[java] Java HTTPS 클라이언트 인증서 인증

메이븐 pom.xml :

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>some.examples</groupId>
    <artifactId>sslcliauth</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>sslcliauth</name>
    <dependencies>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.4</version>
        </dependency>
    </dependencies>
</project>

자바 코드 :

package some.examples;

import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.net.ssl.SSLContext;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.apache.http.entity.InputStreamEntity;

public class SSLCliAuthExample {

private static final Logger LOG = Logger.getLogger(SSLCliAuthExample.class.getName());

private static final String CA_KEYSTORE_TYPE = KeyStore.getDefaultType(); //"JKS";
private static final String CA_KEYSTORE_PATH = "./cacert.jks";
private static final String CA_KEYSTORE_PASS = "changeit";

private static final String CLIENT_KEYSTORE_TYPE = "PKCS12";
private static final String CLIENT_KEYSTORE_PATH = "./client.p12";
private static final String CLIENT_KEYSTORE_PASS = "changeit";

public static void main(String[] args) throws Exception {
    requestTimestamp();
}

public final static void requestTimestamp() throws Exception {
    SSLConnectionSocketFactory csf = new SSLConnectionSocketFactory(
            createSslCustomContext(),
            new String[]{"TLSv1"}, // Allow TLSv1 protocol only
            null,
            SSLConnectionSocketFactory.getDefaultHostnameVerifier());
    try (CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(csf).build()) {
        HttpPost req = new HttpPost("https://changeit.com/changeit");
        req.setConfig(configureRequest());
        HttpEntity ent = new InputStreamEntity(new FileInputStream("./bytes.bin"));
        req.setEntity(ent);
        try (CloseableHttpResponse response = httpclient.execute(req)) {
            HttpEntity entity = response.getEntity();
            LOG.log(Level.INFO, "*** Reponse status: {0}", response.getStatusLine());
            EntityUtils.consume(entity);
            LOG.log(Level.INFO, "*** Response entity: {0}", entity.toString());
        }
    }
}

public static RequestConfig configureRequest() {
    HttpHost proxy = new HttpHost("changeit.local", 8080, "http");
    RequestConfig config = RequestConfig.custom()
            .setProxy(proxy)
            .build();
    return config;
}

public static SSLContext createSslCustomContext() throws KeyStoreException, IOException, NoSuchAlgorithmException, CertificateException, KeyManagementException, UnrecoverableKeyException {
    // Trusted CA keystore
    KeyStore tks = KeyStore.getInstance(CA_KEYSTORE_TYPE);
    tks.load(new FileInputStream(CA_KEYSTORE_PATH), CA_KEYSTORE_PASS.toCharArray());

    // Client keystore
    KeyStore cks = KeyStore.getInstance(CLIENT_KEYSTORE_TYPE);
    cks.load(new FileInputStream(CLIENT_KEYSTORE_PATH), CLIENT_KEYSTORE_PASS.toCharArray());

    SSLContext sslcontext = SSLContexts.custom()
            //.loadTrustMaterial(tks, new TrustSelfSignedStrategy()) // use it to customize
            .loadKeyMaterial(cks, CLIENT_KEYSTORE_PASS.toCharArray()) // load client certificate
            .build();
    return sslcontext;
}

}

답변

    KeyStore keyStore = KeyStore.getInstance("pkcs12");
    keyStore.load(new FileInputStream(keyStorePath), keystorePassword.toCharArray());
    KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
    kmf.init(keyStore, keystorePassword.toCharArray());
    SSLContext ctx = SSLContext.getInstance("TLS");
    ctx.init(kmf.getKeyManagers(), null, null);
    SSLSocketFactory sslSocketFactory = ctx.getSocketFactory();

    HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
    connection.setSSLSocketFactory(sslSocketFactory);