rcgen で雑に自己署名証明書を生成するやつ

generate_self_signed_certificate.rs

#!/usr/bin/env rust-script

//! ```cargo
//! [dependencies]
//! rcgen = "0.13.1"
//! ```

use std::{env::args, process::exit};
use rcgen::{CertifiedKey, generate_simple_self_signed};

fn main() {
    let mut args: Vec<_> = args().collect();
    if args.len() <= 1 {
        eprintln!("specify at least one domain");
        exit(1);
    }
    args.remove(0);
    eprintln!("generating self-signed certificate for {args:?}\n");

    let CertifiedKey { cert, key_pair } = generate_simple_self_signed(args).expect("failed to generate certificate");
    println!("{}", cert.pem());
    println!("{}", key_pair.serialize_pem());
}