Information security transmission method based on quantum audio steganography

Abstract

The invention discloses an information security transmission method based on quantum audio steganography in the technical field of communication security, which is applied to a transmitting end and a receiving end which communicate with each other, and comprises the following steps: acquiring audio data, and processing the audio data by adopting a QRDA model to obtain quantum audio data; after the sending end receives secret information, the secret information is encrypted through a secret key and embedded into the quantum audio data in a steganography mode, and transmission data is generated and sent to the receiving end; and after the receiving end receives the transmission data, carrying out steganography extraction and decryption on the transmission data to obtain the secret information. A QRDA model is adopted to convert secret information into a quantum state suitable for steganography. The traffic information is embedded in the quantum audio by using the EMD algorithm, and then encryption and decryption are performed by using the randomly generated key, so that the security and efficiency of transmission are improved by using quantum advantages on the premise of ensuring stable transmission of the traffic information.

Description

Technical Field

[0001] The present invention relates to the field of communication security technology, and in particular to an information security transmission method based on quantum audio steganography. Background Art

[0002] With the development of the Internet of Things and intelligent transportation systems, the communication between vehicles and transportation infrastructure has become increasingly frequent and important. The secure transmission of traffic information is essential to ensure the efficient operation of the transportation system, prevent traffic congestion, and ensure driving safety. However, the traditional way of transmitting traffic information has certain limitations in terms of security. Existing encryption technologies may not meet the growing security needs and are vulnerable to threats such as hacker attacks, information theft, and tampering. In addition, the transmission of traffic information often needs to be carried out under limited bandwidth and real-time requirements, which poses higher challenges to the efficiency and reliability of information transmission.

[0003] Quantum audio steganography is an important branch of the field of information hiding. In audio steganography, traditional methods mainly hide secret information by making slight modifications or additions to audio signals. However, these methods still have room for improvement in security and efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for secure information transmission based on quantum audio steganography, which utilizes quantum advantages to improve the security and efficiency of information transmission while ensuring stable information transmission.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions: The present invention provides a method for secure information transmission based on quantum audio steganography, which is applied to a transmitting end and a receiving end communicating with each other, comprising: Acquire audio data, and process the audio data using a QRDA model to obtain quantum audio data; After receiving the secret information, the sending end encrypts the secret information with a key and steganographically embeds it into the quantum audio data, generates transmission data and sends it to the receiving end; After the receiving end receives the transmission data, the transmission data is steganographically extracted and decrypted to obtain the secret information.

[0006] Optionally, the processing the audio data using a QRDA model to obtain quantum audio data includes: The amplitude of the audio data at each time point is sampled, and the amplitude is quantized to obtain a quantized value : ; ; In the formula, is the number of time points of the audio data, For the The amplitude at a time point, is the tensor product, is the number of quantum bits storing time information; ; In the formula, is the number of quantum bits storing amplitude information, Indicates The amplitude at the time point corresponds to the The quantum bit of a quantum bit has a value of 0 or 1. ; ; In the formula, for In the binary representation of The value of the bit; because ,exist There are redundant time points, and the redundant time points have no corresponding amplitudes. The quantum state of their amplitudes is set to , get the redundant quantization value : ; Quantize the value As a valid bit, the quantized value As redundant bits, constructing quantum audio data : .

[0007] Optionally, encrypting the secret information by a key and steganographically embedding the secret information into the quantum audio data comprises: Setting the key and key The key Include Key and key , the key The key is shared by the sender and the receiver before communication begins. The key is stored at the sending end before the communication starts and is sent to the receiving end during the communication process. The sequence seed Seed is generated by a pseudo-random sequence generator, and the sequence seed Seed is shared by the sender and the receiver before the communication starts; According to the number of bits that can be embedded in the quantum audio data in each communication, the secret information is divided into multiple groups of sub-information, denoted as , is the number of groups; the key and the key The secret information is divided into multiple groups of subkeys according to the number of groups, which are respectively recorded as , ; In the first communication, the sender uses the key Pair Information Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganographic embedding of the effective bits of the quantum audio data; the sending end uses the subkey Subkey Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganographically embedding redundant bits of the quantum audio data; In the During this communication, , the sender uses the subkey Before Bit-padded subkey , using the padded subkey Pair Information Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganographic embedding of the effective bits of the quantum audio data; the sending end uses the subkey Pair of subkeys Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganography embeds redundant bits of the quantum audio data.

[0008] Optionally, the secret information is Base and length , which is converted into a length of The binary bit sequence is: ; Based on length Calculate the number of bits that can be embedded in the quantum audio data for each communication : ; In the formula, is an integer variable, .

