508results about How to "Achieve hidden" patented technology

The invention discloses an H.264/AVC video information hiding method based on a predictive mode. For a macro block whose coding mode is Intra_4*4 in an I chip, a predictive mode of a 4*4 luma block is modulated to a suboptimal predictive mode from an optimal predictive mode under the circumstance that the predictive mode of the 4*4 luma block needs to be changed, and for macro blocks whose coding modes are marked not by 0 in a P chip and a B chip, a coding mode of a macro block is modulated to a suboptimal predictive mode from an optimal predictive mode under the circumstance that the predictive mode of the macro block needs to be changed; the impact on the objective quality of a video, caused by the change of the predictive mode or the coding mode, can be reduced as much as possible under the circumstance of ensuring that the secret information can be effectively hidden at the same time; on the other hand, due to the fact that the secret information not only can be embedded in the macro block whose coding mode is Intra_4*4 in the I chip but also can be embedded in the macro blocks whose coding modes are marked not by 0 in the P chip and the B chip, the higher hiding capacity can be obtained.

The invention provides a big data image protection method based on a security area, and the method comprises the steps: S1, selecting a target security area through employing a target detection method, and extracting color image features; s2, a big data technology is adopted, a big data picture set is utilized to train a network model and a test network model, an application algorithm of a deep learning model in target detection is applied, and an object area is extracted to serve as a safety area of information protection; and S3, taking the extracted security area as a steganography area ofthe encrypted image, and carrying out secret information hiding by applying a steganography algorithm. According to the invention, the application algorithm of the deep learning model is applied in the target detection, that is, the Mask R-CNN instance segmentation method, and select the region with complex texture noise in the image, an area with complex texture noise in the image, namely a foreground part, is selected, secret information is accurately hidden in a foreground object, and therefore the purpose of more secret image secret information hiding protection is achieved.

The invented method includes the following steps: firstly, collecting fingerprint image, making characteristics extraction, encryption processing, printing it on the two-dimensional bar code, concealing the fingerprint information into two-dimensional bar code; collecting two-dimensional bar code image, making image segmentation, filtering, geometric correction and layered pretreatment, identifying and decoding said bar code image to obtain the loaded encrypted information, deciphering said encrypted information to obtain fingerprint characteristic information loaded in two-dimensional bar code, comparing said information with field fingerprint information, making detection so as to implement anti-false authentication of fingerprint.

The invention discloses a graph convolutional network gradient-based node information hiding method. The method comprises the steps of (1) constructing a network graph, constructing an adjacent matrixaccording to a connected edge set corresponding to the network graph, and preprocessing the adjacent matrix; (2) constructing and training a graph convolutional network model, and determining final weight information of the graph convolutional network model; (3) according to the final weight information, building an objective function based on a goal of ensuring non-target node classification tobe accurate as far as possible and enabling target node classification to be wrong, and calculating a connected edge gradient matrix corresponding to the adjacent matrix by utilizing the objective function; (4) according to a set gradient threshold, symbolizing the connected edge gradient matrix to obtain a connected edge gradient symbol matrix; and (5) updating the adjacent matrix by utilizing the connected edge gradient symbol matrix to hide node information. According to the method, the target node information of a network can be hidden under the condition of slightly changing the structureof the network as far as possible.

The invention provides a symmetric white box encryption method with an unfixed key. The method comprises the following steps: performing key expansion by using a symmetric encryption method to acquire multiple turns of encryption keys Kn; step 2, replacing the multiple turns of encryption keys Kn to acquire replaced keys Kn'; step 3, generating a white box library; step 4, transmitting the white box library and the replaced keys Kn' to a user; and step 5, performing white box encryption by a user on to-be-encrypted data by using the replaced keys Kn', and performing table lookup by using the white box library during the white box encryption to acquire ciphertext, wherein n represents the encryption turns of the symmetric encryption method. By adoption of the symmetric white box encryption method provided by the invention, the keys in the white box encryption are not only hidden, the white box library is separated from the keys, and users can set the keys by themselves, thereby being convenient and flexible.

