.
与现有技术相比，本发明实施例具备以下有益效果：Compared with the prior art, the embodiment of the invention has the following beneficial effects:
本发明实施例中，接收设备可以接收替换隐写后的第一载体信息；对所述第一载体信息进行处理，获得原始载体信息；将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；比较所述第一载体信息与所述第二载体信息是否存在差别；若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。可见，实施本发明实施例，接收设备可以还原出原始载体信息，进一步将替换隐写后的第一载体信息与替换隐写前的第二载体信息进行比较，若存在不同，则可以检测出信息被替换的位置，从而可以确定存在隐秘信息。 In the embodiment of the present invention, the receiving device may receive the first bearer information after the replacement of the steganography; process the first carrier information to obtain the original bearer information; and process the original bearer information to obtain the replacement before the steganography The second carrier information is compared: whether there is a difference between the first carrier information and the second carrier information; if there is a difference between the first carrier information and the second carrier information, it is determined that the secret information exists. It can be seen that, in the embodiment of the present invention, the receiving device can restore the original carrier information, and further compare the second bearer information after replacing the steganography with the second carrier information before the steganography replacement. If there is a difference, the information can be detected. The location being replaced so that it can be determined that there is hidden information.
附图说明DRAWINGS
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.
图1是本发明实施例公开的一种替换隐写的通信模型图；1 is a diagram of a communication model for replacing steganography disclosed in an embodiment of the present invention;
图2是本发明实施例公开的一种基于幅度差的信息检测方法的流程示意图；2 is a schematic flow chart of a method for detecting information based on amplitude difference according to an embodiment of the present invention;
图3是本发明实施例公开的另一种基于幅度差的信息检测方法的流程示意图；3 is a schematic flow chart of another method for detecting information based on amplitude difference according to an embodiment of the present invention;
图4是本发明实施例公开的一种信息检测装置的结构示意图；4 is a schematic structural diagram of an information detecting apparatus according to an embodiment of the present invention;
图5是本发明实施例公开的一种接收设备的结构示意图。FIG. 5 is a schematic structural diagram of a receiving device according to an embodiment of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”和“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。It should be noted that the terms "first" and "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish different objects, and are not intended to describe a specific order. Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment.
本发明实施例公开了一种基于幅度差的信息检测方法、装置及接收设备，能够精确地对隐秘信息进行检测。以下进行结合附图进行详细描述。 The embodiment of the invention discloses a method, a device and a receiving device for detecting information based on the amplitude difference, which can accurately detect the secret information. The details are described below in conjunction with the drawings.
请参阅图1，图1是本发明实施例公开的一种替换隐写的通信模型图。如图1所示，该替换隐写的通信模型可以包括两个过程：发送过程和接收过程。Please refer to FIG. 1. FIG. 1 is a diagram of a communication model for replacing steganography disclosed in an embodiment of the present invention. As shown in FIG. 1, the alternative steganographic communication model can include two processes: a transmitting process and a receiving process.
其中，发送过程主要由发送设备来执行。其中，发送设备可以包括基站或用户设备。基站(例如接入点)可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中，接入网的其余部分可包括网际协议(IP)网络。基站还可以协调对空中接口的属性管理。例如，基站可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，本发明实施例不做限定。用户设备可以包括但不限于智能手机、笔记本电脑、个人计算机(Personal Computer，PC)、个人数字助理(Personal Digital Assistant,PDA)、移动互联网设备(Mobile Internet Device，MID)、穿戴设备(如智能手表、智能手环、智能眼镜)等各类电子设备，其中，该用户设备的操作系统可包括但不限于Android操作系统、IOS操作系统、Symbian(塞班)操作系统、Black Berry(黑莓)操作系统、Windows Phone8操作系统等等，本发明实施例不做限定。The sending process is mainly performed by the sending device. The sending device may include a base station or a user equipment. A base station (e.g., an access point) can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the embodiment of the present invention is not limited. User equipment may include, but is not limited to, a smart phone, a notebook computer, a personal computer (PC), a personal digital assistant (PDA), a mobile internet device (MID), a wearable device (such as a smart watch). Various types of electronic devices, such as smart bracelets and smart glasses, wherein the operating system of the user device may include, but is not limited to, an Android operating system, an IOS operating system, a Symbian operating system, and a BlackBerry operating system. The Windows Phone 8 operating system and the like are not limited in the embodiment of the present invention.