[0009] Optionally, the EMD The algorithm will contain confidential information The effective bits of the quantum audio data embedded in the steganographic method include: The effective bits of the quantum audio data are divided into multiple groups of sub-effective bits according to the number of groups divided by the secret information, which are respectively denoted as ; Define an extraction equation , the sub-bit is valid All After summing, convert to Base: ; In the formula, , is an integer variable, Sub-valid bit Middle Amplitude; The confidential information Convert to Get ; like , then keep the sub-valid bit The amplitude of remains unchanged; like , the difference is calculated and converted to Get : ; like , then let ;like , then let .

[0010] Optionally, in the first communication, after receiving the transmission data, the receiving end performs steganographic extraction on the transmission data to obtain the confidential information. and confidential information , using the key Confidential Information Decrypt to get sub-information , discard the key after decryption ; Use subkey Confidential Information Decrypt to get the subkey ; In the In the second communication, after receiving the transmission data, the receiving end performs steganalysis extraction on the transmission data to obtain the secret information. and confidential information , using the padded subkey Confidential Information Decrypt to get sub-information , discard the subkey after decryption ; Use subkey Confidential Information Decrypt to get the subkey .

[0011] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a method for secure information transmission based on quantum audio steganography. 1) The QRDA model is used to represent quantum audio, and two entangled quantum bit sequences are used to store audio amplitude and time information. This quantum characteristic may allow more information to be stored in a smaller space and achieve more efficient information processing. 2) The EMD algorithm is combined with quantum characteristics, and each sub-quantum embedding layer is used to embed information. The sub-quantum embedding layer shares a quantum coding scheme, which simplifies the coding process, reduces resource consumption, and the embedding effect remains unchanged, further enhancing the stability of the system. 3) The quantum characteristics are utilized to embed the information to be transmitted into the quantum audio in a hidden and secure manner. Through advanced coding and modulation technology, not only the integrity and accuracy of the information are ensured, but also the hidden capacity of the information is greatly improved, so that more key information can be embedded in a single quantum audio carrier. In summary, the present invention can improve the security and efficiency of transmission while ensuring the stable transmission of traffic information. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the processing process of the information security transmission method based on quantum audio steganography provided by an embodiment of the present invention; Figure 2 is a schematic diagram of the amplitude of quantum audio data provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of the processing process of the first communication provided by an embodiment of the present invention; Figure 4 is a schematic diagram of the processing process of the second communication provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of a processing process for steganographically embedding secret information into valid bits of quantum audio data provided by an embodiment of the present invention; Figure 6 It is an example schematic diagram of encrypting secret information with a key and steganographically embedding it into quantum audio data provided by an embodiment of the present invention; Figure 7 is a schematic diagram of test results of a MOS (Mean Opinion Score) test provided by an embodiment of the present invention; Figure 8It is a schematic diagram of test results of a signal-to-noise ratio (SNR) test provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0014] Embodiment 1:

[0015] like Figure 1 As shown, an embodiment of the present invention provides a method for secure information transmission based on quantum audio steganography, which is applied to a transmitting end and a receiving end communicating with each other, including: 1. Obtain audio data and process it using the QRDA model to obtain quantum audio data.

[0016] The QRDA model is the quantum representation model of Quantum Representation of Digital Audio.

[0017] The audio data is processed using the QRDA model, and the quantum audio data obtained includes: Sample the amplitude of the audio data at each time point and quantize the amplitude to obtain the quantized value : ; ; In the formula, is the number of time points of the audio data, For the The amplitude at a time point, is the tensor product, is the number of quantum bits storing time information; ; In the formula, is the number of quantum bits storing amplitude information, Indicates The amplitude at the time point corresponds to the The quantum bit of a quantum bit has a value of 0 or 1. ; ; In the formula, for In the binary representation of The value of the bit; because ,exist There are redundant time points, and the redundant time points have no corresponding amplitudes. The quantum state of their amplitudes is set to , get the redundant quantization value : ; Quantize the value As a valid bit, the quantized value As redundant bits, constructing quantum audio data : ; like Figure 2 The quantum audio data shown, the effective length , redundant length , expressed as:

[0018] 2. After receiving the secret information at the sending end, the secret information is encrypted with a key and steganographically embedded in the quantum audio data to generate transmission data and send it to the receiving end.

[0019] The secret information is encrypted and embedded into the quantum audio data by key including: Setting the key and key ; Key Include Key and key , key The key is shared by the sender and receiver before communication begins. The key is stored at the sending end before the communication starts and sent to the receiving end during the communication process. The sequence seed Seed is generated by a pseudo-random sequence generator. The sequence seed Seed is shared by the sender and the receiver before the communication starts. According to the number of bits that can be embedded in the quantum audio data in each communication, the secret information is divided into multiple groups of sub-information, denoted as , is the number of groups; the key and key The secret information is divided into multiple groups of subkeys, which are recorded as , ; Here we need to determine the number of bits that can be steganographically embedded in quantum audio data for each communication. We always hope that n can divide L. By rounding down, we avoid trying to embed too many or unrealistic bits, thereby ensuring that the audio data is used as reasonably as possible to embed secret information without exceeding the audio data carrying capacity and seriously affecting the audio quality.

