152 results about "Steganography" patented technology

The invention discloses a high-load data steganography method, system and device and a medium, and the method comprises the steps: obtaining secret data of a power system, and converting the secret data into a novenary sequence; a quantum key distribution system is utilized to generate a shared key, the novenary sequence is encrypted through an encryption key, encrypted information is obtained, and the shared key comprises the encryption key and a mapping key; determining a corresponding first unit matrix from a preset mapping library based on the mapping key, and performing non-overlapping tiling on the first unit matrix in a two-dimensional plane to obtain a second-order reference matrix; and scanning a preset carrier image into a non-overlapping first pixel pair sequence according to a Hilbert curve, and embedding the encrypted information into the first pixel pair sequence by using the second-order reference matrix to obtain a steganographic image, so that the data transmission security can be improved.

The invention provides an image privacy protection-oriented reversible adversarial sample generation system and method, and relates to the technical field of artificial intelligence and image privacy protection. The system comprises an input module, a semantic guidance mask generation module, a potential confrontation generation module and a reversible steganography embedding module. The input module acquires an original image, generates a binary mask in the semantic guidance mask generation module, and generates adversarial text description by adopting a visual language model; a final image potential representation is generated in a potential adversarial generation module through forward diffusion and reverse sampling of a diffusion model, and adversarial disturbance is introduced by adopting a gradient optimization algorithm to generate an adversarial sample image; and finally, discrete wavelet transform is adopted in the reversible steganography embedding module to separate out a high-frequency sub-band, and a reversible neural network is combined to obtain a secret-containing hidden image. According to the method, the three requirements of visual authenticity, visual anonymity and machine identifiability can be met at the same time, and an innovative solution is provided for privacy protection in an advanced face recognition scene.

The invention discloses a network traffic restoring and monitoring method, which relates to the technical field of network monitoring, and comprises the following steps of: capturing an original encrypted traffic data packet, and dynamically embedding steganography marks in non-key fields reserved at message headers of a network layer and a transmission layer to generate an encrypted traffic data packet carrying steganography metadata; injecting the behavior element triple set into the constructed cross-protocol threat knowledge graph to perform adjacency relation matching, and outputting a high-risk threat matching result when the overlap ratio of an unknown protocol behavior path and a graph threat link exceeds a preset safety threshold; and triggering real-time blocking according to a high-risk threat matching result, generating an auditing alarm record, updating a cross-protocol threat knowledge graph, and completing encrypted flow reduction and intelligent monitoring closed loop. According to the method, the steganography marks are dynamically embedded in the message heads of the network layer and the transmission layer, so that the encrypted traffic carries steganography metadata in the transmission process, and the hidden marking of the encrypted traffic is realized.

The invention discloses a text-image multi-mode generative steganography method and system, an encryption model and a decryption model are constructed based on a conditional diffusion model and are respectively deployed to an information sender and an information receiver, the information sender divides to-be-hidden secret information into two parts, one part generates a secret-containing text by adopting a text steganography method, and the other part generates a secret-containing text by adopting a text steganography method; the other part generates a secret-containing hidden variable, the secret-containing text is used as a condition of the conditional diffusion model, the secret-containing text and the secret-containing hidden variable are input into the encryption model together to generate a secret-containing image, and the information sender sends the secret-containing text and the secret-containing image to the information receiver together. And an information receiver respectively extracts two parts of secret information from the received encrypted text and the received encrypted image, and original secret information is recovered after merging. According to the method, after the to-be-hidden secret information is split, the secret-containing text and the secret-containing hidden variable are generated respectively and input into the conditional diffusion model to generate the secret-containing image, and the secret information hiding capacity is improved.

The invention relates to the technical field of data encryption, in particular to a VPN dynamic hierarchical encryption system and method for cross-border data transmission, and the method comprises the steps: dividing a data flow into different hierarchies based on information entropy; the high-entropy core data is embedded in a steganography mode through a chaos algorithm by means of the low-entropy redundant space; carrying out global basic encryption on the mixed carrier, and respectively executing chaotic scrambling and differential iterative diffusion for the steganography region and the middle entropy region; dynamically injecting a filling block according to entropy feedback to realize flow homogenization shaping; and splitting the deconstructed index through threshold secret sharing, and performing hidden distribution. According to the method provided by the invention, the concealment and security of cross-border data transmission can be effectively improved.

