(C#) PKCS11 Import an Existing RSA Public Key onto the HSM

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Demonstrates how to import an existing RSA Public Key onto a smart card 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.
string pin = "0000";
int userType = 1;
bool success = pkcs11.QuickSession(userType,pin);
if (success == false) {
    Debug.WriteLine(pkcs11.LastErrorText);
    return;
}

// Generate a new 2048-bit RSA key.
Chilkat.Rsa rsa = new Chilkat.Rsa();
success = rsa.GenerateKey(2048);
if (success == false) {
    Debug.WriteLine(rsa.LastErrorText);
    return;
}

// Get the public key information as XML, so we can access the modulus and exponent.
Chilkat.Xml xml = new Chilkat.Xml();
xml.LoadXml(rsa.ExportPublicKey());

Chilkat.JsonObject attrs = new Chilkat.JsonObject();
// Specify the type of object, and the type of key.
attrs.UpdateString("class","CKO_PUBLIC_KEY");
attrs.UpdateString("key_type","CKK_RSA");
// Add an optional label if desired.
attrs.UpdateString("label","RSA Public Key 1");
// Allow the key to be use for verify, wrapping, and encryption operations.
attrs.UpdateBool("verify",true);
attrs.UpdateBool("wrap",true);
attrs.UpdateBool("encrypt",true);

// Make this a session-only public key.
// To store the public key on the token so that it persists after the PKCS11 session, set token = true.
attrs.UpdateBool("token",false);

// Provide the RSA public key material
attrs.UpdateString("modulus",xml.GetChildContent("Modulus"));
attrs.UpdateString("public_exponent",xml.GetChildContent("Exponent"));

// Create the RSA public key.
// Returns the PKCS11 object handle of the created key.
uint objHandle = pkcs11.CreatePkcs11Object(attrs);
if (objHandle == 0) {
    Debug.WriteLine(pkcs11.LastErrorText);
    Debug.WriteLine("Failed.");
}
else {
    Debug.WriteLine("PKCS11 object handle = " + Convert.ToString(objHandle));
    Debug.WriteLine("Successfully imported an RSA key..");
}

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