Flexible optical encryption with multiple users and multiple security levels
✍ Scribed by Naveen K. Nishchal; Thomas J. Naughton
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 610 KB
- Volume
- 284
- Category
- Article
- ISSN
- 0030-4018
No coin nor oath required. For personal study only.
✦ Synopsis
We present a basic optical encryption architecture that admits several cryptography applications based on multiplexing. Users can decrypt different private images from the same encrypted image, a superuser can have a key that decrypts all encrypted images, and multiplexed images can be encrypted with different levels of security. This system is presented in the context of a general framework of optical encryption application development. We illustrate with a real-world three-dimensional scene, captured with digital holography, and encrypted using the fractional Fourier transform, where different users have access to different threedimensional objects in the scene.