The invention relates to the technical field of information encryption and decryption, in particular to an image information encryption and decryption method and software system based on a digital image steganography technology. According to the technical scheme, the method comprises the following steps that a carrier image format and a to-be-processed information type are determined, the carrier image format comprises a PNG image and a JPEG image, and the to-be-processed information type comprises text information, picture information and audio information; encrypting the plaintext information to generate ciphertext information; and selecting a corresponding steganography path according to the format of the carrier image, embedding the ciphertext information into the carrier image, generating an encrypted image, and generating a key file recording the embedded related information. According to the method, various image formats and information types are supported, the compatibility, safety, robustness and practicability of information encryption and decryption are improved through key encryption, face binding verification and a compensation mechanism for JPEG, and the method is suitable for scenes such as information protection and private transmission.

The invention discloses a coal-fired power generation data encryption method and device, equipment and a medium, and relates to the technical field of encryption, and the method comprises the steps: carrying out the preprocessing of target coal-fired power generation data; converting the preprocessed target coal-fired power generation data into a two-dimensional matrix; performing multi-round iterative encryption on the two-dimensional matrix in a manner of generating a random matrix for encryption by using chaotic mapping to obtain an encrypted data matrix; carrying out steganography on the encrypted data matrix to obtain steganographic data; the steganographic data is used for storage or transmission. According to the invention, the data security can be improved.

The invention discloses a language steganography load enhancement method and device based on a large language model. The method comprises the steps that firstly, a shared semantic restorer obtained through fine adjustment of the large language model LLM is constructed; the sender performs low-redundancy compression and key information protection on the secret message to be processed through the shared semantic restorer; converting the obtained compressed message into a pseudo-random bit stream through index compression coding based on probability; embedding the pseudo-random bit stream into a carrier text generated by a large language model LLM through an underlying steganography algorithm to obtain a steganography text, and transmitting the steganography text through a common channel; and after receiving the steganography text, the receiver losslessly recovers the original secret message through reverse operation based on the steganography algorithm shared with the sender, the coding mode and the shared semantic restorer. According to the method and device, the processing flow of the secret message is optimized through the large language model, and efficient compression and lossless recovery of the secret message are achieved.

The application discloses an AAC security steganography algorithm and system based on a masking effect. The human ear hearing masking effect can cause some audio signals with low intensity to be masked by signals with high intensity, and there is space for hiding secret information. Therefore, the application analyzes a quantization process of MDCT coefficients in AAC coding, records the masked audio signals as modifiable positions, and combines an STC adaptive steganography framework to realize embedding of secret information. Experimental results show that the algorithm can achieve a maximum embedding capacity of 13.61 kbps, can guarantee auditory concealment of speech, and has good security.

The invention discloses a fault detection method for multi-modal sensing data fusion and embedded optimization for intelligent manufacturing, and the method comprises the steps: detecting the operation state of intelligent manufacturing equipment, collecting multi-modal sensing data, and carrying out the preprocessing of the multi-modal sensing data; based on an optimization criterion, obtaining embedding characteristics of each mode, and mapping the embedding characteristics to a uniform low-dimensional embedding space; introducing an optimization constraint mechanism for feature fusion; carrying out weighted fusion on each modal embedding feature; carrying out encryption transmission and steganography optimization regulation and control on the fusion embedded features, and uploading the fusion embedded features to a cloud for cross-factory collaborative operation and maintenance; an information and data bidirectional reversible reconstruction and precision guarantee mechanism is constructed, and accurate decoding of embedded information, lossless restoration of original data and accurate traceability of faults are realized. According to the method, the response precision and deployment adaptability of fault detection and predictive maintenance in the industrial intelligent manufacturing process are improved, and the method is suitable for a complex working condition environment with extremely high requirements on model stability and processing efficiency in a manufacturing field.

Exemplary systems and methods are disclosed for removing steganography from digital data is disclosed. The method and system involve receiving a digital data. At least one processing device accesses a steganography purifier model. The at least one processing device includes at least a generator configured to scale a magnitude of individual data elements of the digital data from a first value range to a second value range. The scaled data elements are downsampled to remove steganography data embedded in the digital data and produce a purified version. The purified version is upsampled by interpolating new data elements between one or more adjacent data elements to provide an upsampled purified version. The magnitude of the data elements of the upsampled purified version are scaled from the second value range to the first value range to generate a purified output version.

