diff --git a/Project/Src/com/cscn/Zuc256Util.java b/Project/Src/com/cscn/Zuc256Util.java
index 997dc09..d2ee8db 100644
--- a/Project/Src/com/cscn/Zuc256Util.java
+++ b/Project/Src/com/cscn/Zuc256Util.java
@@ -1,6 +1,7 @@
 package com.cscn;
 
 import javacard.framework.Util;
+import javacard.framework.JCSystem;
 
 /**
  * 辅助工具：装载/存储、位运算、线性变换、打印等。
@@ -295,7 +296,7 @@ public final class Zuc256Util {
 
 
         // 处理剩余8字节
-        byte[] src = JCSystem.makeTransientShortArray((short)8, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
+        byte[] src = JCSystem.makeTransientByteArray((short)8, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
         for (short i = 0; i < 8; i++) {
             src[i] = (byte) (input25Byte[(short)(17 + i)] & 0x3F);
         }