Objective-C

Convert Cert + Key to PEM and PFX

See more Certificates Examples

This example is based on the following question from a Chilkat customer:

We receive 2 files :

    MyCertificate.p7b
    MyCertificate-privatekey.pkey

We have to transform these certificate like this:

First convert it to PEM like this:

openssl pkcs7 -in MyCertificate.p7b -inform DER -out MyCertificate.pem -print_certs

Now we get MyCertificate.pem

Last step, we need to convert it to pfx file:

openssl pkcs12 -export -inkey moncertificat-privatekey.pkey  -in  moncertificat.pem -out moncertificat.pfx

Is there a way to make all these steps with Chilkat ?

I will be nice to include this directly in our software instead of askig the user to do it manualy.

Objective-C

#import <CkoCert.h>
#import <CkoPrivateKey.h>

BOOL success = NO;

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.
// (The various privKey methods that load from a file will automatically detect
// the format.  It doesn't actually matter if you try to load a non-PKCS8 format private key
// by calling LoadPkcs8EncryptedFile -- internally Chilkat will detect the format and will load
// based on what it finds.)
success = [privKey LoadPkcs8EncryptedFile: @"qa_data/certs/sample_key_a.pkcs8" password: @"password"];
if (success != YES) {
    NSLog(@"%@",privKey.LastErrorText);
    return;
}

// Write the cert as PEM.
success = [cert ExportCertPemFile: @"qa_output/cert.pem"];

// Or get the PEM string directly...
NSLog(@"%@",[cert ExportCertPem]);

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

// Write the cert + private key to a .pfx file.
success = [cert ExportToPfxFile: @"qa_data/myPfx.pfx" pfxPassword: @"password" bIncludeCertChain: YES];
if (success != YES) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

NSLog(@"%@",@"Success.");