Rust

ScMinidriver - Load Certificate from Smart Card or USB Token by Index

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Demonstrates how to load a certificate located on a smart card or USB token by key container index. Rust

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
let scmd = chilkat::ScMinidriver::new();

// Reader names (smart card readers or USB tokens) can be discovered
// via List Readers or Find Smart Cards
let reader_name = "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0".to_string();
if scmd.acquire_context(&reader_name).is_err() {
    println!("{}", scmd.last_error_text());
    return;
}

// If successful, the name of the currently inserted smart card is available:
println!("Card name: {}", scmd.card_name());

// If desired, perform regular PIN authentication with the smartcard.
// For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
let retval = scmd.pin_authenticate("user", "000000");
if retval != 0 {
    println!("PIN Authentication failed.");
}

let cert = chilkat::Cert::new();
// We can pass a specific key container index, or -1 to locate the 1st non-empty container containing a certificate and private key.
let key_container_index = -1;
// keySpec can be "kex" or "sig" to indicate the key-exchange or signature position within the container.
// keySpec can also be "any" to accept either position, with preference given to the "sig" position if both are occupied.
let key_spec = "any".to_string();
if scmd.get_cert(key_container_index, &key_spec, &cert).is_err() {
    println!("Failed to load the certificate.");
} else {
    println!("Successfully loaded the cert object from the smart card / USB token.");

    // Note: When successful, the cert object is internally linked to the ScMinidriver object's authenticated session.
    // The cert object can now be used to sign or do other cryptographic operations that occur on the smart card / USB token.
    // If your application calls PinDeauthenticate or DeleteContext, the cert will no longer be able to sign on the smart card
    // because the smart card ScMinidriver session will no longer be authenticated or deleted.
}

// ...
// ...
// ...

// When finished with operations that required authentication, you may if you wish, deauthenticate the session.
if scmd.pin_deauthenticate("user").is_err() {
    println!("{}", scmd.last_error_text());
}

// Delete the context when finished with the card.
if scmd.delete_context().is_err() {
    println!("{}", scmd.last_error_text());
}