34results about How to "One-way" patented technology

The invention discloses a symmetric hash based irreversible fingerprint template encryption method, and belongs to the technical field of fingerprint identification and encryption fusion in mode identification. A symmetric hash function is combined with a sine cosine function to ensure the irreversibility of hash operation strictly and improve the security of the whole encryption algorithm. The number of equation sets of the constructed hash function is lower than that of input, namely, a rank of a inhomogeneous equation set coefficient matrix equals that of an augmented matrix and is lower than the number of the equation sets, the equation sets include infinite solutions theoretically, and input data information cannot be obtained by an inversion method. In addition, output of the sine cosine function corresponds to the characteristic of infinite multiple input, so that the irreversibility of the method is further improved. An original fingerprint of a user cannot be obtained by inversion even if an attacker steals a secret key and template of the user. In the process of hash operation, a secret key manner of the user is combined in a simple and more efficient way, and the cancellation performance is higher.

The invention provides an operational amplifier. The operational amplifier is characterized by comprising an input structure, a feedback network, an output structure and a bias network, wherein the input structure comprises an NMOS (N-channel metal oxide semiconductor) input operational amplifying circuit and a PMOS (P-channel metal oxide semiconductor) input operational amplifying circuit; the feedback network comprises an NMOS feedback loop connected with the NMOS input operational amplifying circuit and a PMOS feedback loop connected with the PMOS input operational amplifying circuit; the NMOS feedback loop and the PMOS feedback loop are used for ensuring the current of transistors to depend on the input voltage and the input end resistance under the condition that the input voltage Vi is greater or smaller than the reference voltage Vref; the output structure is used for amplifying signals transmitted by the input structure; and the bias network is used for supplying power to the input structure, the output structure and the feedback network simultaneously. The operational amplifier has the following beneficial effects: the reference voltage is set and the operational amplifier feedback loops with high gains are adopted; the current in the transistors has unipolarity, so good linear transconductance can be obtained; and meanwhile, a large dynamic voltage input range (from the ground to the power voltage) is realized.

The invention relates to a vehicle infrastructure cooperative security communication method based on hash encryption. The method comprises the following steps: step 1), mixing connection request information and a PIN code into a secondary character string by an information sender, wherein the PIN code is a unique identification code corresponding to the information sender; step 2), performing hash encryption on the secondary character string, and generating a corresponding hash value; and step 3), maintaining a database that stores multiple hash values by an information receiver, after receiving the hash value in step 2) by the information receiver, traversing to find the database, and judging whether the received hash value is valid; if yes, then establishing a secure communication connection with the information sender; otherwise, refusing the connection. Compared with the prior art, the vehicle infrastructure cooperative security communication method based on the hash encryption provided by the invention has the advantages of being high in security, and capable of realizing access control and so on.

The invention discloses a multi-signature method and apparatus. The method comprises the following steps that: a signature at an Lth layer is obtained, wherein the L is an integer that is larger than or equal to 1 and the signature at the Lth layer is a small norm vector; a multi-signature secret key of a signature at a (L+1)th layer is determined, wherein the multi-signature secret key of the signature at the (L+1)th layer is a small norm matrix; and according to the signature at the Lth layer and the multi-signature secret key of the signature, a signature of the (L+1)th layer is determined. According to the multi-signature method and apparatus provided by the embodiment of the invention, on the basis of the small integer solution (SIS) difficulty problem at the lattice, the signature and the multi-signature unit are set as the small norm vectors at the lattice and the multi-signature secret key is set as the small norm matrix at the lattice, so that signatures at all layers can be generated by using the same algorithm. The algorithm is simple and effective; the security is high; the method has the unidirectionality and irreversibility; the corresponding verification cost is low; and the user experience is improved.

The invention relates to a method for carrying out chaotic encryption based on particle travelling, comprising the following steps of: (1) initializing: randomly generating or setting initial parameters according to given information, wherein the initial parameters comprise a reflection container parameter, an initial position, a running speed, running time and a running direction; and (2) computing a track by iteration based on the initial parameters and a reflection law to obtain the final collision position and direction and realize the encryption of the data. The method provided by the invention has the advantages of simplicity in operation, sensitivity on the initial parameters and unilateral directivity of a chaotic encryption algorithm, so that the method can be widely applied to information safety of encrypted data, secret communication and the like.

