61 results about "Key space" patented technology

Due to the appearance of dynamic structured mathematics responded by a global coupling structure, a great threat is generated to a traditional password system represented by AES-256 and information security. Most of current mainstream symmetric cryptographic systems such as AES and post-quantum encryption candidate schemes are based on discrete key space and structure modeling operation, the security of the current mainstream symmetric cryptographic systems depends on exhaustion infeasibility or mathematical difficulty complexity, and the current mainstream symmetric cryptographic systems and post-quantum encryption candidate schemes are difficult to resist attacks of adaptive dynamic coupling such as ADC. Therefore, the invention provides a novel ARE encryption system which is constructed by taking'non-modeling property 'as a core principle. A system key is generated by a non-numerable dimension perturbation function, has unique attributes of no structure, non-derivation, non-periodicity and the like, and is combined with an encryption method of a key function which cannot be covered, physical noise perturbation and a quantum random source to construct a new generation of ARE password architecture; the method has the capability of being incapable of being deduced, reduced in order, incapable of being converged to a key space and extremely high in structural modeling attack resistance, any analyzable optimization path can be blocked from the source, and it is ensured that ADC evolution attacks are completely resisted.

The embodiment of the invention discloses an image encryption method and system based on a fractional order pseudo-random number generator and DNA coding and decoding, and the method comprises the steps: determining the length of a key string required for encryption based on a partitioned image, and generating a high-randomness key string according to the fractional order pseudo-random number generator, the problems that a traditional integer order chaotic system is insufficient in randomness and limited in secret key space are solved, a CBC chain type encryption mode is introduced to conduct inter-block encryption on each block of image after block division, generation of each ciphertext block depends on a previous ciphertext, inter-block relevance is established, the problem that the inter-block relevance is missing due to the independent encryption characteristic is solved, and the encryption efficiency is improved. According to the method, the image is encrypted, the differential attack resistance of the image is enhanced, the DNA coding and decoding rule is dynamically selected based on the key string, and the image block is encrypted on the basis, so that the defect that the static coding rule is easily subjected to exhaustive attack is overcome, the real-time dynamic coding mechanism is realized, and the attack resistance of image encryption is improved.

The invention discloses an image encryption method and device, a program product and a medium, relates to the technical field of image processing, and provides an image encryption method aiming at the problem of insufficient security of image encryption by a traditional RNA (Ribonucleic Acid) algorithm to realize image encryption through combination of Arnold transformation and an RNA encryption algorithm. Moreover, in the image encryption process, a chaotic sequence is used to determine control parameters of Arnold transformation and a scrambling rule and a diffusion algorithm of an RNA encryption algorithm, so that the unpredictability of the algorithm is increased, and the encryption effect is improved. The chaotic system is high in key stream generation speed, sensitive to initial conditions and suitable for generating high-complexity keys at low cost. And the RNA encryption algorithm can quickly search the optimal encryption parameter, so that the calculation redundancy is reduced. The image encryption scheme provided by the method is high in complexity, relatively large in key space and good in security, can resist various attacks, and has very considerable application prospect and value for encryption transmission of the image.

This invention proposes an image encryption method, system, and decryption method and system, relating to the technical field of information security. It utilizes the computational holographic GS algorithm to encode the original image into a pure phase holographic encrypted image. Then, based on a pseudo-random block-based approach, a Logistic chaotic system is used to generate a pseudo-random sequence and obtain its complementary sequence. These two sequences are used to block-process the pure phase holographic encrypted image, generating two complementary sub-images. This avoids strong correlation between image pixels and ensures the reliability of encryption for each image pixel. Next, the Logistic chaotic system is used to perform a bitwise XOR operation on the block sub-images to obtain scrambled encrypted sub-images. Finally, the scrambled encrypted sub-images are synthesized into a complete encrypted image. This results in better encryption performance, a larger key space, and improved confidentiality and security during image transmission and use.

