2results about How to "Simplify the interaction process" patented technology

This invention belongs to the field of display interaction technology and provides a pointing interaction method and system based on hidden QR code embedding. Several QR code images are hidden and embedded in the display screen of the target screen. These QR code images utilize the human eye's flicker fusion effect, displaying frames alternately on the target screen according to a preset refresh rate, making the QR code images invisible to the human eye. In response to scanning and capturing by a smartphone camera, the QR code images are extracted and recognized. Based on the extracted and recognized information, the coordinates of the smartphone camera's optical center on the screen are calculated, obtaining the corresponding pointing position of the user on the screen. A cursor pattern that moves with the smartphone is displayed at the corresponding coordinate position, realizing pointing positioning of the smartphone on the display screen. This invention realizes pointing positioning function based on a smartphone on the display screen.

This invention discloses a quantum-attack-resistant blockchain-based password authentication key exchange and authentication method. The method involves inputting preset parameters, a trapdoor, a matrix, a noise vector, a password, and a public key into a computer system; executing a parameter generation algorithm to generate public parameters; executing a hash key generation algorithm to generate a hash key and a projected hash key generation algorithm to generate a projected hash key; generating a tag based on the identifiers of both communicating parties and the projected hash key, encrypting it to obtain ciphertext, and transmitting and receiving the projected hash key and ciphertext from the communicating party; verifying the validity of the communicating party's projected hash key, and generating a session key based on relevant parameters; and finally, the computer system processor executes a computer program and outputs the session key. This invention integrates a lattice-based smooth projected hash function with a trapdoor and a blockchain structure, possessing quantum attack resistance, general composable security characteristics, requiring only one round of communication, and is suitable for large-scale blockchain node scenarios.