Data commit

Task/Chaocipher/Rust/chaocipher.rust

@@ -0,0 +1,32 @@
+const LEFT_ALPHABET_CT: &str = "HXUCZVAMDSLKPEFJRIGTWOBNYQ";
+const RIGHT_ALPHABET_PT: &str = "PTLNBQDEOYSFAVZKGJRIHWXUMC";
+const ZENITH: usize = 0;
+const NADIR: usize = 12;
+const SEQUENCE: &str = "WELLDONEISBETTERTHANWELLSAID";
+
+fn cipher(letter: &char, left: &String, right: &String) -> (usize, char) {
+    let pos = right.find(*letter).unwrap();
+    let cipher = left.chars().nth(pos).unwrap();
+    (pos, cipher)
+}
+
+fn main() {
+    let mut left = LEFT_ALPHABET_CT.to_string();
+    let mut right = RIGHT_ALPHABET_PT.to_string();
+
+    let ciphertext = SEQUENCE.chars()
+        .map(|letter| {
+            let (pos, cipher_char) = cipher(&letter, &left, &right);
+            left = format!("{}{}", &left[pos..], &left[..pos]);
+            left = format!("{}{}{}{}", &left[ZENITH..1], &left[2..NADIR+2], &left[1..2], &left[NADIR+2..]);
+            if pos != right.len() - 1 {
+                right = format!("{}{}", &right[pos + 1..], &right[..pos + 1]);
+            }
+            right = format!("{}{}{}{}", &right[ZENITH..2], &right[3..NADIR+2], &right[2..3], &right[NADIR+2..]);
+            cipher_char
+        })
+        .collect::<String>();
+
+    println!("Plaintext: {}", SEQUENCE);
+    println!("Ciphertext: {}", ciphertext);
+}