在发送过程中，发送设备分为两路，一路是载体信息经过编码，另一路是隐秘信息经过编码，二者编码后，再将隐秘信息嵌入到载体信息中，进行调制，再送入信道，经信道发送给接收设备。In the transmission process, the transmitting device is divided into two paths, one is that the carrier information is encoded, and the other is that the secret information is encoded. After the two are encoded, the secret information is embedded in the carrier information, modulated, and then sent to the channel. The channel is sent to the receiving device.
其中，接收过程主要由接收设备来执行。其中，接收设备可以包括基站或用户设备。基站(例如接入点)可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中，接入网的其余部分可包括网际协议(IP)网络。基站还可以协调对空中接口的属性管理。例如，基站可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进 型基站(NodeB或eNB或e-NodeB，evolutional Node B)，本发明实施例不做限定。用户设备可以包括但不限于智能手机、笔记本电脑、个人计算机(Personal Computer，PC)、个人数字助理(Personal Digital Assistant,PDA)、移动互联网设备(Mobile Internet Device，MID)、穿戴设备(如智能手表、智能手环、智能眼镜)等各类电子设备，其中，该用户设备的操作系统可包括但不限于Android操作系统、IOS操作系统、Symbian(塞班)操作系统、Black Berry(黑莓)操作系统、Windows Phone8操作系统等等，本发明实施例不做限定。The receiving process is mainly performed by the receiving device. The receiving device may include a base station or a user equipment. A base station (e.g., an access point) can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolution in LTE. A type of base station (NodeB or eNB or e-NodeB, evolutional Node B) is not limited in this embodiment of the present invention. User equipment may include, but is not limited to, a smart phone, a notebook computer, a personal computer (PC), a personal digital assistant (PDA), a mobile internet device (MID), a wearable device (such as a smart watch). Various types of electronic devices, such as smart bracelets and smart glasses, wherein the operating system of the user device may include, but is not limited to, an Android operating system, an IOS operating system, a Symbian operating system, and a BlackBerry operating system. The Windows Phone 8 operating system and the like are not limited in the embodiment of the present invention.
在接收过程中，接收设备对接收到的信号解调后，先对解调后的进行提取然后解码，以获得隐秘信息，再对提取隐秘信息之后的信号进行解码，以获取载体信息。In the receiving process, after the receiving device demodulates the received signal, the demodulated signal is extracted and then decoded to obtain the secret information, and then the signal after the secret information is extracted is decoded to obtain the carrier information.
具体的，隐秘信息的具体嵌入方式可以以二进制相移键控(BINARY PHASE SHIFT KEYING，BPSK)为例说明，载体信息经过编码后变成0、1序列，隐秘信息编码后也是0、1序列，则隐秘信息可以随机替换载体信息的某些位置而进行信息的隐藏，此时，载体信息的0可以被隐秘信息的1替换，载体信息的1可以被隐秘信息的0替换，经过BPSK也就是-1变1，1变-1。当然，为了确保后续能够恢复原始载体信息，隐秘信息的位数需要小于载体信息的纠错能力所能纠错的位数。举例来说，假设编码后信息位有k位，总共n个码元，那么能纠错的位数
Figure PCTCN2017111215-appb-000001
取整数，所以，隐秘信息的位数要小于t，才能进行替换隐写。Specifically, the specific embedding method of the secret information may be BINARY PHASE SHIFT KEYING (BPSK) as an example. The carrier information is encoded into 0, 1 sequence, and the secret information is also 0, 1 sequence. Then, the secret information can randomly replace some positions of the carrier information to hide the information. At this time, the carrier information 0 can be replaced by the secret information 1, and the carrier information 1 can be replaced by the secret information 0, after BPSK is - 1 changes to 1, 1 changes to -1. Of course, in order to ensure that the original carrier information can be restored later, the number of bits of the secret information needs to be smaller than the number of bits that can be corrected by the error correction capability of the carrier information. For example, suppose that the encoded information bits have k bits, for a total of n symbols, then the number of bits that can be corrected
Figure PCTCN2017111215-appb-000001
Take an integer, so the number of bits of the secret information is less than t in order to replace the steganography.
请参阅图2，图2是本发明实施例公开的一种基于幅度差的信息检测方法的流程示意图。如图2所示，该基于幅度差的信息检测方法可以包括以下步骤：Please refer to FIG. 2. FIG. 2 is a schematic flowchart diagram of an information detection method based on amplitude difference disclosed in an embodiment of the present invention. As shown in FIG. 2, the amplitude difference based information detecting method may include the following steps:
步骤201、接收设备接收替换隐写后的第一载体信息。Step 201: The receiving device receives the first bearer information after replacing the steganography.
