How to use

decode

method

in

com.novoda.Base64

/**
 * Decodes Base64 content in byte array format and returns
 * the decoded byte array.
 *
 * @param source The Base64 encoded data
 * @return decoded data
 * @since 1.3
 * @throws Base64DecoderException
 */
public static byte[] decode(byte[] source) throws Base64DecoderException {
 return decode(source, 0, source.length);
}

/**
 * Decodes web safe Base64 content in byte array format and returns
 * the decoded byte array.
 * Web safe encoding uses '-' instead of '+', '_' instead of '/'
 *
 * @param source the Base64 encoded data
 * @param off    the offset of where to begin decoding
 * @param len    the length of characters to decode
 * @return decoded data
 */
public static byte[] decodeWebSafe(byte[] source, int off, int len)
  throws Base64DecoderException {
 return decode(source, off, len, WEBSAFE_DECODABET);
}

/**
 * Decodes Base64 content in byte array format and returns
 * the decoded byte array.
 *
 * @param source the Base64 encoded data
 * @param off    the offset of where to begin decoding
 * @param len    the length of characters to decode
 * @return decoded data
 * @since 1.3
 * @throws Base64DecoderException
 */
public static byte[] decode(byte[] source, int off, int len)
  throws Base64DecoderException {
 return decode(source, off, len, DECODABET);
}

/**
 * Decodes data from Base64 notation.
 *
 * @param s the string to decode (decoded in default encoding)
 * @return the decoded data
 * @since 1.4
 */
public static byte[] decode(String s) throws Base64DecoderException {
 byte[] bytes = s.getBytes();
 return decode(bytes, 0, bytes.length);
}

  private byte[] getDecode(String encryption_subject) throws CryptException {

    try {
      return Base64.decode(encryption_subject);
    } catch (Base64DecoderException e) {
      throw new CryptException(e);
    }
  }
}