Java Security

I give up trying to figure this out. Any help would be apppreciated.

I am using this class to encrypt/decrypt:
http://www.infinity-design.com/code/Blowfish.java

Occaionally the decrypted data will contain garbled characters, occuring 8 in a row. It seems to depend on what key data is used.

Try this code and you will see what I mean:

try{
	Security.addProvider(new com.sun.crypto.provider.SunJCE());
	String data = "012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789";
	String keydata = "BW6v589SIg3i3zaEW47RcMZ+I+M=";

	System.out.println("Encrypting data: " + data);
	String encrypted = Blowfish.encrypt(data,keydata);
	String decrypted = Blowfish.decrypt(encrypted,keydata);
	System.out.println("Decrypted data:  " + decrypted);
}catch(Exception ex){
	System.out.println(ex.getMessage());
}

If the key changes the garbage chars go away and everything works.

Any ideas?