cert-gen

This is a Rust function that generates a new SSL certificate and private key signed by a specified Certificate Authority (CA). The function takes two arguments:

• ca_cert: A Certificate object representing the CA to sign the new certificate with.
• dn_name: A String representing the domain name to generate the certificate for.

The function creates a new DistinguishedName object with the specified domain name, and a new CertificateParams object with the following properties:

• distinguished_name: The DistinguishedName object with the specified domain name.
• not_before: The current date and time.
• not_after: The current date and time plus 20 years.
• subject_alt_names: A Vec<SanType> containing the domain name, "localhost", and the IP addresses 127.0.0.1 and ::1.

The function then creates a new Certificate object using the CertificateParams object, and signs it with the specified CA using the serialize_pem_with_signer method. Finally, the function saves the signed certificate and private key files to disk in the certs directory within the directory you run the command from, with filenames based on the specified domain name.

Usage

To use this function in your Rust code, you'll need to import the necessary crates and dependencies, and then call the function with the required arguments. Here's an example:

use rcgen::Certificate;
use signed_cert_with_ca;

// Assume `ca_cert` is a `Certificate` object representing the CA to sign the new certificate with.
let dn_name = "example.com".to_string();

signed_cert_with_ca(ca_cert, dn_name);

This will generate a new SSL certificate and private key for the domain example.com, signed by the specified CA.

Dependencies

This function depends on the following Rust crates:

rcgen: Used to generate SSL certificates and private keys. std::fs: Used to save the generated files to disk.

License

This code is licensed under the MIT License. See the LICENSE file for details.

Appreciation

This project would not been finished without the awesome help of brsnik and est31 so many thanks to them.