Make with colors

help:
        @# Green
        @tput setaf 2
        @echo "Usage: make [ all | clean ]"
        @echo "This script will encrypt 128 bit 0's plain text with 256 bit 0's key, "
        @echo "Using AES 256 ECB encryption scheme"
        @# color reset
        @tput sgr0

all:
        dd if=/dev/zero of=zeros_16B_128b.bin bs=16 count=1
        @# Yellow
        @tput setaf 3
        @echo "H = AES-256-ECB(0^128, K)"
        @echo "K: 256 bit 0's = 0^256"
        @# color reset
        @tput sgr0
        openssl aes-256-ecb -e -K 00 -nopad -in zeros_16B_128b.bin -out enc_zeros_16B_128b.bin -iter 10000
        @# Yellow
        @tput setaf 3
        xxd enc_zeros_16B_128b.bin
        @# color reset
        @tput sgr0

clean:
        rm *.bin