(Objective-C) Code Signing using Sectigo USB Token

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Demonstrates how to Authenticode sign an EXE or DLL using a SafeNet USB token from Sectigo.

Requires Chilkat v10.0.0 or greater.

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#import <CkoJsonObject.h>
#import <CkoCert.h>
#import <NSString.h>
#import <CkoCodeSign.h>

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

BOOL success;

// First create the following JSON to specify that SHA256 is to be used,
// and provide timestamp server information.

// {
//   "hashAlg": "sha256",
//   "timestampToken": {
//     "enabled": true,
//     "tsaUrl": "http://timestamp.digicert.com",
//     "requestTsaCert": true,
//     "hashAlg": "sha256"
//   }
// }

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"hashAlg" value: @"sha256"];
[json UpdateBool: @"timestampToken.enabled" value: YES];
[json UpdateString: @"timestampToken.tsaUrl" value: @"http://timestamp.digicert.com"];
[json UpdateBool: @"timestampToken.requestTsaCert" value: YES];
[json UpdateString: @"timestampToken.hashAlg" value: @"sha256"];

// The only difference in signing with a smartcard or USB token
// is that the cert is loaded from a smartcard or USB token, instead of a PFX or from elsewhere
// such as from the Windows certificate store.
CkoCert *cert = [[CkoCert alloc] init];

// Use your USB token PIN (user password).
// It will be a string similar to this:  j6X54nB7-jlp5Cr2
cert.SmartCardPin = @"j6X54nB7-jlp5Cr2";

// Load the certificate based on the serial number.
// *** Use your certificate's serial number.
success = [cert LoadFromSmartcard: @"serial=3FF5B69109BFD4046C92CC0D18EE23C2"];
if (success == NO) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

// Note: If the above fails, then use the SafeNet Authentication Client Tools
// to login to your token using your token password.
// You don't want too many failed logins, otherwise you'll lock the token.
// A successful login will reset number of failed logins back to 0.

// Note: This is to sign Microsoft Windows executables or DLLs
// You can sign .exe or .dll files.
NSString *exePath = @"C:/someDirectory/HelloWorld.exe";

CkoCodeSign *signer = [[CkoCodeSign alloc] init];

// If successful, the following call will apply the signature to the EXE (or DLL).
success = [signer AddSignature: exePath cert: cert options: json];
if (success == NO) {
    NSLog(@"%@",signer.LastErrorText);
    return;
}

NSLog(@"%@",@"Successfully applied the Authenticode signature.");