Cloud edge collaborative encryption transmission method and system suitable for new energy station

Abstract

The invention discloses a cloud edge collaborative encryption transmission method and system suitable for a new energy station, and the method comprises the steps: inputting continuous wave laser into a first processing unit for phase modulation, generating a phase chaotic carrier, amplifying the intensity of a light field, and inputting a light signal into a phase modulator, thereby achieving chaotic encryption; amplitude-phase chaos is multiplexed through a polarization multiplexing technology, and phase decryption is realized through a reverse differential feedback loop after demultiplexing of a receiving end; a polarization controller is used for converting a chaotic signal into a polarization state, and phase deviation is introduced through an optical fiber delay line, so that demodulation of an optical signal is realized. The amplitude-phase two-dimensional chaos model based on electro-optic phase feedback chaos is provided, time-delay-hidden, ultra-wideband and high-complexity chaos signal generation is achieved in combination with wavelength division multiplexing, transmission between data of multiple photovoltaic stations and a cloud platform can be encrypted at the same time, and the method is transparent in signal modulation format and easy to implement. And high-speed signal encryption and decryption in a high-order modulation format can be supported.

Description

Technical Field

[0001] The present invention relates to the field of encrypted transmission technology, and in particular to a cloud-edge collaborative encrypted transmission method and system suitable for new energy stations. Background Art

[0002] At a critical time of energy structure transformation, renewable energy, especially solar energy, is gradually becoming an important part of global energy supply. Distributed photovoltaic power stations, as one of the important forms of solar energy utilization, have been widely used in remote areas due to their high flexibility and low environmental impact. However, photovoltaic power stations in these areas are usually unattended, so how to achieve remote monitoring and management through efficient and secure technical means has become an urgent problem to be solved. Cloud computing technology, with its powerful data processing capabilities and flexible service model, has become an ideal choice for remote management of distributed photovoltaic power stations. However, with the increase in the number of photovoltaic power stations and the growth of data volume of a single power station, it is particularly important to ensure the security and privacy of this data during transmission from the site to the cloud.

[0003] Traditional data encryption methods are mainly based on classical cryptography, including symmetric encryption and asymmetric encryption. Symmetric encryption algorithms dominate practical applications because of their high speed and efficiency. Asymmetric encryption is widely used in the field of network communication security because it can solve the key distribution problem. However, with the development of quantum computing technology and the significant improvement of computer computing power, traditional encryption algorithms are facing unprecedented challenges. The powerful computing power of quantum computers may crack the existing encryption system in the future, thereby threatening the security of data. Therefore, it is particularly urgent to explore new encryption technologies to meet this challenge.

[0004] As an emerging data protection method, chaotic encryption technology has received widespread attention in recent years. Chaotic systems have high initial value sensitivity, unpredictability, and random noise-like characteristics, which enables it to provide an encryption mechanism that does not rely on algorithm complexity. Compared with traditional encryption methods, chaotic encryption can not only effectively resist attacks, but also to a certain extent resist future quantum computing attacks. Especially in the field of optical chaotic encryption technology, due to its high frequency and broadband characteristics, it is very suitable for encryption protection of high-speed data streams. For distributed photovoltaic power stations, the use of chaotic optical encryption technology can realize independent encryption of each bit of data (i.e., "one word, one secret"), which greatly improves the security of data transmission. Summary of the invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] Therefore, the present invention provides a cloud-edge collaborative encryption transmission method and system suitable for new energy stations, aiming to solve the problems of low complexity, limited bandwidth and insufficient security of multi-channel signal transmission of traditional chaotic light sources in secure communication between distributed photovoltaic stations and cloud platforms. By proposing a new differential feedback structure and wavelength division multiplexing technology, the generation of high-complexity, broadband chaotic signals and the secure transmission of multi-channel high-speed signals are realized.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] In the first aspect, the present invention provides a cloud-edge collaborative encrypted transmission method suitable for new energy stations, including: inputting a continuous wave laser into a first processing unit for phase modulation to generate a phase chaotic carrier, and inputting the optical signal into a phase modulator after amplifying the light field intensity to realize chaotic encryption; multiplexing the amplitude and phase chaos through polarization multiplexing technology, and realizing phase decryption through a reverse differential feedback loop after demultiplexing at the receiving end; using a polarization controller to convert the chaotic signal into a polarization state, and introducing a phase offset through an optical fiber delay line to realize demodulation of the optical signal.