The invention relates to a message mapping-based generative implicit representation steganography method, which comprises the following steps of: representing multimedia data by using an implicit neural representation technology, and converting the multimedia data into uniform point cloud data for message embedding; a secret message needing to be embedded is expressed in a binary mode and then converted into noise data through mapping, the noise data are input into a function generator to be subjected to message embedding, a message extractor is used for extracting the noise data, and the secret-containing message is recovered through inverse mapping; the function generator and the message extractor are obtained through training of a training set; in a message embedding process, a noise space of the function generator applies a single-bit and multi-bit message mapping scheme to embed noise data; in a noise extraction process, a message extractor extracts noise data by setting a plurality of point convolution layers and a full connection layer. According to the method, multimedia data of different sizes can be received, the robustness is good, the message extraction accuracy reaches the baseline level, and the method also has the advantage in the quality of the generated secret-containing carrier.

A method and system for detecting computer network data leaks over optical channels, for example using a mobile phone or other handheld device to rapidly scan a room with many light sources to identify the hidden transmission of data via optical steganography. The method of identification leverages spectral divergence created by the entropy produced by steganographically embedding data in the optical channel. The method and system proceed through multiple steps that can be computed in near real-time to eliminate background spectrum effects and isolate likely sources of information. The user or automated detection system captures a short video, and the video frames are then subdivided into smaller blocks effectively producing many adjacent videos of smaller pixel area.

The invention relates to a robust image watermark embedding method based on fixed neural network steganography, and belongs to the technical field of computers. According to the method, the problems that a traditional image watermarking technology is prone to being damaged by attacks such as compression and cutting and the fine tuning cost is high are solved, robustness is obtained by adopting a HiDDeN framework to pre-train a watermark extractor, a potential diffusion model is constructed, the decoder weight is frozen, binary watermark information is mapped into potential spatial disturbance vectors, and therefore the robustness of the image watermarking technology is improved. A learnable module is utilized to generate disturbance through an L-BFGS optimizer, a visual undifferentiated image is reconstructed through a fixed decoder, and a fixed extractor verifies the watermark. According to the method, steganography is pre-set in a generation stage, post-processing performance loss is avoided, watermark consistency, attack resistance and safety are remarkably improved in combination with a fixed network structure, and the method is suitable for digital copyright protection and content traceability.

The application discloses a high-capacity provably secure steganographic embedding and extracting method and system based on cascade sampling, and belongs to the technical field of message steganography. The method comprises the following steps: acquiring input content and a secret message, and initializing a steganographic set; inputting the input content at a time step into a generation model for inference prediction to obtain a predicted candidate word set and a probability set corresponding to the predicted candidate word set; performing recursive uniform grouping on the candidate word set in combination with the probability set, and selecting a target group according to the secret message; updating the steganographic set according to the selected target group, and generating input content according to the updated steganographic set; re-executing the step of inputting the input content at the time step into the generation model for inference prediction until the secret message is intercepted completely, and outputting a final steganographic set. The application improves the steganographic capacity and the quality of generated content while proving the security of steganography.

The invention discloses a JPEG image batch steganography method and system based on experience security, and belongs to the technical field of information security. The method comprises the following steps: screening batch steganography carriers from a candidate JPEG image set based on experience security; calculating a non-zero DCT coefficient feature and a cost response curve D-alpha of each batch of steganography carriers; and calculating the optimal load rate of each batch of steganography carriers based on the non-zero DCT coefficient characteristics, the cost response curve D-alpha and the length of the load message, and executing steganography of the load message according to the optimal load rate. According to the method, the security of large-batch image steganography communication under an adaptive steganography algorithm can be improved.

The invention discloses a robust steganography method and device for privacy image protection, and belongs to the technical field of information security. The method comprises the following steps: scaling a cover image to obtain a carrier image capable of bearing privacy image information; performing frequency domain transformation on the carrier image, and constructing a frequency domain embedding domain; bit plane splitting processing is carried out on the privacy image to be protected to obtain a privacy bit plane; and designing a nested quantization index modulation algorithm, and embedding the privacy bit plane into the frequency domain embedding domain to generate a secret-containing image. According to the method, complete lossless reconstruction of the privacy image can be realized in a lossless environment, and the privacy image with identifiable semantic information can be reconstructed in a lossy environment, so that the original appearance of a sensitive image is effectively prevented from being leaked in the propagation, storage and processing processes, and the security of the privacy image is improved.

