812results about How to "Avoid risk of leakage" patented technology

The invention discloses a pressure cooker which comprises a cooker body, a lid integrated component, a lid assembly and a first locking component. The lid integrated component is pivotally connected onto the cooker body, the lid assembly is rotatably arranged on the lid integrated component along the peripheral direction of the cooker body and comprises a lid, a trigger assembly and a buckle device, the lid is connected with the lid integrated component by the buckle device, the trigger assembly is connected with the buckle device and is structured in such a manner that the buckle device can be released when the trigger assembly is triggered, and accordingly the lid can be separated from the lid integrated component; the first locking component is arranged on the lid integrated component, the buckle device can be driven by the trigger assembly to rotate between a first location and a second location relative to the lid integrated component, the trigger assembly can be triggered when the buckle device is positioned at the first location so as to relieve the buckle device, and the lid assembly and the lid integrated component cannot be detached when the buckle device is positioned at the second location. The pressure cooker in an embodiment of the invention has the advantage that the service safety of the pressure cooker can be improved.

The invention discloses a database information encryption method and a database information encryption system using the same, which belong to the technical field of information security. The method comprises the following steps of: encrypting a sensitive field in a datasheet through a cryptoequipment unit, and creating a homonymous view which points to the encrypted datasheet for the sensitive field; maintaining the use permission of a user to a key, and encrypting the used cryptoequipment unit, an encryption mode and the key; allowing a user with the permission to successfully read and modify encryption information; and for a user without the permission, using a random key for error decryption when the encryption information is read, and returning key acquisition failure information when the encryption information is modified. The system comprises a security management host and one or more database server hosts, and is provided with an abstract cryptoequipment module for providing a uniform encryption and decryption interface and calling one or more different cryptoequipment units to realize the encryption and decryption. The database information encryption method and the database information encryption system can be used for the encryption of database information.

An invasive cardiac valve comprises a tubular stent (1) and a valve (2). One end of the tubular stent (1) is of a frusto-conical structure, the other end is wide open, and the diameter of the open end is greater than the diameter of the frusto-conical end. The valve (2) is attached to the frusto-conical end of the tubular stent (1); and a delivery and retrieval hole (4) of the cardiac valve is provided at the top of the open end of the tubular stent (1). Because the diameter of the open end is greater than the diameter of the frusto-conical end, the cardiac valve can be effectively fixed in a position of aortic annulus to prevent the cardiac valve displacement caused by the impact of the blood flow. Because the valve (2) is attached to the frusto-conical end of the tubular stent (1), the valve (2) can totally avoid the left and right coronary ostia and does not affect the haemodynamics of the coronary artery. Because a delivery and retrieval hole (4) of the cardiac valve is provided at the top of the open end of the tubular stent (1), the cardiac valve can be retrieved and reset at any time by handle control if it is found to be placed in an improper position during the release process.

The invention provides a hospital information supervision platform and method. The hospital information supervision platform comprises a distributed block chain network constructed by adopting a plurality of data source parties and one or more data application parties as supervision nodes and further comprises a block chain key generation module, a distributed storage module and a sensing prompting module. The block chain key generation module adopts the block chain technology for enabling medical key information of the supervision nodes in the distributed block chain network to generate corresponding block chain keys through an encryption algorithm; the distributed storage module stores the block chain keys into all the supervision nodes of the distributed block chain network; the supervision nodes are communicated in the distributed block chain network; if medical key information of any supervision node is modified, the corresponding block chain key changes, and the other supervision nodes can sense the changes and give a prompt. The platform achieves multi-point self-supervision and intelligent prompting, the medical key information safety management cost is lowered, and the medical key information of a hospital can be prevented from being modified improperly.

The invention discloses a federated learning method, device and system based on gradient compression. A federated server sends initial models to clients in a unified mode; the initial model is trainedby the client to obtain an updated gradient, the updated gradient is quantized to obtain a quantized gradient of the updated gradient, and the quantized gradient of the updated gradient is sent to afederated server; the federated server performs quantity statistics according to different quantized values in the quantized gradients based on all the quantized gradients corresponding to each clientto obtain a statistical result, and returns the statistical result to each client; and the client receives the statistical result sent by the federated server and calculates a global updated gradientaccording to the statistical result so as to continue model training according to the global updated gradient. The objective is to solve the problems of high network transmission overhead and unsafedata in an existing federated learning system.

