Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Correlation between plaintext and encrypted images in different directions. (a) vertical direction of original image; (b) horizontal direction of original image; (c) diagonal direction of original image; (d) vertical direction of encrypted image; (e) horizontal direction of encrypted image; (f) diagonal direction of encrypted image.
