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Pseudo-Hadamard Transformation-Based Image Encryption Scheme

  • S. N. Prajwalasimha
Chapter
Part of the Studies in Computational Intelligence book series (SCI, volume 771)

Abstract

In this chapter, a pseudo-Hadamard transform (PHT)-based image encryption technique has been proposed. Images are characterized by high interpixel redundancy. This can be varied in two phases: transformation and substitution. Correlation between adjacent pixels can be varied by the transformation phase. Pixel value variation can be made in the substitution phase. Encryption of some standard images has been done, and performance analysis is made based on correlation, entropy, mean square errors, number of pixel change rate (NPCR) and unified average changing intensity (UACI). The results obtained are comparatively better considering those of existing algorithms.

Keywords

Encryption Redundancy Transformation Substitution 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of ECEATME College of EngineeringMysoreIndia

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