This invention relates to the fields of information security and artificial intelligence technology, specifically to a privacy-preserving open-set face recognition method based on LoRa and uncertainty estimation, comprising the following steps: generating a hash code set; pre-training a basic feature encoder to extract facial features; mapping facial features to binary hash codes in the hash code set, defining them as a target encryption key; and constructing a key space; selecting a query sample; fine-tuning the basic feature encoder multiple times to a personalized feature encoder; converging the facial features of the query sample under different conditions to the mapped target encryption key; during fine-tuning of the basic feature encoder, jointly learning evidence values ​​about the output with the total loss; in the authentication stage, calculating uncertainty; if the uncertainty value is greater than an uncertainty threshold, rejecting the access request; if the uncertainty value is not greater than a pre-uncertainty threshold, performing a bit-by-bit matching between the predicted key and the encryption key in the database.

The application relates to an optical encryption method and an optical encryption system, the method comprising: loading spatial plaintext information to be encrypted into an optical path to obtain an optical beam carrying the spatial plaintext information; modulating the optical beam into a time-varying optical field through a complex medium, wherein the dynamic characteristics of the complex medium vary with time and repeat in a fixed period, and the periodic variation of the optical field is determined by the fixed period; collecting information of the optical field in a preset time period within the fixed period as time-domain ciphertext data. In the optical encryption, an additional key control parameter, i.e. the optical field information in a specific time period within the selection period, is introduced to generate the ciphertext, the generation of the ciphertext becomes more complex and unpredictable, the key space is expanded, the leakage of the periodic characteristics of the optical field is avoided, and the security of the system is significantly enhanced. Meanwhile, since the encryption no longer depends on complete time sequence data, the requirement for the hardware performance is reduced, the implementation cost is further reduced, and the encryption efficiency is improved.

The invention discloses a multi-modal space-time alignment safe driving emotion recognition method based on sensitive word guidance. Sensitive word features are extracted through driving monitoring videos and voice data. A plurality of candidate time intervals in the video where emotions may be present are determined by analyzing the temporal attention of the sensitive word-speech text. And adaptively determining a key time frame with a driving emotion by means of sensitive word-visual time cross attention. In a key time frame, component features are extracted in a multi-space region of a face component, an alignment relationship between the component features and voice sensitive words is analyzed, and a key space region with driving emotion is adaptively determined by means of sensitive word-visual space cross attention. According to the method, the space-time asynchronous condition of the sensitive words in the multi-modal data is fully considered, the candidate time interval, the key time frame and the key space area are sequentially analyzed, the key clues of the driving emotion are gradually searched, and the accuracy of safe driving emotion recognition can be effectively improved.

This invention discloses a data storage method and system based on a scalable multidimensional learning index structure, belonging to the field of computer data storage. This system fully utilizes storage characteristics to organize data into memory and disk, significantly reducing disk I / O with minimal memory usage, accelerating data search speed, and supporting data expansion. This invention can be applied to multidimensional data indexing, typically represented by geospatial data, meeting the need for rapid multidimensional key searching in the high-dimensional key space of such data.

The invention discloses a female endocrine metabolism intelligent monitoring method, system, device and medium, a secondary encryption mode combining improved chaotic encryption and AES encryption is adopted, an adaptive parameter adjustment mechanism is introduced into the improved chaotic encryption, chaotic system parameters are dynamically adjusted according to data block characteristics, the key space is expanded, and the encryption efficiency is improved. The encryption complexity is enhanced; and AES encryption, HTTPS protocol transmission and a CRC verification mechanism are combined, so that the security and integrity of data transmission are greatly improved, and the problem of insufficient privacy protection in the prior art is solved.

The invention relates to the technical field of operation and maintenance management, and discloses an operation and maintenance task-oriented automatic template management system, which comprises the following steps of: uniformly expressing an equipment tree in a fixed sequence of projects, branch companies, machine room sub-parts / sub-items and first-level / second-level / third-level equipment through node indexing-hierarchical coding-alignment to generate a stable index vector; cross-project naming differences and hierarchy missing or redundancy are converted into recoverable index offset, the same object is positioned consistently in different tree versions, candidate screening is not affected by hierarchy jitter, a type extraction module executes alias merging on a type table to obtain type mapping, then type vectors are extracted from a task list according to the type mapping, and the type vectors are extracted from the task list. According to the method, alias crossing and granularity inconsistency are converged to a unified key space, ambiguity is eliminated in an extraction link, and template matching is accurately restrained, so that near-synonym error locking is reduced, the accuracy and stability of template automatic locking are improved, and manual proofreading and backspacing are reduced.

