我基于Java的SSLServerSocket编写了一个服务器,它接受连接并通过自定义二进制协议与Android应用程序通信:
ServerSocket serverSocket = SSLServerSocketFactory.getDefault().createServerSocket(1234);
while (true) {
Socket socket = serverSocket.accept();
...
}
我使用以下参数运行服务器:
-Djavax.net.ssl.keyStore=keystore.jks
-Djavax.net.ssl.keyStorePassword=<PASSWORD>
证书是使用以下教程生成的,该教程构建了一组公钥和私钥:http://judebert.com/progress/archives/425-Using-SSL-in-Java,-Part-2.html:
keytool -genkeypair -keystore keystore.jks -alias keyname
keytool -export -alias keyname -file keyname.crt -keystore keystore.jks
keytool -importcert -file keyname.crt -keystore truststore.jks
同时,我通过使用bouncycastle构建一个truststore,使其与安卓系统兼容:
keytool -importkeystore -srckeystore truststore.jks -srcstoretype JKS -srcstorepass <PASSWORD> -destkeystore truststore.bks -deststoretype BKS -deststorepass <PASSWORD> -provider org.bouncycastle.jce.provider.BouncyCastleProvider -providerpath bcprov-ext-jdk15on-1.58.jar
在此处下载bouncycastle提供程序:https://www.bouncycastle.org/latest_releases.html
然后将生成的truststore.bks移动到原始资源文件夹中。
在Android上,我使用以下代码构建SSLSocketFactory
,它允许我导入生成的bouncycastle证书,从而使我被服务器认证:
KeyStore trustStore = KeyStore.getInstance("BKS");
InputStream trustStoreStream = context.getResources().openRawResource(R.raw.truststore);
trustStore.load(trustStoreStream, "<PASSWORD>".toCharArray());
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(trustStore);
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, trustManagerFactory.getTrustManagers(), null);
Socket socket = sslContext.getSocketFactory().createSocket("ip", 1234);
... use socket
这在 Android 6 版本以下的设备上运行良好。我的问题出现在版本 6 及更高版本中,当尝试使用套接字时会抛出异常:
Shutting down connection Socket[address=/ip,port=1234,localPort=321321] due to exception Handshake failed
javax.net.ssl.SSLHandshakeException: Handshake failed
at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:429)
at com.example.Client.connect(Client.java:97)
at com.example.Client.start(Client.java:60)
at com.example.BackendServiceFactory$2.call(BackendServiceFactory.java:136)
at com.example.BackendServiceFactory$2.call(BackendServiceFactory.java:130)
...
Caused by: javax.net.ssl.SSLProtocolException: SSL handshake terminated: ssl=0xe69ec900: Failure in SSL library, usually a protocol error
error:10000410:SSL routines:OPENSSL_internal:SSLV3_ALERT_HANDSHAKE_FAILURE (external/boringssl/src/ssl/s3_pkt.c:641 0xe2d10880:0x00000001)
error:1000009a:SSL routines:OPENSSL_internal:HANDSHAKE_FAILURE_ON_CLIENT_HELLO (external/boringssl/src/ssl/s3_clnt.c:800 0xe6ea5af3:0x00000000)
at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:357)
... 24 more
我不确定这里发生了什么。处理客户端证书的过程中似乎出现了错误,这可能是密码套件不匹配引起的吗?
我已经准备了一个包括Java服务器、Java客户端和Android客户端的最小示例来帮助诊断此问题: