java - Android HttpsUrlConnection 验证 SSL

Question

我有一个关于在 Android 中使用 HttpsUrlConnection class 验证 SSL 的问题。我需要使用安全连接连接到网络服务器并验证 ssl。我必须检查它是否已过期，以及证书名称是否与自定义名称匹配。可选 - 如果也可以验证 SSL 证书缩略图(到预定义的缩略图)，那就太好了。这是我现在用来连接服务器的代码:

public void UseHttpsConnection(String url, String charset, String query) {

    try {
        final TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
            @Override
            public void checkClientTrusted( final X509Certificate[] chain, final String authType ) {
            }
            @Override
            public void checkServerTrusted( final X509Certificate[] chain, final String authType ) {
            }
            @Override
            public X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        } };

        // Install the all-trusting trust manager
        final SSLContext sslContext = SSLContext.getInstance( "TLS" );
        sslContext.init( null, trustAllCerts, new java.security.SecureRandom() );
        // Create an ssl socket factory with our all-trusting manager
        final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();



        System.setProperty("http.keepAlive", "false");
        HttpsURLConnection connection = (HttpsURLConnection) new URL(url)
                .openConnection();
        connection.setSSLSocketFactory( sslSocketFactory );
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Charset", charset);
        connection.setRequestProperty("Content-Type",
                "application/x-www-form-urlencoded;charset=" + charset);
        OutputStream output = null;
        try {
            output = connection.getOutputStream();
            output.write(query.getBytes(charset));
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (output != null)
                try {
                    output.close();
                } catch (IOException logOrIgnore) {
                    logOrIgnore.printStackTrace();
                }
        }

        int status = ((HttpsURLConnection) connection).getResponseCode();
        Log.i("", "Status : " + status);

        for (Entry<String, List<String>> header : connection
                .getHeaderFields().entrySet()) {
            Log.i("Headers",
                    "Headers : " + header.getKey() + "="
                            + header.getValue());
        }

        InputStream response = new BufferedInputStream(
                connection.getInputStream());

        int bytesRead = -1;
        byte[] buffer = new byte[30 * 1024];
        while ((bytesRead = response.read(buffer)) > 0) {
            byte[] buffer2 = new byte[bytesRead];
            System.arraycopy(buffer, 0, buffer2, 0, bytesRead);
            handleDataFromSync(buffer2);
        }

        connection.disconnect();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

我在这里需要一点帮助，因为我对 SSL 验证和使用它的基本知识不熟悉。感谢您提供任何帮助!

Answer 1

如果你想验证证书，你要做的第一件事就是扔掉那个完全信任任何东西的不安全的 TrustManager。而是编写一个检查以您要求的方式收到的证书。