(Objective-C) ScMinidriver - Import Private Key to Smart Card

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Demonstrates how to import a private key to the "signature" or "key exchange" location in the Nth key container on a smart card.

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#import <CkoPrivateKey.h>
#import <CkoScMinidriver.h>
#import <NSString.h>

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Chilkat recommends the following free tool for interactively examining the contents of your smart card
// through the ScMinidriver interface:  MGTEK Tool for Minidriver enabled Smart Cards

// Let's first look at our smart card before importing a private key.
// Here's the view of our Gemalto (Thales) IDPrime MD T=0 smart card in the MGTEK tool:



// First let's load a private key into the Chilkat private key object.
// (Chilkat provides the ability to load private keys from many different sources and formats.
// this example loads from a PEM file.)
CkoPrivateKey *privKey = [[CkoPrivateKey alloc] init];
BOOL success = [privKey LoadPemFile: @"qa_data/rsa/rsaPrivKey_pkcs8.pem"];
if (success == NO) {
    NSLog(@"%@",privKey.LastErrorText);
    return;
}

CkoScMinidriver *scmd = [[CkoScMinidriver alloc] init];

// First we need to acquire a context to the smart card in the reader where it is inserted.
// Reader names (smart card readers or USB tokens) can be discovered
// via List Readers or Find Smart Cards
NSString *readerName = @"Alcor Micro USB Smart Card Reader 0";
success = [scmd AcquireContext: readerName];
if (success == NO) {
    NSLog(@"%@",scmd.LastErrorText);
    return;
}

// If successful, the name of the currently inserted smart card is available:
NSLog(@"%@%@",@"Card name: ",scmd.CardName);

// To import a private key, we'll need to be PIN authenticated.
// For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
NSString *pinId = @"user";
int retval = [[scmd PinAuthenticate: pinId pin: @"0000"] intValue];
if (retval != 0) {
    NSLog(@"%@",@"PIN Authentication failed.");
    [scmd DeleteContext];
    return;
}

// Let's import into the "key exchange" position in key container #7.
success = [scmd ImportKey: [NSNumber numberWithInt: 7] keySpec: @"kex" privKey: privKey pinId: @"user"];
if (success == NO) {
    NSLog(@"%@",@"PIN Authentication failed.");
    [scmd DeleteContext];
    return;
}

[scmd DeleteContext];

NSLog(@"%@",@"Success.");

// Here's the MGTEK view of the smart card after importing the private key: