code: public Integer getKeySize() {
  		
  		if(keySize == null){
  			
  			switch (algorithm) {
  			case DES:
  				keySize = DEFAULT_DES_KEY_SIZE;
  				break;
  
  			default:
  				keySize = DEFAULT_AES_KEY_SIZE;
  				break;
  			}
  			
  		}
  		
  		return keySize;
  		
  	}
docs: Get the keysize. If no key size specified this will return the default
  key size.
  
  @return