Tag Grpc

November 29, 2021 2 min read

gRPC supports authentication. Adding it to your project is simple. All you have to do is configure it with just a few lines of code. One of the authentication types that gRPC supports is SSL/TLS. From the server-side, the code looks like this:

creds, err := credentials.NewServerTLSFromFile(certFile, keyFile)
if err != nil {
    // handle the error - no ignore it!
}
s := grpc.NewServer(grpc.Creds(creds))

The client has to update the code as shown below.

creds, err := credentials.NewClientTLSFromFile(certFile, "")
if err != nil {
    // handle the error - no ignore it!
}
conn, _ := grpc.Dial("localhost:50051", grpc.WithTransportCredentials(creds))

But, from where take the certificate? One of ways is using the openssl.