[0009] As a preferred solution of the cloud-edge collaborative encrypted transmission method applicable to new energy stations described in the present invention, wherein: the continuous wave laser is input into the first processing unit for phase modulation to generate a phase chaotic carrier, including:

[0010] Injecting a continuous wave laser into a phase modulator, converting the phase noise of the continuous wave laser into amplitude noise using a Mach-Zehnder interferometer, and converting the optical signal into an electrical signal through a photodetector;

[0011] The differentiator amplifies the change process of the weak noise and inputs it into the radio frequency amplifier, uses the radio frequency amplifier to control the size of the output electrical signal, and feeds the output electrical signal back to the phase modulator;

[0012] After multiple nonlinear cycles, the continuous wave laser input into the phase modulator undergoes period doubling and finally enters a chaotic state, outputting a phase chaotic carrier.

[0013] As a preferred solution of the cloud-edge collaborative encrypted transmission method applicable to new energy stations described in the present invention, the output phase chaotic carrier is input into an intensity modulator to generate an enhanced chaotic carrier.

[0014] As a preferred solution of the cloud-edge collaborative encryption transmission method applicable to new energy stations described in the present invention, the implementation of chaotic encryption includes:

[0015] amplifying the light field intensity through an erbium-doped fiber amplifier and injecting the light signal into the phase modulator;

[0016] The intensity and phase of the chaos outputted by the uplink are both in a chaotic state, and the plaintext signal is encrypted by the phase modulator of the uplink.

[0017] As a preferred solution of the cloud-edge collaborative encrypted transmission method applicable to new energy stations described in the present invention, the multiplexing of amplitude-phase chaos by polarization multiplexing technology includes:

[0018] The enhanced chaotic carrier outputted by the erbium-doped fiber amplifier of the drop channel is converted into the y polarization state through the polarization controller, and is multiplexed with the amplitude and phase chaos of the x polarization state of the drop channel through the polarization combiner.

[0019] As a preferred solution of the cloud-edge collaborative encryption transmission method applicable to new energy stations described in the present invention, wherein: the receiving end realizes phase decryption through a reverse differential feedback loop after demultiplexing, including:

[0020] At the receiving end, a polarization demultiplexer is used to realize demultiplexing of double-bias chaos;

[0021] The incoming x-polarized light eliminates phase chaos through a reverse differential feedback loop to achieve phase decryption.

[0022] As a preferred solution of the cloud-edge collaborative encrypted transmission method applicable to new energy stations described in the present invention, the demodulation of the optical signal includes:

[0023] The polarization controller is used to convert the y-polarization chaos into the x-polarization chaos, and a 180-degree phase shift is introduced through the optical fiber delay line to eliminate the intensity chaos, restore the signal amplitude, and realize the demodulation of the optical signal.

[0024] In a second aspect, the present invention provides a cloud-edge collaborative encrypted transmission system applicable to new energy stations, comprising:

[0025] A chaos encryption module is used to input a continuous wave laser into the first processing unit for phase modulation to generate a phase chaos carrier, and then input the optical signal into the phase modulator after amplifying the light field intensity to achieve chaos encryption;

[0026] The phase decryption module is used to multiplex the amplitude and phase chaos through polarization multiplexing technology, and realize phase decryption through a reverse differential feedback loop after demultiplexing at the receiving end;

[0027] The signal demodulation module is used to convert the polarization state of the chaotic signal using the polarization controller and introduce phase shift through the optical fiber delay line to realize the demodulation of the optical signal.

[0028] In a third aspect, the present invention provides an electronic device, comprising:

[0029] Memory and processor;

[0030] The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the cloud-edge collaborative encryption transmission method applicable to new energy stations are implemented.

