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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 21 — Nov. 1, 2010
  • pp: 3553–3555

Known-plaintext attack on a joint transform correlator encrypting system

John Fredy Barrera, Carlos Vargas, Myrian Tebaldi, Roberto Torroba, and Nestor Bolognini  »View Author Affiliations


Optics Letters, Vol. 35, Issue 21, pp. 3553-3555 (2010)
http://dx.doi.org/10.1364/OL.35.003553


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Abstract

We demonstrate in this Letter that a joint transform correlator shows vulnerability to known-plaintext attacks. An unauthorized user, who intercepts both an object and its encrypted version, can obtain the security key code mask. In this contribution, we conduct a hybrid heuristic attack scheme merge to a Gerchberg–Saxton routine to estimate the encrypting key to decode different ciphertexts encrypted with that same key. We also analyze the success of this attack for different pairs of plaintext–ciphertext used to get the encrypting code. We present simulation results for the decrypting procedure to demonstrate the validity of our analysis.

© 2010 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.4550) Fourier optics and signal processing : Correlators
(100.4998) Image processing : Pattern recognition, optical security and encryption

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: July 20, 2010
Revised Manuscript: September 20, 2010
Manuscript Accepted: September 22, 2010
Published: October 19, 2010

Citation
John Fredy Barrera, Carlos Vargas, Myrian Tebaldi, Roberto Torroba, and Nestor Bolognini, "Known-plaintext attack on a joint transform correlator encrypting system," Opt. Lett. 35, 3553-3555 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-21-3553


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