83 results about "Brute force" patented technology

The invention provides a molecular identity authentication system and method based on DNA origami framework layered assembly. The molecular identity authentication system comprises a disclosed skeleton chain and a plurality of shared staple chains, the shared staple chain comprises staple chains shared by three groups of single bodies and staple chains shared in pairs, and the staple chains are used as secret keys to be distributed to three participants so as to prepare the three groups of single bodies respectively, and then the three groups of single bodies are combined and spliced into a tripolymer with a dot matrix pattern, so that multi-user collaborative layered chain type assembly is realized. According to the molecular identity authentication system based on DNA origami framework layered assembly, the system combination complexity is improved to the information theory security level, so that the biological information security protection capability is improved, and brute force cracking is prevented.

A system includes an originating client platform, a first intermediate client platform, and a bridge platform. A first electronic processor of the originating client platform is configured to generate an authorization request and transmit the authorization request. A second electronic processor of the first intermediate client platform is configured to receive the authorization request and determine whether the authorization request is malicious or not malicious. In response to determining that the authorization request is malicious, the second electronic processor is configured to store the authorization request in a data store, transmit an authorization request denial, and transmit an incident payload including details of the authorization request. A third electronic processor of the bridge platform is configured to receive the incident payload, generate a security profile based on the incident payload, and transmit the security profile to a second intermediate client platform.

The present invention provides an end-to-end panoramic image stitching method, an electronic device, and a storage medium. The panoramic image stitching method comprises the following steps: acquiring pictures captured by multiple cameras of a vehicle; processing the multiple pictures to obtain camera data; and inputting the camera data, preset parameter data and weight data into a trained panoramic image stitching model to generate a panoramic image, wherein the parameter data is a coordinate mapping relationship between the pictures and the panoramic image, and the weight data is weights of the pictures in the panoramic image. The method can obtain a panoramic stitched view in an end-to-end manner by directly inputting camera data, parameter data and weight data into a stitching model, without intermediate transformations and brute-force matching. The method involves few model parameters, requires less inference time and less GPU computing power, achieves relatively high real-time performance, and is suitable for embedded platforms.

The invention provides an SSH brute force attack detection method and device. The method comprises the following steps: constructing a sample array; screening samples in the sample array by using a preset screening strategy to obtain reserved samples; extracting target statistical data of each reserved sample, and performing threshold judgment according to the target statistical data; and judging an SSH brute force cracking result according to a threshold judgment result. According to the method, a plurality of statistical characteristics, calculation characteristics and threshold value judgment methods are combined and used for detection, detection depending on single frequency or port characteristics is avoided, false alarms are reduced, and the detection accuracy is improved.

A method is provided for detecting proximity between objects using threshold based clustering. The method includes receiving object data of a plurality of objects in a space to be monitored, from one or more data capturing devices disposed in a space, clustering the object data into one or more clusters, based on a predetermined threshold distance, thereby reducing the search space, and processing the one or more clusters using brute force to identify the plurality of objects which lie within the predetermined threshold distance of each other, thereby identifying the plurality of objects that are at risk of collision.

The invention discloses an identity verification method and system, and the method comprises the steps: generating a verification result through a verification algorithm after an identity verification server receives an identity verification request; when the verification result is successful, generating a legal identity certificate; and when the verification result is failure, generating a counterfeit identity certificate, and generating at least one of counterfeit reasonable data, counterfeit reasonable authority and counterfeit reasonable abnormity. The method has the core advantages that fake reasonable information is returned when verification fails, so that illegal visitors cannot deduce correct identity information by using failure feedback and cannot distinguish the authenticity of acquired data, authority or abnormal prompts, illegal behaviors such as library collision attacks and brute force cracking are effectively avoided, and the safety of the visitors is improved. The defect that key information is leaked due to failure feedback in the traditional identity verification technology is overcome, and the security of system data and functions is remarkably improved.

