...

ourdb/src/location.rs

@@ -27,10 +27,10 @@ impl Location {
 
         // Create padded bytes
         let mut padded = vec![0u8; keysize as usize];
-        let start_idx = keysize as usize - bytes.len();
-        if start_idx < 0 {
+        if bytes.len() > keysize as usize {
             return Err(Error::InvalidOperation("Input bytes exceed keysize".to_string()));
         }
+        let start_idx = keysize as usize - bytes.len();
 
         for (i, &b) in bytes.iter().enumerate() {
             if i + start_idx < padded.len() {