Embedded Extended Visual Cryptography Schemes

Liu, Feng; Wu, Changchun

doi:10.1109/tifs.2011.2116782

Cited by 140 publications

(78 citation statements)

References 26 publications

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“…In addition, more sophisticated approaches [4][5][6] that improve the visual quality of shares have been proposed. The traditional VCS, which encrypts only a single image, has been extended to handle multiple secrets using two circle shares and different rotation angles [7].…”

Section: Visual Cryptographymentioning

confidence: 99%

Magic sheets: Visual cryptography with common shares

Kita

Miyata

2018

Comp. Visual Media

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Visual cryptography (VC) is an encryption technique for hiding a secret image in distributed and shared images (referred to as shares). VC schemes are employed to encrypt multiple images as meaningless, noisy patterns or meaningful images. However, decrypting multiple secret images using a unique share is difficult with traditional VC. We propose an approach to hide multiple images in meaningful shares. We can decrypt multiple images simultaneously using a common share, which we refer to as a magic sheet.The magic sheet decrypts multiple secret images depending on a given share. The shares are printed on transparencies, and decryption is performed by physically superimposing the transparencies. We evaluate the proposed method using binary, grayscale, and color images.

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Section: Visual Cryptographymentioning

confidence: 99%

Magic sheets: Visual cryptography with common shares

Kita

Miyata

2018

Comp. Visual Media

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“…o Embedded EVCS: L i u and Wu [65] introduced an embedded EVCS which embeds random share into meaningful covering share. The proposed schemes works mainly in two stages: Stage 1 -generate n number of covering shares by using n input original share image, and Stage 2 -embeds the corresponding VCS into n number of covering shares to generate embedded shares.…”

Section: Extended Visual Cryptographymentioning

confidence: 99%

A Survey on Key(s) and Keyless Image Encryption Techniques

S¹,

Fathimath²,

Aithal

et al. 2017

Cybernetics and Information Technologies

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As in recent years digital data transmission and image application have been increasing, maintaining secure transmission of image is of high importance. Image Encryption is implemented to achieve security on image applications. This paper exhibits a survey on various existing image encryption techniques. The paper mainly focuses on two types: Image encryption with Key(s) and Image Encryption without Key(s). In addition it also describes several properties of a good image encryption technique. The paper presents a survey of most popular algorithms and research papers that are related with different image encryption techniques.

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“…After the scheme was proposed, many related topics have been studied. Feng Liu and Chuankun Wu proposed [2] about Embedded visual cryptography schemes. In this paper they have given an insight of how improve the visual cryptography by meaningful shares.…”

Section: Literature Reviewmentioning

confidence: 99%

Secure System Framework for Secure Visual Cryptography

Kundiya¹,

Joshi²

2015

IJCA

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A visual cryptography scheme (VCS) is a secret sharing of secret image shares which involves dividing the secret image into number of shares and a certain number of shares are sent over the network. The decryption process involves stacking of the shares to get the secret image. The main advantage of visual cryptography scheme is that a number of qualified shares are able to recover the secret image without any cryptographic knowledge, calculation and computation devices. Simple Visual Cryptographic technique is not secure. Because simple visual cryptography scheme only deals with creation of secret share and just combined it at receiver side. In the proposed system we apply visual cryptography technique. The image is to be transferred on the network (also known as secret image) is first compressed and then hidden by cover image using LSB technique. To enhance security, additional security measures are applied further to get encrypted image using symmetric key algorithm. The shares are generated from the encrypted image using RNS (Residual Number System) algorithm. Next share stacking procedure is applied using CRT (Chinese Remainder Theorem) algorithm to get final encrypted image at receiver side. Further, decryption of final encrypted image is done by using same algorithm which is used for encryption purpose. By applying this technique security and quality of image is improved and pixel expansion problem will get reduced. General TermsVisual Cryptography Scheme (VCS), LSB technique, RNS (Residual Number System) algorithm, CRT (Chinese Remainder Theorem) algorithm.

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Embedded Extended Visual Cryptography Schemes

Cited by 140 publications

References 26 publications

Magic sheets: Visual cryptography with common shares

Magic sheets: Visual cryptography with common shares

A Survey on Key(s) and Keyless Image Encryption Techniques

Secure System Framework for Secure Visual Cryptography

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