Journal
OPTICS LETTERS
Volume 35, Issue 21, Pages 3553-3555Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.003553
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Funding
- Departamento Administrativo de Ciencia Tecnologia e Innovacion
- Comite para el Desarrollo de la Investigacion
- Universidad de Antioquia (Colombia)
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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. (C) 2010 Optical Society of America
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