Grpc Java：在服务器上设置SSLContext

Question

I want to set-up SSL on my GRPC server. For that I need certificate chain and a pkcs8 private key.

I have done the following:

Generate CA key:

openssl genrsa -des3 -out ca.key 4096

Generate CA certificate:

openssl req -new -x509 -days 365 -key ca.key -out ca.crt

Generate server key:

openssl genrsa -des3 -out server.key 4096

Generate server signing request:

openssl req -new -key server.key -out server.csr

Self-sign server certificate:

openssl x509 -req -days 365 -in server.csr -CA ca.crt -CAkey ca.key -set_serial 01 -out server.crt

Remove passphrase from the server key:

openssl rsa -in server.key -out server.key

Conver to pkcs8

openssl pkcs8 -topk8 -nocrypt -in server.key -out pkcs8_key.pem

---

Now that I have my server.cert and pkcs8_key.pem files, I've created the server as such:

InputStream certChain = MyServer.class.getResourceAsStream("/server.crt");
        InputStream privateKey = MyServer.class.getResourceAsStream("/pkcs8_key.pem");
        SslContext sslContext = GrpcSslContexts.forServer(certChain, privateKey, "password").build();


        Server server = NettyServerBuilder.forPort(8080)
                            .sslContext(sslContext)
                            .addService(new ChatService())
                            .addService(new HelloWorldService())
                            .useTransportSecurity(certChain, privateKey)
                            .build();

The classpath is configured properly.

The error stack I'm getting:

Exception in thread "main" java.lang.IllegalArgumentException: Input stream does not contain valid private key.
    at io.grpc.netty.shaded.io.netty.handler.ssl.SslContextBuilder.keyManager(SslContextBuilder.java:296)
    at io.grpc.netty.shaded.io.netty.handler.ssl.SslContextBuilder.forServer(SslContextBuilder.java:104)
    at io.grpc.netty.shaded.io.grpc.netty.GrpcSslContexts.forServer(GrpcSslContexts.java:162)
    at server.MyServer.main(MyServer.java:20)
Caused by: java.io.IOException: overrun, bytes = 2353
    at javax.crypto.EncryptedPrivateKeyInfo.<init>(EncryptedPrivateKeyInfo.java:92)
    at io.grpc.netty.shaded.io.netty.handler.ssl.SslContext.generateKeySpec(SslContext.java:978)
    at io.grpc.netty.shaded.io.netty.handler.ssl.SslContext.getPrivateKeyFromByteBuffer(SslContext.java:1034)
    at io.grpc.netty.shaded.io.netty.handler.ssl.SslContext.toPrivateKey(SslContext.java:1024)
    at io.grpc.netty.shaded.io.netty.handler.ssl.SslContextBuilder.keyManager(SslContextBuilder.java:294)
    ... 3 more

Answer 1

The exception is being caused by this line:

SslContext sslContext = GrpcSslContexts
    .forServer(certChain, privateKey, "password").build();

Since your pkcs8 key has no password, you should not be passing a password and instead use the two-argument method:

SslContext sslContext = GrpcSslContexts
    .forServer(certChain, privateKey).build();

Note that calling useTransportSecurity() will overwrite your call to sslContext() , so you shouldn't call both. Calling both would break in the current code because forServer() consumes and close the provided InputStream s, so you'd be passing closed streams to useTransportSecurity() .