Rust script to generate self signed certificates

generate_cert.rs

#!/usr/bin/env -S cargo +nightly -Zscript
---cargo
[package]
edition = "2024"

[dependencies]
rcgen = "0.13.2"
---

use rcgen::{
    CertificateParams,
    KeyPair,
};
use std::error::Error;

fn main() -> Result<(), Box<dyn Error>>{
    let key = KeyPair::generate()?;
    let params = CertificateParams::default();

    let cert = params.self_signed(&key)?;

    println!("{}", cert.pem());
    println!("{}", key.serialize_pem());

    Ok(())
}