替换隐写，是指原始信息在信道编码之后，嵌入隐秘信息，将隐秘信息直接替换原有的部分信息来达到信息隐藏目的。 Substitute steganography means that the original information is embedded in the secret information after channel coding, and the secret information is directly replaced with the original part information to achieve the purpose of information hiding.
本发明中，发送设备将替换隐写后的第一载体信息经信道发送出去，接收设备就可以从信道中接收该第一载体信息，其中，该第一载体信息为经过编码调制后的信息。In the present invention, the transmitting device transmits the first bearer information after the steganography is replaced, and the receiving device can receive the first bearer information from the channel, wherein the first bearer information is the coded and modulated information.
步骤202、接收设备对所述第一载体信息进行处理，获得原始载体信息。Step 202: The receiving device processes the first carrier information to obtain original carrier information.
本发明中，接收设备接收到第一载体信息之后，可以对第一载体信息进行处理。In the present invention, after receiving the first carrier information, the receiving device may process the first carrier information.
具体的，所述接收设备对所述第一载体信息进行处理，获得原始载体信息包括：Specifically, the receiving device processes the first carrier information, and obtaining the original carrier information includes:
对所述第一载体信息进行解调以及纠错编码处理，获得原始载体信息。The first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
在该实施例中，接收设备对第一载体信息进行解调之后，进一步地，可以进行纠错编码处理。基于纠错编码的纠错能力，替换的部分不影响原始信息的还原识别，接收设备可以利用该纠错能力，还原出原始载体信息。In this embodiment, after the receiving device demodulates the first carrier information, further, error correction encoding processing may be performed. Based on the error correction capability of the error correction coding, the replacement part does not affect the restoration identification of the original information, and the receiving device can use the error correction capability to restore the original carrier information.
步骤203、接收设备将所述原始载体信息进行处理，获得替换隐写前的第二载体信息。Step 203: The receiving device processes the original carrier information to obtain second carrier information before replacing the steganography.
具体的，接收设备获得原始载体信息之后，可以对所述原始载体信息进行编码以及调制处理，以获得替换隐写前的第二载体信息。Specifically, after the receiving device obtains the original bearer information, the original bearer information may be encoded and modulated to obtain second bearer information before the steganography is replaced.
本发明中，对所述原始载体信息进行编码以及调制处理，是为了确保获得的第二载体信息与第一载体信息经过相同的处理，以便后续更好的对比。In the present invention, the original carrier information is encoded and modulated to ensure that the obtained second carrier information and the first carrier information are subjected to the same processing for subsequent better comparison.
步骤204、接收设备比较所述第一载体信息与所述第二载体信息是否存在差别。Step 204: The receiving device compares whether the first carrier information and the second carrier information are different.
本发明中，在获得替换隐写前的第二载体信息之后，接收设备就可以将第一载体信息与所述第二载体信息进行比较，以确定二者是否存在差别。In the present invention, after obtaining the second carrier information before the replacement of the steganography, the receiving device may compare the first carrier information with the second carrier information to determine whether there is a difference between the two.
具体的，所述接收设备比较所述第一载体信息与所述第二载体信息是否存在差别包括：Specifically, the comparing, by the receiving device, whether the difference between the first carrier information and the second carrier information includes:
比较所述第一载体信息的波形与所述第二载体信息的波形是否存在差别；或Comparing whether there is a difference between a waveform of the first carrier information and a waveform of the second carrier information; or
比较所述第一载体信息的比特序列与所述第二载体信息的比特序列是否 存在差别。Comparing whether the bit sequence of the first carrier information and the bit sequence of the second carrier information are There are differences.
在该实施例中，接收设备可以比较所述第一载体信息的波形与所述第二载体信息的波形是否存在差别，具体的，可以比较二者的波形的峰值是否存在差别，若存在差别，则可以确定所述第一载体信息与所述第二载体信息存在差别。In this embodiment, the receiving device can compare whether there is a difference between the waveform of the first carrier information and the waveform of the second carrier information. Specifically, whether the peaks of the waveforms of the two are different, if there is a difference, Then, it can be determined that the first carrier information and the second carrier information are different.
或者，接收设备可以比较所述第一载体信息的比特序列与所述第二载体信息的比特序列是否存在差别，比如：第一载体信息的比特序列为1 -1 1 1 -1，所述第二载体信息的比特序列为1 -1 1 -1 -1，则可以看出第4位二者相差为2，其它位二者相差为0，差别很明显，则可以确定所述第一载体信息与所述第二载体信息存在差别。由于噪声影响，在具体处理时，当相差大于或等于2时，即认为存在差别。Alternatively, the receiving device may compare whether the bit sequence of the first carrier information and the bit sequence of the second carrier information are different, for example, the bit sequence of the first carrier information is 1 -1 1 1 -1, where the The bit sequence of the two carrier information is 1 -1 1 -1 -1, then it can be seen that the fourth bit has a difference of 2, and the other bits have a difference of 0. If the difference is obvious, the first carrier information can be determined. There is a difference from the second carrier information. Due to the influence of noise, when the specific difference is greater than or equal to 2, it is considered that there is a difference.
步骤205、若所述第一载体信息与所述第二载体信息存在差别，接收设备确定存在隐秘信息。Step 205: If there is a difference between the first carrier information and the second carrier information, the receiving device determines that the secret information exists.
本发明中，第二载体信息为对原始载体信息经过编码调制后的信息，该第二载体信息内没有嵌入其他信息，若所述第一载体信息与所述第二载体信息存在差别，则可以确定所述第一载体信息中与与所述第二载体信息存在差别的位置嵌入了其他信息，则进一步可以确定该嵌入的其他信息为隐秘信息。In the present invention, the second carrier information is information that is encoded and modulated on the original carrier information, and no other information is embedded in the second carrier information. If the first carrier information and the second carrier information are different, Determining that other information is embedded in the first carrier information and the location different from the second carrier information, further determining that the embedded other information is secret information.
其中，实施图2所描述的方法，接收设备可以接收替换隐写后的第一载体信息；对所述第一载体信息进行处理，获得原始载体信息；将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；比较所述第一载体信息与所述第二载体信息是否存在差别；若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。可见，实施本发明实施例，接收设备可以还原出原始载体信息，进一步将替换隐写后的第一载体信息与替换隐写前的第二载体信息进行比较，若存在不同，则可以检测出信息被替换的位置，从而可以确定存在隐秘信息。Wherein, implementing the method described in FIG. 2, the receiving device may receive the first bearer information after replacing the steganography; processing the first carrier information to obtain original carrier information; and processing the original carrier information to obtain replacement The second carrier information before the steganography; comparing whether the first carrier information and the second carrier information are different; if the first carrier information and the second carrier information are different, determining that the secret information exists. It can be seen that, in the embodiment of the present invention, the receiving device can restore the original carrier information, and further compare the second bearer information after replacing the steganography with the second carrier information before the steganography replacement. If there is a difference, the information can be detected. The location being replaced so that it can be determined that there is hidden information.
请参阅图3，图3是本发明实施例公开的另一种基于幅度差的信息检测 方法的流程示意图。如图3所示，该基于幅度差的信息检测方法可以包括以下步骤：Please refer to FIG. 3. FIG. 3 is another information detection based on amplitude difference disclosed in an embodiment of the present invention. Schematic diagram of the process. As shown in FIG. 3, the amplitude difference based information detecting method may include the following steps:
步骤301、接收设备接收替换隐写后的第一载体信息。Step 301: The receiving device receives the first bearer information after replacing the steganography.
步骤302、接收设备对所述第一载体信息进行处理，获得原始载体信息。Step 302: The receiving device processes the first carrier information to obtain original carrier information.
步骤303、接收设备将所述原始载体信息进行处理，获得替换隐写前的第二载体信息。Step 303: The receiving device processes the original carrier information to obtain second carrier information before replacing the steganography.
步骤304、接收设备比较所述第一载体信息与所述第二载体信息是否存在差别。Step 304: The receiving device compares whether the first carrier information and the second carrier information are different.
步骤305、若所述第一载体信息与所述第二载体信息存在差别，接收设备确定存在隐秘信息。Step 305: If there is a difference between the first carrier information and the second carrier information, the receiving device determines that the secret information exists.
步骤306、接收设备将所述第一载体信息与所述第二载体信息存在差别的位置确定为替换隐写的修改位置。Step 306: The receiving device determines, where the first carrier information and the second carrier information are different, a location to replace the steganographic modification.
本发明中，第二载体信息为对原始载体信息经过编码调制后的信息，该第二载体信息内没有嵌入其他信息，若所述第一载体信息与所述第二载体信息存在差别，则可以确定所述第一载体信息中与与所述第二载体信息存在差别的位置嵌入了其他信息(即隐秘信息)。进一步地，接收设备就可以将所述第一载体信息与所述第二载体信息存在差别的位置确定为替换隐写的修改位置。In the present invention, the second carrier information is information that is encoded and modulated on the original carrier information, and no other information is embedded in the second carrier information. If the first carrier information and the second carrier information are different, It is determined that other information (ie, secret information) is embedded in the first carrier information and the location different from the second carrier information. Further, the receiving device may determine a location where the first carrier information and the second carrier information are different as a modified location to replace the steganography.
