Journal
APPLIED OPTICS
Volume 51, Issue 11, Pages 1822-1827Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.51.001822
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Funding
- CODI-Universidad de Antioquia (Colombia)
- TWAS-UNESCO at Centres of Excellence in the South
- CONICET (Argentina) [112-200801-00863]
- ANCYT PICT (Argentina) [1167]
- Facultad de Ingenieria, Universidad Nacional de La Plata (Argentina) [11/I125]
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In experimental optodigital encrypting architectures, the use of a reference wave is essential. In this contribution, we present an experimental alternative to avoid the reference wave during the encrypting procedure in a joint transform correlator architecture by introducing the concept of a master key. Besides, the master key represents an additional security element for the entire protocol. In our method, the master key is holographically processed and used during the encryption process with the encrypting key. We give the mathematical description for the process in case of a single input object and then we extend it to multiple input objects. We present the experimental demonstration of the proposed method including two examples where this technique is successfully applied for several input objects. (C) 2012 Optical Society of America
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