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Objective-C

Use HTTPS Client Certificate from .cer and .key Files

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Demonstrates how to load a cert + private key from .cer and .key (base64) files and use it for mutual TLS authentication (client-side certificate).

Chilkat Objective-C Downloads

Objective-C
#import <CkoHttp.h>
#import <CkoCert.h>
#import <CkoPrivateKey.h>
#import <CkoBinData.h>

BOOL success = NO;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

CkoHttp *http = [[CkoHttp alloc] init];

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

//  Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
success = [cert LoadFromFile: @"qa_data/certs/sample_cert_a.cer"];
if (success != YES) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

//  Load the private key.
CkoBinData *bd = [[CkoBinData alloc] init];
success = [bd LoadFile: @"qa_data/certs/sample_key_a.key"];
success = [privKey LoadAnyFormat: bd password: @"privateKeyPasswordIfNecessary"];
if (success != YES) {
    NSLog(@"%@",privKey.LastErrorText);
    return;
}

//  Associate the private key with the cert.
success = [cert SetPrivateKey: privKey];
if (success != YES) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

//  Set the certificate to be used for mutual TLS authentication
//  (i.e. sets the client-side certificate for two-way TLS authentication)
success = [http SetSslClientCert: cert];
if (success != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

//  At this point, the HTTP object instance is setup with the client-side cert, and any SSL/TLS
//  connection will automatically use it if the server demands a client-side cert.