步骤307、接收设备在所述第一载体信息的所述修改位置，获取所述隐秘信息。Step 307: The receiving device acquires the secret information in the modified location of the first carrier information.
本发明中，接收设备已经确定隐秘信息被替换隐写的位置，则可以在所述第一载体信息的所述修改位置进行解调以及对应的解码方式后，就能获取所述隐秘信息了。In the present invention, after the receiving device has determined that the secret information is replaced by the steganographic location, the secret information may be acquired after the demodulation and the corresponding decoding mode of the modified location of the first carrier information.
其中，实施图3所描述的方法，能够在检测存在隐秘信息之后，在替换 隐写的位置上获取隐秘信息。Wherein, the method described in FIG. 3 is implemented, and can be replaced after detecting the presence of the secret information. Obtain hidden information in a steganographic location.
请参阅图4，图4是本发明实施例公开的一种信息检测装置的结构示意图。其中，图4所描述的信息检测装置可以用于执行图2或图3所描述的基于幅度差的信息检测方法中的部分或全部步骤，具体请参见图2或图3中的相关描述，在此不再赘述。如图4所示，该信息检测装置可以包括：Please refer to FIG. 4. FIG. 4 is a schematic structural diagram of an information detecting apparatus according to an embodiment of the present invention. The information detecting apparatus described in FIG. 4 may be used to perform some or all of the steps of the amplitude difference based information detecting method described in FIG. 2 or FIG. 3, and specifically refer to the related description in FIG. 2 or FIG. This will not be repeated here. As shown in FIG. 4, the information detecting apparatus may include:
接收单元401，用于接收替换隐写后的第一载体信息；The receiving unit 401 is configured to receive the first bearer information after replacing the steganography;
第一获取单元402，用于对所述第一载体信息进行处理，获得原始载体信息；The first obtaining unit 402 is configured to process the first carrier information to obtain original carrier information.
第二获取单元403，用于将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；The second obtaining unit 403 is configured to process the original carrier information to obtain second carrier information before replacing the steganography;
比较单元404，用于比较所述第一载体信息与所述第二载体信息是否存在差别；The comparing unit 404 is configured to compare whether the first carrier information and the second carrier information are different.
确定单元405，用于若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。The determining unit 405 is configured to determine that the secret information exists if the first carrier information and the second carrier information are different.
可选的，所述确定单元405，还用于将所述第一载体信息与所述第二载体信息存在差别的位置确定为替换隐写的修改位置；Optionally, the determining unit 405 is further configured to determine, where the first carrier information and the second carrier information are different, a location to replace the steganographic modification;
所述第二获取单元403，还用于在所述第一载体信息的所述修改位置，获取所述隐秘信息。The second obtaining unit 403 is further configured to acquire the secret information in the modified location of the first carrier information.
可选的，所述第一获取单元402对所述第一载体信息进行处理，获得原始载体信息包括：Optionally, the first obtaining unit 402 processes the first carrier information, and obtaining the original carrier information includes:
对所述第一载体信息进行解调以及纠错编码处理，获得原始载体信息。The first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
可选的，所述比较单元404比较所述第一载体信息与所述第二载体信息是否存在差别包括：Optionally, the comparison unit 404 compares whether the first carrier information and the second carrier information are different, including:
比较所述第一载体信息的波形与所述第二载体信息的波形是否存在差别；或Comparing whether there is a difference between a waveform of the first carrier information and a waveform of the second carrier information; or
比较所述第一载体信息的比特序列与所述第二载体信息的比特序列是否存在差别。 Comparing whether there is a difference between the bit sequence of the first carrier information and the bit sequence of the second carrier information.
其中，实施图4所描述的信息检测装置，可以接收替换隐写后的第一载体信息；对所述第一载体信息进行处理，获得原始载体信息；将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；比较所述第一载体信息与所述第二载体信息是否存在差别；若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。可见，实施本发明实施例，可以还原出原始载体信息，进一步将替换隐写后的第一载体信息与替换隐写前的第二载体信息进行比较，若存在不同，则可以检测出信息被替换的位置，从而可以确定存在隐秘信息。The information detecting apparatus described in FIG. 4 may receive the first bearer information after replacing the steganography; process the first carrier information to obtain original carrier information; and process the original carrier information to obtain replacement. The second carrier information before the steganography; comparing whether the first carrier information and the second carrier information are different; if the first carrier information and the second carrier information are different, determining that the secret information exists. It can be seen that, in the embodiment of the present invention, the original carrier information can be restored, and the first bearer information after the replacement of the steganography is further compared with the second carrier information before the steganography is replaced. If there is a difference, the information can be detected to be replaced. The location so that it can be determined that there is hidden information.
