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.
Histogram of pixel distribution of plaintext image and ciphertext image of two test images. (a) Plaintext image peppers. (b) Histogram of plaintext image peppers. (c) Ciphertext image peppers. (d) Histogram of ciphertext image peppers. (e) Plaintext image cameraman. (f) Histogram of plaintext image cameraman. (g) Ciphertext image cameraman. (h) Histogram of Ciphertext image cameraman.