The invention discloses a video region-of-interest encryption method and system based on semantic perception multi-target detection and an enhanced chaotic system in the technical field of video processing and information security. The method comprises the following steps: generating a chaotic sequence as an encryption key stream by using an enhanced coupling chaotic system; according to an input video frame and an interested area text prompt defined by a user, identifying an interested area in the video frame by utilizing a semantic perception target detection network, and outputting coordinates of the interested area; according to the coordinates of the region of interest, performing classification marking on blocks of a video frame by using a video encoder to obtain region of interest blocks; and according to the encryption key stream, encrypting the region-of-interest block by using a zero-bit growth region-of-interest selective encryption strategy. According to the method, the problems that the recognition type of the region of interest is limited and the encryption key space is insufficient in the traditional method are solved, and the security and the flexibility are improved while the video format compatibility is ensured.

This information processing method evaluates the safety of a public parameter for forming a secret key space, which is a set of secret keys used in the Diffie-Hellman (DH) key exchange method. The secret key space is a vector space. The information processing method comprises: detecting a first pair of secret keys the public keys of which match in a secret key space (S31); acquiring information indicating thr relative positional relationship of the first pair of secret keys in the secret key space (S32); and further detecting a second pair of secret keys the public keys of which match in the secret key space, by using, as a starting point, each of a plurality of points in the secret key space, the points being included in a path connecting an arbitrary first point and a second point in the secret key space, the second point having a relative positional relationship with the first point (S34).

The application discloses an image encryption method based on fractional order Lur' e chaotic system synchronization. The method uses the Caputo fractional order differential operator to construct a fractional order Lur' e master chaotic system as a key stream generator, uses the time delay segmentation principle to design a time delay state feedback controller for a slave system, and ensures that the master-slave system realizes robust synchronization under the performance index mu through a linear matrix inequality (LMI) condition; a sending end runs the master system to generate a pseudo-random key stream, performs pixel scrambling and XOR diffusion encryption on a plaintext image in sequence, and transmits a ciphertext image through a public channel; a receiving end reconstructs a synchronous slave system according to a shared key, and performs decryption in reverse order to recover the plaintext image. The application expands the key space, provides a corresponding theoretical upper bound of the influence of channel interference on decryption error, considers security, robustness and practicability, and is suitable for image secure communication scenes in a noisy channel environment.

The application discloses a kind of multi-modal space-time alignment safe driving emotion recognition methods based on sensitive word guide.The application extracts sensitive word features by driving monitoring video and voice data.With the analysis sensitive word-voice text time attention, determine the multiple candidate time intervals that possibly exist emotion in video.With the sensitive word-visual time cross attention, adaptively determine the key time frame that exists driving emotion.In key time frame, extract component features in the multiple space regions of human face component, analyze its alignment relationship with voice sensitive word, with the sensitive word-visual space cross attention, adaptively determine the key space region that exists driving emotion.The application fully considers the space-time asynchronization of sensitive word in multi-modal data, sequentially analyzes candidate time interval, key time frame, key space region, gradually finds the key clue of driving emotion, and can effectively improve the accuracy of safe driving emotion recognition.

This disclosure provides a chaotic video encryption method based on a sliding encryption window, comprising: determining the sliding step size and dimensions of the encryption window according to the correlation between the initial value of the key stream and the frame content; dividing the video sequence frame by frame into a sliding encryption window to obtain the encryption region corresponding to each frame; dynamically adjusting the chaotic system parameters based on the pixel information within the encryption window to generate an encryption key stream; and applying the key stream to the pixels within the corresponding encryption window for chaotic scrambling and encryption. The scheme of this disclosure can provide feedback control of the encryption window division strategy based on the correlation between the initial value of the key stream and the frame content, thereby solving the problem of insufficient resistance to brute-force attacks caused by limited key space.