上述以软件功能模块的形式实现的集成的单元，可以存储在一个计算机可读存储介质中。其中，该计算机可读存储介质可以存储计算机程序，该计算机程序在被处理器执行时，可实现上述各个方法实施例中的步骤。其中，该计算机程序包括计算机程序代码，所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读存储介质可以包括：能够携带所述计算机程序代码的任何实体或装置、记录介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random-Access Memory)、电载波信号、电信信号以及软件分发介质等。需要说明的是，所述计算机可读存储介质包含的内容可以根据司法管辖区内立法和专利实践的要求进行适当的增减。The above-described integrated unit implemented in the form of a software function module can be stored in a computer readable storage medium. Wherein, the computer readable storage medium can store a computer program, which when executed by the processor, can implement the steps in the foregoing method embodiments. Wherein, the computer program comprises computer program code, which may be in the form of source code, object code form, executable file or some intermediate form. The computer readable storage medium may include any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read only memory (ROM, Read-Only Memory). ), random access memory (RAM, Random-Access Memory), electrical carrier signals, telecommunications signals, and software distribution media. It should be noted that the content contained in the computer readable storage medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in a jurisdiction.
请参阅图5，图5是本发明实施例公开的一种接收设备的结构示意图。其中，图5所示的接收设备包括处理器501和存储器502。其中，所述处理器501以及存储器502分别连接通信总线。存储器502可以是高速RAM存储器，也可以是非易失性的存储器(non-volatile memory)。本领域技术人员可以理解，图5中示出的接收设备的结构并不构成对本发明的限定，它既可以是总线形结构，也可以是星型结构，还可以包括比图5所示的更多或更少的部件，或者组合某些部件，或者不同的部件布置。 Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a receiving device according to an embodiment of the present invention. The receiving device shown in FIG. 5 includes a processor 501 and a memory 502. The processor 501 and the memory 502 are respectively connected to a communication bus. The memory 502 may be a high speed RAM memory or a non-volatile memory. It will be understood by those skilled in the art that the structure of the receiving device shown in FIG. 5 does not constitute a limitation of the present invention, and it may be a bus-shaped structure or a star-shaped structure, and may further include more than that shown in FIG. 5. More or less parts, or some parts, or different parts.
其中，处理器501为接收设备的控制中心，可以是中央处理器(Central Processing Unit，CPU)，处理器501利用各种接口和线路连接整个接收设备的各个部分，通过运行或执行存储在存储器502内的软件程序和/或模块，以及调用存储在存储器502内存储的程序代码，用于执行以下操作：The processor 501 is a control center of the receiving device, and may be a central processing unit (CPU). The processor 501 connects various parts of the entire receiving device by using various interfaces and lines, and is stored in the memory 502 by running or executing. Software programs and/or modules within, as well as calling program code stored in memory 502 for performing the following operations:
接收替换隐写后的第一载体信息；Receiving replacement of the first carrier information after steganography;
对所述第一载体信息进行处理，获得原始载体信息；Processing the first carrier information to obtain original carrier information;
将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；Processing the original carrier information to obtain second carrier information before replacing the steganography;
比较所述第一载体信息与所述第二载体信息是否存在差别；Comparing whether the first carrier information and the second carrier information are different;
若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。If there is a difference between the first carrier information and the second carrier information, it is determined that the secret information exists.
作为一种可选的实施方式，所述处理器501还可以调用存储在存储器502内存储的程序代码，用于执行以下操作：As an optional implementation manner, the processor 501 may also call program code stored in the memory 502 for performing the following operations:
将所述第一载体信息与所述第二载体信息存在差别的位置确定为替换隐写的修改位置；Determining, by the location where the first carrier information and the second carrier information are different, a replacement location of the steganography;
在所述第一载体信息的所述修改位置，获取所述隐秘信息。And acquiring the secret information at the modified location of the first carrier information.