[0031] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the cloud-edge collaborative encrypted transmission method applicable to new energy stations.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a cloud-edge collaborative encrypted transmission method and system suitable for new energy stations. By proposing an amplitude-phase two-dimensional chaos model based on electro-optical phase feedback chaos, combined with wavelength division multiplexing to achieve delay hiding, ultra-wideband, and high-complexity chaotic signal generation, the data of multiple photovoltaic stations can be simultaneously encrypted for transmission between the cloud platform, and the method provided by the present invention is transparent to the signal modulation format, and can support high-speed signal encryption and decryption of high-order modulation formats; in addition, the present invention uses polarization multiplexing to realize signal encryption and decryption, has good robustness to transmission noise, and can realize plug-and-play secure communication of multi-channel photovoltaic signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of the overall process logic of the cloud-edge collaborative encryption transmission method applicable to new energy stations according to an embodiment of the present invention;

[0035] Figure 2 A structural diagram of a chaos generation and communication system of a cloud-edge collaborative encryption transmission method applicable to a new energy station according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the simulation results of the cloud-edge collaborative encryption transmission method suitable for new energy stations described in an embodiment of the present invention, wherein (a1)-(a2) are time domain diagrams and spectrum diagrams of chaotic light output by the phase modulator, (b1)-(b2) are schematic diagrams of protective grounding PE and signal grounding SE, (c1)-(c2) are schematic diagrams of ACF and DMI, (d1)-d2) are cross-correlation function diagrams of chaos at transceiver ends at different OSNRs and cross-correlation function diagrams when the MZI delay is mismatched, and (e1)-(e2) are spectrum diagrams and constellation diagrams of transmitting end signals, encrypted and decrypted signals. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0038] Example 1

[0039] Reference Figure 1-Figure 2 As an embodiment of the present invention, a cloud-edge collaborative encryption transmission method suitable for new energy stations is provided to solve the problems of low complexity, limited bandwidth and insufficient security of multi-channel signal transmission of traditional chaotic light sources in secure communication between distributed photovoltaic stations and cloud platforms. By proposing a new differential feedback structure and wavelength division multiplexing technology, the generation of high-complexity, broadband chaotic signals and the secure transmission of multi-channel high-speed signals are realized. Figure 1 The specific steps shown include:

[0040] S100: inputting a continuous wave laser into a first processing unit for phase modulation to generate a phase chaotic carrier, and inputting the optical signal into a phase modulator after amplifying the light field intensity to achieve chaotic encryption;

[0041] S200: Multiplex amplitude and phase chaos through polarization multiplexing technology, and realize phase decryption through reverse differential feedback loop after demultiplexing at the receiving end;

[0042] S300: The polarization state of the chaotic signal is converted by using a polarization controller, and a phase shift is introduced through an optical fiber delay line to achieve demodulation of the optical signal.

[0043] It should be noted that the present invention provides a cloud-edge collaborative encrypted transmission method and system suitable for new energy stations. By proposing an amplitude-phase two-dimensional chaos model based on electro-optical phase feedback chaos and combining wavelength division multiplexing to achieve delay hiding, ultra-wideband, and high-complexity chaotic signal generation, the data of multiple photovoltaic stations can be simultaneously encrypted for transmission between the cloud platform. The method provided by the present invention is transparent to the signal modulation format and can support high-speed signal encryption and decryption of high-order modulation formats. In addition, the present invention uses polarization multiplexing to realize signal encryption and decryption, has good robustness to transmission noise, and can realize plug-and-play secure communication of multi-channel photovoltaic signals.