One embodiment of the invention provides a virtual number-based communication method, a system, a server and a storage medium. The method comprises: the first service platform receives the first service request, inquires the mobile phone number mapping table according to the called user identification in the first service request, obtains the called real mobile phone number, modifies the called user identification in the request to the called real mobile phone number, obtains the second service request, and sends the second service request to the second service platform. The second service platform assigns a virtual number to the calling real mobile phone number and the called real mobile phone number in the second service request. A binding relationship among a calling real mobile phone number, a virtual number and a called real mobile phone number is established, the calling real mobile phone number in the second service request is modified to a virtual number, a third service request is obtained, and corresponding service processing is carried out according to the third service request. The method solves the problem of code number resource waste caused by a user binding a virtual number in the prior art.

The invention provides a real-name certification system and a method capable of hiding identity information. The system comprises an Internet web application registration user terminal and a real-name certification module. The method comprises that the real-name certification module is set, an Internet application which requires real-name certification calls the real-name certification module, and the real-name certification module filters information of a registered user and stores the association relationship between an Internet application registration account and the user, so that hiding of identity information and real-name certification are achieved. The method solves the problem of information disclosure caused by direct registration through a commercial website and provides a convenient and effective management method for management departments.

The invention discloses an air swinging structure and an air conditioner. The air swinging structure comprises a clamp plate assembly, a plurality of swinging blades, a transmission connecting rod anda driving element, wherein the clamp plate assembly and a casing are detachably connected; the clamp plate assembly forms an accommodating space and is provided with a plurality of installing holes communicating with the accommodating space; the plurality of swinging blades are positioned at an air outlet and are arranged at intervals in the length direction of the clamp plate assembly; each swinging blade comprises an air guide plate and a crank handle; the air guide plate is positioned in the air outlet; the crank handle is of an integral structure with the air guide plate; the crank handlecomprises a driving part and an installing shaft connected with one end of the driving part; the driving part is positioned in the accommodating space; the installing shaft passes through one corresponding installing hole and is connected with the air guide plate; the transmission connecting rod is accommodated in the accommodating space and is rotationally connected with the other end of the driving part; the driving element is connected with the transmission connecting rod; the driving element drives the transmission connecting rod to drive the swinging blades to rotate around the installing shaft. The air swinging structure provided by the invention is the air swinging structure with the advantages of low cost and high assembly efficiency.

The present invention relates to a two-dimensional pattern modulation frequency hopping communication method. The method comprises the steps of: in a frequency hopping communication process, mapping sent information bits to two information carrier units consisting of a symbol of a frequency hopping sequence and a symbol of a frequency hopping take-off moment, and employing the frequency domain change and the time domain change of the frequency hopping patterns to represent information so as to achieve time frequency two-dimensional frequency hopping pattern modulation. The two-dimensional pattern modulation frequency hopping communication method can effectively inhibit the frequency hopping modes of tracking interference and part of frequency band interference, has an unequal interval frequency hopping period and is easy to improve the information transmission rate.

The invention discloses a transmitting end and a receiving end of a secret communication system. The transmitting end includes a main laser, an external cavity of the main laser and an information encryption module. The external cavity of the main laser has a feedback cavity, and the laser emitted by the main laser passes through the feedback cavity to form a feedback loop, so that the main laser works in a chaotic state. A phase modulator is arranged in the feedback loop of the laser, and the phase modulator performs phase modulation on the light in the feedback loop according to the phase key, and the phase key is a pseudo-random sequence. The chaotic laser signal sent by the main laser working in the chaotic state is sent out through the information encryption module. Only when the laser at the receiving end has the same feedback structure and phase modulation as the main laser can it correctly demodulate the information. At the same time, the multi-feedback external cavity with high-speed phase modulation can also hide the time-delay tag of the chaotic laser, improving the security of the communication system.

The present application provides a method and system for hiding application icons, and an intelligent terminal. When detecting a user-input hiding instruction, it is determined that the user needs to hide the application icon at this time, and the application icon corresponding to the hiding instruction is determined. Drag the application icon corresponding to the hiding instruction into the transparent folder to hide the application. It can be seen that compared with the application hiding method in the prior art, it is more convenient and quicker.