The invention provides a brightness modulation adaptive watermark embedding method for AI sample protection and a terminal, and the method comprises the steps: generating a watermark identification field for each sample in a training data set needing protection, encrypting the content in the watermark identification field, and coding the encryption result into a watermark bit stream; constructing an image brightness distribution modulation model based on the atmospheric scattering model; processing the input image I (x) through an image brightness distribution modulation model to obtain a brightness modulation image; in a brightness modulation process, embedding the generated watermark bit stream into a brightness modulation image in a self-adaptive steganography mode according to content characteristics of an input image I (x) to obtain a watermark protection image; according to the method, image content characteristics are combined, watermark embedding of minimum distortion embedding is supported, authentication and tampering prevention of image data are achieved, and the method can be used for protection of AI image samples in a high-reliability scene.

The application discloses a privacy image protection-oriented robust steganography method and device, and belongs to the technical field of information security. The method comprises the following steps: scaling a cover image to obtain a carrier image capable of carrying private image information; performing frequency domain transformation on the carrier image to construct a frequency domain embedding domain; performing bit plane splitting processing on a private image to be protected to obtain private bit planes; designing a nested quantization index modulation algorithm to embed the private bit planes into the frequency domain embedding domain to generate a stego image. The method can not only realize complete lossless reconstruction of the private image in a lossless environment, but also reconstruct the private image with recognizable semantic information in a lossy environment, thereby effectively preventing sensitive images from leaking the original appearance in the process of transmission, storage and processing, and improving the security of the private image.

The invention discloses an underwater acoustic communication method, device and equipment based on ship radiation noise, and a medium, and the method comprises the steps: mapping a to-be-transmitted bit stream to a codebook sequence which is constructed and optimized based on the ship radiation noise, and generating a transmission signal consistent with the characteristics of the ship radiation noise through signal shaping processing; a receiving end realizes signal matching identification and inverse mapping recovery of an original bit stream through preprocessing, interference compensation, correlation detection and energy combination, and the identification probability of a non-destination receiver on a communication signal is remarkably reduced by means of the disguise characteristic of a ship radiation noise imitating signal. According to the method, the problem that the communication rate is limited due to the fact that a steganography method depends on camouflage signal hiding capacity is solved, the defect that a traditional spread spectrum sequence is easily observed and detected for a long time is overcome, and the requirement of modern ocean engineering for underwater acoustic communication concealment is met.

The invention discloses a bionic circular dichroism optical encryption device based on a tiger structure, and the device comprises a first substrate, a first conductive layer, a first electrode patch, an information encryption layer, a second conductive layer, a second electrode patch, and a second substrate. Wherein the information encryption layer adopts a double-layer Z-shaped structure design to simulate a tiger function, an upper layer fixing structure corresponds to a left half tiger of a palm tube, and a lower layer dynamic rotating structure corresponds to a right half tiger held by a user. A ciphertext transmission system is constructed by regulating and controlling three key parameters of an inclination angle, a rotation angle and an electromagnetic wave incidence angle of the lower layer structure, and steganography information can be accurately decrypted by using a specific CD key only when the three key parameters meet preset matching conditions at the same time. According to the invention, the dynamic adjustable circular dichroism (CD) is innovatively realized, and an optical security system for information encryption is constructed through the bionic design of key matching.

The application belongs to the technical field of video encryption transmission, and particularly relates to a video transmission method and system for multimedia video, which comprises the following steps: identity authentication of a receiving end and a sending end; a gray image and an information sequence are randomly generated by the to-be-authenticated end, the information sequence is a binary sequence, and the number of digital 0 and 1 is equal; according to the MAC address of the to-be-authenticated end, the information sequence is hidden in the gray image through a steganography algorithm to obtain an authentication image and send the authentication image to the authentication end; the authentication end extracts an authentication sequence from the received authentication image through the steganography algorithm according to the stored MAC address of the trusted terminal, and the to-be-authenticated end passes the authentication when the authentication sequence satisfies that the number of digital 0 and 1 is equal; after the receiving end and the sending end both pass the authentication, an information key is created through a DH key exchange protocol, and the information key is used for encrypted transmission of the video. The application improves the security of video encryption transmission.

Methods and systems for hiding secret messages or data in an NET are described. A system may access data specified by a user to embed within a digital asset. The system may determine a steganography scheme to use to embed the data and embed the data within the digital asset according to the steganography scheme. The system may store the digital asset embedded with the data on a decentralized storage network and receive an associated first Uniform Resource Identifier (URI). The system may create, using the first URI, a metadata of the digital asset embedded with the data. The system may store the metadata on the decentralized storage network and receive an associated second URI. The system may create a non-fungible token (NET) based on the second URI and store the NET on a blockchain. The user or other users may subsequently retrieve the digital asset from the decentralized storage network and extract the data embedded therein.

