Table 5.

Metric measures for Eggs (grayscale).

Evaluation	ECC with	ECC with	ElGamal with Double
Metrics	Hill Cipher	AES	Playfair Cipher
Encryption Time (s)	0.32507	2.53642	0.13366
Decryption Time (s)	0.35904	2.52728	0.16954
Entropy	(7.98534, 7.98371, 7.98925)	(7.99652, 7.99585, 7.99638)	(7.85019, 7.87646, 7.90649)
Mean Squared Error (MSE) in decrypted image	(0, 0, 0)	(0, 0, 0)	(0, 0, 0)
PSNR (dB)	(9.41053, 8.95845, 8.74391)	(9.39128, 8.98602, 8.7218)	(9.86406, 9.45456, 9.069)
NPCR (%)	(96.67358, 96.81854, 96.99249)	(99.646, 99.63684, 99.62463)	(94.05823, 94.08875, 94.1803)
UACI (%)	(27.87552, 29.14918, 29.73587)	(28.15297, 29.32043, 30.11092)	(26.05094, 27.09534, 28.17803)