simple_hider/
lib.rs

1//! This is the documentation for the simple_hider library.
2//!
3//! # Examples
4//!
5//! ```
6//! use simple_hider::{hide, unhide};
7//!
8//! let text = "Hello";
9//! let salt = "salt";
10//! let encrypted = hide(salt, text);
11//! let decrypted = unhide(salt, encrypted);
12//!
13//! assert_eq!(text, decrypted);
14//! ```
15
16// The text_to_chars() function takes a string as an argument and returns an array of the Unicode character codes of each character in the string.
17fn text_to_chars(text: &str) -> Vec<u32> {
18    text.chars().map(|c| c as u32).collect()
19}
20
21// The apply_salt_to_char() function takes a character code as an argument and returns the result of applying the bitwise XOR operator to the character code and the salt.
22fn apply_salt_to_char(code: u32, salt: &str) -> u32 {
23    let salt_chars = text_to_chars(salt);
24    salt_chars.iter().fold(code, |acc, &b| acc ^ b)
25}
26
27// The hide() function takes a salt and a text as arguments and returns the encoded text.
28pub fn hide(salt: &str, text: &str) -> String {
29    // The byte_hex() function takes a number as an argument and returns the hexadecimal representation of that number as a string.
30    fn byte_hex(n: u32) -> String {
31        format!("{:02x}", n)
32    }
33
34    let mut encoded = String::new();
35
36    for c in text.chars() {
37        let code = c as u32;
38        let code = apply_salt_to_char(code, salt);
39        encoded += &byte_hex(code);
40    }
41
42    return encoded
43}
44
45// The unhide() function takes a salt and an encoded text as arguments and returns the decoded text.
46pub fn unhide(salt: &str, encoded: &str) -> String {
47    let mut decoded = "".to_string();
48
49    for hex in encoded.as_bytes().chunks(2) {
50        let code = u32::from_str_radix(std::str::from_utf8(hex).unwrap(), 16).unwrap();
51        let code = apply_salt_to_char(code, salt);
52        decoded += &std::char::from_u32(code).unwrap().to_string();
53    }
54
55    return decoded
56}
simple_hider/lib.rs

simple_hider/
lib.rs
