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diff --git a/bundles/org.simantics.utils/src/org/simantics/utils/bytes/BEString.java b/bundles/org.simantics.utils/src/org/simantics/utils/bytes/BEString.java
new file mode 100644
index 000000000..069a26981
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+++ b/bundles/org.simantics.utils/src/org/simantics/utils/bytes/BEString.java
@@ -0,0 +1,185 @@
+/*******************************************************************************
+ * Copyright (c) 2007- VTT Technical Research Centre of Finland.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+/*
+ * Created on Jan 21, 2005
+ * 
+ * Copyright Toni Kalajainen
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.simantics.utils.bytes;
+
+import org.simantics.utils.strings.EString;
+
+/**
+ * Byte array <-> string conversions
+ * 
+ * All conversions have length in the beginning (32-bit integer) and
+ * followed by actual chars 
+ * 
+ * the length is in Big Endian
+ *
+ * @author Toni Kalajainen
+ */
+public class BEString {
+
+	public static byte[] toBytes(String s) {
+		int size = s.length();
+		byte array[] = new byte[size + 4];
+		// write length
+		BEInt.write(size, array);
+		// write chars
+		for (int i=0; i<size; i++)
+			array[i+4] = (byte) (s.charAt(i) );
+		return array;
+	}
+	
+	/**
+	 * Write string to byte array
+	 * @param str the string
+	 * @param array the byte array
+	 * @param offset the offset
+	 */
+	public static void write(String str, byte array[], int offset)
+	{
+		int size = str.length();
+		if (offset+4+size>array.length)
+			throw new IndexOutOfBoundsException();		
+		BEInt.write(size, array, offset);
+		for (int i=0; i<size; i++)
+			array[i+4+offset] = (byte) (str.charAt(i) );			
+	}
+	
+	/**
+	 * Write string to byte array
+	 * @param str the string
+	 * @param array the byte array
+	 * @param offset the offset
+	 */
+	public static void write(String str, byte array[])
+	{
+		int size = str.length();
+		if (4+size>array.length)
+			throw new IndexOutOfBoundsException();		
+		BEInt.write(size, array);
+		for (int i=0; i<size; i++)
+			array[i+4] = (byte) (str.charAt(i) );			
+	}
+	
+	public static String toString(byte array[], int offset) {
+		if (offset+4>array.length)
+			throw new IndexOutOfBoundsException();
+		// read size
+		int size = BEInt.toInt(array, offset);
+		if (offset+4+size>array.length)
+			throw new IndexOutOfBoundsException();
+		// read chars
+		//return new String(array, 4+offset, size);
+		char chars[] = new char[size];
+		for (int i=0; i<size; i++)
+			chars[i] = (char) (array[i+4+offset] & 0xff);	
+		return new String(chars);
+	}
+	
+	public static String toString(byte array[]) {
+		if (4>array.length)
+			throw new IndexOutOfBoundsException();
+		// read size
+		int size = BEInt.toInt(array);
+		if (4+size>array.length)
+			throw new IndexOutOfBoundsException();
+		// read chars
+		//return new String(array, 4, size);
+		char chars[] = new char[size];
+		for (int i=0; i<size; i++)
+			chars[i] = (char) (array[i+4] & 0xff);	
+		return new String(chars);
+	}
+	
+	/**
+	 * Big Endian hex
+	 * @param value
+	 * @param decimals
+	 * @return
+	 */
+	public static String intToHex(int value, int decimals) {
+		String result="";		
+		for (int i=0; i<decimals; i++) {
+			result += EString.HEX_VALUES[(value>>4) & 0xF];
+			result += EString.HEX_VALUES[value & 0xF];
+			value = value >> 8;			
+		}		
+		return result;
+	}	
+	
+	public static void main(String[] args) {
+		String value = "STRING 01234"+(char)(128)+(char)(129)+(char)(255);
+		
+		int X = 500;
+		System.out.println(X+" = "+intToHex(X, 4)); 		
+		
+		byte array[] = toBytes(value);			
+		System.out.print(value);
+		System.out.print(" = ");
+		printByteArray(array);
+		System.out.println();
+		
+		write(value, array);
+		System.out.print(value);
+		System.out.print(" = ");
+		printByteArray(array);
+		System.out.println();
+		
+		write(value, array, 0);
+		System.out.print(value);
+		System.out.print(" = ");
+		printByteArray(array);
+		System.out.println();
+		
+		value = toString(array, 0);
+		printByteArray(array);
+		System.out.print(" = ");
+		System.out.print(value);
+		System.out.println();
+				
+		value = toString(array);
+		printByteArray(array);
+		System.out.print(" = ");
+		System.out.print(value);
+		System.out.println();
+		
+		array = toBytes(value);			
+		System.out.print(value);
+		System.out.print(" = ");
+		printByteArray(array);
+		System.out.println();
+		
+						
+	}
+	
+	public static void printByteArray(byte array[]) {
+		for (int i=0; i<array.length; i++) {
+			System.out.print(array[i] & 0xff);
+			if (i<array.length-1) 
+				System.out.print(",");
+		}
+	}	
+}