[0020] Let the secret information be Base and length , which is converted into a length of The binary bit sequence is: ; Based on length Calculate the number of bits that can be embedded in quantum audio data per communication : ; In the formula, is an integer variable, .

[0021] like Figure 3 As shown, in the first communication, the sender uses the key Pair Information Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganography embeds the valid bits of quantum audio data; the sender uses the subkey Pair of subkeys Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganographically embed redundant bits of quantum audio data; like Figure 4 As shown, in the second communication, the sender uses the subkey Before Bit-padded subkey , using the padded subkey Pair Information Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganography embeds the valid bits of quantum audio data; the sender uses the subkey Pair of subkeys Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganography embeds redundant bits of quantum audio data.

[0022] Similarly, in During this communication, , the sender uses the subkey Before Bit-padded subkey , using the padded subkey Pair Information Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganography embeds the valid bits of quantum audio data; the sender uses the subkey Pair of subkeys Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganography embeds redundant bits of quantum audio data.

[0023] like Figure 5 As shown, specifically in this embodiment, by EMD The algorithm will contain confidential information The effective bits for steganographically embedding quantum audio data include: The effective bits of quantum audio data are divided into multiple groups of sub-effective bits according to the number of groups divided by secret information, which are recorded as ; Define an extraction equation , the sub-bit is valid All After summing, convert to Base: ; In the formula, , is an integer variable, Sub-valid bit Middle Amplitude; Confidential information Convert to Get ; like , then keep the sub-valid bit The amplitude of remains unchanged; like , the difference is calculated and converted to Get : ; like , then let ;like , then let .

[0024] pass EMD The algorithm will contain confidential information The principle of steganographically embedding redundant bits of quantum audio data is the same as above and will not be elaborated here. Figure 6 As shown, an example is given in which secret information is encrypted with a key and steganographically embedded into quantum audio data.

[0025] 3. After receiving the transmitted data at the receiving end, the transmitted data is steganographically extracted and decrypted to obtain the secret information.

[0026] In the first communication, after the receiving end receives the transmitted data, it performs steganographic extraction on the transmitted data to obtain the confidential information. and confidential information , using the key Confidential Information Decrypt to get sub-information , discard the key after decryption ; Use subkey Confidential Information Decrypt to get the subkey ; In the second communication, after the receiving end receives the transmitted data, it performs steganographic extraction on the transmitted data to obtain the confidential information. and confidential information , using the padded subkey Confidential Information Decrypt to get sub-information , discard the subkey after decryption ; Use subkey Confidential Information Decrypt to get the subkey .

[0027] Similarly, in In this communication, after the receiving end receives the transmitted data, it performs steganographic extraction on the transmitted data to obtain the confidential information. and confidential information , using the padded subkey Confidential Information Decrypt to get sub-information , discard the subkey after decryption ; Use subkey Confidential Information Decrypt to get the subkey .

[0028] Taking the application of the information security transmission method based on quantum audio steganography provided in this embodiment in the field of transportation as an example, the operation of the steganography protocol is simulated using the Matlab R2016a environment. Two 30-second audio segments were intercepted as audio data, HotelCalifornia.wav and LoveTide.wav. The audio formats are both in wav format. There are 44 bytes of file format description from the file header to the data. Therefore, when hiding information, these 44 bits should be skipped and the operation should start from the 45th bit. In addition, we also prepared three images to be inserted as secret information, Woman.tiff, Word.tiff, and Nuist.tiff, all of which are stored in tiff format. Since our steganography algorithm operates on binary bit sequences, we first convert the images into binary images for storage before the experiment begins.

[0029] Embed the image Woman.tiff in HotelCalifornia.wav through the EMD method to get the processed audio music_new_secret.wav. Open it with a player outside Matlab and listen to the secret audio. Use the MOS (Mean Opinion Score) test to investigate and quantify the user's listening and perception of voice quality. Different survey users compare their subjective feelings about the original standard voice and the attenuated sound after wireless network transmission, and evaluate the MOS score. Figure 7 The higher the score, the smoother and clearer the audio quality. It is found that the human ear cannot distinguish the changes before and after processing, and the subjective judgment MOS value can reach the excellent level.

[0030] The signal-to-noise ratio (SNR) is used to evaluate the quality of audio. The signal refers to the electronic signal from outside the device that needs to be processed by this device, and the noise refers to the irregular additional signal that does not exist in the original signal after passing through the device.

[0031] The signal-to-noise ratio (SNR) is used to evaluate the quality of audio. The signal refers to the electronic signal from outside the device that needs to be processed by this device, and the noise refers to the irregular additional signal that does not exist in the original signal after passing through the device.