The invention relates to a mobile payment system based on a bank virtual card number. The mobile payment system based on the bank virtual card number comprises a payment device, a card issuing bank server, a third party payment server, a POS (machine point of sale machine), an acquiring bank server, a card organization server, a commercial tenant server and a BVA SP server, wherein the payment device generates the bank virtual card number used as a primary account number of a payment request or a transfer request, a payment request is sent to the card issuing bank server through transfer transmission of the POS, the acquiring bank server and the card organization server or a transfer request is sent to the card issuing bank server through transfer transmission of the BVA SP server, the card issuing bank server completes transfer or payment, and when the payment device uses a third party payment server for the payment, the card issuing bank server is communicated with the third party payment server through the transfer transmission of the BVA SP server, and completes the payment or the transfer after the payment request or the transfer request is verified. Compared with the prior art, the mobile payment system based on the bank virtual card number has the advantages of improving mobile payment safety, being strong in compatibility, facilitating operation of a user and the like.

The invention discloses an anonymous express information security system based on a two-dimension code. The system comprises a key management subsystem and an express information management subsystem; the key management subsystem is used for distributing and managing the subsystems of system participants and is constructed by using an attribute based encryption technique; the express information management subsystem mainly comprises five entities of a sender, a receiver, a deliverer, a package and a database; the sender sends the package to the receiver through the deliverer; the tag on the package is used for identifying partial public information of the sender and the receiver; and the database is used for recording related package and the secret information of the sender and the receiver. According to the system of the invention, the information leakage problem possibly generated in the goods delivery process is taken into full consideration; all secret information not just the list number is hidden; the information security is ensured greatly; and the information leakage risk is avoided.

The invention discloses an authentication method based on homomorphic encryption. The authentication method comprises the following steps: generating a secret key and a public key of a homomorphic encryption algorithm for a user; storing the secret key in mobile storage equipment; collecting original biological features of the user, encrypting the original biological features by using the public key to generate the original biological feature ciphertext; and sending the original biological feature ciphertext to store in an authentication server, thereby accomplishing the registration; collecting the current biological features of the user, and encrypting the current biological features by using the homomorphic encryption algorithm to generate the current biological feature ciphertext; sending the current biological feature ciphertext to the authentication server, requesting the authentication under the ciphertext state, and acquiring the secret key in the mobile storage equipment, decrypting the authentication information by using the secret key and sending the decryption result to the authentication server. Through the adoption of the method disclosed by the invention, the biological features are authenticated under the ciphertext state, the strong safety guarantee is provided, and the biological feature information leakage of the user is avoided.

The invention discloses a wireless charging control method and a wireless charging device which adopts the wireless charging control method. The wireless charging device comprises a processing unit, an array of a plurality of charging units and an array of a plurality of positioning sensor units which correspond to the charging units. The method comprises the following steps: the array of the positioning sensor units detects the relative position of electronic equipment and the charging units to acquire relative position information and sends the relative position information to the processing unit; the processing unit judges charging units which meet predetermined conditions in the array of the charging units based on the received relative position information to generate a charging order and transmits the charging order to the charging units which meet the predetermined conditions; the charging units which meet the predetermined conditions charge the electronic equipment according to the charging order.

The invention relates to an authentication method and an authentication system among mobile devices. The authentication method includes that after selecting an initiator account number, an initiating device obtains a first authentication token for mobile payment, identity authentication and ticket verification through an encryption method and sends the first authentication token to a receiving device; after selecting a receiver account number, the receiving device encrypts to generate a second authentication token on the basis of the first authentication token and forwards the second authentication token to a credible bank service manager server; the credible bank service manager server is communicated with a corresponding primary account number manager server or a secondary account number manager server according to content of the second authentication token to obtain a fed back authentication request verification result, generates a second authentication token verification result and forwards the second authentication token verification result to the initiating device, the receiving device and the primary account number manager server or the secondary account number manager server corresponding to the receiver account number. Compared with the prior art, the authentication method and the authentication system have the advantages that mobile authentication safety is enhanced, mobile authentication compatibility is increased, user experience is improved and the like.