The invention discloses an implementation method of a lightweight wireless encryption communication module based on a generative quantum random number, and belongs to the technical field of wireless encryption communication. The method comprises the steps that a quantum physical entropy source is collected and preprocessed; generating a key seed by using channel fingerprint coding and a dynamic salt value injection technology; generating a session key in combination with a dynamic mask channel fingerprint binding method, and updating the session key; an encryption system of a dual-mode architecture of AES-128 and ChaCha20-Poly1305 is adopted, so that execution of data encryption and integrity protection are realized; and quantum encryption is realized by adopting a Kyber algorithm and an HKDF dynamic parameter negotiation mechanism. According to the method, the statistical deviation caused by environmental interference is effectively eliminated by performing exclusive or depolarization, channel fingerprint coding and dynamic salt value injection technologies on key seeds; meanwhile, the difference of fingerprints of adjacent channels is bound through AES-CTR masks, the system can adjust session keys in real time and effectively resist replay attacks, the HMAC-SHA3-512 isolates encryption and authentication key spaces, the side channel attack resistance is improved, and high-safety communication protection is achieved.

The subject technology receives a key-value pair. The subject technology determines a value size of the key-value pair is greater than a threshold size for an out of line blob (OLB) key space. The subject technology performs a write operation of a key-pointer pair into a regular space. The subject technology performs a plurality of write operations for multiple key-value parts of the key-value pair into the OLB key space. The subject technology performs conflict checking of the regular space for the key-value pair.

The invention provides a fault detection method and system for an analog circuit, and the method comprises the steps: obtaining a one-dimensional time sequence voltage signal outputted by a to-be-detected analog circuit in a plurality of preset fault modes, and converting the one-dimensional time sequence voltage signal into a two-dimensional detection image through employing a Grubm angle difference field; obtaining a preset fault detection model based on a double-attention residual shrinkage network, the preset fault detection model comprising a double-attention residual shrinkage block, the double-attention residual contraction block comprises a channel attention module used for adaptively calibrating the weight of a feature channel, a space attention module used for enhancing the response of a key space region in a feature map, and a soft thresholding module used for suppressing noise and retaining effective features; and inputting the two-dimensional detection image into the preset fault detection model to obtain a fault classification result of the analog circuit to be detected. According to the technical scheme, the working efficiency of analog circuit fault detection and the accuracy of a detection result can be improved.

This invention discloses a method for secure encryption of medical data, relating to the field of data encryption technology. The method includes implementing access control based on security levels, acquiring original medical images after authorization verification, stacking the images into a three-dimensional cube by channels, dynamically dividing them into blocks according to security levels, generating a chaotic encryption key based on the block information, and performing encryption operations on each three-dimensional block to obtain encrypted ciphertext. By destroying pixel correlation through channel stacking and segmentation, combined with differentiated keys generated by chaotic mapping, the key space and encryption efficiency are significantly improved, effectively resisting brute-force and statistical attacks. Permutation and substitution operations enhance the randomness of the ciphertext, ensuring encryption adapts to security levels and operates in a closed loop, guaranteeing controllable access permissions, improving the targeting and security of medical image encryption, and enabling flexible access for authorized users while ensuring efficient data encryption.

The data stream dynamic fragmentation processing method for the real-time calculation scene comprises the steps that a lease table is maintained for each fragment by adopting a system, and the lease table is used for recording a key space or a label set and a corresponding lease version number; when the data arrives, the routing module delivers the data to the fragment corresponding to the key space or the label set according to the current effective lease version in the lease table; when the undertaking relation of the key space or the label set needs to be adjusted, the old lease is revoked, and a new lease of which the lease version number increases progressively is generated and released, so that each node updates the undertaking fragmentation relation of the key space or the label set; according to the method, the lease table and lease version number mechanism is introduced, so that the key space or label set undertaking relation can be controllably and dynamically adjusted. In the fragment switching process, the old lease is revoked, the new lease with the version number increasing progressively is released, and a copy delivery strategy is adopted in a transition state, so that the problems of data loss, empty window processing and system interruption caused by fragment migration are effectively avoided.

