scholarly journals ADVANCED COLOR COVERT IMAGE SHARING USING ARNOLD CAT MAP AND VISUAL CRYPTOGRAPHY

2019 ◽  
Vol 10 (1) ◽  
pp. 2031-2037
Author(s):  
B.K. Sapna ◽  
K.L. Sudha
Keyword(s):  
Visual Cryptography ◽  
Image Sharing ◽  
Arnold Cat Map

scholarly journals Image Encryption and Decryption using RSA Algorithm with Share Creation Techniques

2019 ◽  
Vol 8 (4) ◽  
pp. 2797-2800
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
Visual Cryptography ◽  
Color Images ◽  
Blue Color ◽  
Image Sharing ◽  
Rsa Algorithm ◽  
Encryption And Decryption ◽  
Is Value

visual cryptography system proposed a image encryption and decryption method. In the proposed method Red, Green, Blue color images using visual cryptography. In existing system is working for share created, it is encrypted separately by using visual secret share creation (VSS) algorithms. The proposed work is original images share1 and ahare2 created XOR-Based visual cryptography. This proposed schemes share1 encryption and share2 encryption included in RSA algorithm. The share1 and ahare2 decryption process is enable secret image sharing and then stacking. The proposed system is value calculate the PSNR and MSE formula and then image security using NPCR and UACI formula. The visual cryptography existing work to compare the proposed work and better results quality of RGB color images. The color image encryption and decryption using RSA algorithm and matlab coding.

scholarly journals Secure Secret Image Sharing Using Histogram Localization Based Block wise Methodology

2019 ◽  
Vol 8 (2) ◽  
pp. 186-191
Keyword(s):  
Data Security ◽  
Vision System ◽  
Visual Cryptography ◽  
Human Vision ◽  
Human Vision System ◽  
Image Size ◽  
Pixel Expansion ◽  
Secret Image ◽  
Image Sharing ◽  
Innovative Method

Various types of encryption techniques have been used for data security. Complex algorithms are followed for this purpose in most of the methods. Confidentiality is provided by a technique called visual cryptography excluding of any intricate computations and algorithms. In this paper, we put forward an innovative method called Histogram Localization based Blockwise (HLB) approach to solve pixel expansion problem at the same time it will increase the security and visual quality for highly confidential secret image which is in color. According to this method, the secret shares are generated based on the histogram and also the number of black pixels in the corresponding block. The image size of resultant shares is same as in the original secret image. These shares are distributed to participants, and human vision system is used for decryption purpose.

scholarly journals Implementation of Steganographic Algorithms Based on Exact Histogram Matching and Colour Visual Cryptography

2019 ◽  
Vol 9 (2) ◽  
pp. 519-522
Keyword(s):  
Data Transmission ◽  
Visual Cryptography ◽  
Secret Image Sharing ◽  
Secret Key ◽  
Secret Data ◽  
Image Sharing ◽  
Histogram Specification ◽  
Specification Method ◽  
Meaningful Share ◽  
Security Concern

Sensitive secret data transmission through internet has been of great security concern which can be overcome by steganographic methods achieved through secret image sharing. Two novel steganographic secret algorithms based on colour visual cryptography and exact histogram specification is proposed in the present study. The former approach combines colour visual cryptography with a secret key to produce less distorted meaningful share images. A specified histogram acts as the key for the second approach and provides better security and data obscurity compared to conventional approaches. A novel histogram specification method is also proposed which exactly matches the histogram of an image to a specified histogram

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