213results about How to "Free from attack" patented technology

The invention discloses an attack detection and response method and a device of a WEB page, aiming at filtering the web page and protecting a client-side from the attack of malicious contents. The method comprises the following steps: intercepting the response message returned to the client-side by a WEB server, acquiring the response header and the response body in the response message, carrying out scanning detection on the response body, replacing the response body with prompt messages when the response body is detected to contain malicious contents, combining the prompt information with the response header and sending to the client-side. Compared with the prior art, the invention realizes the aim of precisely filtering the WEB page containing malicious contents such as Trojan horses and viruses and the like, protects the client-side from the attack of malicious contents and avoids interception of normal web page contents.

The invention provides transmission control protocol (TCP) connection processing method and system and synchronization (SYN) agency equipment. The TCP connection processing method comprises the following steps of: receiving a first synchronization message sent by a client and used for requesting to establish first TCP connection with a server, and establishing second TCP connection with the client; and after the second TCP connection is established, if an access request message is sent by the client, controlling the establishment of the first TCP connection, and transmitting the access request message to the server. The invention improves SYN agency and starts to establish the connection with the sever only after the access request message sent by the client is received again when the SYN agency and the client complete three times of TCP hand shaking connection, thereby ensuring that the attack of TCP full-connection can not reach the server; and in addition, the invention enables that the server not only well defenses the attack of SYN FLOOD, but also avoids the attack of the TCP full-connection, thereby enhancing the safety of the WEB server.

The invention belongs to the technical field of trusted cloud computing, and particularly relates to a secure cloud storage method based on SGX. The method is suitable for a client/server architecturesystem based on SGX, and comprises the following steps: a trusted identity authentication step: a client performs bidirectional authentication of a trusted identity with a server through a trusted identity authentication module of the server, and establishes a session with the server after the trusted identity authentication is completed; a credible operation environment authentication step: after the client passes the credible identity authentication, the client verifies the legality of the operation environment of the server to the server through a credible operation environment authentication module of the server; a credible execution step: the client transmits the data to an endclave of the server through a credible channel, and the endclave encrypts the data; and a cloud storage step: the server side sends the encrypted data to a cloud storage service provider. According to the method, the problems of trusted authentication and key packaging of the client and the server are solved.

The invention discloses a method and equipment for protecting a JAVA executable program. The method comprises the steps of creating a local dynamic chained library file, enumerating .class files in protected JAVA software, analyzing JVM codes in the .class files, drawing fragments of the codes at random, replacing the original position of the drawn fragments of the codes with call of a native method, and generating a derivative function in the local dynamic chained library file to achieve the function of drawing the fragments of the codes. By means of the method, the codes and logic of the JAVA software are effectively prevented from being reversed and broken, and the safety strength of the software is improved.

The invention discloses a specification method of harmful program based on the virus attack identification base of state movement set, which comprises the following steps: 1.1) monitoring and recording the movement behavior of unknown program; 1.2) integrating the recorded program to compare with the virus identification regular base; 1.3) judging the compared result whether the result is harmful program behavior; alarming or stopping the operation of program if yes; continuing operating and returning to the step 1.1) if not. The invention analyses the unknown program behavior without depending virus code, which improves the efficiency and precision.

The invention discloses a control method and a control device of a cache resource of a shared cache type Ethernet switch, and relates to the communication field. The method includes following steps: receiving a data package and simultaneously performing hash calculation, then obtaining a flow index of the data package, and retrieving a data flow array according to the flow index to obtain flow information; retrieving a queue array according to a queue index to obtain the length of a current queue and a flow number of the queue; updating a used cache variable value of the flow information according to the length of the data package; carrying out different judging treatments of different flow behaviors according to a comparative result of an occupied cache value and a current credit value of the flow information with an average cache value, an attack flow credit threshold value, an attack flow cache value of a system; and updating the used cache value, the current credit value, an active flow count of the queue, the length of the queue in the flow information after forwarding the data package. The control method and the control device of the cache resource of the shared cache type Ethernet switch can respond timely according to a current use condition of the cache, discover an attack behavior rapidly, prevent the attack behavior from consuming the cache resources, and control network congestion effectively.

The invention discloses a domain name resolution method, a DNS (Domain Name Server) server and a system. The method comprises the following steps of: after the DNS server receives a domain name resolution request initiated by an accessed user, a corresponding DNS response message is obtained; when the obtained DNS response message is a disconnected DNS response message based on a UDP (User Datagram Protocol), a value of a specified zone bit is set in the DNS response message to generate a DNS response message after change; after the value of the specified zone bit is set to indicate that the accessed user receives the DNS response message after change, the domain name resolution request initiated in a TCP (Terminal Control Protocol) mode is cancelled and the DNS response message after change is returned to the accessed user. By adopting the scheme, the domain name resolution search based on the TCP mode is avoided, therefore, the system can not be attacked by the TCP mode, the DDOS (Distributed Denial of Service) attack resisting capability of the system is effectively increased, and the domain name resolution efficiency of the system is improved.

