How to perform 'Async RSA Keygen' in Rust.
// Task: Async RSA Keygen
// Language: Rust
fn async_rsa_keygen() {
// Implementation for Async RSA Keygen
let result = ...; // Initialize variable
// TODO: Implement core logic here
// Step 1: Prepare data
// Step 2: Process Async RSA Keygen
println!("Done");
}