feat: v1.1.16

src/fido.rs

@@ -1,6 +1,7 @@
 use std::fmt;
 use std::sync::mpsc::{channel, Sender};
 use std::thread;
+use std::time::SystemTime;
 
 use authenticator::{RegisterResult, StatusUpdate};
 use base64::URL_SAFE_NO_PAD;
@@ -95,9 +96,9 @@ pub struct U2fV2Challenge {
 }
 
 impl U2fV2Challenge {
-    pub fn new_challenge(challenge_hex: Option<&str>, app_id: &str) -> XResult<U2fV2Challenge> {
+    pub fn new_challenge(challenge_hex: Option<&str>, app_id: &str, with_time_stamp_prefix: bool) -> XResult<U2fV2Challenge> {
         Ok(match challenge_hex {
-            None => U2fV2Challenge::new_random(app_id),
+            None => U2fV2Challenge::new_random(app_id, with_time_stamp_prefix),
             Some(challenge_hex) => {
                 let challenge_bytes = opt_result!(hex::decode(challenge_hex), "Decode challenge hex failed: {}");
                 let challenge = base64::encode_config(&challenge_bytes, base64::URL_SAFE_NO_PAD);
@@ -106,13 +107,20 @@ impl U2fV2Challenge {
         })
     }
 
-    pub fn new_random<S>(app_id: S) -> Self where S: Into<String> {
+    pub fn new_random<S>(app_id: S, with_time_stamp_prefix: bool) -> Self where S: Into<String> {
         let mut rng = rand::thread_rng();
         let mut rand_bytes = [0_u8; 32];
         for c in &mut rand_bytes {
             let b: u8 = rng.gen();
             *c = b;
         }
+        if with_time_stamp_prefix {
+            let timestamp = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_millis() as u64;
+            let timestamp_be_bytes = timestamp.to_be_bytes();
+            for i in 0..8 {
+                rand_bytes[i] = timestamp_be_bytes[i];
+            }
+        }
 
         let challenge = base64::encode_config(&rand_bytes, URL_SAFE_NO_PAD);
         Self::new(challenge, app_id)