(Unicode C++) PKCS11 Import an Existing AES Key onto the HSM

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Demonstrates how to import an existing AES symmetric encrytion key onto the smartcard/token. The imported AES key is a session object, and only exists for the duration of the PKCS11 session. (AES keys are typically used for wrapping/unwrapping RSA and EC keys.)

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

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#include <CkPkcs11W.h>
#include <CkStringBuilderW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    // 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.

    CkPkcs11W 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.put_SharedLibPath(L"C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll");

    // Establish a logged-on session.
    const wchar_t *pin = L"0000";
    int userType = 1;
    bool success = pkcs11.QuickSession(userType,pin);
    if (success == false) {
        wprintf(L"%s\n",pkcs11.lastErrorText());
        return;
    }

    // Generate a 256-bit AES key.
    // (32 bytes is 256 bits)
    // Append 32 bytes of random data in the base64 encoding.
    CkStringBuilderW sbAesKey;
    sbAesKey.AppendRandom(32,L"base64");

    CkJsonObjectW attrs;
    // Specify the type of object, and the type of key.
    attrs.UpdateString(L"class",L"CKO_SECRET_KEY");
    attrs.UpdateString(L"key_type",L"CKK_AES");
    // Add an optional label if desired.
    attrs.UpdateString(L"label",L"My AES wrapping/unwrapping key");
    // Allow the key to be use for wrapping and unwrapping operations.
    attrs.UpdateBool(L"wrap",true);
    attrs.UpdateBool(L"unwrap",true);

    // Provide the AES key material.
    attrs.UpdateString(L"value",sbAesKey.getAsString());

    // Create the object (i.e. create the AES key with the given key material.)
    // Returns the PKCS11 object handle of the created AES session key.
    unsigned long objHandle = pkcs11.CreatePkcs11Object(attrs);
    if (objHandle == 0) {
        wprintf(L"%s\n",pkcs11.lastErrorText());
        wprintf(L"Failed.\n");
    }
    else {
        wprintf(L"PKCS11 object handle = %u\n",objHandle);
        wprintf(L"Successfully created a 256-bit AES session key.\n");
    }

    // Typically, you would do other things in the PKCS11 session that use the handle of AES key we just created.
    // ...
    // ...

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