CkPhp Requires Chilkat v11.7.0+

Authenticode Sign a PowerShell Script (.ps1, .psm1, .psd1)

See more Code Signing Examples

Demonstrates how to Authenticode sign a PowerShell script. PowerShell scripts (.ps1), modules (.psm1) and data files (.psd1) can be signed starting in Chilkat v11.7.0. The signature is appended to the file as a comment block, and the file keeps its text encoding. 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 PowerShell files requires Chilkat v11.7.0 or later.
//  The same code signs a script (.ps1), a module (.psm1), or a data file (.psd1).

//  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;
}

//  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');

$scriptPath = 'C:/someDir/Deploy.ps1';

$signer = new CkCodeSign();

//  The script is modified in place.  The signature is appended to the end of the file as a comment block:
//  
//    # SIG # Begin signature block
//    # MIIoKgYJKoZIhvcNAQcCoIIoGzCCKBcCAQExDzANBglghkgBZQMEAgEFADB5Bgor
//    # ...
//    # SIG # End signature block
//  
//  The text encoding of the file (UTF-8, UTF-8 with BOM, or UTF-16) is kept.
//  If the script is already signed, the new signature block replaces the existing one.
$success = $signer->AddSignature($scriptPath,$cert,$json);
if ($success == false) {
    print $signer->lastErrorText() . "\n";
    exit;
}

print 'Signed the PowerShell script.' . "\n";

//  Verify the signature that was just added.
//  Any change made to the script after it is signed, even to a comment, invalidates the signature.
$sigInfo = new CkJsonObject();
$valid = $signer->VerifySignature($scriptPath,$sigInfo);
if ($valid == false) {
    print $signer->lastErrorText() . "\n";
    exit;
}

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

?>