FPGA Implementation of Improved Security Approach for Medical Image Encryption and Decryption

Table 5

Comparative study of the average global entropy values.

Cryptosystem	Lena standard test image
Proposed model	7.99988
Existing AES	7.8693
Ref. [3]	7.9993
Ref. [38]	7.99932
Ref. [34]	7.9969
Ref. [35]	7.9989
Ref. [36]	7.9994
Ref. [9]	7.9975
Ref. [6]	7.9998
Ref. [8]	7.9973
Ref. [39]	7.9978
Ref. [40]	7.999329
Ref. [12]	Proposed 1: 7.998119
	Proposed 2: 7.997349
	Proposed 3: 7.997224
	Proposed 4: 7.997189
Ref. [13]	7.9980
Ref. [14]	7.9980
Ref. [15]	Proposed 1: 7.9984
	Proposed 2: 7.9985
Ref. [41]	7.99935
Ref. [42]	7.99935