diff --git a/src/main/java/com/sunyard/sge/database/SydApiSM4.java b/src/main/java/com/sunyard/sge/database/SydApiSM4.java
index 13384be..71d5528 100644
--- a/src/main/java/com/sunyard/sge/database/SydApiSM4.java
+++ b/src/main/java/com/sunyard/sge/database/SydApiSM4.java
@@ -12,6 +12,7 @@ public class SydApiSM4 {
     private int iPkgNum = 1;
     private int iFlag;
     private boolean is_finished = false;
+    private byte[] dataResult = new byte[0];
     ByteBuffer sourceWrap = ByteBuffer.wrap(new byte[0]);
 
 
@@ -23,6 +24,7 @@ public class SydApiSM4 {
 
     public byte[] update(byte[] pcData) {
         this.pcdataResult = pcData;
+//        this.dataResult = pcData;
         if (null == pcData || pcData.length == 0) {
             return new byte[0];
         }
@@ -64,19 +66,19 @@ public class SydApiSM4 {
         } else {
             if (16 > pcData.length + sourceWrap.array().length) {
                 ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
-                bufferResult.put(SydSM4Mac.bytebuffer2ByteArray(sourceWrap));
+                bufferResult.put(sourceWrap.array());
                 bufferResult.put(pcData);
                 sourceWrap = bufferResult;
                 return new byte[0];
             } else if ((pcData.length + sourceWrap.array().length) % 16 == 0) {
                 ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
-                bufferResult.put(SydSM4Mac.bytebuffer2ByteArray(sourceWrap));
+                bufferResult.put(sourceWrap.array());
                 bufferResult.put(pcData);
                 byte[] bytes = SydSM4Mac.bytebuffer2ByteArray(bufferResult);
                 return api.SYD_SM4_LongData(iKeyIndex, bytes, iPkgNum, iFlag);
             } else {
                 ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
-                bufferResult.put(SydSM4Mac.bytebuffer2ByteArray(sourceWrap));
+                bufferResult.put(sourceWrap.array());
                 bufferResult.put(pcData);
                 byte[] bytes = SydSM4Mac.bytebuffer2ByteArray(bufferResult);
                 ByteBuffer buffer = ByteBuffer.wrap(bytes);
@@ -107,8 +109,8 @@ public class SydApiSM4 {
             this.iPkgNum = 3;
         }
 
-        byte[] bytes = api.SYD_SM4_LongData(iKeyIndex, pcdataResult, iPkgNum, iFlag);
-//        sourceWrap = null;
+        byte[] bytes = api.SYD_SM4_LongData(iKeyIndex,sourceWrap.array(), iPkgNum, iFlag);
+        sourceWrap = null;
         return bytes;
     }
 
diff --git a/src/main/java/com/sunyard/sge/database/SydSM4Mac.java b/src/main/java/com/sunyard/sge/database/SydSM4Mac.java
index 06fc0a1..4ea3009 100644
--- a/src/main/java/com/sunyard/sge/database/SydSM4Mac.java
+++ b/src/main/java/com/sunyard/sge/database/SydSM4Mac.java
@@ -21,7 +21,7 @@ public class SydSM4Mac {
         this.api = api;
         this.iKeyIndex = iKeyIndex;
         this.pcProcData = pcProcData;
-        this.pcMac=pcMac;
+//        this.pcMac=pcMac;
     }
 
     public SydSM4Mac(SydApi api) {
@@ -80,16 +80,14 @@ public class SydSM4Mac {
         } else {
             if (16 > (pcData.length + sourceWrap.array().length)) {
                 ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + pcData.length);
-                bufferResult.put(sourceWrap);
+                bufferResult.put(sourceWrap.array());
                 bufferResult.put(pcData);
                 sourceWrap = bufferResult;
             }
 
             else  if (16<=(pcData.length + sourceWrap.array().length)&&(pcData.length + sourceWrap.array().length) % 16 == 0) {
-                int k2 = sourceWrap.array().length+pcData.length;
                 ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + pcData.length);
-                byte[] bytes1 = bytebuffer2ByteArray(sourceWrap);
-                bufferResult.put(bytes1);
+                bufferResult.put(sourceWrap.array());
                 bufferResult.put(pcData);
                 byte[] bytes = SydSM4Mac.bytebuffer2ByteArray(bufferResult);
                 if (null == this.pcMac || "".equals(this.pcMac)) {
@@ -103,7 +101,7 @@ public class SydSM4Mac {
                 }
             } else {
                 ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + length);
-                bufferResult.put(bytebuffer2ByteArray(sourceWrap));
+                bufferResult.put(sourceWrap.array());
                 bufferResult.put(pcData);
                 byte[] bytes = SydSM4Mac.bytebuffer2ByteArray(bufferResult);
                 ByteBuffer buffer = ByteBuffer.wrap(bytes);
@@ -142,10 +140,10 @@ public class SydSM4Mac {
             this.iPkgNum = 3;
         }
         if (null == this.pcMac || "".equals(this.pcMac)) {
-            LongDataReturn<String, String> stringStringLongDataReturn = api.SYD_SM4Mac_LongData(iKeyIndex, this.pcdataResult, iPkgNum, pcProcData);
+            LongDataReturn<String, String> stringStringLongDataReturn = api.SYD_SM4Mac_LongData(iKeyIndex, this.sourceWrap.array(), iPkgNum, pcProcData);
             return stringStringLongDataReturn;
         } else {
-            LongDataReturn<String, Boolean> stringBooleanLongDataReturn = api.SYD_SM4Mac_LongData(iKeyIndex, this.pcdataResult, iPkgNum, pcProcData, pcMac);
+            LongDataReturn<String, Boolean> stringBooleanLongDataReturn = api.SYD_SM4Mac_LongData(iKeyIndex, this.sourceWrap.array(), iPkgNum, pcProcData, pcMac);
             return stringBooleanLongDataReturn;
         }