(Objective-C) Load PKCS12 / PFX and Access Contents

Loads a PKCS12 / PFX file and iterates over the contents which include private keys and certificates.

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#import <CkoPfx.h>
#import <CkoPrivateKey.h>
#import <CkoCert.h>

CkoPfx *pfx = [[CkoPfx alloc] init];

// Load the PKCS12 from a file
BOOL success = [pfx LoadPfxFile: @"/someDir/my.p12" password: @"pfxFilePassword"];
if (success != YES) {
    NSLog(@"%@",pfx.LastErrorText);
    return;
}

int numPrivateKeys = [pfx.NumPrivateKeys intValue];

CkoPrivateKey *privKey = 0;

NSLog(@"%@",@"Private Keys:");

int i = 0;
while (i < numPrivateKeys) {
    privKey = [pfx GetPrivateKey: [NSNumber numberWithInt: i]];

    // Do something with the private key ...

    i = i + 1;
}

CkoCert *cert = 0;

int numCerts = [pfx.NumCerts intValue];

NSLog(@"%@",@"Certs:");
i = 0;
while (i < numCerts) {
    cert = [pfx GetCert: [NSNumber numberWithInt: i]];
    NSLog(@"%@",cert.SubjectDN);

    // If the certificate has a private key (one of the private keys within the PFX)
    // then it can also be obtained via the certificate object:
    if ([cert HasPrivateKey] == YES) {

        NSLog(@"%@",@"Has private key!");

        privKey = [cert ExportPrivateKey];
        // ...

    }

    i = i + 1;
}