The invention provides a cold and hot integrated box body structure comprising a main body of a box body with an upper opening, wherein the main body of the box body comprises a bottom plate and a side plate, the bottom plate and the side plate are used for constituting an accommodation cavity for accommodating a battery, a liquid cooling system and a heating system are alternately distributed in the bottom plate, at least one fluid inlet and at least one fluid outlet communicated with the liquid cooling system are formed in the side plate, the liquid cooling system is cooling fluid flow channels distributed in the bottom plate in a snake shape, the heating system comprises a first hollow cavity arranged between cooling fluid flow channels and a heating device padded in the first hollow cavity, and a flow channel bridge used for changing the flow direction of the fluid is arranged at the reserving site of the cooling fluid flow channel. According to the box body structure provided by the invention, the liquid cooling system, the heating system and a heat insulation system are highly integrated with the section bar box body, thereby improving the weight energy density ratio and the volume energy density ratio of the battery and reducing and even eliminating the fluid leakage risk of the cooling fluid.

The invention discloses a lightweight security authentication and key exchange method for narrow-band internet of things. The communication main body comprises a terminal and a server. Before the communication is established, the root key is shared between the terminal and the server, and the two-way authentication is realized by adopting a challenge-response interaction mechanism based on a symmetric cryptosystem. The present invention mainly solves the problem of the two-way identity authentication and key exchange between the terminal and server in the Internet of Things application systembased on NB-IoT and other narrow-band Internet of Things connection technologies, can realize lightweight security authentication algorithm, protocol and key agreement mechanism, and meet the design requirements of low power consumption, low bandwidth consumption, low interaction frequency and high security.

The invention discloses an intelligent traffic path planning method based on federated learning and digital twinning. The method comprises the following steps of: S1, carrying out vehicle registration in a vehicle system, and verifying the identity information of vehicles; S2, according to the local historical data of the vehicles, participating in federated learning, and training a local model; S3, aggregating the local models of all the vehicles to obtain an aggregation model; S4, judging whether the aggregation model converges to preset precision or exceeds a time limit or not, if yes, entering the step S5, and otherwise, returning to the step S2; S5, establishing an Internet-of-vehicles global digital twinning model; S6, periodically updating the Internet-of-vehicles global digital twinning model; and S7, initiating a path finding request to a roadside unit, and updating the optimal path and the local prediction model in real time. The planning method provided by the invention is applied to the field of Internet of vehicles, so as to solve the problems of low flow prediction and path planning accuracy, high time delay and privacy leakage risk in the current road traffic system.

The invention discloses a softphone encryption and decryption method and device and a computer readable storage medium. The method comprises the steps of: when receiving a softphone calling instruction, acquiring a phone number corresponding to the calling instruction, and carrying out encryption on the phone number to generate a ciphertext phone number; sending the ciphertext phone number to a phone platform server, so that the phone platform server returns the ciphertext phone number to a local system server by a special network; and carrying out decryption on the ciphertext phone number bythe local system server to obtain a cleartext phone number, and sending the cleartext phone number to the phone platform server by the special network. According to the scheme, both phone number encryption and decryption for a softphone are carried out by the local system server, and a secret key does not need to be sent to the phone platform server, and thus, security is high, and the case that the secret key is intercepted in the transmitting process is avoided; and the decrypted phone number is sent to the phone platform server by the special network, so that the leakage risk is further avoided, and security of personal information of a client is ensured.

The invention discloses a cloud stored data encrypted transmission method which comprises the steps of: receiving a transaction request which is initiated by a first user and aims at one encrypted file stored on cloud storage equipment and a public key of the first user; sending the public key of the first user to a second user, so that the second user utilizes the public key of the first user anda private key of the second user to calculate to obtain a re-encrypted key; acquiring the re-encrypted key from the second user, and recording preset type information of the encrypted file; and sending mapping relationship data between the re-encrypted key and the preset type information of the encrypted file to the cloud storage equipment, so that the cloud storage equipment utilizes the re-encrypted key to re-encrypt the encrypted file and generates a corresponding re-encrypted file for the first user to acquire the re-encrypted file and decrypt. The invention further discloses a smart contract system, cloud storage equipment and a storage medium. According to the invention, the risk of data leakage in the data file transaction process, which is caused by the mutual trust problem, can be effectively avoided.

