Research Article

Entropy-Based Block Scrambling Image Encryption Using DES Structure and Chaotic Systems

Table 4

Entropy of images.

LenaCameramanFingerprintAll white

Original image7.45326.90467.59450
Cipher image7.99767.99747.99777.9979
Ref. [35]7.99717.99717.99707.9970
Ref. [36]7.99657.99647.9962
Ref. [37]7.99687.9904