package main import ( "crypto/rand" "crypto/tls" "log" "net/http" ) func main() { // Create a new TLS configuration with a random source config := &tls.Config{ Rand: rand.Reader, } // Create a new HTTPS server using the TLS configuration server := &http.Server{ Addr: ":443", TLSConfig: config, } // Start the HTTPS server log.Fatal(server.ListenAndServeTLS("server.crt", "server.key")) }In this example, we create a TLS configuration with the 'Rand' field set to 'rand.Reader', which provides a cryptographically secure source of randomness. We then use this configuration to create an HTTPS server and start it listening on port 443. Package library: 'crypto/rand'