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Applied Optics

Applied Optics


  • Vol. 39, Iss. 14 — May. 10, 2000
  • pp: 2340–2346

Stream cipher based on pseudorandom number generation with optical affine transformation

Toru Sasaki, Hiroyuki Togo, Jun Tanida, and Yoshiki Ichioka  »View Author Affiliations

Applied Optics, Vol. 39, Issue 14, pp. 2340-2346 (2000)

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We propose a new, to our knowledge, stream cipher technique for two-dimensional (2-D) image data that can be implemented by iterative optical transformation. The stream cipher uses a pseudorandom number generator (PRNG) to generate a pseudorandom bit sequence. The proposed method for the PRNG is composed of the iterative operation of 2-D affine transformation achieved by optical components and by modulo-n addition of the transformed images. We expect efficient execution of the method by optical parallel processing. We verify the performance of the proposed method in terms of security strength and clarify problems on optical implementation by the optical fractal synthesizer.

© 2000 Optical Society of America

OCIS Codes
(100.1160) Image processing : Analog optical image processing
(200.3050) Optics in computing : Information processing
(200.4960) Optics in computing : Parallel processing

Original Manuscript: June 15, 1999
Revised Manuscript: January 3, 2000
Published: May 10, 2000

Toru Sasaki, Hiroyuki Togo, Jun Tanida, and Yoshiki Ichioka, "Stream cipher based on pseudorandom number generation with optical affine transformation," Appl. Opt. 39, 2340-2346 (2000)

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