156682 20251017144650.0 doi 10.3390/app15084120 sideral 143960 ART-2025-143960 eng Blesa, Alfonso Universidad de Zaragoza (orcid)0000-0001-9688-2260 Advancement of the DRPE Encryption Algorithm for Phase CGHs by Random Pixel Shuffling 2025 Access copy available to the general public Unrestricted This work presents an optical encryption process for various types of information related to 3D worlds (scenes) or 2D images, utilizing Computer-Generated Holograms (CGHs). It also introduces a modification to the Dual Random Phase Encoding (DRPE) encryption algorithm by incorporating pixel shuffling. This proposal enables the use of either a single key for both pixel shuffling and phase mask definition or two independent keys. The latter option is particularly advantageous in applications that require the involvement of two independent agents to retrieve the original plaintext. The dimension of the CGHs determines the size of the keys based on the random generation of values by cryptographically secure algorithms, so the use of arithmetic encryption is proposed for data compression. However, this proposal allows the use of other algorithms described in the literature to generate the shuffle and phase matrices. The complete workflow is described starting from the synthesis of a 3D scene, defined by a mesh of triangles with shape and appearance modeling, or 2D images of any level of geometric or visual complexity using computer graphics; its storage in a CGH, the encryption and decryption process, and finally, the results obtained in the laboratory and by simulation are shown. The similarity between different encryption levels is measured by the Pearson Coefficient to evaluate the results obtained. info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Serón, Francisco J. Universidad de Zaragoza (orcid)0000-0003-1683-4694 5008 785 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Tecnología Electrónica 5007 570 Universidad de Zaragoza Dpto. Informát.Ingenie.Sistms. Área Lenguajes y Sistemas Inf. 15, 8 (2025), 4120 [16 pp.] Appl. sci. Applied Sciences (Switzerland) 2076-3417 16178944 http://zaguan.unizar.es/record/156682/files/texto_completo.pdf Versión publicada 2518065 http://zaguan.unizar.es/record/156682/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:156682 articulos driver 2025-10-17-14:36:08 ARTICLE