The invention provides a beauty data storage system based on a block chain. The beauty data storage system based on a block chain comprises a public block, a private block and a confidential block chain, wherein the public block is used for storing diagnosis and treatment operation and diagnosis and treatment information; the private block is configured to store a patient personal diagnosis and treatment record; the confidential block chain is configured to be used for verifying identities of the public block and the private block; and both the public block and the private block are connectedwith the secret chain. Personal information of a patient is stored by adopting a private block chain, so that the risk of leakage of traditional electronic archive information is overcome, and sensitive personal information of the patient is protected, and the worry that the patient worries about plastic surgery information leakage is solved.

The invention discloses a passive outboard cooling system suitable for an underwater platform, and relates to the field of underwater platform cooling systems. The passive outboard cooling system suitable for the underwater platform comprises a passive heat exchanger and a fresh water circulating pipeline. The passive heat exchanger is arranged outside the board and vertically arranged in the region which is located between a pressure-resistant shell and a light shell. The fresh water circulating pipeline is arranged in a cabin. The passive heat exchanger comprises heat exchange tubes, a firstwater collecting chamber and a second water collecting chamber. The first water collecting chamber and the second water collecting chamber are connected with a water inlet and a water outlet formed in the light shell through connecting pipes correspondingly, and filtering screens are installed in the water inlet and the water outlet. A shell of the passive heat exchanger is connected with a firstcabin penetrating part and a second cabin penetrating part. The fresh water circulating pipeline is formed by a water tank, a fresh water pump, cooling users, valves and pipelines through connection.One end of the fresh water circulating pipeline is connected with the first cabin penetrating part, the other end of the fresh water circulating pipeline is connected with the second cabin penetrating part, and the fresh water circulating pipeline and the passive heat exchanger are combined to form a closed loop. The occupation of the space in the pressure-resistant cabin is reduced, the risk ofleakage of seawater pipelines is avoided, and the system energy consumption and the noise are reduced.

The invention relates to a system with the support of the mobile payment of a social security card. The system comprises a hospital network service system, a third party payment platform and a medicalinsurance platform. The hospital network service system comprises an HIS hospital information management system and a mobile medical platform. The system can be conveniently and quickly connected tothe medical insurance of a mobile terminal, the real-time card-free settlement of medical insurance costs is achieved, and the payment of medical insurance reimbursable funds is not needed. At the same time, the development of a dedicated payment platform is not needed, the security of payment transactions can be ensured, the safety of each transaction is ensured to ensure the property security and information security of a user, and thus the user experience is improved at the greatest extent.

The invention provides a social privacy protection method of a multi-level attribute management center based on characteristic encryption. A friend making sponsor uploads encrypted personal information files to a remote friend finder, and a certain kind of user-defined attribute characteristics and a friend making access control strategy are uploaded to the multi-level attribute management center; the multi-level attribute management center generates ciphertext according to the attribute characteristics and is associated with an access strategy tree corresponding to attributes; a friend making requester requests for checking friend making information of other users in the friend finder, when an attribute set of the friend making requester is matched with the access strategy tree of the friend making sponsor, the multi-level attribute management center sends a secrete key corresponding to the attribute of the friend making sponsor to the friend making requester, and the friend making requester decrypts data ciphertext of an information owner of the friend finder. The method solves the single-point fault and performance bottleneck problems of a single-authorization center, and also solves the problems that an intelligent terminal does not depend on an authorization center and accordingly monitoring difficulty is high and application scenes are limited.

The invention discloses a cross domain login system and method. The method comprises the following steps that: S1, after an access request is received, a login button is displayed on a home page of a first domain; S2, after operation of clicking a button is received, an iframe window is create on the home page, and an SRC property is set to a login page address of a second domain; S3, a login box of the second domain is displayed, and the login box includes a form field and a confirm button; S4, after operation of clicking the confirm button is received, login information is sent to a domain name server of the second domain in a POST manner; S5, whether the login information is correct is judged, if the login information is correct, a step S6 is carried out, and if the login information is not correct, the step S3 is repeated; and S6, the login box is closes, and a message of successful login is displayed in the iframe window. In the invention, the POST manner can be used to transmit data and the iframe window is used to carry out the cross domain data exchange, so as to ensure the safety of the cross domain login.