منابع مشابه
Authenticating Visual Cryptography Shares Using 2D Barcodes
One of the problems pertinent with many visual cryptography (VC) schemes is that of authentication. VC provides a way of sharing secrets between a number of participants. The secrets are in the form of an image that is encoded into multiple pieces known as shares. When these shares are physically superimposed, the secret can be instantly observed. A known problem is that of authentication. How ...
متن کاملImpact of Error Filters on Shares in Halftone Visual Cryptography
Visual cryptography encodes a secret binary image (SI) into shares of random binary patterns. If the shares are xeroxed onto transparencies, the secret image can be visually decoded by superimposing a qualified subset of transparencies, but no secret information can be obtained from the superposition of a forbidden subset. The binary patterns of the shares, however, have no visual meaning and h...
متن کاملMulti-pixel Visual Cryptography for color images with Meaningful Shares
Visual cryptography technique for black and white images (Basic) introduced by Naor and Shamir [1]. Any visual secret information ( pictures, text, etc) is considered as image and encryption is performed using simple algorithm to generate n copies of shares depending on type of access structure schemes[2, 6].The simplest access structure is the 2 out of 2 scheme where the secret image is encryp...
متن کاملExtended Visual Cryptography for Color Shares using Random Number Generators
Visual cryptography is a special image encryption technique. It is different from traditional cryptography, because it does not need complex computation to decrypt. The benefit of the visual secret sharing scheme is in its decryption process where without any complex cryptographic computation encrypted data is decrypted using Human Visual System (HVS). But the encryption technique proposed here...
متن کاملA Modified Multi-secret Visual Cryptography with Ring Shares
A visual cryptography scheme encoding multiple secret images into two ring shares is proposed in this paper. In the secret sharing process, two shares are produced by the marked areas and the basis matrices of (2, 2)-VCS. Using ring shift right function, the secret images are recovered by stacking two shares. The security and contrast properties of the scheme have been proved. Compared with the...
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ژورنال
عنوان ژورنال: Journal of Imaging
سال: 2018
ISSN: 2313-433X
DOI: 10.3390/jimaging4110126