code: protected String getAlgorithm(JSONArray customInfoArray) {
          StringBuffer sb = new StringBuffer();
          for (int i = 0; i < customInfoArray.size(); i++) {
              JSONObject customInfo = (JSONObject) customInfoArray.get(i);
              sb.append("|").append(customInfo.get("name"));
          }
          return sb.toString();
      }
docs: Returns the message string of custom encryption name(s).
  
  @param customInfoArray JSONArray which contains the list of custom encryption information. Null is not expected.