diff --git a/c/ckb_auth.h b/c/ckb_auth.h
index 325e623..a42711a 100644
--- a/c/ckb_auth.h
+++ b/c/ckb_auth.h
@@ -120,19 +120,24 @@ typedef int (*ckb_auth_validate_t)(uint8_t auth_algorithm_id,
                                    uint32_t pubkey_hash_size);
 
 static uint8_t g_code_buff[300 * 1024] __attribute__((aligned(RISCV_PGSIZE)));
+static void* g_code_handle;
 
 int ckb_auth(CkbEntryType *entry, CkbAuthType *id, const uint8_t *signature,
              uint32_t signature_size, const uint8_t *message32) {
     int err = 0;
     if (entry->entry_category == EntryCategoryDynamicLinking) {
-        void *handle = NULL;
         size_t consumed_size = 0;
-        err = ckb_dlopen2(entry->code_hash, entry->hash_type, g_code_buff,
-                          sizeof(g_code_buff), &handle, &consumed_size);
-        if (err != 0) return err;
+
+        if (!g_code_handle) {
+            err = ckb_dlopen2(entry->code_hash, entry->hash_type, g_code_buff,
+                              sizeof(g_code_buff), &g_code_handle, &consumed_size);
+            if (err != 0) {
+                return err;
+            }
+        }
 
         ckb_auth_validate_t func =
-            (ckb_auth_validate_t)ckb_dlsym(handle, "ckb_auth_validate");
+            (ckb_auth_validate_t)ckb_dlsym(g_code_handle, "ckb_auth_validate");
         if (func == 0) {
             return CKB_INVALID_DATA;
         }
diff --git a/tests/auth-c-lock/auth_c_lock.c b/tests/auth-c-lock/auth_c_lock.c
index fd5d864..fa09113 100644
--- a/tests/auth-c-lock/auth_c_lock.c
+++ b/tests/auth-c-lock/auth_c_lock.c
@@ -221,6 +221,13 @@ int main() {
       break;
   }
 
-  return ckb_auth(&entry, &auth, lock_bytes_seg.ptr, lock_bytes_seg.size,
-                  msg32);
+  ret = ckb_auth(&entry, &auth, lock_bytes_seg.ptr, lock_bytes_seg.size, msg32);
+  if (ret) {
+      return ret;
+  }
+  ret = ckb_auth(&entry, &auth, lock_bytes_seg.ptr, lock_bytes_seg.size, msg32);
+  if (ret) {
+      return ret;
+  }
+  return 0;
 }
diff --git a/tests/auth-rust-lock/contracts/auth-rust-demo/src/entry.rs b/tests/auth-rust-lock/contracts/auth-rust-demo/src/entry.rs
index 46d5283..6668774 100644
--- a/tests/auth-rust-lock/contracts/auth-rust-demo/src/entry.rs
+++ b/tests/auth-rust-lock/contracts/auth-rust-demo/src/entry.rs
@@ -72,6 +72,7 @@ pub fn main() -> Result<(), Error> {
             .unwrap(),
     };
 
+    ckb_auth(&entry, &id, &signature, &message)?;
     ckb_auth(&entry, &id, &signature, &message)?;
 
     Ok(())