enhance(spiral):统一螺旋算法的特性，如果起始位和长度检测失败，则直接返回密文。

src/encryption/spiral.rs

@@ -40,7 +40,7 @@ pub fn encrypt(data: String) -> String {
 /// - `data` 待解密的内容
 pub fn decrypt(data: String) -> Result<String, SpiralCipherError> {
     if !data.starts_with("[") || data.len() <= 21 {
-        return Err(SpiralCipherError::CorruptedCipherData);
+        return Ok(data);
     }
     let data = data[1..].to_string();
     let key_seed = data[0..20].to_string();

src/serial_code/hail.rs

@@ -69,13 +69,6 @@ impl HailSerialCodeAlgorithm {
         current_time - *HAIL_PERIOD_START
     }
 
-    /// 判断指定时间戳是否比已经存储的最后一次使用的时间戳要大。否则时间发生了回拨。
-    fn validate_timestamp(&self, timestamp: i64) -> bool {
-        let last_timestamp = self.last_timestamp.clone();
-        let last_timestamp = last_timestamp.lock().unwrap();
-        timestamp >= *last_timestamp
-    }
-
     /// 生成一个64位长整型序列ID。
     pub fn generate_serial(&self) -> i64 {
         let last_timestamp = self.last_timestamp.clone();
@@ -93,7 +86,7 @@ impl HailSerialCodeAlgorithm {
                     std::thread::sleep(time::Duration::from_secs(1));
                     continue;
                 }
-            } else if !self.validate_timestamp(timestamp) {
+            } else if timestamp < *last_timestamp {
                 std::thread::sleep(time::Duration::from_secs(1));
                 continue;
             }