作为一种可选的实施方式，所述对所述第一载体信息进行处理，获得原始载体信息包括：As an optional implementation manner, the processing the first carrier information to obtain the original carrier information includes:
对所述第一载体信息进行解调以及纠错编码处理，获得原始载体信息。The first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
作为一种可选的实施方式，所述比较所述第一载体信息与所述第二载体信息是否存在差别包括：As an optional implementation manner, the comparing whether the first carrier information and the second carrier information are different include:
比较所述第一载体信息的波形与所述第二载体信息的波形是否存在差别；或Comparing whether there is a difference between a waveform of the first carrier information and a waveform of the second carrier information; or
比较所述第一载体信息的比特序列与所述第二载体信息的比特序列是否存在差别。Comparing whether there is a difference between the bit sequence of the first carrier information and the bit sequence of the second carrier information.
在图5所描述的接收设备中，接收设备可以接收替换隐写后的第一载体信息；对所述第一载体信息进行处理，获得原始载体信息；将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；比较所述第一载体信息与 所述第二载体信息是否存在差别；若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。可见，实施本发明实施例，接收设备可以还原出原始载体信息，进一步将替换隐写后的第一载体信息与替换隐写前的第二载体信息进行比较，若存在不同，则可以检测出信息被替换的位置，从而可以确定存在隐秘信息。In the receiving device described in FIG. 5, the receiving device may receive the first bearer information after the replacement of the steganography; process the first carrier information to obtain the original bearer information; and process the original bearer information to obtain a replacement. Second carrier information before steganography; comparing the first carrier information with Whether there is a difference in the second carrier information; if there is a difference between the first carrier information and the second carrier information, it is determined that the secret information exists. It can be seen that, in the embodiment of the present invention, the receiving device can restore the original carrier information, and further compare the second bearer information after replacing the steganography with the second carrier information before the steganography replacement. If there is a difference, the information can be detected. The location being replaced so that it can be determined that there is hidden information.
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.
在本申请所提供的几个实施例中，应该理解到，所揭露的装置，可通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性或其它的形式。In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储器中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储器中，包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前 述的存储器包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a memory. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. And before The memory includes: U disk, read-only memory (ROM), random access memory (RAM), random access memory (RAM), mobile hard disk, disk or optical disk, and other media that can store program code.
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储器中，存储器可以包括：闪存盘、只读存储器(英文：Read-Only Memory，简称：ROM)、随机存取器(英文：Random Access Memory，简称：RAM)、磁盘或光盘等。A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable memory, and the memory can include: a flash drive , read-only memory (English: Read-Only Memory, referred to as: ROM), random accessor (English: Random Access Memory, referred to as: RAM), disk or CD.
以上对本发明实施例公开的一种基于幅度差的信息检测方法、装置及接收设备进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。 The method, device and receiving device for detecting information based on the amplitude difference disclosed in the embodiment of the present invention are described in detail. The principle and the embodiment of the present invention are described in the following, and the description of the above embodiment is only The method for understanding the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in specific embodiments and application scopes. The description should not be construed as limiting the invention.

Claims (10)

  1. 一种基于幅度差的信息检测方法，其特征在于，包括：An information detection method based on amplitude difference, comprising:
    接收替换隐写后的第一载体信息；Receiving replacement of the first carrier information after steganography;
    对所述第一载体信息进行处理，获得原始载体信息；Processing the first carrier information to obtain original carrier information;
    将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；Processing the original carrier information to obtain second carrier information before replacing the steganography;
    比较所述第一载体信息与所述第二载体信息是否存在差别；Comparing whether the first carrier information and the second carrier information are different;
    若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。If there is a difference between the first carrier information and the second carrier information, it is determined that the secret information exists.
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：The method of claim 1 further comprising:
    将所述第一载体信息与所述第二载体信息存在差别的位置确定为替换隐写的修改位置；Determining, by the location where the first carrier information and the second carrier information are different, a replacement location of the steganography;
    在所述第一载体信息的所述修改位置，获取所述隐秘信息。And acquiring the secret information at the modified location of the first carrier information.
  3. 根据权利要求1或2所述的方法，其特征在于，对所述第一载体信息进行处理，获得原始载体信息包括：The method according to claim 1 or 2, wherein processing the first carrier information to obtain the original carrier information comprises:
    对所述第一载体信息进行解调以及纠错编码处理，获得原始载体信息。The first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
  4. 根据权利要求1或2所述的方法，其特征在于，所述比较所述第一载体信息与所述第二载体信息是否存在差别包括：The method according to claim 1 or 2, wherein the comparing whether the first carrier information and the second carrier information are different comprises:
    比较所述第一载体信息的波形与所述第二载体信息的波形是否存在差别；或Comparing whether there is a difference between a waveform of the first carrier information and a waveform of the second carrier information; or
    比较所述第一载体信息的比特序列与所述第二载体信息的比特序列是否存在差别。Comparing whether there is a difference between the bit sequence of the first carrier information and the bit sequence of the second carrier information.
