android - 我们是否需要创建任何证书才能在 Android 中调用 https Web 服务

Question

您好，我正在开发 android 应用程序，我在所有 Web 服务中使用 https 协议(protocol)。所以要从 android 应用程序与启用 https 的服务器进行通信，我们是否需要在我的 android 的 raw 文件夹中添加任何证书？

如果是那么它的过程是什么。我检查了很多答案，但人们只是忽略了 https 协议(protocol)，只是接受所有证书或绕过。

提前致谢。

Answer 1

1. 创建BouncyCaSTLe KeyStore，将您的证书放入其中(您可以使用openssl)，稍后将创建的KeyStore放入res/raw文件夹。

在应用中:

1. 将您的 keystore 文件加载到 java KeyStore
2. 为您的 HttpClient 提供您的 KeyStore

例子:

// Load CAs from an InputStream
// (could be from a resource or ByteArrayInputStream or ...)
CertificateFactory cf = CertificateFactory.getInstance("X.509");
// From https://www.washington.edu/itconnect/security/ca/load-der.crt
InputStream caInput = new BufferedInputStream(new FileInputStream("load-der.crt"));
Certificate ca;
try {
    ca = cf.generateCertificate(caInput);
    System.out.println("ca=" + ((X509Certificate) ca).getSubjectDN());
} finally {
    caInput.close();
}

// Create a KeyStore containing our trusted CAs
String keyStoreType = KeyStore.getDefaultType();
KeyStore keyStore = KeyStore.getInstance(keyStoreType);
keyStore.load(null, null);
keyStore.setCertificateEntry("ca", ca);

// Create a TrustManager that trusts the CAs in our KeyStore
String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();
TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);
tmf.init(keyStore);

// Create an SSLContext that uses our TrustManager
SSLContext context = SSLContext.getInstance("TLS");
context.init(null, tmf.getTrustManagers(), null);

// Tell the URLConnection to use a SocketFactory from our SSLContext
URL url = new URL("https://certs.cac.washington.edu/CAtest/");
HttpsURLConnection urlConnection =
    (HttpsURLConnection)url.openConnection();
urlConnection.setSSLSocketFactory(context.getSocketFactory());
InputStream in = urlConnection.getInputStream();
copyInputStreamToOutputStream(in, System.out);

来源: https://developer.android.com/training/articles/security-ssl.html