The application discloses a kind of mobile terminal operating system information protection methods based on hardware certificate, comprising the following steps: one, in boot partition and recovery partition using asymmetric encryption algorithm write mutual certificate system of confirmation;Two, whether through boot partition or recovery partition start is needed to ensure the integrity of another partition.Current mobile terminal operating system can be read by the system partition file in the way of writing the third party system that can be started in recovery partition, there are mobile terminal operating system files directly read, brute force cracking user password authentication and other security problems, all the startable partitions of the system are introduced into the certificate using asymmetric encryption algorithm in the application, only the certificate and the partition are complete, the system can normally run, thereby preventing the system from being maliciously tampered with, ensuring that the user cannot obtain system root permissions and cannot modify system files, with higher security and convenience.

The invention relates to the technical field of image processing, in particular to an MLCC metallographic microscopic image splicing method and system for repeated textures, and the method comprises the following steps: S1, obtaining a first image and a second image; s2, carrying out exhaustion matching by adopting a violent matcher to obtain an initial matching point pair set; s3, performing mismatching elimination processing on the initial matching point pair set to obtain a final inner point matching set; s4, calculating an affine transformation matrix between the first image and the second image; s5, aligning images in the image sequence in the affine transformation matrix by adopting a chain accumulation transformation mode to obtain a third image, and performing exposure compensation processing on the third image to obtain a fourth image; s6, an optimal path search algorithm is adopted to determine a splicing seam with the minimum visual cost in the overlapping area of the fourth image, feathering fusion is carried out along the splicing seam, and a fifth image is obtained; s7, cutting the fifth image to obtain a target spliced image; and the problem of matching fuzziness caused by repeated textures is effectively solved.

This technology is applied in the field of network security. This invention provides a method and apparatus for defending against SSH brute-force attacks through log analysis. The purpose of this invention is to solve the problem of inefficiency in existing security defense measures when they cannot cope with brute-force attacks. The main solution includes: acquiring security logs and system logs from monitoring devices and providing them to the perception module; acquiring the attacker's source IP address, username, and time; the perception module recording the attack source IP address, username, and time information in memory and performing statistics within a set time period; querying third-party professional threat intelligence to return the attack source IP address attribution information and threat score; the log threat analysis module defining the danger level of the brute-force threat based on the attack source IP address and threat score; and implementing different corresponding response measures based on the risk identification results of the threat analysis module.

The invention discloses a low signal-to-noise ratio ADS-B (Automatic Dependent Surveillance-Broadcast) signal coherent receiving method based on an expectation maximization algorithm, which belongs to the technical field of coherent receiving methods, and comprises the following steps of: realizing accurate synchronization of ADS-B signals through energy accumulation and matched filtering, and then estimating and compensating frequency offset and phase offset through the expectation maximization algorithm, and finally, decoding and brute force error correction are carried out. According to the method, information bits behind a leading head are fully considered, the value probability of each bit is analyzed, and actually transmitted data information is taken as a hidden variable, so that the estimation precision of frequency offset and phase offset is greatly improved, the sensitivity index of a satellite-based ADS-B receiver can be effectively improved, the sensitivity of the receiver can reach-102dBm under 90% of correct decoding probability, and the accuracy of the receiver is improved. And meanwhile, the processing delay of the frequency phase offset estimation is less than 50 us, so that the coherent receiving method with limited resources can be used on the small cubesat more easily.

The present application belongs to the technical field of encrypted transmission, and particularly relates to a kind of encrypted processing method of geographic information data, comprising: constructing different levels of encryption keys according to role permissions, each level of key contains a plurality of groups of chaotic mapping parameters, and the next level contains all parameters of the previous level. Each group of chaotic mapping parameters is used to encrypt geographic images, and the results of each group are used to form the ciphertext of the corresponding level. The specific process is as follows: S1, generate a chaotic sequence; S2, select pixel points in the image without replacement based on the chaotic sequence, encode the selected pixel points using AMBTC, obtain high quantization values, low quantization values, and binary masks, and concatenate the corresponding binary numbers to form the encoding result; S3, repeat S2 until all pixels are selected, and collect the encoding results to form the encryption result under this group of parameters. The present application combines permission management and chaotic characteristics, realizes hierarchical encryption of geographic images, and can resist statistical analysis attacks and brute force attacks.

