|
|
(Objective-C) ScMinidriver - Get Public Keys from Smart Card Key Container
Demonstrates how to query a key container on a smart card (or USB token) to get the public part of the private keys that are present. A key container can hold two separate private keys -- one in the "signature" position, and the other in the "key exchange" position.
#import <CkoScMinidriver.h>
#import <NSString.h>
#import <CkoPublicKey.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..
// Here's the view of our Gemalto (Thales) IDPrime MD T=0 smart card in the MGTEK tool:
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";
BOOL 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);
// We likely shouldn't need to authenticate with the smart card (use a PIN) to simply get a public key,
// so we can skip the PIN authenticatin step..
// Let's get the key(s) present in Container #7.
// In our case (shown in the image above), there is a private key in the "key exchange" position, but no key in the "signature" position.
CkoPublicKey *pubkey_sig = [[CkoPublicKey alloc] init];
CkoPublicKey *pubkey_kex = [[CkoPublicKey alloc] init];
success = [scmd GetContainerKeys: [NSNumber numberWithInt: 7] sigKey: pubkey_sig kexKey: pubkey_kex];
if (success == NO) {
NSLog(@"%@",scmd.LastErrorText);
return;
}
if (pubkey_sig.Empty == YES) {
NSLog(@"%@",@"No signature key is present.");
}
else {
NSLog(@"%@",@"Signature key:");
NSLog(@"%@",[pubkey_sig GetPem: YES]);
}
if (pubkey_kex.Empty == YES) {
NSLog(@"%@",@"No Key Exchange key is present.");
}
else {
NSLog(@"%@",@"Key Exchange key:");
NSLog(@"%@",[pubkey_kex GetPem: YES]);
}
[scmd DeleteContext];
NSLog(@"%@",@"Success.");
// Here's the output of the above sample code:
// Card name: IDPrime MD T=0
// No signature key is present.
// Key Exchange key:
// -----BEGIN RSA PUBLIC KEY-----
// MIIBCgKCAQEAsXeRhM55P13FbpNcXAMR3olbw2Wa6keZIHu5YTZYUBTlYWId+pNi
// wUz3zFIEo+0IfYR0H27ybIycQO+1IIzJofUFNMAL3tZps2OKPlsjuCPls6kXpXhv
// /gvhux8LrCtp4PcKWqJ6QVOZKChc7WAx40qFWzHi57ueqRTv3x0kESqGg/VjsqyT
// Evb55psJO2RsfhLT7+YVh3hImRM3RDaJdkTkPuOxeFyT6N7VXD09329sLuS3QkUb
// E9zEKDnz9X3d8dEQdJhSI9ba5fxl8R7fu8pB67ElfzFml96X1jLFtzy1pzOT5Fc4
// ROcaqlYckVzdBq9sxezm6MYmDBjNAcibRwIDAQAB
// -----END RSA PUBLIC KEY-----
|
