Issue key

Available in Classic and VPC

This document introduces examples of using the Issue CAPTCHA image key API.

Issue CAPTCHA image key

This section describes API examples for obtaining keys to generate CATPCHA images.

Java

The following is a Java-based sample code for the Issue CAPTCHA image key API.

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class APIExamCaptchaNkey {

    public static void main(String[] args) {
        String clientId = "YOUR_CLIENT_ID";//Application's client ID value";
        String clientSecret = "YOUR_CLIENT_SECRET";//Application's client secret value";
        try {
            String code = "0"; // Set to 0 for key issuance and 1 for CAPTCHA image comparison
            String apiURL = "https://naveropenapi.apigw.ntruss.com/captcha/v1/nkey?code=" + code;
            URL url = new URL(apiURL);
            HttpURLConnection con = (HttpURLConnection)url.openConnection();
            con.setRequestMethod("GET");
            con.setRequestProperty("X-NCP-APIGW-API-KEY-ID", clientId);
            con.setRequestProperty("X-NCP-APIGW-API-KEY", clientSecret);
            int responseCode = con.getResponseCode();
            BufferedReader br;
            if(responseCode==200) { // Successful call
                br = new BufferedReader(new InputStreamReader(con.getInputStream()));
            } else {  // Error occurred
                br = new BufferedReader(new InputStreamReader(con.getErrorStream()));
            }
            String inputLine;
            StringBuffer response = new StringBuffer();
            while ((inputLine = br.readLine()) != null) {
                response.append(inputLine);
            }
            br.close();
            System.out.println(response.toString());
        } catch (Exception e) {
            System.out.println(e);
        }
    }
}

Python

The following is a Python-based sample code for the Issue key API.

import os
import sys
import urllib.request
client_id = "YOUR_CLIENT_ID"
client_secret = "YOUR_CLIENT_SECRET"
code = "0"
url = "https://naveropenapi.apigw.ntruss.com/captcha/v1/nkey?code=" + code
request = urllib.request.Request(url)
request.add_header("X-NCP-APIGW-API-KEY-ID",client_id)
request.add_header("X-NCP-APIGW-API-KEY",client_secret)
response = urllib.request.urlopen(request)
rescode = response.getcode()
if(rescode==200):
    response_body = response.read()
    print(response_body.decode('utf-8'))
else:
    print("Error Code:" + rescode)

PHP

The following is a PHP-based sample code for the Issue key API.

<?php
  $client_id = "YOUR_CLIENT_ID";
  $client_secret = "YOUR_CLIENT_SECRET";
  $code = "0";
  $url = "https://naveropenapi.apigw.ntruss.com/captcha/v1/nkey?code=".$code;
  $is_post = false;
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_POST, $is_post);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $headers = array();
  $headers[] = "X-NCP-APIGW-API-KEY-ID: ".$client_id;
  $headers[] = "X-NCP-APIGW-API-KEY: ".$client_secret;
  curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
  $response = curl_exec ($ch);
  $status_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  echo "status_code:".$status_code."<br />";
  curl_close ($ch);
  if($status_code == 200) {
    echo $response;
  } else {
    echo "Error content:".$response;
  }
?>

JavaScript

The following is a JavaScript-based sample code for the Issue key API.

var express = require('express');
var app = express();
var client_id = 'YOUR_CLIENT_ID';
var client_secret = 'YOUR_CLIENT_SECRET';
var code = "0";
app.get('/captcha/nkey', function (req, res) {
   var api_url = 'https://naveropenapi.apigw.ntruss.com/captcha/v1/nkey?code=' + code;
   var request = require('request');
   var options = {
       url: api_url,
       headers: {'X-NCP-APIGW-API-KEY-ID':client_id, 'X-NCP-APIGW-API-KEY': client_secret}
    };
   request.get(options, function (error, response, body) {
     if (!error && response.statusCode == 200) {
       res.writeHead(200, {'Content-Type': 'text/json;charset=utf-8'});
       res.end(body);
     } else {
       res.status(response.statusCode).end();
       console.log('error = ' + response.statusCode);
     }
   });
 });
 app.listen(3000, function () {
   console.log('http://127.0.0.1:3000/captcha/nkey app listening on port 3000!');
 });

C#

The following is a C#-based sample code for the Issue key API.

using System;
using System.Net;
using System.Text;
using System.IO;

namespace NaverAPI_Guide
{
    public class APIExamCaptchaNkey
    {
        static void Main(string[] args)
        {
            string code = "0"; // Set to 0 for key issuance and 1 for CAPTCHA image comparison
            string url = "https://naveropenapi.apigw.ntruss.com/captcha/v1/nkey?code=" + code;
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Headers.Add("X-NCP-APIGW-API-KEY-ID", "YOUR-CLIENT-ID");
            request.Headers.Add("X-NCP-APIGW-API-KEY", "YOUR-CLIENT-SECRET");
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            string status = response.StatusCode.ToString();
            if(status == "OK")
            {
                Stream stream = response.GetResponseStream();
                StreamReader reader = new StreamReader(stream, Encoding.UTF8);
                string text = reader.ReadToEnd();
                Console.WriteLine(text);
            }
            else
            {
                Console.WriteLine("Error occurrence=" + status);
            }
        }
    }
}