cargo fmt

src/tea1_attack.rs

@@ -32,8 +32,12 @@ const fn precompute_reorder_lut() -> [u8; 256] {
     let mut b: usize = 0;
     while b < 256 {
         let v = b as u8;
-        table[b] = ((v << 6) & 0x40) | ((v << 1) & 0x20) | ((v << 2) & 0x08)
+        table[b] = ((v << 6) & 0x40)
-                 | ((v >> 3) & 0x14) | ((v >> 2) & 0x01) | ((v >> 5) & 0x02)
+            | ((v << 1) & 0x20)
+            | ((v << 2) & 0x08)
+            | ((v >> 3) & 0x14)
+            | ((v >> 2) & 0x01)
+            | ((v >> 5) & 0x02)
             | ((v << 4) & 0x80);
         b += 1;
     }
@@ -66,13 +70,11 @@ fn precompute_sbox_seq(mut key_reg: u32, n_rounds: usize) -> [u8; MAX_ROUNDS] {
 /// Returns true if the candidate key_reg produces the exact known keystream prefix
 /// Early aborts on the first mismatch
 #[inline(always)]
-pub fn keyreg_matches_prefix(
+pub fn keyreg_matches_prefix(frame_number: u32, key_reg: u32, known_prefix: &[u8]) -> bool {
-    frame_number: u32,
-    key_reg: u32,
-    known_prefix: &[u8],
-) -> bool {
     let n = known_prefix.len();
-    if n == 0 { return true; }
+    if n == 0 {
+        return true;
+    }
 
     let total_rounds = 54 + 19 * (n - 1);
     let sbox_seq = precompute_sbox_seq(key_reg, total_rounds);