(Objective-C) Apple Keychain - List Certs on Smartcards and USB Tokens

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Iterates over the certificatse on connected smartcards and USB tokens via the Apple Keychain.

Note: This example requires Chilkat v10.0.0 or greater.

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#import <CkoCertStore.h>
#import <CkoCert.h>

CkoCertStore *certStore = [[CkoCertStore alloc] init];

// On MacOS and iOS, the OpenSmartcard method opens the Keychain.
// The argument passed to OpenSmartcard is ignored.
BOOL success = [certStore OpenSmartcard: @""];
if (success == NO) {
    NSLog(@"%@",certStore.LastErrorText);
    return;
}

int numCerts = [certStore.NumCertificates intValue];
NSLog(@"%@%d",@"numCerts = ",numCerts);

int i = 0;
while (i < numCerts) {
    // Note: Chilkat also gets the associated private key if it exists.
    // You can simply use the cert in other places in Chilkat where a cert w/ private key is required.
    CkoCert *cert = [certStore GetCertificate: [NSNumber numberWithInt: i]];
    NSLog(@"%@",cert.SubjectDN);
    NSLog(@"%@%d",@"has private key: ",[cert HasPrivateKey]);

    i = i + 1;
}

[certStore CloseCertStore];