Optical cryptography topology based on a three-dimensional particle-like distribution and diffractive imaging

Wen Chen, Xudong Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)


In recent years, coherent diffractive imaging has been considered as a promising alternative for information retrieval instead of conventional interference methods. Coherent diffractive imaging using the X-ray light source has opened up a new research perspective for the measurement of non-crystalline and biological specimens, and can achieve unprecedentedly high resolutions. In this paper, we show how a three-dimensional (3D) particle-like distribution and coherent diffractive imaging can be applied for a study of optical cryptography. An optical multiple-random-phase-mask encoding approach is used, and the plaintext is considered as a series of particles distributed in a 3D space. A topology concept is also introduced into the proposed optical cryptosystem. During image decryption, a retrieval algorithm is developed to extract the plaintext from the ciphertexts. In addition, security and advantages of the proposed optical cryptography topology are also analyzed.
Original languageEnglish
Pages (from-to)9008-9019
Number of pages12
JournalOptics Express
Issue number10
Publication statusPublished - 9 May 2011
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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