[0044] In the embodiment of the present application, the above step S100 includes the following sub-steps A1-A3;

[0045] In A1: inputting a continuous wave laser into a first processing unit for phase modulation to generate a phase chaotic carrier;

[0046] In A2: the output phase chaotic carrier is input into the intensity modulator to generate an enhanced chaotic carrier;

[0047] In A3: after amplifying the light field intensity, the optical signal is input into the phase modulator to achieve chaotic encryption;

[0048] Specifically, inputting a continuous wave laser into a first processing unit for phase modulation to generate a phase chaotic carrier includes:

[0049] The continuous wave laser is injected into the phase modulator, the phase noise of the continuous wave laser is converted into amplitude noise using the Mach-Zehnder interferometer, and the optical signal is converted into an electrical signal through the photodetector;

[0050] The differentiator amplifies the change process of the weak noise and inputs it into the RF amplifier, which controls the size of the output electrical signal and feeds the output electrical signal back to the phase modulator.

[0051] After multiple nonlinear cycles, the continuous wave laser input to the phase modulator undergoes period doubling and finally enters a chaotic state, outputting a phase chaotic carrier.

[0052] In a feasible implementation, the first processing unit is composed of a phase modulator (PM), a Mach-Zehnder interferometer (MZI), a photoelectric detector (PD), a differentiator, and a radio-requency amplifier (RF). Figure 2 As shown in the figure, a continuous wave (CW) laser is injected into a phase modulator (PM), and the phase noise of the laser is converted into amplitude noise using a Mach-Zehnder interferometer (MZI). The optical signal is converted into an electrical signal through a photoelectric detector (PD). The change process of the weak noise is amplified using a differentiator, and the size of the output electrical signal is controlled by a radio-requency amplifier (RF), and then the electrical signal is fed back to the PM. After multiple nonlinear cycles, the continuous wave after the PM undergoes period doubling and finally enters a chaotic state, outputting phase chaotic light.

[0053] Specifically, the implementation of chaotic encryption includes:

[0054] The optical field intensity is amplified by an erbium-doped optical fiber amplifier (EDFA) and the optical signal is injected into the phase modulator;

[0055] The intensity and phase of the chaos output by the uplink are both in a chaotic state, and the plaintext signal is encrypted by the uplink phase modulator.

[0056] It should be noted that the above step S100 realizes chaotic encryption by inputting a continuous wave laser into the first processing unit for phase modulation to generate a phase chaotic carrier, and amplifying the light field intensity before inputting the optical signal into the phase modulator again. It can not only generate a highly random and unpredictable phase chaotic carrier, significantly improve the signal security and anti-interference ability, but also ensure the transmission distance and stability of the signal by amplifying the light field intensity, so that the entire communication system has stronger transmission performance and reliability while ensuring information security.

[0057] In the embodiment of the present application, the above step S200 includes the following sub-steps B1-B2;

[0058] In B1: multiplexing the amplitude and phase chaos through polarization multiplexing technology;

[0059] In B2: after demultiplexing at the receiving end, phase decryption is achieved through a reverse differential feedback loop;

[0060] Specifically, the amplitude and phase chaos are multiplexed by polarization multiplexing technology, including: the enhanced chaotic carrier outputted by the erbium-doped fiber amplifier of the downlink is changed into the y polarization state by a polarization controller (PC), and is multiplexed with the amplitude and phase chaos of the x polarization state of the uplink by a polarization beam combiner (PBC);

[0061] Specifically, after demultiplexing at the receiving end, phase decryption is achieved through a reverse differential feedback loop, including: using a polarization beam splitter (PBS) at the receiving end to achieve double-bias chaos demultiplexing; and eliminating phase chaos of the incoming x-polarized light through a reverse differential feedback loop to achieve phase decryption.

[0062] It should be noted that the above step S200 multiplexes the amplitude and phase chaos through polarization multiplexing technology, and realizes phase decryption through the reverse differential feedback loop after demultiplexing at the receiving end, which not only improves the transmission capacity and bandwidth utilization of the system, but also enhances the confidentiality and anti-interference ability of the signal. The polarization multiplexing technology can effectively utilize the different polarization states of the optical signal and increase the dimension of information transmission, while the reverse differential feedback loop can accurately restore the original signal to ensure the accuracy and reliability of decryption.