The invention discloses an upward-sloping drainage structure with a self-anchoring function. The upward-sloping drainage structure with the self-anchoring function comprises an anchor pipe main body,a water stop body and a grouting pipe; the anchor pipe main body comprises a steel pipe body and a spiral cutter edge; the steel pipe body is divided into a drainage section, a water stop section, ananchoring section and a pile tip which are connected in sequence in the axial direction; a plurality of drainage holes are formed in the pipe wall of the drainage section; a water filtering body is placed in the pipe cavity of the drainage section; a plurality of grouting holes are formed in the pipe wall of the anchoring section; the spiral cutter edge is arranged on the outer pipe wall of the anchoring section in a surrounding manner in a spiral strip shape; the water stop body comprises an inner water stop body and an inner water stop body; the inner water stop body is arranged in the pipecavity of the water stop body; the outer water stop body is arranged on the outer pipe wall of the water stop section annularly; the grouting pipe is arranged in the pipe cavity of the steel pipe body; one end of the grouting pipe is positioned in the anchoring section; and the other end of the grouting pipe penetrates through the inner water stop body and extends out of the end surface of the drainage section. Meanwhile, a matched construction method is provided to simplify the draining and anchoring operation in slope protection, facilitate construction, shorten the working period and reducethe cost.

The invention discloses an SIP security authentication method and system based on an on-loop error learning problem, and the method comprises the steps: a user client U encrypts a password PW to obtain encrypted data PWE, and transmits a user name ID, the encrypted data PWE and a verification key to a server S; the server S receives the user name ID and the encrypted data PWE sent by the user client U, and encrypts the received data to obtain encrypted data VPW; the U sends a verification request to the S; the S uses the verification key to process the encrypted data VPW to obtain a first verification message; and the server sends the first verification message to the U; after the U receives the first verification message, the user client verifies the first verification message, and if theverification is passed, the client returns a second verification message to the server S; and the server S verifies the second verification message, and if the second verification message passes theverification, the client U and the server S use a common session key to encrypt the communication information.

The invention discloses a robot suitable for an inner wall of an oil-immersed transformer and capable of achieving electromagnetic adsorption and climbing. The robot comprises an electromagnetic adsorption type robot and a remote controller, the electromagnetic adsorption type robot is in communication connection with the remote controller, and the electromagnetic adsorption type robot is providedwith a fault camera system. The robot is small in size and can go deep into the transformer for observation; the robot has an electromagnetic adsorption capacity, can be adsorbed on a wall surface and overcomes gravity to realize climbing; the robot adapts to a complex special environment in the transformer, and can flexibly climb over prominent structural obstacles; a high-definition universal camera is carried so that a fault type and a position of the transformer can be accurately judged; remote control is achieved, and pollution to the transformer due to personnel entering is avoided; thestructure is reasonable and the performance is reliable; and a workload of maintainers is reduced, and working efficiency is improved.

The invention provides a hand-operated type high-rise lifesaving device capable of lifting in a self-controlled mode, and the hand-operated type high-rise lifesaving device can manually lift in the self-controlled mode. Staff on a high building can be safely rescued without depending on a power supply when a disaster happens. A lifting device comprises an assembly housing, a lifesaving hanging basket, a lifesaving rope and the like, wherein a transmission mechanism fixing frame is fixedly arranged inside a lifting device assembly housing; a transmission gear group and a lifesaving rope friction wheel group are arranged on the fixing frame; and gears in the transmission gear group are coaxially connected with friction wheels in the lifesaving rope friction wheel group correspondingly. One of the lifesaving rope friction wheels is coaxially connected with one of the transmission gears and a transmission worm; the transmission worm is engaged with worm wire teeth through wheel teeth; and the worm is connected with a hand-operated handle by passing through the assembly housing. The lifesaving rope passes through gaps among the friction wheel group and penetrates through the middle part of the lifting device assembly housing. The two ends of the lifesaving rope are connected with safety hooks which can be hooked on the high building. The lifesaving hanging basket is connected with a fixed ring on the lifting device assembly housing through the rope. In use, one end of each safety hook is fixedly arranged on the high building, a passenger stands in the lifesaving hanging basket, and the handle is operated by hands to be controlled to lift, so that safe lifesaving is realized. The hand-operated type high-rise lifesaving device capable of lifting in the self-controlled mode is simple in structure, is convenient to operate, and is safe and reliable.

