Rust Requires Chilkat v11.0.0+

RSA Signature with Certificate's Private Key from PFX

See more RSA Examples

Demonstrates how to use a certificate's private key from a PFX file to create an RSA signature. Rust

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

// Create an instance of a certificate store object, load a PFX file,
// locate the certificate we need, and use it for signing.
// (a PFX file may contain more than one certificate.)
let cert_store = chilkat::CertStore::new();

// The 1st argument is the filename, the 2nd arg is the 
// PFX file's password:
if cert_store.load_pfx_file("chilkat.pfx", "test").is_err() {
    println!("{}", cert_store.last_error_text());
    return;
}

// Find the certificate by the subject common name:
let json_cn = chilkat::JsonObject::new();
let _ = json_cn.update_string("CN", "cert common name");

let cert = chilkat::Cert::new();
if cert_store.find_cert(&json_cn, &cert).is_err() {
    println!("{}", cert_store.last_error_text());
    return;
}

let priv_key = chilkat::PrivateKey::new();
if cert.get_private_key(&priv_key).is_err() {
    println!("{}", cert.last_error_text());
    return;
}

let rsa = chilkat::Rsa::new();

if rsa.use_private_key(&priv_key).is_err() {
    println!("{}", rsa.last_error_text());
    return;
}

// Encode the signature as a hex string
rsa.set_encoding_mode("hex");

let str_data = "This is the string to be signed.".to_string();

// Sign the string using the sha-1 hash algorithm.
// Other valid choices are "sha-256", "md2" and "md5".
let hex_sig = rsa.sign_string_enc(&str_data, "sha-1").unwrap_or_default();

println!("{}", hex_sig);

println!("Success!");