Objective-C

HTTP TLS Mutual Authentication (Client-Side Certificate)

See more HTTP Examples

This example demonstrates what to do when a TLS connection requires a client-side certificate, also known as "two-way authentication" or "mutual authentication". The Chilkat API provides a few standard methods for setting the client-side certificate:

• SetSslClientCert
• SetSslClientPem
• SetSslClientPfx

These methods are present in any Chilkat class that has SSL/TLS functionality. When the SSL client cert is set via one of these methods, it tells the API to use it for two-way (i.e. mutual) authentication. In all possible tasks, whether it is a POST, GET, PUT, an Amazon S3 method, etc., the only thing required for implementing the two-way authentication is to make a successful call to one of the above SetSsl* methods.

Objective-C

#import <CkoHttp.h>

BOOL success = NO;

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

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

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

// Note: The certificate used for the client-side of TLS mutual authentication
// must have the associated private key available. (PFX files typically store both
// the certificate and associated private key.)

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