Java Security

I am working on an application that sends encrypted data over the network using Blowfish. I developed a simple server and client to test and I getting this error when I try to decrypt the cypher in the server. Here is what I do:

This happens on the client side:

I encrypt my message with this method

public byte[] encryptedMessage() throws Exception{
        
        KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
        
        keyGenerator.init(128);	
        
        Key key = keyGenerator.generateKey();
         
        Cipher cipher = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
        
        cipher.init(Cipher.ENCRYPT_MODE, key);
        
        byte[] plaintext = getMessage().getBytes("UTF8");
        
        byte[] ciphertext = cipher.doFinal(plaintext);
        
        return ciphertext;
        
    }

Then send it to the server like this:

//get my cypher from the method shown before
cipher = mc.encryptedMessage();
//put the cypher in this simple object           
InformationShared cipherToSend = new InformationShared(cipher.length);
cipherToSend.setMessage(cipher);

//Send it accross through the network
Socket socket =  new Socket("127.0.0.1",8085);
ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
out.writeObject(cipherToSend);

This is what happens in the server side:

//Get the incoming object
ObjectInputStream in = new ObjectInputStream( incoming.getInputStream() );
//downcast the object
InformationShared cipherIn = (InformationShared)in.readObject();
//decypher the message  in the decypher method              
String result = decypher(cipherIn.getMessage());

//This is the decipher method
public String decypher(byte cipherIn[]) throws Exception{

           KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
           keyGenerator.init(128);	// need to initialize with the keysize
           Key key = keyGenerator.generateKey();
           
           Cipher ciph = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
           ciph.init(Cipher.DECRYPT_MODE, key);
           
           // Perform the decryption
           byte[] decryptedText = ciph.doFinal(cipherIn);
           String output = new String(decryptedText,"UTF8");;
           return output;
        }

The error happens in the decypher method in this line:

byte[] decryptedText = ciph.doFinal(cipherIn);

Thanks for any help!