Generating key and certificate for QSslSocket

[dawwin]

I am writing simple network communicator which uses SSL, and I want to be sure how to create certificate and private key correctly. I use following command to create keys:

openssl req -x509 -newkey rsa:2048 -keyout server.key -days 365 -out server.crt -nodes

openssl req -x509 -newkey rsa:2048 -keyout server.key -days 365 -out server.crt -nodes

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And on the server I use
server.crt as argument for addCaCertificate() and setLocalCertificate()
server.key as argument for setPrivateKey()
On the client I use
server.crt as argument for addCaCertificate()
server.crt is public and I share this for users
I want to know if this, what I described is correct and secure