A database system includes a commit layer implemented using a first set of host computing devices and a storage layer implemented using a second set of host computing devices. A control plane of the distributed database system determines a first sharding scheme for the commit layer and a second sharding scheme for the storage layer, wherein the first and second sharding schemes are not required to be the same. Also, in some embodiments, the second sharding scheme used for the storage layer enables overlapping key spaces across the shards of the storage layer, wherein various ones of the shards are optimized for different types of workloads.

The invention relates to an image encryption method. The method comprises the steps of obtaining three groups of encryption keys based on a Hash method and superposition of preset real number key parameters; dividing the plaintext image into P11, P12 and P13; enabling the five-dimensional dual-memristor chaotic system to generate a sequence through the first group of encryption keys, and carrying out the global scrambling of P11, P12 and P13, thereby obtaining P21, P22 and P23; performing cat mapping scrambling on the P21, the P22 and the P23 to obtain P31, P32 and P33; performing block DNA operation on the P31, the P32 and the P33 through the second group of encryption key generation sequences; performing block cell automaton operation on the block DNA operation result to obtain P41, P42 and P43; performing block affine transformation scrambling on the P41, the P42 and the P43 to obtain P51, P52 and P53; and carrying out finite field diffusion on P51, P52 and P53 through the third group of encryption key generation sequences, and then merging layers to obtain a ciphertext image. According to the method, the differential attack resistance of the system can be improved, the key space of the system is improved, and the security of image data is improved.

The invention provides an encryption communication method and device, equipment, a medium and a product, and relates to the technical field of encryption communication, and the encryption communication method comprises the steps: obtaining an encryption key in a local preset key space based on a local preset key start identifier, and carrying out one-time pad encryption on media stream data; the media stream data subjected to one-time pad encryption is sent to a media service device, and the media service device is configured to obtain a corresponding calling party preset key based on a key start identifier from a calling party terminal and decrypt the media stream data, and to decrypt the media stream data based on a key start identifier obtained from a called party terminal and decrypt the media stream data based on a key start identifier obtained from a called party terminal; and obtaining a corresponding preset key of the called party, performing one-time encryption on the decrypted media stream data again, and sending the encrypted media stream data to the terminal of the called party. According to the embodiment of the invention, the security degree of VoIP communication is improved, the packet loss rate is reduced, and a complete safe communication system capable of landing is formed.

The invention provides a consistency verification method, device and equipment, and relates to the technical field of computers or databases. The method comprises the steps of obtaining a submitted transaction event and generating a standardized event tuple, wherein the standardized event tuple comprises a global submission serial number, a time window identifier, a key space fragment identifier, a transaction intention abstract, a result set hash and a database instance identifier; a Merkel directed acyclic graph is constructed based on the standardized event tuple, the Merkel directed acyclic graph takes time window identification and key space fragment identification as dimensions, and a window root and a global root are generated through step-by-step aggregation; window roots are exchanged across database instances and consistency verification is performed. According to the method, the consistency verification efficiency can be improved.

The invention relates to the technical field of optical fiber communication encryption, in particular to a multi-dimensional encryption method and system based on a three-dimensional Lorenz-like chaotic system, and the key point of the technical scheme is that a dynamic key is generated through Hash512 mixing, the three-dimensional Lorenz-like chaotic system is driven to carry out DNA bit encryption, encrypted bits are mapped into symbols, and Cat mapping scrambling is carried out three times, so that the dynamic key is generated; and performing constellation rotation on the scrambling symbol by using a random angle generated by chaos, and finally embedding the dynamic key into a rotation symbol sequence to form a final multi-dimensional encryption transmission sequence. According to the method, a high-complexity chaotic sequence is generated under a three-dimensional Lorenz chaotic system driven by a dynamic key through technologies of multi-dimensional encryption fusion DNA bit-level coding, Cat mapping scrambling, constellation random rotation and the like, so that the key space is greatly expanded, and the defense capability on brute force attack, differential attack and statistical analysis attack is improved; and a modular design is adopted, so that integration in an existing optical fiber coherent transceiving and DSP platform is facilitated, and the balance of high safety and low system load is realized.

