CkPhp Requires Chilkat v11.7.0+

Verify the Authenticode Signature of an MSI, PowerShell, or VBScript File

See more Code Signing Examples

Demonstrates how to verify the Authenticode signature of a Windows Installer package (.msi), a PowerShell file (.ps1, .psm1, .psd1), or a VBScript file (.vbs), and how to get the certificate of the signer. Verifying these file types requires Chilkat v11.7.0 or later. 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.

//  Starting in Chilkat v11.7.0, VerifySignature can verify the Authenticode signature of
//    - Windows Installer packages (.msi)
//    - PowerShell scripts, modules, and data files (.ps1, .psm1, .psd1)
//    - VBScript files (.vbs)
//  in addition to EXE and DLL files.

//  This example verifies a signed PowerShell script.
//  To verify an .msi or a .vbs, pass the path of that file instead.
$path = 'C:/someDir/Deploy.ps1';

$codeSign = new CkCodeSign();
$sigInfo = new CkJsonObject();

//  VerifySignature returns true if the file has a valid Authenticode signature.
//  It returns false if the file is not signed, if the file was changed after it was signed,
//  or if the signing certificate is not trusted.
$valid = $codeSign->VerifySignature($path,$sigInfo);
if ($valid == false) {
    //  The LastErrorText explains why the verification failed.
    print $codeSign->lastErrorText() . "\n";
    exit;
}

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

//  The details of the signature are returned in the JSON, in the same layout as for an EXE or DLL.
//  See Verify Authenticode Signature of EXE or DLL for a sample of the JSON and code that parses it.
print 'signing algorithm: ' . $sigInfo->stringOf('pkcs7.verify.signerInfo[0].signingAlgName') . "\n";
print 'hash algorithm: ' . $sigInfo->stringOf('pkcs7.verify.signerInfo[0].cert.digestAlgName') . "\n";

//  Get the certificate of the signer.
//  The signer certificate is available only after a call to VerifySignature that returned true.
//  It is the public certificate only.  It does not include the signer's private key.
$signerCert = new CkCert();
$success = $codeSign->GetSignerCert($signerCert);
if ($success == false) {
    print $codeSign->lastErrorText() . "\n";
    exit;
}

print 'signed by: ' . $signerCert->subjectCN() . "\n";
print 'certificate issued by: ' . $signerCert->issuerCN() . "\n";
print 'certificate serial number: ' . $signerCert->serialNumber() . "\n";
print 'certificate valid until: ' . $signerCert->validToStr() . "\n";

?>