Dynamic visual cryptography for optical assessment of chaotic oscillations

Petrauskiene, Vilma; Survila, Arvydas; Fedaravičius, Algimantas; Ragulskis, Minvydas

doi:10.1016/j.optlastec.2013.10.015

Cited by 12 publications

(7 citation statements)

References 15 publications

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“…In this scheme, more secrets can be revealed by overlapping folded shares. Other researchers also proposed DVC scheme for assessing chaotic oscillations [75]. In addition to being able to protect multiple secrets, another advantage of DVC is that its recovered images have high contrast but it suffers from high memory complexity which reduces its effectiveness for real-time applications [71].…”

Section: Number Of Secretsmentioning

confidence: 99%

See 1 more Smart Citation

An overview of visual cryptography techniques

Ibrahim

Teh

Abdullah

2021

Multimed Tools Appl

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Visual cryptography is an encryption technique that decomposes secret images into multiple shares. These shares are digitally or physically overlapped to recover the original image, negating the need for complex mathematical operations or additional hardware. There have been many variations of visual cryptography proposed over the years, each addressing different problems or to fulfill different security requirements. Existing review papers on the area only cover certain types of visual cryptography or lack comparisons between the various schemes. To address this gap, this paper provides broad overview of the area to aid new researchers in identifying research problems or to select suitable visual cryptography methods for their desired applications. For more veteran researchers in the area, our paper provides the most up-to-date coverage of the state-of-the-art. We first provide an introduction to the various categories of visual cryptography techniques, including a discussion on recently proposed schemes. These schemes are then compared in terms of their features, performance metrics, advantages and disadvantages. Compared to prior work, we extend the number of comparison metrics to include signal-to-noise ratio and the type of shares. Over 40 visual cryptography schemes that have been proposed in the past two decades were analyzed and compared. Our findings indicate that existing problems such as pixel expansion, poor quality of recovered image quality, computational and memory complexities still exist, and a optimizing the trade-off between these requirements still requires further investigation. We conclude the paper with a discussion of these open problems and future research directions.

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Section: Number Of Secretsmentioning

confidence: 99%

“…Although there are schemes that are able to encrypt multiple secrets, they are either inefficient or are difficult to use [31,55,61,71,74,75,102]. For example, schemes that involve rotating shares may lead to decryption errors when the rotation angles are inaccurate [41].…”

Section: Open Problems and Directionsmentioning

confidence: 99%

An overview of visual cryptography techniques

Ibrahim

Teh

Abdullah

2021

Multimed Tools Appl

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“…Visual cryptography is one of the cryptographic techniques that encrypt the visual information in such a manner that the method of decryption is performed without the aid of computers. Dynamic cryptography using chaos oscillations introduced in [5] provided a completely visual decoding process. Scale Invariant Feature Transform (SIFT) [6] was introduced to improve the retrieval or decoding performance using local key point descriptors.…”

Section: Introductionmentioning

confidence: 99%

Discrete Cosine Transformer Based Visual Secret Sharing With Chaos Visual Cryptography

Dayanand¹,

Selvakumar²

2015

IJMUE

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With the increasing threats on multimedia information sharing, degradation of security is one of the most important concerns. Visual Cryptography is an emerging field for improving the security level by encoding the secret video using encryption scheme and performs computational free decoding process. The secret sharing through visual cryptographic techniques for multiple stack users is not sufficient in providing high percentage result on video sharing domain. Video sharing did not develop source key properties for individual frames and as a result the quality estimation strategy on video frame was not achieved. Moreover, the target rate constraint for video quality under the encryption-decryption was not achieved. This encryption-decryption target key rate declines on arranging multiple sequences of frames from multiple stack users. To improve the quality of visual secret video sharing scheme, a Discrete Cosine Transform Chaos Cryptographic (DCTCC) mechanism is proposed in this paper. The main objective of DCTCC is to enhance the security level of different level video frame using the encryption key properties. Initially, sender takes the video of differing frame length and compresses the video on image using the Discrete Cosine Transformer. The Discrete Cosine Transformer based visual secret sharing of video in the image takes the luminance values and provides high lossless compression. Second, the embedded video frame is encrypted to perform the secret sharing (i.e., visual cryptographic) using the chaos method. The Chaos method uses the enhanced RSA key properties to improve the video quality estimation strategy. Chaos method in DCTCC works effectively with non-linear dynamic set of video frames from users and also with the discrete time dynamical video cryptographic system. On the decryption side, the chaos method is applied in the reverse procedural order to fetch the video quality of video frames from original image. Experiment is conducted on factors such as mean square error rate, and secret video sharing efficacy level and encryption time.

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“…The moiré effect, as a specific optical phenomenon and a tool for image processing and precision measurement, has been widely used in scientific research and engineering practice [29][30][31][32]. In recent years, some researchers have studied the issues of various information security systems [33][34][35] and the authentication of documents [36,37], which are based on the theory of the moiré effect. However, to the best of our knowledge, most of these approaches have been limited to using linear gratings.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we proposed a simple optical authentication scheme based on the moiré effect of nonlinear gratings in phase space. Admittedly, there are some techniques based on the moiré effect using two linear gratings [33][34][35][36][37]. However, as we know, the moiré effect is in no way restricted to linear gratings and the relationship of phase functions is also suitable for nonlinear gratings, which could increase the quantity of application possibilities.…”

Section: Introductionmentioning

confidence: 99%

Optical authentication based on moiré effect of nonlinear gratings in phase space

Liao¹,

He²,

Wu³

et al. 2015

J. Opt.

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An optical authentication scheme based on the moiré effect of nonlinear gratings in phase space is proposed. According to the phase function relationship of the moiré effect in phase space, an arbitrary authentication image can be encoded into two nonlinear gratings which serve as the authentication lock (AL) and the authentication key (AK). The AL is stored in the authentication system while the AK is assigned to the authorized user. The authentication procedure can be performed using an optoelectronic approach, while the design process is accomplished by a digital approach. Furthermore, this optical authentication scheme can be extended for multiple users with different security levels. The proposed scheme can not only verify the legality of a user identity, but can also discriminate and control the security levels of legal users. Theoretical analysis and simulation experiments are provided to verify the feasibility and effectiveness of the proposed scheme.

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Dynamic visual cryptography for optical assessment of chaotic oscillations

Cited by 12 publications

References 15 publications

An overview of visual cryptography techniques

An overview of visual cryptography techniques

Discrete Cosine Transformer Based Visual Secret Sharing With Chaos Visual Cryptography

Optical authentication based on moiré effect of nonlinear gratings in phase space

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