Embodiments of the present application provide a virtual machine creation method, device, system, storage medium and program product. In the embodiments, a physical TKM in a processor can provide a plurality of key spaces, and a usage mode allocation view of each key space is preset. According to the usage mode allocation view of the key space, a target identifier of a virtual machine to be created is determined from an identifier set of a key space corresponding to a target usage mode required by the virtual machine to be created, and effective management of key space resources is achieved. Through the preset usage mode allocation view, pre-planning and registration of the key space on the physical machine are completed. When the virtual machine is created, only the identifier of the appropriate key space needs to be automatically selected according to the target usage mode, and a new vTKM instance does not need to be dynamically applied to the physical TKM, thereby avoiding delay caused by waiting for TKM hardware resource allocation in the virtual machine creation process, and helping to improve the creation efficiency of the virtual machine.

The invention relates to the technical field of optical communication, and discloses a chaotic laser secret communication device and method with a large secret key space. The device comprises a common driving chaotic signal generation module, an optical isolator, a second optical splitter, a first chaotic carrier generation module, a second chaotic carrier generation module, a first photoelectric detector, a second photoelectric detector, an arbitrary waveform generator, a power divider and an oscilloscope. The two independent chaotic carrier generation modules are respectively excited by the shunted public driving signal, so that the driving signal and the chaotic carrier have low relevance, eavesdropping on a public driving link through direct filtering is effectively resisted, and the generated chaotic carrier is ensured to have high synchronism; and secondly, the two chaotic carrier generation modules serve as independent parameter-adjustable units, each chaotic carrier generation module has multi-dimensional adjustable physical parameters, and the parameters form a composite key of the system, so that the ability of the system to resist brute force attack is remarkably improved.

This invention relates to the field of nonlinear circuit technology, and more particularly to a hyper-jerk circuit with ReLU and an encryption method, comprising a ReLU memristor circuit and a hyper-jerk circuit. By changing the initial values ​​of the ReLU memristor circuit and the hyper-jerk circuit, different periodic states, stable point states, divergent states, and chaotic states are generated, exhibiting super-multi-stability behavior. This invention enables the encryption sequence of the memristor chaotic system to have higher initial value sensitivity, stronger quasi-randomness, and continuous broadband power spectrum characteristics compared to traditional chaotic systems. Applying it to image encryption can effectively increase its key space and improve its anti-decryption capability.

The invention discloses a three-dimensional multi-image encryption method based on a multi-dimensional multiplexing hologram. Comprising the following steps: an encryption step: encrypting a plurality of three-dimensional plaintexts and corresponding OAM information into a phase type holographic ciphertext by using a chaotic radial Hilbert mask generation technology, a multi-dimensional parameter selection hologram generation technology and a multi-dimensional multiplexing encryption hologram generation technology; in the decryption step, a decryption user firstly needs to input a group of correct digital keys corresponding to the original plaintext image so as to construct a chaotic radial Hilbert mask required by decryption, and then a correct decryption result is generated by using a Fresnel diffraction-based hologram decryption technology. The decryption step can be completed by using a decryption device consisting of a laser light source, a polarization modulator, a microscope objective, a pinhole, a collimating lens, two lenses and two spatial light modulators. The method provided by the invention has the advantages of large key space, high key sensitivity, no crosstalk in decryption and simple structure of an optical decryption device.

According to the lateral flow immunoassay test paper quantitative detection system and method based on deep learning, an innovative differential attention mechanism is integrated, key space-time dynamic characteristics of an LFA test strip within 3 minutes can be efficiently extracted and analyzed, high-precision quantitative detection can be completed within extremely short time, the diagnosis time is greatly shortened, and the detection efficiency is improved. Meanwhile, the accuracy of quantitative analysis and the objectivity of a detection result are remarkably improved; a unique time embedding module is built in a differential attention mechanism, and the module enhances the sensitivity of the model to the sequence change of an image sequence and supports built-in interpretability analysis. The requirements of instant detection on equipment miniaturization, low cost, convenient operation and highly reliable result are met.