This application discloses a method and related equipment for steganography of copyright information based on arbitrary image style transfer. The method includes: acquiring a pre-set steganography network, a target image, and copyright information corresponding to the target image; the steganography network includes a feature extraction layer and an embedding layer; extracting multi-dimensional features of the target image through the feature extraction layer to obtain a target sequence of the target image; embedding the copyright information into the Y channel of the target image using the target sequence through the embedding layer of the steganography network to obtain a content image; acquiring a style transfer network and a style image; extracting the style sequence and content sequence through the style transfer network to obtain a position-encoded content sequence, forming a stylized content image. Clearly, this application can steganography of copyright information into a content image and perform arbitrary image style transfer on the content image using a style transfer network, which can reduce copyright disputes.

The present invention provides a method and device for video traceability and security verification, belonging to the field of video security technology. The method comprises: encrypting the secret information of a target video to obtain the encrypted secret information; embedding the secret information into the target video using video steganography technology to construct a carrier video, and obtaining a video hash value of the carrier video; constructing video metadata based on the encrypted secret information, the video hash value, and video copyright information; uploading the video metadata to a blockchain network, and performing traceability and security verification on the target video based on the blockchain network. The method and device for video traceability and security verification provided by the present invention utilize blockchain technology to upload video metadata to a blockchain, thereby improving the tamper-proof and non-forgeable security performance of video steganography.

The application discloses a text image audit information recording and extraction method based on a ciphertext domain reversible steganography, and comprises the following contents: for a text image containing sensitive words sent by a user, audit information is hidden in the encrypted text image based on a ciphertext domain reversible steganography method in a terminal to form an audit record; when audit is needed, the hidden audit information is extracted from the audit record. The method reversibly hides the audit information of the text image containing sensitive words in the ciphertext image of the text image in the terminal, generates an audit record, and is ready for subsequent audit, and the audit information can be acquired without decryption, thereby protecting the confidentiality of the text image to a certain extent.

The invention discloses a virtual device data encryption transmission method related to an integrated private transmission protocol, and relates to the technical field of communication security management, and the method comprises the following steps: an MCU is powered on and detects a VBUS signal, a mobile hard disk mode is judged, the MCU indicates a bridge chip, the MCU virtualizes a partition table disk, a client of a PC and the MCU carry out bidirectional authentication and key exchange, and the MCU carries out communication security management. An encrypted secure channel is established, an encrypted file block sent by a PC is disguised into a target read-write command through protocol steganography processing, the target read-write command is transmitted, MCU interception and interpretation verification are carried out, if the target read-write command is a secure sending request, the request is written into a memory, and the technical problem that secret and secure data transmission cannot be ensured while transmission mode compatibility is met in the prior art is solved. Under a dual-mode switching hardware architecture, a virtual device and a private protocol are combined, so that the data transmission rate and the use convenience are ensured, end-to-end encryption and steganography protection are realized, and the overall security and practicability are improved.

Provided in the embodiments of the present description is an image verification method, which is executed by a steganographic device, wherein the steganographic device comprises: a photographic module and a verification module. The image verification method comprises: a photographic module capturing a first image, and using a preset steganography algorithm to add, into the first image, first information corresponding to device parameters of a steganography device; and the photographic module sending to a verification module the first image, into which the first information has been added, such that whether the first image is photographed by the photographic module is verified on the basis of the verification of the first information.

The invention discloses a method for embedding secret information into a video, a video steganography method and a related device.According to the method, a two-dimensional array of a coding unit is constructed, original one-dimensional representation is expanded to a structured two-dimensional embedding space, the number of available candidate states of each embedding operation is remarkably increased, a foundation is laid for high-capacity embedding, and the embedding efficiency is improved. By introducing polygon division, region-based coding rather than point-based mapping is realized, and the expression capability of a prediction unit division mode is greatly improved, so that more secret information can be embedded under limited structure modification, and a replacement set of an element S is screened out through a position relationship between the element S and a coverage domain, and the prediction efficiency is improved. And determining a replacement element of the element S based on the distance and performing replacement to complete secret information embedding, so that distortion cost caused by different modification directions and structural disturbance can be simulated more accurately, the candidate replacement element is ensured to be kept within an acceptable distortion range, the minimum distortion principle can be forced to be executed, and the visual quality is effectively kept.