82results about How to "Reduce the likelihood of an attack" patented technology

The invention relates to an NFC (Near Field Communication) transmission method based on biometric feature recognition. A fingerprint recognition sensor is integrated into a mobile terminal, and is functionally combined with an NFC module and a Bluetooth module. The method comprises the following steps: acquiring the fingerprint information of a user by using the fingerprint recognition sensor; deciding whether the NFC module is permitted to be started or not according to the authentication result of the fingerprint recognition sensor; if an NFC function is permitted to be started according to authentication, further judging a system task; if an NFC payment activity is performed, fully handing over a task for exchanging payment information to the NFC module for finishing by a system; if the system performs data exchange activities such as tag reading / writing, starting the NFC module, rapidly activating a Bluetooth module by using the NFC module, establishing a Bluetooth transmission link, and handing over a data transmission task to the Bluetooth module for processing. By adopting the NFC transmission method, the security of payment activities and data exchange is ensured, meanwhile links are established among terminals, and the data transmission speed is increased.

The invention provides a method for switching encryption safety data among peer-to-peer user nodes in a P2P (peer-to-peer) network. Two arbitrary peer-to-peer user nodes in the network, namely, a user node A and a user node B, log in the network to obtain a public key certificate through an authentication server; the user node A has a self-provided random number NA and a random number NB sent from the user node B; the user node B has a self-provided random number NB and a random number NA sent from the user node A; and the encryption algorithm is applied to enable the user node A and the user node B to form an encryption channel for data encryption transmission. In the invention, safety communication can be set simply, the interaction frequency is low, and except the first-time certificate transmitting of explicit message, other information interaction is achieved under the condition of encrypted message, so that a better security is ensured.

The invention discloses a method for improving the safety of Web service, which comprises the following steps: generating a request data packet comprising a first message digest generated by encrypting a user password by using a hash algorithm at a client side, and sending the data packet into a server side; using the hash algorithm to encrypt the stored user password by the service side, and generating a second message digest; comparing the first message digest with the second message digest by the server side, generating and storing a session identifier if the first message digest and the second message digest are same, using a symmetric encryption algorithm to encrypt the session identifier by taking the stored user password as a secret key, and sending the session identifier to the client side; using the symmetric encryption algorithm to decrypt the session identifier by taking the user password as the secret key by the client side to obtain a plaintext of the session identifier, and using the plaintext of the session identifier to send a session request to the server side; firstly judging whether the session identifier which is same as the session identifier in the session request exists or not in a memory by the service side, processing the session request and eliminating the session identifier if so, and returning a processing result.

The invention discloses a method for unlocking and locking a vehicle door on the basis of a Bluetooth communication protocol and belongs to the technical field of shared automobiles. Use scenes of a rent car and a private car are both taken into consideration so that the vehicle management safety is also taken into consideration while convenience is brought to a driver / borrower. The method for unlocking and locking the vehicle door on the basis of the Bluetooth communication protocol comprises the steps of S1, establishing binding of a vehicle-mounted terminal, a vehicle and a Phone APP; S2, logging in the Phone APP to transmit a car booking request, and enabling a TSP to receive reserve information to generate a digital key and transmit the digital key to the Phone APP and the vehicle-mounted terminal; S3, finding a car, performing communication connection through a Bluetooth, executing an unlocking instruction, unlocking the vehicle door after authentication, and otherwise, failing to unlock the vehicle door; and S4, performing secondary authentication through a PIN code; after successful authentication, activating a vehicle physical key and starting a vehicle; and otherwise, enabling the vehicle to be unable to start.

The invention discloses an intelligent selecting method of account keeping nodes, and relates to the field of block chains, virtual currency and artificial intelligence. The method comprises the stepsthat step one, node capacity value of each account keeping node is calculated based on block data; step two, threshold values of the node capacity value of each node are counted; step three, part ofaccount keeping nodes are selected randomly after a current account keeping node is determined according to the threshold values to complete node selection. The method aims at solving the problems ofaccount conflict, low account keeping efficiency and energy wasting caused by mining computing conducted by a large number of miners, and preventing the problems of unequal and non-decentralization caused by selecting account keeping nodes by adopting man-made voting; intelligent account keep right or mining right distribution mechanism are adopted based on block data and each dimensional data ofthe miners, hacker attack is prevented by adopting the account keeping right or mining right random distribution, and the problems of energy wasting and low account keeping efficiency caused by miningconflict are solved under the premises of equality, decentralization and safety of the block chains.