[0032] ; in, and Represents the effective power of signal and noise respectively. The squares of the sampled signal points are summed and then averaged to obtain The calculation method of effective power of noise is similar to that of effective power of signal, which is to sum and average the squares of noise sample points. The larger the SNR value, the higher the audio quality. Calculate the SNR value of each group and get Figure 7 , and also gives the SNR value when the embedding mode is LSB embedding. It can be seen that the SNR value is significantly improved after using EMD embedding. At the same time, since at most one modification is made between every two amplitudes during EMD embedding, the concealment of the method used in the present invention is also better.

[0033] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0034] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0035] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0036] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for secure information transmission based on quantum audio steganography, applied to a transmitting end and a receiving end communicating with each other, characterized in that: include: Acquire audio data, and process the audio data using a QRDA model to obtain quantum audio data; After receiving the secret information, the sending end encrypts the secret information with a key and steganographically embeds it into the quantum audio data, generates transmission data and sends it to the receiving end; After the receiving end receives the transmission data, the transmission data is steganographically extracted and decrypted to obtain the secret information.

2. The information security transmission method based on quantum audio steganography according to claim 1 is characterized in that: The audio data is processed using the QRDA model to obtain quantum audio data, including: The amplitude of the audio data at each time point is sampled, and the amplitude is quantized to obtain a quantized value : ； ； In the formula, is the number of time points of the audio data, For the The amplitude at a time point, is the tensor product, is the number of quantum bits storing time information; ； In the formula, is the number of quantum bits storing amplitude information, Indicates The amplitude at the time point corresponds to the The quantum bit of a quantum bit has a value of 0 or 1. ; ； In the formula, for In the binary representation of The value of the bit; because ,exist There are redundant time points, and the redundant time points have no corresponding amplitudes. The quantum state of their amplitudes is set to , get the redundant quantization value : ； Quantize the value As a valid bit, the quantized value As redundant bits, constructing quantum audio data : 。 3. The information security transmission method based on quantum audio steganography according to claim 2 is characterized in that: The step of encrypting the secret information by a key and steganographically embedding the secret information into the quantum audio data comprises: Setting the key and key The key Include Key and key , the key The key is shared by the sender and the receiver before communication begins. The key is stored at the sending end before the communication starts and sent to the receiving end during the communication process; The sequence seed Seed is generated by a pseudo-random sequence generator, and the sequence seed Seed is shared by the sender and the receiver before the communication starts; According to the number of bits that can be embedded in the quantum audio data in each communication, the secret information is divided into multiple groups of sub-information, denoted as , is the number of groups; the key and the key The secret information is divided into multiple groups of subkeys according to the number of groups, which are respectively recorded as , ; In the first communication, the sender uses the key Pair Information Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganographic embedding of the effective bits of the quantum audio data; the sending end uses the subkey Pair of subkeys Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganographically embedding redundant bits of the quantum audio data; In the During this communication, , the sender uses the subkey Before Bit-padded subkey , using the padded subkey Pair Information Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganographic embedding of the effective bits of the quantum audio data; the sending end uses the subkey Pair of subkeys Encrypt to obtain confidential information ,pass EMD The algorithm will contain confidential information Steganography embeds redundant bits of the quantum audio data.

4. The information security transmission method based on quantum audio steganography according to claim 3 is characterized in that The secret information is Base and length , which is converted into a length of The binary bit sequence is: ； Based on length Calculate the number of bits that can be embedded in the quantum audio data for each communication : ； In the formula, is an integer variable, .

5. The information security transmission method based on quantum audio steganography according to claim 3 is characterized in that: Said through EMD The algorithm will contain confidential information The effective bits of the steganographically embedded quantum audio data include: The effective bits of the quantum audio data are divided into multiple groups of sub-effective bits according to the number of groups divided by the secret information, which are respectively denoted as ; Define an extraction equation , the sub-bit is valid All After summing, convert to Base: ； In the formula, , is an integer variable, Sub-valid bit Middle Amplitude; The confidential information Convert to Get ; like , then keep the sub-valid bit The amplitude of remains unchanged; like , the difference is calculated and converted to Get : ； like , then let ;like , then let .

6. The information security transmission method based on quantum audio steganography according to claim 3 is characterized in that: In the first communication, after receiving the transmission data, the receiving end performs steganalysis extraction on the transmission data to obtain the secret information. and confidential information , using the key Confidential Information Decrypt to get sub-information , discard the key after decryption ; Use subkey Confidential Information Decrypt to get the subkey ; In the In the second communication, after receiving the transmission data, the receiving end performs steganalysis extraction on the transmission data to obtain the secret information. and confidential information , using the padded subkey Confidential Information Decrypt to get sub-information , discard the subkey after decryption ; Use subkey Confidential Information Decrypt to get the subkey .

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