(C#) PKCS11 Import a Private Key onto the HSM

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Demonstrates how to import an existing RSA private key onto the smartcard/token. The imported key is a token object, meaning it stays on the HSM and exists beyond the end of the PKCS11 session.

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.
string pin = "0000";
int userType = 1;
bool success = pkcs11.QuickSession(userType,pin);
if (success == false) {
    Debug.WriteLine(pkcs11.LastErrorText);
    return;
}

// Let's import a certificate's private key onto the HSM.
// First, we'll load the certificate from a .pfx (also known as .p12), which is a file format
// that also includes the certificate's private key.
Chilkat.Cert cert = new Chilkat.Cert();
success = cert.LoadPfxFile("qa_data/pfx/ehealth.fgov.be_testing.p12","p12_password");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Let's get the certificate's private key.
Chilkat.PrivateKey privKey = cert.ExportPrivateKey();
if (cert.LastMethodSuccess == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Build a PKCS11 template to provide additional information about the key to be imported.
Chilkat.JsonObject jsonTemplate = new Chilkat.JsonObject();

// Indicate that the key is to be stored on the token.  It is NOT a session object.
jsonTemplate.UpdateBool("token",true);

// Indicate that the key can be used for signing.
jsonTemplate.UpdateBool("sign",true);

// Provide an arbitrary ID and label (anything you want).
// The information in the ID and/or label provides one means for finding the key in future PKCS11 sessions.
jsonTemplate.UpdateString("id_hex","010203040A0B0C0D0E0F");
jsonTemplate.UpdateString("label","ehealth private key");

// Import the key.  The private key handle is returned on success.  Otherwise 0 is returned.
// If our only task for now is to simply import the key, we can ignore the returned handle, 
// other than to check for success/failure.  Otherwise, the handle can be used in other PKCS11 operations.
// This example just creates the key and does not use the returned handle.
uint keyHandle = pkcs11.ImportPrivateKey(privKey,jsonTemplate);
if (keyHandle == 0) {
    Debug.WriteLine(pkcs11.LastErrorText);
}
else {
    Debug.WriteLine("key handle = " + Convert.ToString(keyHandle));
    Debug.WriteLine("Successfully imported a private key onto the HSM.");
}

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