4results about How to "Strong uniqueness" patented technology

The invention belongs to the technical field of anti-counterfeit labels, and discloses a PUF pattern with a buckling layered structure and a preparation method of the PUF pattern. The preparation method comprises the following steps: spin-coating PDMS on a substrate, heating and curing, carrying out plasma treatment to obtain a PDMS film, further spin-coating a PVA aqueous solution containing NaB on the PDMS film, drying, carrying out ultraviolet crosslinking to obtain a PVA / PDMS double-layer film, dropwise adding an ethanol aqueous solution under specific heat treatment conditions, and spin-coating PDMS for pattern protection to obtain a PUF pattern which has a buckling layered structure, and has the characteristics of high strength, good mechanical properties, good mechanical properties and the like. The layered structure is a completely self-assembled process and has the characteristics of uniqueness, randomness, identifiability, physical unclonability and high stability. The preparation method provided by the invention has the advantages of simple process, easily available raw materials and lower cost, can be practically applied in the anti-counterfeiting field, and has huge market value.

An interactive authentication method is used for a sending end (A), and the sending end (A) is connected to a receiving end (B) in communication. The interactive authentication method includes: (S10) generating a first challenge and sending the first challenge to the receiving end (B); (S20) receiving a response sent by the receiving end (B), the response including first identity authentication information and a second challenge; (S30) encrypting the first identity authentication information and the second challenge by a first identity authentication key; (S40) generating a second identity authentication key and a second identity authentication information according to the first challenge; (S50) decrypting the first identity authentication information by using the second identity authentication key and matching the decrypted first identity authentication information with the second identity authentication information to perform identity authentication. In addition, the present application also discloses an interactive authentication device and system, a computer device, and a readable storage medium.

This invention discloses a two-way authentication method for AB dual-lock cabinets based on SM4 and RF-ID, belonging to the field of electronic authentication technology. The invention includes: inserting an electronic key and activating the control board; the control board verifying the electronic key's identity information; collecting and encoding the mechanical key's operating status; generating a temporary session key based on the mechanical status; the control board and the electronic key performing two-way authentication; releasing the electronic lock pin upon successful authentication; recording and uploading the operation log and enabling permissions; and executing locking and alarm strategies upon authentication failure. This invention integrates the real-time operating status of the mechanical key as a dynamic seed into the SM4 session key derivation and two-way challenge-response authentication process, achieving deep real-time coupling and interlocking between electronic authentication and mechanical operation.

This invention discloses a backdoor attack method for deep neural network models, comprising: constructing and pre-training a spatial adaptive feature selection network; processing images by dividing them into blocks and inputting them into the pre-trained spatial adaptive feature selection network, and introducing a weighted ranking mechanism to generate trigger materials; constructing a feature labeling network, inputting labels into the feature labeling network to generate a label mapping map; and generating poisoned samples using the trigger materials and the label mapping map. This invention's deep neural network model backdoor attack method solves the problem of low attack success rate caused by the simple trigger structure and weak spatial adaptability in existing technologies.