diff --git a/src/main/java/com/reandroid/apk/CrcOutputStream.java b/src/main/java/com/reandroid/apk/CrcOutputStream.java
index b99d5f3f7..f03629677 100644
--- a/src/main/java/com/reandroid/apk/CrcOutputStream.java
+++ b/src/main/java/com/reandroid/apk/CrcOutputStream.java
@@ -15,17 +15,19 @@
   */
 package com.reandroid.apk;
 
+import com.reandroid.utils.CRCDigest;
+
 import java.io.IOException;
 import java.io.OutputStream;
-import java.util.zip.CRC32;
 
+@Deprecated
 public class CrcOutputStream extends OutputStream {
-    private final CRC32 crc;
+    private final CRCDigest crc;
     private long length;
     private long mCheckSum;
     public CrcOutputStream() {
         super();
-        this.crc = new CRC32();
+        this.crc = new CRCDigest();
     }
     public long getLength(){
         return length;
diff --git a/src/main/java/com/reandroid/apk/SingleJsonTableInputSource.java b/src/main/java/com/reandroid/apk/SingleJsonTableInputSource.java
index e6193425f..80ac01731 100644
--- a/src/main/java/com/reandroid/apk/SingleJsonTableInputSource.java
+++ b/src/main/java/com/reandroid/apk/SingleJsonTableInputSource.java
@@ -21,6 +21,7 @@
 import com.reandroid.arsc.chunk.TableBlock;
 import com.reandroid.json.JSONException;
 import com.reandroid.json.JSONObject;
+import com.reandroid.utils.CRCDigest;
 
 import java.io.*;
 
@@ -58,9 +59,9 @@ public long getLength() throws IOException{
     }
     @Override
     public long getCrc() throws IOException {
-        CrcOutputStream outputStream=new CrcOutputStream();
+        CRCDigest outputStream = new CRCDigest();
         this.write(outputStream);
-        return outputStream.getCrcValue();
+        return outputStream.getValue();
     }
     public TableBlock getTableBlock() throws IOException{
         if(mCache != null){
diff --git a/src/main/java/com/reandroid/apk/SplitJsonTableInputSource.java b/src/main/java/com/reandroid/apk/SplitJsonTableInputSource.java
index 7e450210b..e00681c93 100644
--- a/src/main/java/com/reandroid/apk/SplitJsonTableInputSource.java
+++ b/src/main/java/com/reandroid/apk/SplitJsonTableInputSource.java
@@ -17,6 +17,7 @@
 
 import com.reandroid.archive.BlockInputSource;
 import com.reandroid.arsc.chunk.TableBlock;
+import com.reandroid.utils.CRCDigest;
 
 import java.io.*;
 
@@ -54,9 +55,9 @@ public long getLength() throws IOException{
     }
     @Override
     public long getCrc() throws IOException {
-        CrcOutputStream outputStream=new CrcOutputStream();
+        CRCDigest outputStream = new CRCDigest();
         this.write(outputStream);
-        return outputStream.getCrcValue();
+        return outputStream.getValue();
     }
     public TableBlock getTableBlock() throws IOException {
         if(mCache!=null){
diff --git a/src/main/java/com/reandroid/apk/xmlencoder/XMLEncodeSource.java b/src/main/java/com/reandroid/apk/xmlencoder/XMLEncodeSource.java
index 49b200240..6ae9280ca 100644
--- a/src/main/java/com/reandroid/apk/xmlencoder/XMLEncodeSource.java
+++ b/src/main/java/com/reandroid/apk/xmlencoder/XMLEncodeSource.java
@@ -1,10 +1,10 @@
 package com.reandroid.apk.xmlencoder;
 
 import com.reandroid.apk.APKLogger;
-import com.reandroid.apk.CrcOutputStream;
 import com.reandroid.archive.ByteInputSource;
 import com.reandroid.arsc.chunk.PackageBlock;
 import com.reandroid.arsc.chunk.xml.ResXmlDocument;
+import com.reandroid.utils.CRCDigest;
 import com.reandroid.utils.io.IOUtil;
 import com.reandroid.xml.source.XMLParserSource;
 import org.xmlpull.v1.XmlPullParser;
@@ -12,7 +12,6 @@
 
 import java.io.IOException;
 import java.io.OutputStream;
-import java.util.zip.CRC32;
 
 public class XMLEncodeSource extends ByteInputSource {
     private final PackageBlock packageBlock;
@@ -31,7 +30,7 @@ public long getLength() throws IOException {
     }
     @Override
     public long getCrc() throws IOException{
-        CRC32 crc32 = new CRC32();
+        CRCDigest crc32 = new CRCDigest();
         byte[] bytes = getArray();
         crc32.update(bytes, 0, bytes.length);
         return crc32.getValue();
diff --git a/src/main/java/com/reandroid/archive/BlockInputSource.java b/src/main/java/com/reandroid/archive/BlockInputSource.java
index 5a5a2ab2f..ffd27dc0f 100644
--- a/src/main/java/com/reandroid/archive/BlockInputSource.java
+++ b/src/main/java/com/reandroid/archive/BlockInputSource.java
@@ -15,9 +15,9 @@
  */
 package com.reandroid.archive;
 
