Objective-C

Get Issuer Certificate Information

See more Certificates Examples

A certificate contains information about its issuer. This example demonstrates how to get the issuer information from a certificate. Objective-C

#import <CkoCert.h>

BOOL success = NO;

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

success = [cert LoadFromFile: @"qa_data/certs/sample.cer"];
if (success == NO) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

//  Get issuer information:

//  -----------------------------------------------------------------------
//  (Not all subject fields may exist depending on the issuer certificate.)
//  -----------------------------------------------------------------------

//  Issuer DN (Distinguished Name, i.e. all the Issuer subject parts)
NSLog(@"%@%@",@"DN: ",cert.IssuerDN);

//  Common Subject parts:
//  Issuer Common Name
NSLog(@"%@%@",@"CN: ",cert.IssuerCN);

//  Issuer Country
NSLog(@"%@%@",@"C: ",cert.IssuerC);

//  Issuer Email address
NSLog(@"%@%@",@"E: ",cert.IssuerE);

//  Issuer Locality
NSLog(@"%@%@",@"L: ",cert.IssuerL);

//  Issuer Organization
NSLog(@"%@%@",@"O: ",cert.IssuerO);

//  Issuer Organizational Unit
NSLog(@"%@%@",@"OU: ",cert.IssuerOU);

//  Issuer State
NSLog(@"%@%@",@"S: ",cert.IssuerS);