The embodiment of the invention provides a message detection method and device, and is applied to security equipment. The method comprises the steps that the rules in a rule management library are classified, each type of rules are compiled one by one so as to generate distributed detection engines performing message detection by using the type of rules, and all the rules in the rule management library are compiled so as to generate a master detection engine performing message detection by using all the rules; when a message is received, whether the master detection engine is generated is detected; if the master detection engine is not generated, existence of the generated distributed detection engines is detected; if the generated distributed detection engines exist, the generated distributed detection engines are utilized to detect the message; and if the first distributed detection engine of the generated distributed detection engines detects that the message is matched with the rule used by the first distributed detection engine, the message is processed by using the first distributed detection engine according to the matched rule. With application of the message detection method and device, the possibility of attack to the network protected by the security equipment can be reduced.

The invention belongs to the technical field of communication network security, and discloses a mass D2D anonymous discovery authentication and key negotiation method. The method includes an initialization authentication stage; an anonymous device discovery stage based on prefix encryption; a mutual authentication and key negotiation stage based on batch verification; and a key confirmation stage.According to the scheme design carried out according to the 3GPP standard, communication equipment in the standard does not need to be changed, and the method can be applied to networks of all LTE-A / 5G mobile scenes; the general structure of the equipment discovery and authentication mechanism provided by the invention can realize discovery, mutual authentication, key negotiation and identity privacy protection of adjacent equipment; according to the rapid key confirmation method based on the CRT mechanism provided by the invention, the signaling number is effectively reduced; the signaling overhead, the communication overhead and the transmission overhead are reduced; direct mutual authentication between a large number of D2D devices can be directly realized, and all known attacks at present can be resisted.

The invention discloses a USB equipment control method and device and computing equipment. A first operating system runs on the computing equipment, and a conversion module using the USB equipment control method is arranged on the computing equipment, so that a USB application designed for a second operating system can run in the first operating system. The method comprises the steps that equipment events of a USB equipment manager are polled; when an equipment insertion event is received, a USB equipment object associated with USB equipment corresponding to the event is created, and a global USB equipment object list is updated; the list is traversed, and the USB equipment is registered in a registry compatible with the second operating system; a physical equipment object and a functional equipment object of the USB equipment object are sequentially created, and the functional equipment object is attached to the physical equipment object; a symbol link is created to point to an equipment name of the USB equipment in a compatible kernel of the second operating system; a broadcast message compatible with the second operating system is sent to notify the inserted USB equipment.

The invention discloses a payment method and system for a mobile terminal, and the method comprises the steps: selecting the number of articles in a vending machine, and generating the amount of money through the vending machine according to the number of articles; generating an identification code comprising the information of money, and a transaction random code through the vending machine; enabling the mobile terminal to scan the identification code, so as to transmit payment information to a money-receiving server; returning a confirmation code to the mobile terminal after the money-receiving server receives the payment information; and enabling the mobile terminal to receive the confirmation code and display the conformation code. The vending machine scans the displayed confirmation code, and enables the transaction random code to be matched with the confirmation code. If the matching is successful, the article is sold. The beneficial effects of the invention are that the vending machine does not need to be connected with an Ethernet, thereby saving the networking cost, reducing the possibility of being attacked by network hackers, and improving the safety and reliability; the method and system achieves payment through a wireless network of the mobile terminal, thereby effectively saving the payment cost of the vending machine and management and maintenance cost of the vending machine, facilitating the payment, and optimizing the user experience.

The invention provides a method of achieving the electronic digital signature system in the information system safety special technique field. The method with the association of the software and the hardware achieves the electronic digital signature system, wherein the calculation of all the digital signatures and all the signature checks is made in the hardware printing circuit board and the application-specific integrated circuit. The method enhances the safety of the electronic digital system.

The invention discloses a group key management method based on linear geometry, comprising the following steps: step 1, a group controller selects finite field F and mapping f used by group; a group member selects a secret vector on the finite field F, and transmits to the group controller by a secure channel; step 2, the group controller selects a mapping parameter and maps the secret vector of all group members into a group of new vectors using the mapping f; step 3, the group controller selects a random number k as a group key and constructs a linear equation set using the new vector group and group key; and the group controller solves the central vector and transmits the central vector and the mapping parameter to the group member; step 4, the group member maps the secret vector thereof to a new vector in a vector space according to the mapping parameter and then calculates the product of the new vector and the central vector to obtain the group key. The method has the advantages of few storage content, small calculated amount and high security, and can effectively avoid brute force attack.

The invention discloses a group key management method based on linear geometry, comprising the following steps: step 1, a group controller selects finite field F and mapping f used by group; a group member selects a secret vector on the finite field F, and transmits to the group controller by a secure channel; step 2, the group controller selects a mapping parameter and maps the secret vector of all group members into a group of new vectors using the mapping f; step 3, the group controller selects a random number k as a group key and constructs a linear equation set using the new vector groupand group key; and the group controller solves the central vector and transmits the central vector and the mapping parameter to the group member; step 4, the group member maps the secret vector thereof to a new vector in a vector space according to the mapping parameter and then calculates the product of the new vector and the central vector to obtain the group key. The method has the advantages of few storage content, small calculated amount and high security, and can effectively avoid brute force attack.