  5. 一种信息检测装置，其特征在于，包括：An information detecting apparatus, comprising:
    接收单元，用于接收替换隐写后的第一载体信息；a receiving unit, configured to receive the first bearer information after replacing the steganography;
    第一获取单元，用于对所述第一载体信息进行处理，获得原始载体信息； a first acquiring unit, configured to process the first carrier information to obtain original carrier information;
    第二获取单元，用于将所述原始载体信息进行处理，获得替换隐写前的第二载体信息；a second acquiring unit, configured to process the original carrier information to obtain second carrier information before replacing the steganography;
    比较单元，用于比较所述第一载体信息与所述第二载体信息是否存在差别；a comparing unit, configured to compare whether the first carrier information and the second carrier information are different;
    确定单元，用于若所述第一载体信息与所述第二载体信息存在差别，则确定存在隐秘信息。And a determining unit, configured to determine that the secret information exists if the first carrier information and the second carrier information are different.
  6. 根据权利要求5所述的信息检测装置，其特征在于，The information detecting apparatus according to claim 5, wherein
    所述确定单元，还用于将所述第一载体信息与所述第二载体信息存在差别的位置确定为替换隐写的修改位置；The determining unit is further configured to determine a location where the first carrier information and the second carrier information are different as a modified location of replacing the steganography;
    所述第二获取单元，还用于在所述第一载体信息的所述修改位置，获取所述隐秘信息。The second obtaining unit is further configured to acquire the secret information at the modified location of the first carrier information.
  7. 根据权利要求4或5所述的信息检测装置，其特征在于，所述第一获取单元对所述第一载体信息进行处理，获得原始载体信息包括：The information detecting apparatus according to claim 4 or 5, wherein the first obtaining unit processes the first carrier information, and obtaining the original carrier information comprises:
    对所述第一载体信息进行解调以及纠错编码处理，获得原始载体信息。The first carrier information is demodulated and error-corrected and encoded to obtain original carrier information.
  8. 根据权利要求4或5所述的信息检测装置，其特征在于，所述比较单元比较所述第一载体信息与所述第二载体信息是否存在差别包括：The information detecting apparatus according to claim 4 or 5, wherein the comparing unit compares whether the first carrier information and the second carrier information have differences:
    比较所述第一载体信息的波形与所述第二载体信息的波形是否存在差别；或Comparing whether there is a difference between a waveform of the first carrier information and a waveform of the second carrier information; or
    比较所述第一载体信息的比特序列与所述第二载体信息的比特序列是否存在差别。Comparing whether there is a difference between the bit sequence of the first carrier information and the bit sequence of the second carrier information.
  9. 一种接收设备，其特征在于，所述接收设备包括处理器和存储器，所述处理器执行所述存储器存储的计算机程序以实现如权利要求1至4任一项所述的基于幅度差的信息检测方法。 A receiving device, comprising: a processor and a memory, the processor executing the computer program stored in the memory to implement the amplitude difference based information according to any one of claims 1 to Detection method.
  10. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有至少一个指令，所述至少一个指令被处理器执行时实现如权利要求1至4任一项所述的基于幅度差的信息检测方法。 A computer readable storage medium, characterized in that the computer readable storage medium stores at least one instruction, the at least one instruction being executed by a processor to implement the amplitude-based according to any one of claims 1 to Poor information detection method.
PCT/CN2017/111215 2017-11-15 2017-11-15 Information detection method and apparatus based on amplitude difference, and receiving device WO2019095174A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101504760A (en) * 2009-02-27 2009-08-12 上海师范大学 Digital image concealed information detecting and positioning method
US20130208941A1 (en) * 2012-02-01 2013-08-15 Qingzhong Liu Steganalysis with neighboring joint density
CN105959104A (en) * 2016-04-25 2016-09-21 深圳大学 Steganalysis method based on Hamming distance distribution

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101504760A (en) * 2009-02-27 2009-08-12 上海师范大学 Digital image concealed information detecting and positioning method
US20130208941A1 (en) * 2012-02-01 2013-08-15 Qingzhong Liu Steganalysis with neighboring joint density
CN105959104A (en) * 2016-04-25 2016-09-21 深圳大学 Steganalysis method based on Hamming distance distribution

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