(C#) PKCS11 Export Public Key from HSM

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Demonstrates how to export a public key from a smartcard or token.

Note: This example requires Chilkat v9.5.0.96 or later.

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// 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.

Chilkat.Pkcs11 pkcs11 = new Chilkat.Pkcs11();

// Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
// (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
pkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll";

// Establish a logged-on session. (We can typically skip the login by passing an empty PIN if only working with public keys)
// Use your actual PIN here, or an empty string to skip login.
string pin = "0000";
int userType = 1;
bool success = pkcs11.QuickSession(userType,pin);
if (success == false) {
    Debug.WriteLine(pkcs11.LastErrorText);
    return;
}

// Get the handle of the public key we wish to export.
// You can find public keys in many different ways.
// This example will search for a public key by label.

// Provide a template to find a PKCS11 object.
Chilkat.JsonObject jsonTemplate = new Chilkat.JsonObject();

// Find the public key with the label "Belgium eHealth".
jsonTemplate.UpdateString("class","public_key");
jsonTemplate.UpdateString("label","Belgium eHealth");

uint pubKeyHandle = pkcs11.FindObject(jsonTemplate);
if (pubKeyHandle == 0) {
    Debug.WriteLine(pkcs11.LastErrorText);
    return;
}

// Export to a Chilkat public key object.
Chilkat.PublicKey pubKey = new Chilkat.PublicKey();
success = pkcs11.ExportPublicKey(pubKeyHandle,pubKey);
if (success == false) {
    Debug.WriteLine(pkcs11.LastErrorText);
    return;
}

// Get the public key as PKCS8 PEM.
Debug.WriteLine(pubKey.GetPem(false));

pkcs11.Logout();
pkcs11.CloseSession();