Decrypt S/MIME using a Certificate with Private Key Access

See more MIME Examples

Loads a CMS/PKCS #7 encrypted S/MIME message and decrypts it back to the original MIME content.

DecryptUsingCert takes a single certificate that already has access to its associated private key, for example a certificate loaded from a PFX.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

let mime = chilkat::Mime::new();
if mime.load_mime_file("qa_data/encrypted.eml").is_err() {
    println!("{}", mime.last_error_text());
    return;
}

// Decrypt using a certificate that already provides access to its private key (for example loaded
// from a PFX).  The only argument is the certificate.
let pfx_password = "myPfxPassword".to_string();
let cert = chilkat::Cert::new();
if cert.load_pfx_file("qa_data/recipient.pfx", &pfx_password).is_err() {
    println!("{}", cert.last_error_text());
    return;
}

if mime.decrypt_using_cert(&cert).is_err() {
    println!("{}", mime.last_error_text());
    return;
}

let Ok(body) = mime.get_body_decoded() else {
    println!("{}", mime.last_error_text());
    return;
};

println!("{}", body);