The invention discloses a code responsibility investigation method based on a block chain technology. The method comprises the following steps: encrypting collected N groups of code related data containing corresponding programmer information by adopting an enterprise private key to generate corresponding data packets, sending the data packets to an authentication institution, and verifying the enterprise information to which the data packets belong and the programmer information corresponding to each group of code related data contained in the data packets by the authentication institution; if the verification is passed, enabling the certification authority to digitally sign the data packet and transmit the data packet back to the enterprise; and after hash processing is carried out on the data packet digitally signed by the certification authority, uploading the data packet and the enterprise public key to a P2P network together for node verification, and if the verification is passed, packaging the data packet and sending to the blockchain through the node. The invention can provide a code tracing system model for increasingly programmed society, and has the characteristics of reliability, credibility, decentralization and privacy and confidentiality protection.

The present invention discloses a language card, and relates to the electronic field. The language card comprises a word-to word card, a word-to-pronunciation card, a pronunciation-to-word card and apronunciation-to-pronunciation card. The language card is characterized in setting of a corresponding relation. The corresponding relation is set in that: the corresponding relation can express the same thing, can express the same meaning, can express similar or opposite meanings, explanation, word combination and sentence making, can be extended and even can be a corresponding relation defined bytwo things having no corresponding relation by a user himself; the corresponding card is established to establish a corresponding relation between words and pronunciation, a language card is established to combine things except the words and the pronunciation with the words and pronunciation to establish a connection therebetween so as to create a condition for conversion of two things and establish a wider language card.

The invention discloses a distributed data transaction payment method. The distributed data transaction payment method is as follows: an application party requests data M from a data party; after the data party obtains the data M required by the application party, a random symmetric key K is generated; the data party performs hash calculation on the symmetric key K to obtain a key abstract e; the data party performs symmetric encryption calculation on the data M by using the symmetric key K to obtain encrypted data ME; the data party sends the key abstract e and the encrypted data ME to the application party; the application party pledges assets at the notarization party and sets timeout time; the data party sends a symmetric key to the notarization party, and the pledged assets are transferred to the data party; the application party obtains data M from the notarization party; according to the invention, in a specific scene, the data party and the application party carry out data payment transaction through the notarization party, and the notarization party completes verification on the premise of not obtaining data, so that the security of the transaction and the confidentiality of the data to the notarization party are both considered.

The invention belongs to the technical field of heating smoking sets, and particularly relates to an electric heating smoking set with a movable inner smoke cup, a fuming system and a using method thereof. The electric heating smoking set comprises an inner cigarette cup (10) and an outer cigarette cup (20). The inner cigarette cup (10) is formed by combining a plurality of components, the combined whole is of a hollow cylinder structure, the bottom of the inner cigarette cup (10) is sealed, and the outer wall of the inner cigarette cup (10) is provided with point-shaped protrusions (13). The outer cigarette cup (20) detachably surrounds the periphery of the inner cigarette cup (10) by means of matching of the clamping grooves (21) and the point-shaped protrusions (13). After the inner cigarette cup is inserted into the outer cigarette cup, the smoke generating section of the cigarette can be sealed by the inner cigarette cup. In the smoking process, the oxygen content in the smoking set can be reduced, so that the heating temperature can be greatly increased, aroma components in tobacco can be released more sufficiently, the taste is closer to that of traditional tobacco, and the smoking set is easier to accept by traditional smokers.