First Commit - Source Code from Reply

dbcmnpsrc/FE/mnpdev/build/protection/run.cmd

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+@set JAVA_HOME=c:/bea/jdk142_04
+@echo off
+
+%JAVA_HOME%/bin/java -cp ".\sistemi" client.KeyGen %1

dbcmnpsrc/FE/mnpdev/build/protection/sistemi/client/KeyGen.java

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+package client;
+
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.SecretKey;
+import javax.crypto.SecretKeyFactory;
+import javax.crypto.spec.DESedeKeySpec;
+import javax.crypto.spec.PBEKeySpec;
+import javax.crypto.spec.PBEParameterSpec;
+
+import sun.misc.BASE64Decoder;
+import sun.misc.BASE64Encoder;
+
+import java.io.UnsupportedEncodingException;
+import java.security.Key;
+import java.security.spec.AlgorithmParameterSpec;
+import java.security.spec.KeySpec;
+import java.text.SimpleDateFormat;
+
+/**
+ * User: germano.giudici
+ * Date: 3-apr-2009
+ */
+public class KeyGen {
+		static final String TRIPLE_DES_CHIPER = "DESede/ECB/PKCS5Padding";
+		static final String TRIPLE_DES_KEY = "DESede";
+		static String passphrase = "generate a key of course";
+		static Key chiave3DES;
+    public static void main(String[] args) throws Exception {
+    	
+    	
+
+        try {
+            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy.MM.dd");
+            simpleDateFormat.parse(args[0]);
+            createKey();
+        } catch (Exception e) {
+            System.out.println("Uso: Inserire una data nella forma yyyy.MM.dd");
+            System.exit(0);
+        }
+
+        // Encrypt
+        String encrypted = cripta3DES(args[0]);
+        System.out.println("activationkey = " + encrypted);
+
+        // Decrypt
+        String decrypted = decripta3DES(encrypted);
+        System.out.println("data di scadenza = " + decrypted);
+        System.out.println("\n\ncopiare la activationkey nella sezione ATTIVAZIONE del file simulatore.properties");
+    }
+
+
+        
+        public static String cripta3DES(String value) throws Exception{
+            byte[] res = null;
+            Cipher cipher = Cipher.getInstance(TRIPLE_DES_CHIPER);
+            cipher.init(Cipher.ENCRYPT_MODE, chiave3DES);
+            byte[] val = value.getBytes();
+            res = new byte[cipher.getOutputSize(val.length)];
+            int size = cipher.update(val, 0, val.length, res, 0);
+            size += cipher.doFinal(res,size);
+            return toString(res,res.length);
+        }
+        
+        public static String decripta3DES(String value) throws Exception{
+            Cipher cipher = Cipher.getInstance(TRIPLE_DES_CHIPER);
+            cipher.init(Cipher.DECRYPT_MODE, chiave3DES);
+            return new String(cipher.doFinal(toByteArray(value)));
+          }
+        
+        private static void createKey() throws Exception{
+    			DESedeKeySpec spec = null;
+    			spec = new DESedeKeySpec(passphrase.getBytes());
+    			chiave3DES = SecretKeyFactory.getInstance(TRIPLE_DES_KEY).generateSecret(spec);
+  		}
+        
+        private static final byte[] toByteArray(String string) throws Exception{
+            BASE64Decoder decoder = new BASE64Decoder();
+            byte[] raw = decoder.decodeBuffer(string);
+            return raw;
+        }
+        
+        private static final String toString(byte[] bytes,int length) {
+            BASE64Encoder encoder = new BASE64Encoder();
+            String base64 = encoder.encode(bytes);
+            return base64;
+          }
+}