CkPhp Requires Chilkat v11.7.0+

Authenticode Sign a Windows Installer Package (MSI)

See more Code Signing Examples

Demonstrates how to Authenticode sign a Windows Installer package (.msi). Signing MSI packages requires Chilkat v11.7.0 or later. The package is signed in place, and the certificate must have an RSA key: Windows does not accept the signature of an MSI that was signed with an ECDSA certificate. CkPhp

<?php

include("chilkat.php");

$success = false;

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

//  Signing a Windows Installer package (.msi) requires Chilkat v11.7.0 or later.

//  Load the code signing certificate.  It must have access to its private key.
$cert = new CkCert();
$success = $cert->LoadPfxFile('C:/someDir/myCodeSigningCert.pfx','pfx password');
if ($success == false) {
    print $cert->lastErrorText() . "\n";
    exit;
}

//  Use a certificate with an RSA key to sign an MSI.
//  Windows does not accept the signature of an MSI that was signed with an ECDSA certificate
//  (signtool verify and the Digital Signatures tab of the file's properties report it as invalid).
//  This is a limitation of signed MSI files on Windows.  It does not apply to EXE, DLL, PowerShell,
//  or VBScript files, which can be signed with either kind of certificate.
if ($cert->IsRsa() == false) {
    print 'Use an RSA code signing certificate to sign an MSI.' . "\n";
    exit;
}

//  Sign with SHA256, and ask a timestamp authority for a timestamp.  A timestamp lets the
//  signature continue to validate after the code signing certificate has expired.
//  
//  {
//    "hashAlg": "sha256",
//    "timestampToken": {
//      "enabled": true,
//      "tsaUrl": "http://timestamp.digicert.com",
//      "requestTsaCert": true,
//      "hashAlg": "sha256"
//    }
//  }
$json = new CkJsonObject();
$json->UpdateString('hashAlg','sha256');
$json->UpdateBool('timestampToken.enabled',true);
$json->UpdateString('timestampToken.tsaUrl','http://timestamp.digicert.com');
$json->UpdateBool('timestampToken.requestTsaCert',true);
$json->UpdateString('timestampToken.hashAlg','sha256');

$msiPath = 'C:/someDir/MyAppSetup.msi';

$signer = new CkCodeSign();

//  The .msi is modified in place.  The signature is stored in the package's digital signature stream.
//  If the package is already signed, the new signature replaces the existing one.
$success = $signer->AddSignature($msiPath,$cert,$json);
if ($success == false) {
    print $signer->lastErrorText() . "\n";
    exit;
}

print 'Signed the MSI.' . "\n";

//  Verify the signature that was just added.
$sigInfo = new CkJsonObject();
$valid = $signer->VerifySignature($msiPath,$sigInfo);
if ($valid == false) {
    print $signer->lastErrorText() . "\n";
    exit;
}

print 'The signature is valid.' . "\n";

?>