The present invention discloses a simulated interview method based on an AI big model, which relates to the technical field of simulated interviews. The present invention collects the recorded data uploaded by the authorized user after each simulated interview, and analyzes the data by a fuzzification processing module. During the analysis, the recorded video data of each question text contained in the recorded data is fuzzified frame by frame, so that the blurring of each frame of image is reversible. On the one hand, the targetedness of the blurring is ensured while the degree of the blurring is guaranteed, and the blurring strength of different pixel points is dynamic. Compared with the traditional blurring algorithm, the reversibility of the blurring is achieved. On the other hand, the mean is calculated for each pixel point in the image, so that the encryption result of each frame of image is unique, which effectively resists brute force cracking, and only the face area is fuzzified. Compared with encrypting the entire recorded data, computing resources and processing time are saved.

The application provides a DFA algorithm-based card bin matching method and system, and relates to the technical field of Internet. The method comprises the following steps: constructing a card bin library, and locally caching database card bin information; storing the information into the local cache; when a service is started and initialized, first querying the database card bin information data to obtain a list set; traversing the set to take the card bin therein as a key and the entity data as a value; taking the first 6 bits of the card bin with 6 bits or more as the key, and directly taking the card bin with less than 6 bits as the key; first judging whether there is a key; when there is no key, taking a newly created list set as a value, and putting the card bin into the card bin library in a reverse order according to the length of the card bin; when there is a key, putting the card bin data into the list set, and storing the card bin into the card bin library in a reverse order according to the length of the card bin. The method can realize accurate and efficient matching of the card bin, and avoids the problem of removing the database brute force query.

The invention discloses an equipment password management method, system, equipment, medium and product, and relates to the technical field of Internet of Things, intelligent equipment generates an aging key combination based on a basic key and current time on the premise of no synchronization, and any password in the aging key combination can manage the intelligent equipment; and the management platform issues the determined platform aging key to the user according to the basic key of the intelligent device and the management demand of the user for the intelligent device, so that the user can manage the intelligent device. By adopting the embodiment of the invention, brute force password cracking and illegal entering behaviors can be effectively prevented, the communication frequency between the intelligent equipment and the management platform is reduced, and the endurance time of the intelligent equipment is effectively prolonged; and management control of the intelligent equipment in a network-free environment can be realized, and normal management of a user can be ensured even if the communication module is damaged.

The invention relates to the technical field of data transmission and network security, and discloses a multi-tenant data isolation and sharing method and system in an SaaS mode, and the method comprises the steps that a data owner client executes data isolation hierarchical encryption and blind storage, and deploys a sharing strategy to a block chain; the SaaS platform responds to the access request, calculates a risk score in combination with context features and historical audit data, and executes blind state key conversion after risk assessment and strategy contract verification are passed; and the receiver client verifies the signature, decrypts to obtain the plaintext data and returns the audit log. According to the invention, through a blind storage and blind calculation mechanism, isolation of data ownership and platform management right is realized, and the risk of plaintext data leakage caused by unauthorized access of a platform administrator and key leakage of a server side is effectively prevented; and meanwhile, a dynamic risk assessment mechanism is utilized to identify account embezzlement and brute force cracking risks, and safe sharing of data is guaranteed.

The invention discloses an anti-quantum cryptography data security protection system and method for juveniles. Aiming at the problem that an existing education APP and intelligent equipment only adopt a traditional encryption algorithm (such as RSA and AES) and cannot resist quantum computing attacks, the invention provides a four-layer protection architecture of a terminal layer, a transmission layer, a storage layer and a supervision layer. The terminal layer is provided with a PQC chip in advance and encrypts the biological characteristic data by using a lattice password; the transmission layer establishes a quantum security VPN channel and deploys a forward security protocol; the storage layer adopts an anti-quantum block chain evidence storage technology; the supervision layer introduces a PQC auditing and threat intelligence sharing mechanism. Through experimental verification, the blocking rate of the system to quantum brute force attack reaches 100%, and the man-in-the-middle attack breakthrough rate is reduced to 0%. The method is suitable for education platforms, child intelligent equipment and other scenes, and the long-term safety risk of juvenile data in the quantum era is effectively solved.