[0063] In the embodiment of the present application, the above step S300 includes:

[0064] The polarization controller is used to convert the y-polarization chaos into the x-polarization chaos, and a 180-degree phase shift is introduced through the optical fiber delay line to eliminate the intensity chaos, restore the signal amplitude, and realize the demodulation of the optical signal.

[0065] It should be noted that the above step S300 uses a polarization controller to convert the polarization state of the chaotic signal, and introduces a phase shift through an optical fiber delay line to realize the demodulation of the optical signal. It can not only flexibly control and adjust the polarization state of the signal to improve the adaptability and flexibility of the system, but also realize the effective demodulation of the chaotic signal through precise phase shift, ensuring that the demodulated signal has a high signal-to-noise ratio and good stability, thereby improving the performance and reliability of the entire communication system.

[0066] The above is a schematic scheme of a cloud-edge collaborative encryption transmission method applicable to new energy stations in this embodiment. It should be noted that the technical solution of the cloud-edge collaborative encryption transmission system applicable to new energy stations and the technical solution of the cloud-edge collaborative encryption transmission method applicable to new energy stations belong to the same concept. The details not described in detail in the technical solution of the cloud-edge collaborative encryption transmission system applicable to new energy stations in this embodiment can be found in the description of the technical solution of the cloud-edge collaborative encryption transmission method applicable to new energy stations.

[0067] This embodiment also provides a cloud-edge collaborative encryption transmission system suitable for new energy stations, including a chaotic encryption module, a phase decryption module, and a signal demodulation module;

[0068] Specifically, the chaotic encryption module is used to input the continuous wave laser into the first processing unit for phase modulation to generate a phase chaotic carrier, and after amplifying the light field intensity, input the optical signal into the phase modulator to achieve chaotic encryption;

[0069] Specifically, the phase decryption module is used to multiplex the amplitude and phase chaos through polarization multiplexing technology, and the receiving end realizes phase decryption through a reverse differential feedback loop after demultiplexing;

[0070] Specifically, the signal demodulation module is used to convert the polarization state of the chaotic signal by using the polarization controller, and introduce a phase shift through the optical fiber delay line to achieve demodulation of the optical signal.

[0071] The above-mentioned unit modules may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to the above-mentioned modules.

[0072] This embodiment also provides an electronic device, which includes a processor, a memory, a communication interface, a display screen and an input device connected by a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless method can be implemented through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a cloud-edge collaborative encryption transmission method suitable for a new energy station is implemented. The display screen of the computer device can be a liquid crystal display or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a button, trackball or touchpad set on the housing of the computer device, or an external keyboard, touchpad or mouse.

[0073] This embodiment also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method proposed in the above embodiment is implemented.

[0074] The storage medium proposed in this embodiment and the method proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0075] Through the above description of the implementation methods, the technicians in the relevant field can clearly understand that the present invention can be implemented by means of software and necessary general hardware, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ReadOnly, Memory, ROM), random access memory (RandomAccess Memory, RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform the methods of various embodiments of the present invention.

[0076] Example 2

[0077] Reference Figure 3 Based on the previous embodiment, this embodiment provides an application example of a cloud-edge collaborative encryption transmission method and system suitable for new energy stations, in order to verify and illustrate the technical effects adopted in this method.

[0078] In the new energy station, the distributed photovoltaic substation and the cloud platform are interacting with each other, and the data encryption process is simulated by MATLAB and VPIphotonics. The phase noise of the laser is reflected in the line width, which makes the chaos of the differential loop structure start to vibrate, but does not affect the characteristics of stable chaos. The line width of the laser is 1kHz, the laser output power is 1mW, and the chaos of the AM output is amplified to 10mW by the erbium-doped optical fiber amplifier (EDFA). The optical signal power is set to 1mw, the delay of the MZI is 0.4ns, the laser fiber is 100km, and the dispersion coefficient of half of the fiber is 16×10 -6 s / m 2 , the dispersion slope is 0.08×10 3 s / m 3 , and the other half has the opposite coefficient, with a fiber loss of 0.2×10 -3 The loss is compensated by EDFA at the receiver, and the modulated optical signal mQAM (m=2,4,6) is coupled with chaos to achieve hiding.