The invention discloses an anti-flavivirus envelope E protein monoclonal antibody and application thereof. The anti-flavivirus envelope E protein monoclonal antibody of the invention is secreted by a mouse source hybrid tumour cell strain D2-2A10G6 with the preservation number of CGMCC No. 3292. The anti-flavivirus monoclonal antibody of the invention can be specifically combined with the function epitope of flavivirus envelope E protein. The amino acid sequence of the functional epitope of envelope E protein is SEQ ID NO: 17. The monoclonal antibody of the invention is subject to screening by indirect immunofluorescent method, and indirect enzyme-linked immunization is used for evaluating the specificity and affinity when being combined with antigen. By adopting the monoclonal antibody or immunoconjugate of the invention, flavivirus infection cell can be blocked and suckling mouse can be protected from virus attack, thus achieving the effect of inhibiting virus infection. The monoclonal antibody or immunoconjugate of the invention also can be used for flavivirus envelope E protein detection.

A release layer paste used for producing a multilayer type electronic device and forming a release layer of a thickness of 0.05 to 0.1 μm, used in combination with an electrode layer paste including one or more solvents selected from limonene, dihydroterpinyl methyl ether, α-terpinyl acetate, terpinyl methyl ether, isobornyl acetate, caryophyllene, 1-dihydrocarvyl acetate, menthone, menthyl acetate, perillyl acetate, carvyl acetate, d-dihydrocarvyl acetate, and butyl carbitol acetate and a binder comprised of ethyl cellulose, including a ceramic powder, organic vehicle, plasticizer, and dispersion agent, the organic vehicle containing a binder having polyvinyl acetal as its main ingredient, a ratio (P/B) of the ceramic powder with respect to the binder and plasticizer being controlled to 1.33 to 5.56 (however, excluding 5.56).

The utility model provides a safety cover, belonging to the field of electronic circuit protection , used for covering a protected area of a protected circuit board and providing protection for the elements in the protected area. The safety cover comprises a flexible circuit board which can be folded up to form a holding space with an opening on a side of the holding space and the flexible circuit board covers the protected area of the protected circuit board, covering the elements of the protected area; wherein, the flexible circuit board can trigger a circuit to erase or damage the message on the elements of the protected area when the flexible circuit board is under physical attack. The utility model has the advantages that protecting the important elements from suffering attack by covering the important elements of the circuit board via the flexible circuit board with a holding space.

The invention relates to the technical field of chemical pigment fabrication and discloses a high-temperature-resistant environment-friendly composite pigment and a production method thereof. Inorganic titanium yellow pigment carriers are enveloped with organic yellow pigments to form the composite pigment. The preparation method comprises processing titanium dioxide and nickel oxide into mixed-phase inorganic titanium yellow pigment carriers to be mixed with organic yellow pigments with negative charges, and performing enveloping treatment through positive and negative charge particle attraction action to achieve composition of organic and inorganic pigments. By nanometer fine processing, surface charges are increased, the envelop is dense, the structure force is large, the composition process is environmentally friendly, the composite pigment is non-toxic, the composite titanium yellow carriers can protect the sensitive organic pigments from ultraviolet attack like ultraviolet absorbers, and accordingly, the weather resistance and the light resistance of the pigment are improved greatly, and the pigment has the advantages of being environmentally friendly, weather resistant, light resistant, heat resistant, anti-ageing, bright in organic pigment color and high in tinting strength.

The invention discloses a defense method aiming at SSL strip attack and based on historical information. The defense method includes: establishing detection rules, and creating configuration files of all safe sites browsed by a user through the detection rules, wherein each configuration file contains accurate using status of the corresponding site; defaulting that an attacker successfully realizes MITM (man in the middle), establishing a MITM detector, and using the configuration file and the detection rules, wherein once a page is tampered maliciously by the MITM, a system can recognize and inform the user of a network attack while stopping connection of the attacker; establishing a private data tracking module, inserting JavaScript code into a login page, and detecting whether a login request contains plaintext private information or not to completely eradicate leakage of private information. By detecting client requests and server response content, the user can be protected from the SSL strip attack, and certificate of the user can be protected from being stolen by illegal means, so that safety and reliability when the user accesses websites are improved.

The invention relates to an embedded Linux multimedia information collection processing device and relative transmission method. Said device comprises: an embedded server, several client terminals and a cloud platform, wherein, said embedded server and cloud platform are connected via the RS485 bus; the embedded server and the client terminal process interactive control and data transmission via the RTP/RTCP to use the RSVP to realize QoS resource preparation. The invention uses safety strategy to prevent the impact on the server to confirm the safety of server authorization and safety of flow media in the network transmission. The network self-adaptive strategy of user terminal can make said device realize the balance between the band width process and the replay possibility when transmitting data in limit network. The invention can apply the remote control area, especially the unattended remote area to apply stable real-time interactive acoustic-virtual detection.

