Full Phase Encoding for Digital Holographic Encryption Using Liquid Crystal Spatial Light Modulators

Tu, Han Yen; Chiang, Jen Shiun; Chou, Jian-Ping; Cheng, Chau Jern

doi:10.1143/jjap.47.8838

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…researched for data security since they can provide higher encryption speed than non-optical encryption techniques . In particular, double-random phase encryption (DRPE), one of the main optical encryption techniques, has been well investigated and improved as follows: DRPE using digital holography [2,3] , photoncounting DRPE [4,5] , DRPE using fractional Fourier transform [6][7][8] , and DRPE using orthogonal encoding [18,19] .…”

Section: Optical Encryption Techniques Have Been Widelymentioning

confidence: 99%

Security enhancement for double-random phase encryption using orthogonally encoded image and electronically synthesized key data

Cho¹

2015

中国光学快报

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We propose a security-enhanced double-random phase encryption (DRPE) scheme using orthogonally encoded image and electronically synthesized key data to cope with the security problem of DRPE technique caused by fixed double-random phase masks for encryption. In the proposed scheme, we adopt the electronically synthesized key to frequently update the phase mask using a spatial light modulator, and also employ the orthogonal encoding technique to encode the image and electronically synthesized key data, which can enhance the security of both data. We provide detailed procedures for encryption and decryption of the proposed scheme, and provide the simulation results to show the encryption effects of the proposed scheme.

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Section: Optical Encryption Techniques Have Been Widelymentioning

confidence: 99%

Security enhancement for double-random phase encryption using orthogonally encoded image and electronically synthesized key data

Cho¹

2015

中国光学快报

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“…Optical encryption has been widely investigated for information security because of its high encryption speed . As a representative optical encryption technique, double random phase encryption (DRPE) has been well studied and improvements have been developed, such as DRPE using the Fresnel domain [2], DRPE using a full-phase processor [3], DRPE using digital holography [4,5], photon-counting DRPE [6,7], and DRPE using fractional Fourier transform [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Accumulation Encoding Technique Based on Double Random Phase Encryption for Transmission of Multiple Images

Lee

2014

Journal of the Optical Society of Korea

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In this paper, we propose an accumulation encoding scheme based on double random phase encryption (DRPE) for multiple-image transmission. The proposed scheme can be used for a low-complexity DRPE system due to the simple structure of the accumulation encoder and decoder. For accumulation encoding of multiple images, all of the previously encrypted data are added, and hence the accumulation encoding can improve the security of the DRPE-encrypted data. We present a scheme for encryption and decryption for DRPE-based accumulation encoding, and a method for accumulation encoding and decoding. Finally, simulation results verify that the DRPE-based accumulation encoding scheme for multiple images is powerful in terms of data security.

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Strategy for cryptanalysis of optical encryption in the Fresnel domain

Situ

Pedrini

2010

Appl. Opt.

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Traditionally, cryptanalysis of optical security systems attempts to find original keys. Usually, by use of this kind of method, one can find a set of keys located close to the original keys in the key space. We call such a set the region of original key (ROK). For an optical encryption system in the Fresnel domain, such a strategy is ineffective since it needs to perform an exhaustive search to determine the system geometry or to solve an extremely large set of system equations. We propose to employ an alternative search strategy: to find a region of possible key (RPK). Since there is only one ROK for a cypher system but there are many RPKs, the probability to find a key in the RPK would be higher than in the ROK. Our analysis reveals that even a Fresnel-based encryption system has larger key space, but there are also serious security problems to be resolved.

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Full Phase Encoding for Digital Holographic Encryption Using Liquid Crystal Spatial Light Modulators

Cited by 4 publications

References 15 publications

Security enhancement for double-random phase encryption using orthogonally encoded image and electronically synthesized key data

Security enhancement for double-random phase encryption using orthogonally encoded image and electronically synthesized key data

Accumulation Encoding Technique Based on Double Random Phase Encryption for Transmission of Multiple Images

Strategy for cryptanalysis of optical encryption in the Fresnel domain

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