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Code covered by the BSD License

VisCrypt(inImg) Program for Construction of a two-out-of-two Visual Cryptography Scheme
generateShare(a,b) Program for random permuting the share generation
Main.m
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5.0 | 3 ratings Rate this file 75 Downloads (last 30 days) File Size: 24.77 KB File ID: #24981

Visual Cryptography

10 Aug 2009 (Updated 07 Jun 2011)

Generation of two-out-of-two Visual Cryptography Scheme shares.

File Information
Description	This program generates a two-out-of-two Visual Cryptography Scheme shares. The input image for this program should be a binary image. The shares and the overlapping result of the shares are written as output. The Shares (1 & 2) can be printed in separate transparent sheets and overlapping them reveals the secret image.
Required Products	Image Processing Toolbox
MATLAB release	MATLAB 6.5 (R13)

Tags for This File
Everyone's Tags	cryptography(3), fun, image invariant visual cryptography, image processing, image sharing, mathematics
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Comments and Ratings (5)
12 Aug 2009	Christopher	Quite Interesting. Its working for my own images.
01 Sep 2009	Ashok Kumar	EXCELLENT WORK... VERY INTERESTING........ www.zebrosindia.com
21 Aug 2010	priya anthony	Hi Athi It is quite interesting could u tell me how to do it for 3 out of 3 scheme
17 Oct 2010	Gopi Subramanian	Why pixel expansion 2 is used?. Comments not enough. Open source is way the technology free to learn, not just code. - Freedom Software Code without proper comments is a Bread without jam
26 Nov 2011	sander	sir how to generate the same shares for colour images. shares of red green and blue. den combining them to get colour visual cryptography

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Updates
11 Aug 2009	The first two columns of the share were always "0" in the previous release. The file "VisCrypt.m" has been updated to fix this issue.
07 Jun 2011	Author Info Updated

Tag Activity for this File
Tag	Applied By	Date/Time
image processing	Athi	10 Aug 2009 12:11:31
mathematics	Athi	10 Aug 2009 12:11:31
image sharing	Athi	11 Aug 2009 02:21:29
cryptography	Athi	11 Aug 2009 02:44:18
fun	Athi	12 Aug 2009 09:06:21
cryptography	Sushma D	03 Nov 2010 06:29:23
image invariant visual cryptography	Khawaja Rizwan	10 May 2011 06:24:12
cryptography	nagappn	12 Feb 2012 13:08:22