An identity authentication method is disclosed in embodiments of the present application. When a requester and an authentication access controller perform identity authentication using an authentication mechanism of a pre-shared key, the identity information of entities is transmitted in the form of ciphertext, thereby preventing the identity information of the entities from being exposed during the transmission, so that attackers cannot obtain private or sensitive information. The mutual or unilateral identity authentication between the authentication access controller and the requester is achieved while ensuring the confidentiality of the entity identity and related information, thereby laying a foundation for ensuring that the user accessing the network is legitimate and / or the network accessed by the user is legitimate. Meanwhile, in connection with key exchange calculations and by an ingenious and detailed design, the ability of the authentication process to resist dictionary brute force attacks or quantum computing attacks is enhanced. Further disclosed in embodiments of the present application are an identity authentication apparatus, a storage medium, a program, and a program product.

The invention relates to a Unity AssetBundle resource encryption method and a system thereof, and belongs to the technical field of computer software security. According to the method, transparent encryption, client local dynamic key generation and automatic decryption full-process collaboration are realized through an encryption tool. A multi-round symmetric encryption algorithm driven by a dynamic key is adopted, block encryption and streaming key diffusion characteristics are fused, and aiming at AssetBundle structure optimization, differential attack resistance, brute force cracking resistance and tampering resistance are achieved. And the key is only generated in real time in the memory of the client without landing and server circulation, so that the leakage risk is completely eradicated from the source. Unified loading of encrypted or unencrypted resources is supported, and smooth transition of the game to an encrypted version is achieved without forcing a player to update the whole package. In the aspect of performance, the time consumption for batch decryption of 500 resources is less than or equal to 3ms, and the performance loss is lt; 1%. The method is compatible with Android, iOS, Windows, swan, macOS and small game multi-terminal environments, zero codes are accessed, and the industrial problems that the key management risk is high, the decryption performance is poor, and the switching wastage rate is high are effectively solved.

The present disclosure belongs to the technical field of image processing, and discloses a method for matching ORB feature points of adjacent two frames of images for visual SLAM, comprising: extracting ORB feature points from adjacent two frames of images, performing coarse matching by using a brute force matching method, obtaining N pairs of matching pairs, obtaining the coordinates of each feature point successfully matched on the adjacent two frames of images in the image, including the point on the previous frame (from.x, to.y) and the point on the next frame (to.x, to.y); obtaining the area of the matrix obtained by drawing a perpendicular line to the image from the feature point, the area including S from and S to , obtaining the area ratio of the matrix in the image, the area of the image including S, the area ratio including and taking the absolute value of the difference of the area ratio of each pair of points after brute force matching in the image as |S d |. The method for matching ORB feature points of adjacent two frames of images for visual SLAM solves the problem of a large number of false matches generated by traditional matching methods.

The application discloses a computer data security encryption protection system based on a computer network, relates to the technical field of computer security, and calculates and generates an AES encryption key K in an AES encryption key algorithm unit by comprehensively considering influence factors such as plaintext data size Pds and key generation time Tgen AES , which can greatly improve the complexity and randomness of the data encryption key, the dynamic generation mechanism of the encryption key enables the computer data security encryption protection system to effectively resist brute force cracking and replay attacks, and the dynamic adjustment of the key by a session key adjustment value algorithm unit can guarantee the reliability of data encryption; in addition, the dynamic adjustment of the key can reasonably allocate system resources according to the change of the multi-data encryption performance, so that the computer data security encryption protection system can evaluate the subsequent encryption strategy according to the current encryption performance of different data under the condition of limited encryption resources, thereby saving computing resources.

The present application relates to a kind of image encryption and decryption methods based on heterojunction memristor PUF, belong to hardware security technical field, the method includes first entropy source extraction: extracting the high resistance state current of each unit in heterojunction memristor, second entropy source extraction: the same heterojunction memristor device is operated multiple times, reads its low resistance state current value and calculates its coefficient of variation, encryption structure dynamic binding: using average value and setting function dynamically determines global structure parameter in encryption algorithm, double binding encryption and decryption process: when encryption, with binary initial key as input, and according to global and local structure parameter, encryption operation is carried out, while recording the topological evolution index in encryption process;When decryption, the global and local topology is reconstructed by topological evolution index reverse, and decryption is completed after matching and obtaining binary initial key;It improves the ability of anti-brute force cracking, while guaranteeing the reversibility and reliability of encryption and decryption, with good scalability and application prospect.

