Known-plaintext attack on a joint transform correlator encrypting system
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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