Rust Requires Chilkat v11.0.0+

Generate CSR with Uncommon Fields

See more CSR Examples

Demonstrates how to generate a new RSA key and a Certificate Signing Request (CSR) for this:

csr.common.name=Admin forInformation-MainShop
csr.serial.number=1-XYZ|2-2.0|3-999695
csr.organization.identifier=990099994100099
csr.organization.unit.name=9999910000
csr.organization.name=9999910000
csr.country.name=SA
csr.invoice.type=1100
csr.location.address=King Fahed Road
csr.industry.business.category=MainOffice

Rust

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// First generate an RSA private key.
let rsa = chilkat::Rsa::new();

// Generate a random 2048-bit RSA key.
let priv_key = chilkat::PrivateKey::new();
if rsa.gen_key(2048, &priv_key).is_err() {
    println!("{}", rsa.last_error_text());
    return;
}

// Create the CSR object and set properties.
let csr = chilkat::Csr::new();

csr.set_common_name("Admin forInformation-MainShop");

// Country Name (2 letter code)
csr.set_country("SA");

// Organization Name (eg, company)
csr.set_company("9999910000");

// Organizational Unit Name (eg, secion/division)
csr.set_company_division("9999910000");

// See https://www.alvestrand.no/objectid/2.5.4.html for OIDs for the following fields:

// csr.serial.number=1-XYZ|2-2.0|3-999695
// 2.5.4.5 - id-at-serialNumber 
let _ = csr.set_subject_field("2.5.4.5", "1-XYZ|2-2.0|3-999695", "UTF8String");

// csr.organization.identifier=990099994100099
// 2.5.4.45 - id-at-uniqueIdentifier   Don't know if this is correct.
let _ = csr.set_subject_field("2.5.4.45", "1100", "UTF8String");

// csr.invoice.type=1100
// Don't know what this OID would be...
let _ = csr.set_subject_field("2.5.4.99", "1100", "UTF8String");

// csr.location.address=King Fahed Road
// 2.5.4.9 - id-at-streetAddress 
let _ = csr.set_subject_field("2.5.4.9", "King Fahed Road", "UTF8String");

// csr.industry.business.category=MainOffice
// 2.5.4.15 - id-at-businessCategory 
let _ = csr.set_subject_field("2.5.4.15", "MainOffice", "UTF8String");

// Create the CSR using the private key.
let Ok(pem_str) = csr.gen_csr_pem(&priv_key) else {
    println!("{}", csr.last_error_text());
    return;
};

// Save the private key and CSR to a files.
let _ = priv_key.save_pkcs8_encrypted_pem_file("password", "qa_output/privKey1.pem");

let fac = chilkat::FileAccess::new();
let _ = fac.write_entire_text_file("qa_output/csr1.pem", &pem_str, "utf-8", false);

// Show the CSR.
println!("{}", pem_str);

// Sample output:
// The CSR PEM can be checked here:
// https://www.networking4all.com/en/support/tools/csr+check/
// Copy-and-paste the PEM into the online CSR Decoding / CSR Verification form

// 	-----BEGIN CERTIFICATE REQUEST-----
// 	MIIC6jCCAdICAQAwgaQxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
// ...
// ...
// 	hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
// 	-----END CERTIFICATE REQUEST-----