关于java:Android 6及以上Android SSLSocket握手失败

Android SSLSocket handshake failure in Android 6 and above

我已经编写了一个基于 Java SSLServerSocket 的服务器，它接受连接并通过自定义二进制协议与 android 应用程序通信：

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ServerSocket serverSocket = SSLServerSocketFactory.getDefault().createServerSocket(1234);
while (true) {
Socket socket = serverSocket.accept();
…
}

我使用以下参数运行服务器：

1 2	–Djavax.net.ssl.keyStore=keystore.jks –Djavax.net.ssl.keyStorePassword=<PASSWORD>

证书是使用以下构建公钥和私钥集的教程生成的：http://judebert.com/progress/archives/425-Using-SSL-in-Java,-Part-2.html：

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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

另外，我通过使用 bouncycastle 构建信任库来使其与 android 兼容：

1	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

并将生成的 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一个 SSLSocketFactory，它允许我导入生成的 bouncycastle 证书，该证书可以针对服务器对我进行身份验证：

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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

这适用于低于 6 的 Android 版本。我的问题是在版本 6 及更高版本上尝试使用套接字时出现异常：

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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。在处理客户端证书的过程中似乎有一个失误，这可能是密码套件不匹配吗？

我已经用 Java 服务器、Java 客户端和 Android 客户端组合了一个最小示例来帮助诊断此问题：

https://github.com/johncarl81/androidCA

Android SSLSocket handshake failure in Android 6 and above

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