[0079] like Figure 3 The performance of the chaotic communication system is simulated as shown. First, the nonlinear dynamic characteristics and safety performance of the chaotic carrier are analyzed. Figure 3(a1) is the time domain power and phase dynamics of the chaotic light field at the PM output end, (a2) is the flat radio frequency (RF) spectrum after photoelectric detection, and the bandwidth is the blue part of 40GHz, which is defined as the frequency span containing 80% of the energy. The permutation entropy (PE) and spectral entropy (SE) quantitatively describe the complexity of chaos in the time domain and frequency domain in (b1) and (b2), respectively, by simulating the PE and SE of PM input electrical chaos, PM output optical chaos and Gaussian noise. It is found that the PE and SE of PM input are both above 0.9, which are lower than the PE and SE of PM output. The PE of PM output is around 0.996, and the SE is 0.95. The complexity of PM output chaos is equivalent to the noise level, so the system can achieve noise-like random chaos. (c1)-(c2) The ACF and DMI of the PM output light field are analyzed. The results show that the 0.4ns delay of MZI is not exposed, which can prove that ultra-flat wide chaos can be used as a carrier of chaotic secure communication;

[0080] Gaussian noise is introduced into the transmission link to analyze its effect on the signalless chaotic synchronization in (d1). The closer the cross-correlation (CC) number is to 1, the better the synchronization is. The optical signal-to-noise ratio (OSNR) is set to the ratio of the peak value of the chaotic peak to the noise. When the OSNR is 25dB, the CC reaches 0.9, and the inset shows that relatively good synchronization is achieved at this time. (d2) shows the effect of MZI delay mismatch on the synchronization performance. The results show that the system is extremely sensitive to the parameter mismatch of the delay.

[0081] Finally, the transmission of WDM signals in the chaotic system was simulated. The transmission frequency interval was 50 GHz, the baud rate was 25 GBd, and the transmission rate could reach 300 Gbit / s for QPSK, 16QAM, and 64QAM. (e1) is the black spectrum and constellation diagram of the optical signal, the blue line is the spectrum of the completely shielded signal, and (e2) is the spectrum of the received signal. The corresponding constellation diagram can be obtained after separate filtering. At this time, the bit error rate (BER) of QPSK and 16QAM is 0, and the bit error rate (BER) of 64QAM is 6×10 -4 , which are all lower than the forward error correction threshold of 3.8×10 -3 .

[0082] From the above simulation, it can be seen that this embodiment proposes a new differential feedback chaos generation method, which can generate high-complexity, broadband, and ultra-flat chaos, and realize the encryption and decryption of multi-channel signals by using electro-optical feedback differential structure and polarization multiplexing. This method generates high-performance chaos with a radio frequency spectrum bandwidth of 40GHz, PE=0.996, and SE=0.95, realizes the confidential communication of transparent modulation format signals and plug-and-play of multi-channel WDM signals, and realizes 300Gbit / s confidential communication through WDM.

[0083] Therefore, the present invention provides a cloud-edge collaborative encrypted transmission method and system suitable for new energy stations. By proposing an amplitude-phase two-dimensional chaos model based on electro-optical phase feedback chaos, combined with wavelength division multiplexing to achieve delay hiding, ultra-wideband, and high-complexity chaotic signal generation, the data of multiple photovoltaic stations can be simultaneously encrypted for transmission between the cloud platform. The method provided by the present invention is transparent to the signal modulation format and can support high-speed signal encryption and decryption of high-order modulation formats. In addition, the present invention uses polarization multiplexing to realize signal encryption and decryption, has good robustness to transmission noise, and can realize plug-and-play secure communication of multi-channel photovoltaic signals.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0085] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the present application can adopt 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.) that contain computer-usable program code. The scheme in the embodiments of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0086] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes 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 generate 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.

[0087] 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.

[0088] 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.

[0089] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0090] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A cloud-edge collaborative encryption transmission method applicable to new energy stations, characterized in that: include: Inputting a continuous wave laser into the first processing unit for phase modulation to generate a phase chaotic carrier, and inputting the optical signal into the phase modulator after amplifying the light field intensity to achieve chaotic encryption; Polarization multiplexing is used to multiplex amplitude and phase chaos, and phase decryption is achieved through a reverse differential feedback loop after demultiplexing at the receiving end. The polarization state of chaotic signal is converted by polarization controller, and phase shift is introduced through optical fiber delay line to realize demodulation of optical signal.

2. The cloud-edge collaborative encryption transmission method applicable to new energy stations as claimed in claim 1 is characterized in that: The step of inputting a continuous wave laser into a first processing unit for phase modulation to generate a phase chaotic carrier comprises: Injecting a continuous wave laser into a phase modulator, converting the phase noise of the continuous wave laser into amplitude noise using a Mach-Zehnder interferometer, and converting the optical signal into an electrical signal through a photodetector; The differentiator amplifies the change process of the weak noise and inputs it into the radio frequency amplifier, uses the radio frequency amplifier to control the size of the output electrical signal, and feeds the output electrical signal back to the phase modulator; After multiple nonlinear cycles, the continuous wave laser input into the phase modulator undergoes period doubling and finally enters a chaotic state, outputting a phase chaotic carrier.

3. The cloud-edge collaborative encryption transmission method applicable to new energy stations as claimed in claim 2 is characterized in that: The output phase chaotic carrier is input into the intensity modulator to generate an enhanced chaotic carrier.

4. The cloud-edge collaborative encryption transmission method applicable to new energy stations as claimed in claim 3 is characterized in that: The implementation of chaotic encryption includes: amplifying the light field intensity through an erbium-doped fiber amplifier and injecting the light signal into the phase modulator; The intensity and phase of the chaos outputted by the uplink are both in a chaotic state, and the plaintext signal is encrypted by the phase modulator of the uplink.

5. The cloud-edge collaborative encryption transmission method applicable to new energy stations as claimed in claim 1 is characterized in that: The multiplexing of amplitude and phase chaos by polarization multiplexing technology comprises: The enhanced chaotic carrier outputted by the erbium-doped fiber amplifier of the drop channel is converted into the y polarization state through the polarization controller, and is multiplexed with the amplitude and phase chaos of the x polarization state of the drop channel through the polarization combiner.

6. The cloud-edge collaborative encryption transmission method applicable to new energy stations as claimed in claim 5 is characterized in that: The receiving end implements phase decryption through a reverse differential feedback loop after demultiplexing, including: At the receiving end, a polarization demultiplexer is used to realize demultiplexing of double-bias chaos; The incoming x-polarized light eliminates phase chaos through a reverse differential feedback loop to achieve phase decryption.

7. The cloud-edge collaborative encryption transmission method applicable to new energy stations as claimed in claim 1 is characterized in that: The demodulation of the optical signal comprises: The polarization controller is used to convert the y-polarization chaos into the x-polarization chaos, and a 180-degree phase shift is introduced through the optical fiber delay line to eliminate the intensity chaos, restore the signal amplitude, and realize the demodulation of the optical signal.

8. A system using the cloud-edge collaborative encryption transmission method applicable to new energy stations as described in any one of claims 1 to 7, characterized in that: include: A chaos encryption module is used to input a continuous wave laser into the first processing unit for phase modulation to generate a phase chaos carrier, and then input the optical signal into the phase modulator after amplifying the light field intensity to achieve chaos encryption; The phase decryption module is used to multiplex the amplitude and phase chaos through polarization multiplexing technology, and realize phase decryption through a reverse differential feedback loop after demultiplexing at the receiving end; The signal demodulation module is used to convert the polarization state of the chaotic signal using the polarization controller and introduce phase shift through the optical fiber delay line to realize the demodulation of the optical signal.

9. An electronic device, comprising: Memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the cloud-edge collaborative encryption transmission method applicable to new energy stations as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the cloud-edge collaborative encryption transmission method applicable to new energy stations as described in any one of claims 1 to 7.

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