XOR_string.sh

gistfile1.txt

#!/bin/bash

# Function to XOR a string with a key
xor_string() {
    local string=$1
    local key=$2
    local result=""

    for ((i = 0; i < ${#string}; i++)); do
        local char=${string:i:1}
        local ascii_val=$(printf "%d" "'$char")
        local xor_val=$((ascii_val ^ key))
        local xor_char=$(printf "\\$(printf '%03o' "$xor_val")")
        result+="$xor_char"
    done

    echo "$result"
}

# Usage example
input_string="HELLO"
xor_key=50

encrypted_string=$(xor_string "$input_string" $xor_key)
echo "Encrypted: $encrypted_string"

decrypted_string=$(xor_string "$encrypted_string" $xor_key)
echo "Decrypted: $decrypted_string"