Methods for optical image encryption and decryption based on biological information
US11451395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2021 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Mar 29, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3013
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Image encryption and decryption methods based on biological information. The encryption method includes: obtaining the biological information; using the chaotic mapping method to preprocess the biological information to construct the first chaotic biological phase plate and the second chaotic biological phase plate; obtaining the original image to be encrypted and use the first chaotic biological phase plate and the second chaotic biological phase plate to determine the reconstructed optical encrypted image based on the discrete cosine transform method, and Fresnel transform method; and inputting reference light that interferes with the encrypted image of the reproduction light to determine the encrypted image. The invention can reduce the information amount of the key, improve the efficiency of storage and transmission, and improve security.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.