key8[ 6 ] = (byte) ( ( key[ 5 ] << 2 ) | ( ( key[ 6 ] & 0xFF ) >>> 6 ) );
        key8[ 7 ] = (byte) ( key[ 6 ] << 1 );
        for ( int i = 0; i < key8.length; i++ ) {
            key8[ i ] ^= Integer.bitCount(key8[ i ] ^ 1) & 1;
        }
        return key8;
    }

    /**
     * Default provider is BouncyCastleProvider.
     * For registering custom provider

      "search_log" : {
        "properties" : {
          "accessType" : {
            "type" : "keyword"
          },
          "clientIp" : {
            "type" : "keyword"
          },
          "hitCount" : {
            "type" : "long"
          },
          "hitCountRelation" : {
            "type" : "keyword"
          },
          "languages" : {
            "type" : "keyword"
          },

        "type": "date",
        "format": "date_optional_time"
      },
      "responseTime": {
        "type": "long"
      },
      "queryTime": {
        "type": "long"
      },
      "hitCount": {
        "type": "long"
      },
      "hitCountRelation": {
        "type": "keyword"
      },
      "queryOffset": {
        "type": "integer"
      },
      "queryPageSize": {

            doColumn("accessType");
        }

        public void columnClientIp() {
            doColumn("clientIp");
        }

        public void columnHitCount() {
            doColumn("hitCount");
        }

        public void columnHitCountRelation() {
            doColumn("hitCountRelation");
        }

        public void columnLanguages() {
            doColumn("languages");
        }

        return "SearchLog [searchFieldLogList=" + searchFieldLogList + ", headerList=" + headerList + ", userInfo=" + userInfo + ", fields="
                + fields + ", accessType=" + accessType + ", clientIp=" + clientIp + ", hitCount=" + hitCount + ", languages=" + languages
                + ", queryId=" + queryId + ", queryOffset=" + queryOffset + ", queryPageSize=" + queryPageSize + ", queryTime=" + queryTime