作者: S. N. Prajwalasimha
DOI: 10.1007/978-981-10-8797-4_58
关键词: Encryption 、 Entropy (information theory) 、 Pixel 、 Mathematics 、 Correlation 、 Algorithm 、 Hadamard transform 、 Mean square
摘要: 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 the phase. Pixel value variation made substitution Encryption of some standard images done, performance analysis is based on correlation, entropy, mean square errors, number pixel change rate (NPCR) unified average changing intensity (UACI). The results obtained comparatively better considering those existing algorithms.