HOLOGRAPHIC ENCRYPTION OF MULTI-DIMENSIONAL IMAGES AND DECRYPTION OF ENCRYPTED MULTI-DIMENSIONAL IMAGES

摘要

Cryptographic techniques for encrypting images, and decrypting and reconstructing images, are provided to facilitate preventing unauthorized access to images. A holographic cryptographic component (HCC) generates complex holograms of multi-dimensional source images of a multi-dimensional object scene. The HCC generates phase holograms, based on the complex holograms, using a stochastic hologram generation process, and encrypts the phase holograms to generate encrypted holograms based on a random phase mask, which can be the private encryption key. At the decoding end, an HCC overlays a conjugate phase mask on the encrypted holograms to decrypt them, wherein the decrypted holograms are illuminated with a coherent light source to generate holographic images that reconstruct the source images. The source images are only reconstructed properly if the correct phase mask is used. If HCC applies the encryption process repetitively to the same source image, HCC can generate a different encrypted hologram in each run.

主权项

1. A system, comprising:
at least one memory that stores executable components; and at least one processor, coupled to the at least one memory, that executes or facilitates execution of the executable components, the executable components comprising:
a hologram generator component that generates a set of complex holograms based at least in part on a set of source images of a multi-dimensional object scene; anda holographic cryptographic component that applies a stochastic hologram generation process to facilitate generation of the set of complex holograms, to facilitate generation of a set of phase holograms based at least in part on the set of complex holograms, and to encrypt the set of phase holograms using a random phase mask as a private encryption key to facilitate cryptographically securing the set of source images, wherein the set of phase holograms represents, at least in part, the set of source images, and wherein the set of phase holograms is generated based at least in part on random information derived from the stochastic hologram generation process.