Table 8 Chosen plain-text analysis of full-black and full-white images.

From: An efficient medical data encryption scheme using selective shuffling and inter-intra pixel diffusion IoT-enabled secure E-healthcare framework

Image

Original image entropy

Cipher image entropy

Diagonal correlation

Vertical correlation

Horizontal correlation

NPCR

Full_Black

0

7.9989

0.0008

0.0001

− 0.0003

99.62

Full_White

0

7.9991

− 0.0011

0.0019

− 0.0002

99.62

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