The utility model relates to the field of locks, and discloses a thickness-adjustable industrial cabinet lock which comprises a barrel, two fixing plates are fixedly connected to the upper portion of the outer wall of the barrel, a fixing shaft is fixedly connected to the inner walls of the two fixing plates, a rotating shaft is rotatably connected to the outer wall of the fixing shaft, and a supporting shaft is fixedly connected to the outer wall of the rotating shaft. A cover plate is fixedly connected to the other end of the supporting shaft, a sleeve is movably connected to the position, close to the upper portion, of the inner wall of the barrel, a fixing rod is fixedly connected to one side of the sleeve, a sliding block is fixedly connected to the bottom end face of the sleeve, and a third groove is formed in the inner wall of the barrel. According to the utility model, through the cooperation of the fixing rod, the sliding block, the fixing block and the spring, the whole structure can be more conveniently installed in a cabinet body, the installation and the taking-out are more convenient, the taking-out is not required, and through the cooperation of the cover plate and the magnetic block, the lock cylinder opening is protected, so that dust or moisture is prevented from entering the lock cylinder, and a key is prevented from being inserted and pulled out too difficultly.

The invention discloses a Galois group permutation representation-based key generation method and device, and the method comprises the steps: carrying out the construction domain expansion, determining a Galois group, and generating an initial key segment through the permutation of the elements of the Galois group on the elements in an expansion domain; and integrating the plurality of initial key segments by adopting a nonlinear fusion algorithm, and introducing a random factor to generate a final key. According to the method, the non-exchangeability and the complex algebraic structure represented by Galois group replacement are fully utilized, the key space is large, the randomness is high, and brute force cracking and cryptographic analysis attack can be effectively resisted. Meanwhile, domain expansion parameters and Galois group types can be dynamically adjusted according to the network state, the data flow and the security threat level, different application scenes can be adapted, the method can be widely applied to the fields of network communication encryption, data storage security, Internet of Things equipment authentication and the like, and an efficient and reliable key generation solution is provided for information security.

Even if all possible combinations are checked by brute force, it is possible to obtain the optimal solution in a short time. [Solution] The allocation process performed by the roster generation device according to the present invention is configured to determine multiple nurses who can work in a target work style on a target work day, determine a weight value for each of the determined multiple nurses based on their work status and a random number, extract the number of nurses from the determined multiple nurses equal to the number of nurses who need to work in the target work style on the target work day, calculate the sum of the weight values ​​of the nurses who make up the combination for each of the multiple combinations obtained, rank the multiple combinations based on the calculated sum of the weight values, and determine whether the combinations ranked relatively higher by this ranking meet the requirements for working in the target work style.

The utility model provides a kind of multifunctional rotary parking rack of ejection seat or chair basin, belong to aviation maintenance technical field, including support, it is main support piece, and support is also vertically provided with support rod on it;Movable plate, it is fixed in the end of support rod away from support by hinge connection, movable plate and support are also cooperatively provided with driving structure between, driving structure is used to drive movable plate to rotate on support;Tray, driving element is equipped on the side of movable plate away from support rod, the side of driving element away from movable plate is connected with tray, driving element can drive tray to rotate, fixed structure is equipped on tray, fixed structure can fix ejection seat or chair basin on tray;The utility model can fix ejection seat or chair basin, without multiple people rely on brute force to drive ejection seat to rotate under the condition of saving operator number, can also be more labor-saving, and the multi-angle rotation of seat can be realized.

The present application discloses a processing method for a brute force hot unplug operation on a U.2 NVMe solid-state disk, including: predefining a short signal pin for detecting whether an NVMe solid-state disk is in place; presetting to trigger an operation of calling a SMI program according to input state change information of GPIO of a PCH chip, where an input state value of the GPIO is determined according to a connection state of the short signal pin and a U.2 slot; calling the SMI program when a change in an input state of the GPIO is detected, and reading the input state value of the GPIO; and breaking a link between a PCIe root bridge and the NVMe solid-state disk by using the SMI program if the input state value of the GPIO is a corresponding value about the NVMe solid-state disk not in place.