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Proceedings Paper

Optical design of cipher block chaining (CBC) encryption mode by using digital holography
Author(s): Sang Keun Gil; Seok Hee Jeon; Jong Rae Jung; Nam Kim
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Paper Abstract

We propose an optical design of cipher block chaining (CBC) encryption by using digital holographic technique, which has higher security than the conventional electronic method because of the analog-type randomized cipher text with 2-D array. In this paper, an optical design of CBC encryption mode is implemented by 2-step quadrature phase-shifting digital holographic encryption technique using orthogonal polarization. A block of plain text is encrypted with the encryption key by applying 2-step phase-shifting digital holography, and it is changed into cipher text blocks which are digital holograms. These ciphered digital holograms with the encrypted information are Fourier transform holograms and are recorded on CCDs with 256 gray levels quantized intensities. The decryption is computed by these encrypted digital holograms of cipher texts, the same encryption key and the previous cipher text. Results of computer simulations are presented to verify that the proposed method shows the feasibility in the high secure CBC encryption system.

Paper Details

Date Published: 7 March 2016
PDF: 8 pages
Proc. SPIE 9771, Practical Holography XXX: Materials and Applications, 97710Y (7 March 2016); doi: 10.1117/12.2212063
Show Author Affiliations
Sang Keun Gil, Univ. of Suwon (Korea, Republic of)
Seok Hee Jeon, Incheon National Univ. (Korea, Republic of)
Jong Rae Jung, Suwon Science College (Korea, Republic of)
Nam Kim, Chungbuk National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9771:
Practical Holography XXX: Materials and Applications
Hans I. Bjelkhagen; V. Michael Bove, Editor(s)

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