-import com.reandroid.apk.CrcOutputStream;
 import com.reandroid.arsc.base.Block;
 import com.reandroid.arsc.base.BlockRefresh;
+import com.reandroid.utils.CRCDigest;
 
 import java.io.IOException;
 import java.io.OutputStream;
@@ -51,9 +51,9 @@ public long getLength() throws IOException{
     @Override
     public long getCrc() throws IOException{
         Block block = getBlock();
-        CrcOutputStream outputStream=new CrcOutputStream();
+        CRCDigest outputStream = new CRCDigest();
         block.writeBytes(outputStream);
-        return outputStream.getCrcValue();
+        return outputStream.getValue();
     }
     @Override
     public long write(OutputStream outputStream) throws IOException {
diff --git a/src/main/java/com/reandroid/archive/InputSource.java b/src/main/java/com/reandroid/archive/InputSource.java
index 75ffcbef1..721ec2fd4 100644
--- a/src/main/java/com/reandroid/archive/InputSource.java
+++ b/src/main/java/com/reandroid/archive/InputSource.java
@@ -17,13 +17,13 @@
 
 import com.reandroid.arsc.chunk.TableBlock;
 import com.reandroid.arsc.chunk.xml.AndroidManifestBlock;
+import com.reandroid.utils.CRCDigest;
 import com.reandroid.utils.CompareUtil;
 import com.reandroid.utils.StringsUtil;
 import com.reandroid.utils.io.FileUtil;
 
 import java.io.*;
 import java.util.Comparator;
-import java.util.zip.CRC32;
 
 public abstract class InputSource {
     private final String name;
@@ -174,7 +174,7 @@ public String toString(){
     private void calculateCrc() throws IOException {
         InputStream inputStream=openStream();
         long length=0;
-        CRC32 crc = new CRC32();
+        CRCDigest crc = new CRCDigest();
         int bytesRead;
         byte[] buffer = new byte[1024*64];
         while((bytesRead = inputStream.read(buffer)) != -1) {
diff --git a/src/main/java/com/reandroid/archive/io/CountingInputStream.java b/src/main/java/com/reandroid/archive/io/CountingInputStream.java
index 95c3fa359..282a5498e 100644
--- a/src/main/java/com/reandroid/archive/io/CountingInputStream.java
+++ b/src/main/java/com/reandroid/archive/io/CountingInputStream.java
@@ -15,25 +15,25 @@
  */
 package com.reandroid.archive.io;
 
+import com.reandroid.utils.CRCDigest;
 import com.reandroid.utils.HexUtil;
 
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.zip.CRC32;
 
 public class CountingInputStream<T extends InputStream> extends InputStream {
     private final T inputStream;
-    private final CRC32 crc;
+    private final CRCDigest crc;
     private long size;
     private long mCheckSum;
     private boolean mFinished;
     public CountingInputStream(T inputStream, boolean disableCrc){
         this.inputStream = inputStream;
-        CRC32 crc32;
+        CRCDigest crc32;
         if(disableCrc){
             crc32 = null;
         }else {
-            crc32 = new CRC32();
+            crc32 = new CRCDigest();
         }
         this.crc = crc32;
     }
diff --git a/src/main/java/com/reandroid/archive/io/CountingOutputStream.java b/src/main/java/com/reandroid/archive/io/CountingOutputStream.java
index c887cd078..c0a1b9d9a 100644
--- a/src/main/java/com/reandroid/archive/io/CountingOutputStream.java
+++ b/src/main/java/com/reandroid/archive/io/CountingOutputStream.java
@@ -15,23 +15,24 @@
  */
 package com.reandroid.archive.io;
 
+import com.reandroid.utils.CRCDigest;
+
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.util.zip.CRC32;
 
 public class CountingOutputStream<T extends OutputStream> extends OutputStream {
     private final T outputStream;
-    private CRC32 crc;
+    private CRCDigest crc;
     private long size;
     private boolean mClosed;
     public CountingOutputStream(T outputStream, boolean disableCrc){
         this.outputStream = outputStream;
-        CRC32 crc32;
+        CRCDigest crc32;
         if(disableCrc){
             crc32 = null;
         }else {
-            crc32 = new CRC32();
+            crc32 = new CRCDigest();
         }
         this.crc = crc32;
     }
@@ -42,7 +43,7 @@ public CountingOutputStream(T outputStream){
     public void disableCrc(boolean disableCrc) {
         if(!disableCrc){
             if(crc == null){
-                this.crc = new CRC32();
+                this.crc = new CRCDigest();
             }
         }else{
             this.crc = null;
@@ -50,7 +51,7 @@ public void disableCrc(boolean disableCrc) {
     }
 
     public void reset(){
-        this.crc = new CRC32();
+        this.crc = new CRCDigest();
         this.size = 0L;
     }
     public T getOutputStream() {