(PHP ActiveX) Duplicate OpensSSL to Create Signature using Cert and Key Files

This example duplicates the following:

openssl smime –sign -in something.xml -out something.der -signer mycert.crt -inkey cert.key -outform der –nodetach

Note: Although "smime" is the OpenSSL command, it's not actually producing S/MIME. The arguments "-outform der -binary" indicates that the output is binary DER (i.e. the PKCS7 binary signature). The input can be any type of file: XML, PDF, JPG, ... *anything*...

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2')
$crypt = new COM("Chilkat.Crypt2");

// Load the cert and private key from separate files.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert')
$cert = new COM("Chilkat.Cert");
$success = $cert->LoadFromFile('myCert.crt');
if ($success != 1) {
    print $cert->LastErrorText . "\n";
    exit;
}

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData')
$bd = new COM("Chilkat.BinData");
$success = $bd->LoadFile('cert.key');
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.PrivateKey')
$privkey = new COM("Chilkat.PrivateKey");
// Load from any format private key.
// If the file does not need a password, the 2nd arg is ignored.
$success = $privkey->LoadAnyFormat($bd,'password_if_needed');
if ($success != 1) {
    print $privkey->LastErrorText . "\n";
    exit;
}

$success = $crypt->SetSigningCert2($cert,$privkey);
if ($success != 1) {
    print $crypt->LastErrorText . "\n";
    exit;
}

// Create the opaque signature (PKCS7 binary DER that contains both the signature and original file data).
$success = $crypt->CreateP7M('qa_data/infile.anything','qa_output/outfile.der');
if ($success != 1) {
    print $crypt->LastErrorText . "\n";
    exit;
}

print 'Success.' . "\n";

?>