Abstract

We explain the vulnerability of the phase-only encryption procedure suggested by Seo and Kim [Opt. Lett. 28, 304 (2003)] and clarify issues regarding its robustness and degree of security compared with those of a previously reported phase-only encryption method.

© 2003 Optical Society of America

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References

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  1. D.-H. Seo and S.-J. Kim, Opt. Lett. 28, 304 (2003).
    [CrossRef] [PubMed]
  2. J. Glückstad, “An optical encryption and decryption method and system,” International patent application WO 002339A1 (July 3, 1998).
  3. J. Glückstad, Proc. SPIE 3715, 152 (1999).
    [CrossRef]
  4. P. C. Mogensen and J. Glückstad, Opt. Lett. 25, 566 (2000).
    [CrossRef]
  5. P. C. Mogensen and J. Glückstad, Appl. Opt. 40, 1226 (2001).
    [CrossRef]
  6. V. R. Daria, J. Glückstad, P. C. Mogensen, R. L. Eriksen, and S. Sinzinger, Opt. Lett. 27, 945 (2002).
    [CrossRef]
  7. J. Glückstad, Opt. Commun. 130, 225 (1996).
    [CrossRef]

1999

J. Glückstad, Proc. SPIE 3715, 152 (1999).
[CrossRef]

Glückstad, J.

J. Glückstad, Proc. SPIE 3715, 152 (1999).
[CrossRef]

Proc. SPIE

J. Glückstad, Proc. SPIE 3715, 152 (1999).
[CrossRef]

Other

P. C. Mogensen and J. Glückstad, Opt. Lett. 25, 566 (2000).
[CrossRef]

P. C. Mogensen and J. Glückstad, Appl. Opt. 40, 1226 (2001).
[CrossRef]

V. R. Daria, J. Glückstad, P. C. Mogensen, R. L. Eriksen, and S. Sinzinger, Opt. Lett. 27, 945 (2002).
[CrossRef]

J. Glückstad, Opt. Commun. 130, 225 (1996).
[CrossRef]

D.-H. Seo and S.-J. Kim, Opt. Lett. 28, 304 (2003).
[CrossRef] [PubMed]

J. Glückstad, “An optical encryption and decryption method and system,” International patent application WO 002339A1 (July 3, 1998).

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Equations (4)

Equations on this page are rendered with MathJax. Learn more.

ex,y=fpx,yrpx,y=expjπfx,yexpjπrx,y,
ex,y=expjπrx,yfx,y=0expjπa+rx,yfx,y=a.
ex,y=expjπrx,yfx,y=0-expjπrx,yfx,y=1.
ex,y=fpx,yrpx,y=expj2πfx,y+rx,ymod 2π

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