4results about How to "Enhanced anonymity" patented technology

The invention discloses an Internet of Vehicles authentication method based on a block chain and a physical unclonable function, and relates to the field of data security, and the method comprises the steps: a vehicle and a communication object complete registration at a roadside base station, and a vehicle end integrates a PUF and a fuzzy extractor to generate a master key bound with equipment; during authentication, the vehicle uses the password, the biological characteristics and the PUF response to perform multi-factor authentication, and submits a Merkle proof of a target communication object to the roadside base station; and the roadside base station verifies the proof and confirms the access authority through the block chain smart contract, and assists the vehicle and the communication object to complete mutual authentication and negotiate the session key. According to the method, the block chain is utilized to ensure that data cannot be tampered, equipment cloning is resisted through the PUF, efficient authorization control is realized in combination with the Merkle tree, pseudo name dynamic updating and identity revocation are supported, and finally, the calculation, communication and storage overhead is remarkably reduced while the security is ensured.

The utility model discloses a portable anonymous health consultation self-service terminal device, which relates to the technical field of psychological health consultation, and comprises an isolation assembly, a consultation terminal assembly is arranged in the isolation assembly, the consultation terminal assembly comprises a terminal machine, a touch screen is fixedly arranged on one side of the top end of the terminal machine, and the touch screen is connected with the isolation assembly. An operation table is arranged on one side of the middle of the terminal, a microphone is fixedly installed in the middle of the top end of the operation table and is a voiceprint mask microphone, a camera module is arranged at the top of the touch screen, a physical mask is slidably connected to the surface of the camera module, and broadcasting ports are formed in the two sides of the terminal. Heart rate monitoring modules are arranged at the two ends of the top of the operation table, and the heart rate monitoring modules are in wireless communication connection with the consultation terminal assembly; according to the utility model, the user can conveniently carry out anonymous psychological consultation, more non-voice information can be provided for psychologists, the accuracy and effect of consultation are improved, and the psychological consultation system has high practical value.

The invention discloses a lattice-based linkable linear homomorphic ring signature method. The method comprises the steps of system initialization, user key generation, ring signature generation, ring signature verification, signature link judgment and homomorphic signature combination and verification. According to the method, a ring public key with a fixed size is constructed through trap door derivation and matrix aggregation technologies, so that the problem of linear increase of storage overhead when the ring scale is expanded is solved, and the storage efficiency is remarkably improved; and meanwhile, by utilizing a link label mechanism based on a fault-tolerant learning problem, association judgment of signatures generated by the same signer is realized on the premise of protecting the anonymity of the signer, and verifiability and supervision are provided for data calculation in an anonymous environment.

This application discloses a data processing method, apparatus, device, storage medium, and program product, relating to the field of data processing technology. The method includes generating a privacy vector and a public key vector based on anonymity query rule data and public parameters, where the public parameters are jointly determined by the data queryer and the data provider; sending an anonymity request to the data provider, the anonymity request carrying the public key vector, the anonymity request being used by the data provider to generate a secret vector and a secret number, the secret vector being a vector in which the data provider encrypts and hides the entire original data using a random mask and an error vector, and the secret number being a secret number associated with the public key vector and the random mask, encrypted and hidden using random error; receiving data feedback information sent by the data provider, the data feedback information including the secret vector and the secret number; and determining the request result corresponding to the anonymity request from the data feedback information based on the privacy vector. This approach can resist quantum computing attacks and prevent data leakage.