test attack against random key

src/tea1_attack.rs

@@ -2,6 +2,7 @@
 // Implementation of the Midnight Blue Labs TEA1 attack (CVE-2022-24402)
 use crate::tea1::*;
 use rayon::prelude::*;
+use rand::Rng;
 
 /// Returns true if the candidate key_reg produces the exact known keystream prefix
 /// Early aborts on the first mismatch
@@ -60,9 +61,12 @@ pub fn recover_tea1_keyreg(frame_number: u32, known_keystream: &[u8]) -> Option<
 }
 
 pub fn tea1_attack_example() {
-    let key0 = [0x00u8; 10];
-    let reduced0 = init_key_register(&key0); // 0xc24e273b
-    assert_eq!(reduced0, 0xc24e273b);
+    let mut rng = rand::rng();
+
+    let mut key0 = [0u8; 10];
+    rng.fill_bytes(&mut key0);
+
+    let reduced0 = init_key_register(&key0);
 
     let frame0 = 0x1111_1111u32;
     let ks0 = tea1_keystream(frame0, &key0, 4);
@@ -71,5 +75,5 @@ pub fn tea1_attack_example() {
     assert_eq!(recovered0, Some(reduced0));
 
     println!("Recovered key successfully (0x{:08x})", recovered0.unwrap());
-    println!("original key               (0x{:08x})", reduced0);
+    println!("original key register      (0x{:08x})", reduced0);
 }