code: public void setInitializationVector(String initializationVector) {
  		try {
  			this.initializationVectorSpec = new IvParameterSpec(Base64.decodeBase64(initializationVector.getBytes("UTF-8")));
  		} catch (UnsupportedEncodingException e) {
  			throw new SymmetricEncryptionException("UTF-8 is an unsupported encoding on this platform", e);
  		}
  	}
docs: A base64 encoded representation of the raw byte array containing the
  initialization vector.
  
  @param initializationVector the initialization vector
  @throws SymmetricEncryptionException on runtime errors