Rust

PKCS11 Find Specific Certificate on Smart Card or USB Token

See more PKCS11 Examples

This example code shows how to find a particular certificate on a smart card or USB token.

Note: This example requires Chilkat v9.5.0.88 or later.

Rust

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

// Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

let pkcs11 = chilkat::Pkcs11::new();

// Set your shared lib path -- either a full path to the DLL, .so, or .dylib,
// or just the filename if the driver is in a location that can be automatically found. (Such as in C:\Windows\System32)
pkcs11.set_shared_lib_path("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll");

if pkcs11.initialize().is_err() {
    println!("{}", pkcs11.last_error_text());
    return;
}

// Pass -1 for the slotID to open a session on the first non-empty slot.
let slot_id = -1;

// Open a session.
let read_write = true;
if pkcs11.open_session(slot_id, read_write).is_err() {
    println!("{}", pkcs11.last_error_text());
    return;
}

// Make it an authenticated session by calling Login.
// 
// If we don't authenticate, then we won't be able to see the private keys, and thus
// we won't know which certificates have an associated private key stored on the smart card.

// The smart card PIN is passed to the Login method.
// userType 1 indicates a "Normal User".
let user_type = 1;
let pin = "0000".to_string();
if pkcs11.login(user_type, &pin).is_err() {
    println!("{}", pkcs11.last_error_text());
    let _ = pkcs11.close_session().is_ok();
    return;
}

// --------------------------------------------------------------------------
// The FindCert method can find a particular certificate in a number of different ways.
// I'll demonstrate some common ways..

// 1) In many cases you'll be working with a smart card that contains one certificate that is to be used for 
// signing, and it is the certificate that is associated with the private key also stored on the smart card (or USB token).
// There may be other certificates on the card, but these are the issuer certificates in the chain of authentication.
// You're just interested in getting the certificate with the private key.
// You can do it like this:
let cert = chilkat::Cert::new();
// Pass the keyword "privateKey" in the 1st argument, and an empty string in the 2nd arg.
// This returns the 1st certificate that has a private key.
if pkcs11.find_cert("privateKey", "", &cert).is_ok() {
    println!("Cert with private key: {}", cert.subject_cn());
} else {
    println!("No certificates having a private key were found.");
}

// 2) Find a certificate by the Subject Common Name
if pkcs11.find_cert("subjectCN", "Chil application account (8c9be8e0-5544-4cd0-9062-290fbff353a7)", &cert).is_ok() {
    println!("Found: {}", cert.subject_cn());
} else {
    println!("Not found: {}", cert.subject_cn());
}

// 3) Find a certificate by hex serial number
if pkcs11.find_cert("serial", "5087bf1feda006af54a02f23a851104948acc26f", &cert).is_ok() {
    println!("Found: {}", cert.serial_number());
} else {
    println!("Not found: {}", cert.serial_number());
}

// 4) Find a certificate by hex serial number and Issuer Common Name
if pkcs11.find_cert("serial:issuerCN", "5087bf1feda006af54a02f23a851104948acc26f:Ibanity Production Third Party Application CA", &cert).is_ok() {
    println!("Found: {}", cert.subject_cn());
} else {
    println!("Not found: {}", cert.subject_cn());
}

// --------------------------------------------------------------------------

// Revert to an unauthenticated session by calling Logout.
if pkcs11.logout().is_err() {
    println!("{}", pkcs11.last_error_text());
    let _ = pkcs11.close_session().is_ok();
    return;
}

// When finished, close the session.
// It is important to close the session (memory leaks will occur if the session is not properly closed).
if pkcs11.close_session().is_err() {
    println!("{}", pkcs11.last_error_text());
    return;
}

println!("Success.");