使用客户端身份验证在Android上运行时配置SSL / TLS http客户端

以下测试设置在Android模拟器上运行正常 . 它使用相互身份验证打开与外部服务器的基于SSL / TLS的连接：

ca.crt（验证服务器证书）：
-----开始证书-----
BASE64编码的东西
-----结束证书-----

client.p12（包括由服务器信任的私有CA签名的客户端证书）：PKCS＃12格式

运行成功的Java / Android代码：

trustStore = KeyStore.getInstance("bks");
trustStore.load(null, null);
caCertificate = getX509Certificate("/some/path/ca.crt");
trustStore.setCertificateEntry("ca-cert", caCertificate);

keyStore = KeyStore.getInstance("pkcs12");
keyStore.load(null, null);
InputStream is = new FileInputStream("/some/path/client.p12");
keyStore.load(is, "passwd".toCharArray());

TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance("X509");
trustManagerFactory.init(trustStore);
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance("X509");
keyManagerFactory.init(keyStore, null);

context = SSLContext.getInstance("TLS");
context.init(keyManagerFactory.getKeyManagers(), trustManagerFactory.getTrustManagers(), new SecureRandom());

URL url = new URL("https://www.backend.com");
HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
connection.setSSLSocketFactory(context.getSocketFactory());
connection.setDoInput(true);
connection.setDoInput(true);
BufferedReader urlReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String inputLine;
while ( (inputLine=urlReader.readLine()) != null ){
    System.out.println(inputLine);
}

但是，client.p12在运行时不可用 . http客户端通过单独的专用通道接收以下配置：

• PEM编码X509客户端证书（client.crt）

• DER格式化私钥客户端（client.der）

因此，我将以客户端.p12作为输入更改了密钥库初始化，如下所示：

keyStore = KeyStore.getInstance("bks");
keyStore.load(null, null);
clientCertificate = getX509Certificate("/some/path/client.crt");
byte[] privateKey =  getBytesFromFile("/some/path/client.der");
Certificate[] chain = new Certificate[2];
chain[1] = caCertificate;
chain[0] = clientCertificate;        
keyStore.setCertificateEntry("client-cert", clientCertificate);
keyStore.setKeyEntry("client-cert-key", privateKey, chain);

运行时执行时抛出异常

context = SSLContext.getInstance("TLS");
---->  context.init(keyManagerFactory.getKeyManagers(), trustManagerFactory.getTrustManagers(), new SecureRandom());

java.lang.RuntimeException: forget something!
at org.bouncycastle.jce.provider.JDKKeyStore$StoreEntry.getObject(JDKKeyStore.java:314)
at org.bouncycastle.jce.provider.JDKKeyStore.engineGetKey(JDKKeyStore.java:604)
at java.security.KeyStoreSpi.engineGetEntry(KeyStoreSpi.java:376)
at java.security.KeyStore.getEntry(KeyStore.java:734)
at org.apache.harmony.xnet.provider.jsse.KeyManagerImpl.<init>(KeyManagerImpl.java:72)

总结：一切都在使用pcks12证书/私钥对，但没有使用上述格式的两个 .

根据之前提到的client.der / client.pem，有什么建议是出错或建议实现客户端身份验证吗？

附：运行keytool运行时不是一个选项，因为我没有在运行时使用它，我不想这样做 .