(Objective-C) Load P7B and Iterate Certificates

Demonstrates how to load a .p7b containing one or more certificates access each of them.

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#import <CkoGlobal.h>
#import <CkoPem.h>
#import <CkoCert.h>

// Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
// by calling UnlockBundle.  It requires a Bundle unlock code.
CkoGlobal *chilkatGlob = [[CkoGlobal alloc] init];
BOOL success = [chilkatGlob UnlockBundle: @"Anything for 30-day trial."];
if (success != YES) {
    NSLog(@"%@",chilkatGlob.LastErrorText);
    return;
}

// The Chilkat PEM class was introduced in v9.5.0.49.  
// It requires the bundle to be unlocked, as shown above.
CkoPem *pem = [[CkoPem alloc] init];

// Load the .p7b from a file.
success = [pem LoadP7bFile: @"../myCertFiles/myP7b.p7b"];
if (success != YES) {
    NSLog(@"%@",pem.LastErrorText);
    return;
}

// Note: If the app already has the p7b loaded in memory, the LoadP7b method
// may be called instead.  (see the online reference documentation)

// Iterate over the certificates.
int numCerts = [pem.NumCerts intValue];
int i = 0;

while (i < numCerts) {

    CkoCert *cert = [pem GetCert: [NSNumber numberWithInt: i]];
    NSLog(@"%@%d%@%@",@"Certificate ",i,@" : ",cert.SubjectDN);

    i = i + 1;
}