通过HTTPS / SSL的Java客户端证书

  • Z时代
  • 2024-01-10
  • 分类：问答

我正在使用Java 6，并尝试HttpsURLConnection使用客户端证书针对远程服务器创建一个。

服务器正在使用自签名的根证书，并且要求提供受密码保护的客户端证书。我已将服务器根证书和客户端证书添加到在/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/lib/security/cacerts（OSX 10.5）中找到的默认Java密钥库中。密钥库文件的名称似乎表明不应将客户端证书放入其中？

无论如何，将根证书添加到此存储解决了臭名昭著的问题 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed' problem.

但是，我现在停留在如何使用客户端证书上。我尝试了两种方法，但都无济于事。

首先，最好尝试：

SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
URL url = new URL("https://somehost.dk:3049");
HttpsURLConnection conn = (HttpsURLConnection)url.openConnection();
conn.setSSLSocketFactory(sslsocketfactory);
InputStream inputstream = conn.getInputStream();
// The last line fails, and gives:
// javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
我尝试跳过HttpsURLConnection类（因为我想与服务器进行HTTP通信，因此不理想），而是这样做：
SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
SSLSocket sslsocket = (SSLSocket) sslsocketfactory.createSocket("somehost.dk", 3049);
InputStream inputstream = sslsocket.getInputStream();
// do anything with the inputstream results in:
// java.net.SocketTimeoutException: Read timed out

我什至不确定客户端证书是否是这里的问题。

回答：

对我来说，这是使用Apache HttpComponents〜HttpClient 4.x的方法：

    KeyStore keyStore  = KeyStore.getInstance("PKCS12");
    FileInputStream instream = new FileInputStream(new File("client-p12-keystore.p12"));
    try {
        keyStore.load(instream, "helloworld".toCharArray());
    } finally {
        instream.close();
    }
    // Trust own CA and all self-signed certs
    SSLContext sslcontext = SSLContexts.custom()
        .loadKeyMaterial(keyStore, "helloworld".toCharArray())
        //.loadTrustMaterial(trustStore, new TrustSelfSignedStrategy()) //custom trust store
        .build();
    // Allow TLSv1 protocol only
    SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
        sslcontext,
        new String[] { "TLSv1" },
        null,
        SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); //TODO
    CloseableHttpClient httpclient = HttpClients.custom()
        .setHostnameVerifier(SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER) //TODO
        .setSSLSocketFactory(sslsf)
        .build();
    try {
        HttpGet httpget = new HttpGet("https://localhost:8443/secure/index");
        System.out.println("executing request" + httpget.getRequestLine());
        CloseableHttpResponse response = httpclient.execute(httpget);
        try {
            HttpEntity entity = response.getEntity();
            System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());
            if (entity != null) {
                System.out.println("Response content length: " + entity.getContentLength());
            }
            EntityUtils.consume(entity);
        } finally {
            response.close();
        }
    } finally {
        httpclient.close();
    }

P12文件包含使用BouncyCastle创建的客户端证书和客户端私钥：

public static byte[] convertPEMToPKCS12(final String keyFile, final String cerFile,
    final String password)
    throws IOException, CertificateException, KeyStoreException, NoSuchAlgorithmException,
    NoSuchProviderException
{
    // Get the private key
    FileReader reader = new FileReader(keyFile);
    PEMParser pem = new PEMParser(reader);
    PEMKeyPair pemKeyPair = ((PEMKeyPair)pem.readObject());
    JcaPEMKeyConverter jcaPEMKeyConverter = new JcaPEMKeyConverter().setProvider("BC");
    KeyPair keyPair = jcaPEMKeyConverter.getKeyPair(pemKeyPair);
    PrivateKey key = keyPair.getPrivate();
    pem.close();
    reader.close();
    // Get the certificate
    reader = new FileReader(cerFile);
    pem = new PEMParser(reader);
    X509CertificateHolder certHolder = (X509CertificateHolder) pem.readObject();
    java.security.cert.Certificate x509Certificate =
        new JcaX509CertificateConverter().setProvider("BC")
            .getCertificate(certHolder);
    pem.close();
    reader.close();
    // Put them into a PKCS12 keystore and write it to a byte[]
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    KeyStore ks = KeyStore.getInstance("PKCS12", "BC");
    ks.load(null);
    ks.setKeyEntry("key-alias", (Key) key, password.toCharArray(),
        new java.security.cert.Certificate[]{x509Certificate});
    ks.store(bos, password.toCharArray());
    bos.close();
    return bos.toByteArray();
}

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