The invention discloses a scene self-adaptive smart window based on multiple sensors. The smart window is composed of a single-chip microcomputer, a stepping motor module, multiple sensor modules including a raindrop sensor, a temperature and humidity sensor, a smog sensor, an air quality sensor and a human body pyroelectric infrared sensor, a human-computer interaction module, an alarm module, apower supply module, a window cleaning module, an infrared transmission module, a clock module and an air humidifier. According to the scene self-adaptive smart window, the rich functions of automatically opening and closing the window when it rains, discharging out indoor harmful gas in time, avoiding outside air pollution, achieving invasion short-message warning, achieving manual and automaticmode switching, displaying time, air quality and temperature information in real time, controlling startup and shutdown of an air conditioner and the air humidifier to adjust the indoor environment, collecting rainwater to clean the window and the like can be achieved; and a solar panel is matched with a mobile power source for supplying power to a whole system, energy is saved, meanwhile, the trouble of grooving wiring is omitted, and convenience of mounting of the smart window is increased.

The invention discloses a gene synthesis of Alpha-interferon of wild boars and vector construction thereof as well as a production method of a product. A number of problems of low expression capacity, products expressed in a fusion state, products with purification tags or no fermentation technology with high density exist in the domestic recombinant strains. The invention includes a method that a codon and codon pairs, preferred by Escherichia coli, are used for synthesizing an Alpha-interferon gene of the wild boar, establishing a high-efficiency expression vector and transforming a high-efficiency expression strain as well as methods of high-density fermentation of engineering bacteria, separation and purification of inclusion bodies, the modification, the renaturation and the purification of target protein and the determination of biological activity of the expressed product. The gene synthesis, the vector construction and the production method pertain to the technical field of the production of polypeptide drugs by genetic engineering in biopharmaceuticals.

The invention relates to a self-repairing antibacterial chitosan hydrogel and a preparation method thereof, the self-repairing antibacterial chitosan hydrogel is characterized in that the hydrogel is a self-repairing antibacterial hydrogel, the preparation method of the self-repairing antibacterial hydrogel comprises the following steps of: (1) reacting carboxymethyl chitosan with gallic acid to obtain a soluble carboxymethyl chitosan gallic acid derivative, wherein the molar ratio of gallic acid to carboxyl on carboxymethyl chitosan is 1:1-10:1; and (2) mixing an aqueous solution of the carboxymethyl chitosan gallic acid derivative with a FeCl3 solution according to a concentration ratio of 5:1-20:1 to obtain the self-repairing chitosan hydrogel, wherein the pH value of the mixed solution is 5-10. According to the invention, the intelligent hydrogel with self-repairing performance is synthesized in a short time through the interaction of dynamic metal ligands. In addition, the hydrogel also shows excellent antibacterial performance, and the antibacterial rate is increased along with the increase of the content of the carboxymethyl chitosan gallic acid derivative.

The invention discloses a nasal spray immunity flu polyvalent vaccine and a preparing method. Flu quadrivalence (H1N1, H3N2, H5N1, B type) or polyvalent attenuated live vaccine is used for immunoprophylaxis through nose spraying, popular flu and highly pathogenic avian influenza can be prevented safely and efficiently.

The invention discloses a preparation method and a special culture medium of veterinary D-type clostridium perfringen toxin. The culture medium per 100ml comprises the following components: 1-1.5g soy peptone, 1-1.5g casein peptone, 0.5-0.75g yeast extract, 0.5-0.75g Na2HPO4.12H2O, 1-1.5g dextrin and the balance of water, wherein a pH (potential of hydrogen) value of the culture medium is 8.0-8.5. The preparation method of the D-type clostridium perfringen toxin comprises the steps of inoculating a D-type clostridium perfringen production strain into the culture medium, collecting a culture material, performing centrifugation, and then filtering a supernate. With the adoption of the method, the maximum toxicity can be improved to be 45 times a seedling standard in Regulations on National Veterinary Biological Products, and an output-input ratio can be increased to be 30-225 times that of the original traditional technology. In addition, corresponding serum neutralization titer of a toxoid vaccine prepared by the D-type clostridium perfringen toxin on a rabbit and a sheep is also improved to be 8.3 and 13.3 times a regulation standard respectively.

The invention relates to a multifunctional gas bead gel coat, which comprises sleeves(10), a collar(20) and a body(30) and is made of airtight fabric(1) and a plurality of air sacs(2) made of the same material as the airtight fabric and arranged at the lower side of the airtight fabric(1) and combined with airtight fabric(1) as a whole body, wherein, the airtight fabric(1) and the air sacs(2) are made of flame retardant adhesive film. The invention is characterized by the anti-wind, anti-rain, anti-snow, anti-hail, anti-stumbling, anti-drowning functions , and especially being suitable for being used as winter clothing, raincoats, learning swimsuits, lifejackets, and ski-wear of children. If a metal film is added at the side next to the human body, an effect of insulation is increased; by using double-sided glue paper, the cutting method of the invention includes: at first, the fabric is fixed on a cutting bed; then the double-sided glue paper is stuck between the upper layer of the fabric and the lower layer of the fabric to form a multilayer; at last, a cutting paperboard sample is stuck at the top layer of the fabric and the fabric is cut according to the sample; tablet fabrics which are cut are blended and welded into the coat by a welding machine. The method has the advantages of simple operation and low cost.