Table 6. Comparison of pixel difference between images encrypted by keys with one-bit difference.

Image	NPCR (%)			UACI (%)
	Red	Green	Blue	Red	Green	Blue
Lena	99.591	99.593	99.629	33.349	33.51	33.561
Vegetables	99.637	99.611	99.605	33.396	33.549	33.583
City gate tower	99.608	99.644	99.583	33.429	33.537	33.340
Elephantine mountain	99.632	99.562	99.628	33.260	33.450	33.349
Pandas	99.634	99.634	99.615	33.498	33.529	33.530
Peony	99.614	99.623	99.628	33.462	33.505	33.522