Image Encryption using Edge Map and Key Image

Shrija Somaraj   and Mohammed Ali Hussain

doi:10.17485/ijst/2017/v10i4/110673

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Image Encryption using Edge Map and Key Image

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2017/v10i4/110673

Year: 2017, Volume: 10, Issue: 4, Pages: 1-4

Original Article

Image Encryption using Edge Map and Key Image

Shrija Somaraj^1* and Mohammed Ali Hussain²

¹Research and Development Centre, Bharathiar University, Coimbatore - 641046, Tamil Nadu, India; [email protected] ²Department of Electronics and Computer Engineering, KL University, Guntur - 522502, Andhra Pradesh, India; [email protected]

*Author for the correspondence:
Shrija Somaraj
Research and Development Centre, Bharathiar University, Coimbatore - 641046, Tamil Nadu, India; [email protected]

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objective: An Image Encryption algorithm is proposed which uses an image as key and concept of Edge Map for Encryption. Method/Analysis: The proposed algorithm uses gradient operators like Sobel, Roberts, Prewitt and Canny edge detectors for generating the edge map of key image and which is used for encrypting the original image with xor operation. Findings: The encrypted image shows remarkable difference from the actual image which is shown in the histogram analysis and other statistical tests. Conclusion/Applications: The proposed algorithm achieves considerable level of encryption, which makes it suitable to be used in different applications. It is used for protection of images against various kinds of common attacks like brute force attacks.

Keywords: Cryptanalysis, Edge Map, Gradient Operators, Histogram Analysis, Image Encryption, Key Image