The invention discloses a general steganography method based on deep learning. The method comprises the following steps: S1, carrying out hiding processing on a sender; dividing secret information tobe hidden into n groups of information fragments, wherein each group of information fragments correspond to one category label, a deep learning model is adopted, the category label and random noise are used as drive, a pseudo-natural image of a specified category is generated, and the pseudo-natural image is used as a secret-containing image input channel after hiding processing; and S2, carryingout extraction processing at a receiver: inputting the secret-containing image into a discriminator by the receiver to carry out image authenticity identification and image category judgment, then sending the image category information into a function converter to be processed to obtain a secret information fragment, and decoding the secret information fragment to obtain original secret information. According to the invention, the security and confidentiality of information transmission can be greatly improved.

The invention discloses a transmitting terminal and a receiving terminal of a secure communication system. The transmitting terminal comprises a main laser, an external cavity of the main laser and an information encryption module, the external cavity of the main laser is provided with a feedback cavity, and the laser emitted by the main laser forms a feedback loop after passing through the feedback cavity, so that the main laser works in a chaotic state. A phase modulator is arranged in the feedback loop of the laser, the phase modulator performs phase modulation on the light in the feedback loop according to a phase key, and the phase key is a pseudo-random sequence. A chaotic laser signal emitted by the main laser working in the chaotic state is transmitted by the information encryption module. Only when the laser of the receiving terminal has the same feedback structure and phase modulation as the main laser, the information can be correctly demodulated. Meanwhile, a plurality of feedback external cavities of high-speed phase modulation can also hide a delay tag of chaotic laser, and thus the security of the communication system is improved.

The invention discloses an identification distribution and separate-storage method, an identification replacing transmission method and system, relating to the field of network safety. The identification distribution and separate-storage method comprises the following steps of: dividing a heterogeneous wireless network by function into a user domain, an access domain, a service domain and an attribution domain, wherein the service domain comprises at least one access domain, the access domain comprises at least one user domain, and the attribution domain and the service domain are the same network when in local service; and after the successful authentication of a terminal, allocating the attribution domain, the service domain and the access domain with domain identifications domain by domain. Based on the access authentication of the heterogeneous wireless network, the invention provides a mechanism of the identification distribution, the separate storage and the replacing transmission of the identification. In the transmission process of the domain identification in the user domain, the access domain, the service domain and the attribution domain, the real identity and the location information of a terminal can be effectively concealed through the retrieval and the replacement among domains and the dynamic update at different identification mapping servers, thereby enhancing the credible access of the heterogeneous wireless network and the safety protection capacity on mobility problems.

The invention relates to a vector map reversible information hiding method based on LSD planes. Top points of a vector map are sequentially scanned to obtain x-coordinate sequences and y-coordinate sequences of the top points; scaling positions of the coordinates are moved towards the right side to obtain new coordinate sequences; MSD planes and the LSD planes are calculated; the LSD planes are sequenced according to the ascending sequence to obtain orderly LSD planes; watermarks are embedded in the orderly LSD planes; the coordinate sequences of the orderly LSD planes containing the watermarks are adjusted to obtain LSD planes containing the watermarks; the coordinate sequences containing the watermarks are obtained through calculating; scaling positions of the coordinates in the coordinate sequences containing the watermarks are adjusted; a vector map containing the watermarks is obtained.

The present invention provides a method and device for embedding additional information in an image, including: selecting at least one area from the image according to the temporal characteristics of the image itself, and the area is composed of the area boundary and the area inside; The time-domain features are respectively set with the corresponding least significant bit LSB level; for each region, according to the corresponding LSB level and the LSB hiding method is used to embed the pre-set boundary mark into the region boundary, according to the corresponding LSB level and adopt the LSB hiding method to Additional information is embedded inside the area. The application of the solution of the present invention not only realizes the hiding of additional information, but also embeds additional information more flexibly under the condition of ensuring that the image is not perceived.

The invention discloses a control flow hiding method for remote computing. The method includes the following steps that original programs are divided into the open programs, the confidence programs and condition list group set files, the SGX function of the safe execution environment of a sixth-generation Intel processor is used for performing program branching statement condition judging in a confidence region with the hardware protection function, and therefore real hiding of program branching statement conditions is achieved.