Feature Based Encryption Technique for Securing Digital Image Data Based on FCA-Image Attributes and Visual Cryptography

Lossless pixel value encrypted images still maintains the some properties of their respective original plain images. Most of these cryptographic approaches consist of visual cryptographic techniques and pixel displacement approaches. These methods of cryptography are useful in cases as medical image...

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Bibliographic Details
Published inComputational Science and Its Applications - ICCSA 2015 Vol. 9158; pp. 712 - 724
Main Authors Kester, Quist-Aphetsi, Pascu, Anca Christine, Nana, Laurent, Gire, Sophie, Eghan, Jojo M., Quaynor, Nii Narku
Format Book Chapter
LanguageEnglish
Published Cham Springer International Publishing 19.06.2015
SeriesLecture Notes in Computer Science
Subjects
Computer Science
Concept Lattice
Encrypt Image
Formal Context
Image Encryption
Plain Image
digital image security
encryption technique
formal concept analysis
image structure lattice
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Summary:Lossless pixel value encrypted images still maintains the some properties of their respective original plain images. Most of these cryptographic approaches consist of visual cryptographic techniques and pixel displacement approaches. These methods of cryptography are useful in cases as medical image security where pixel expansion is avoided in both the encryption and decryption processes. In this paper we propose a hybrid cryptographic encryption approach by using features generated from digital images based on Galois lattice theory and a visual cryptographic technique based on RGB pixel displacement. The features extracted from a plain image and a lattice was generated which was then used to generate a key used to encrypt the plain image. At the end of the process, there was no pixel expansion and the arithmetic mean, the entropy as well as the Galois lattice of both ciphered and plain image remained the same. The features extracted from the plain image were the same as that of the ciphered image irrespective of pixel displacement that occurred, this makes our approach a suit-able basis for image encryption and storage as well as encrypted image indexing and searching based on pixel values. The implementation was done using Galicia, Lattice Miner and MATLAB..
ISBN:9783319214092
3319214098
ISSN:0302-9743
1611-3349
DOI:10.1007/978-3-319-21410-8_54