(Objective-C) Load Base64-encoded X.509 Certificate (.cer)

Loads a digital certificate from a base64 encoded DER X.509 Certificate (.cer, .crt) and fetches information about the cert.

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#import <CkoCert.h>

CkoCert *cert = [[CkoCert alloc] init];

BOOL success;

// LoadFromFile will load virtually any certificate format file.
// It will auto-recognize the format and load appropiately.
// A base64-encoded DER X.509 certificate file
// contains the binary DER in base64 encoded form.
// Therefore, it is a text file that will begin like this:
// -----BEGIN CERTIFICATE-----
// MIIFbjCCBFagAwIBAgIGdDPNv/L0MA0GCSqGSIb3DQEBBQUAMIHKMQswCQYDVQQG
// EwJVUzEQMA4GA1UECBMHQXJpem9uYTETMBEGA1UEBxMKU2NvdHRzZGFsZTEaMBgG
// ...

success = [cert LoadFromFile: @"/Users/chilkat/testData/cer/chilkat_base64.cer"];
if (success != YES) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

// DN = "Distinguished Name"
NSLog(@"%@%@",@"SubjectDN:",cert.SubjectDN);

NSLog(@"%@%@",@"Common Name:",cert.SubjectCN);
NSLog(@"%@%@",@"Issuer Common Name:",cert.IssuerCN);

NSLog(@"%@%@",@"Serial Number:",cert.SerialNumber);