写基础Applet，试图测试加解密正确性

Project/Src/com/cscn/Zuc256EncryptCtx.java

@@ -1,6 +1,7 @@
 package com.cscn;
 
 import javacard.framework.JCSystem;
+import javacard.framework.Util;
 
 import static com.cscn.Zuc256Core.zuc256GenerateKeystream;
 import static com.cscn.Zuc256Core.zuc256GenerateKeyword;
@@ -56,7 +57,9 @@ public final class Zuc256EncryptCtx {
 //            int copy = Math.min(inlen, need);
             short copy = (short)((inlen < need) ? inlen : need);
 
-            System.arraycopy(in, 0, this.buf, this.buflen, copy);
+            // 替代 System.arraycopy(in, 0, this.buf, this.buflen, copy);
+            Util.arrayCopyNonAtomic(in, (short)0, this.buf, this.buflen, copy);
+
             this.buflen += copy;
 
             // 调整输入指针和长度
@@ -152,7 +155,9 @@ public final class Zuc256EncryptCtx {
 
         // 缓存剩余不足4字节的数据
         if (inlen > 0) {
-            System.arraycopy(in, 0, this.buf, 0, inlen);
+            // 等价于 System.arraycopy(in, 0, this.buf, 0, inlen);
+            Util.arrayCopyNonAtomic(in, (short)0, this.buf, (short)0, inlen);
+
             this.buflen = inlen;
         }
     }
@@ -186,6 +191,7 @@ public final class Zuc256EncryptCtx {
         }
 
         this.buflen = 0;
+
 //        Arrays.fill(this.state.LFSR, 0);
         // LFSR 全部清零（高低位数组各 16 个元素）
         for (short i = 0; i < 16; i++) {
@@ -193,6 +199,7 @@ public final class Zuc256EncryptCtx {
             this.state.LFSR_hi[i] = 0;
         }
 
+
 //        this.state.R1 = 0;
 //        this.state.R2 = 0;
 // R1、R2 清零