(PHP ActiveX) Duplicate OpensSSL to Sign File and Output Binary DER

This example duplicates the following:

openssl smime -sign -in INPUT.xml -signer SIGN.PEM -passin pass:MYPASS -outform der -binary -nodetach -out SIGNED.P7M

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 PEM containing cert + private key.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Pem')
$pem = new COM("Chilkat.Pem");
$success = $pem->LoadPemFile('qa_data/pem/myPem.pem','password');
if ($success != 1) {
    print $pem->LastErrorText . "\n";
    exit;
}

// privkey is a Chilkat.PrivateKey
$privkey = $pem->GetPrivateKey(0);
if ($pem->LastMethodSuccess != 1) {
    print $pem->LastErrorText . "\n";
    exit;
}

// cert is a Chilkat.Cert
$cert = $pem->GetCert(0);
if ($pem->LastMethodSuccess != 1) {

    print $pem->LastErrorText . "\n";
    exit;
}

$success = $crypt->SetSigningCert2($cert,$privkey);
if ($success != 1) {

    print $crypt->LastErrorText . "\n";
    exit;
}

// Alternatively, we could use a .pfx/.p12 file.
// (Chilkat also supports other formats/sources for cert/private keys...)
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert')
$certFromP12 = new COM("Chilkat.Cert");
$success = $certFromP12->LoadPfxFile('qa_data/p12/myP12.p12','password');
if ($success != 1) {
    print $certFromP12->LastErrorText . "\n";
    exit;
}

// The certificate, when loaded from a .pfx/.p12, will automatically 
// include the associated private key, assuming it's present in the .p12.
// We don't have to explicitly provide the private key as in the
// lines of code above that use the PEM file.
$success = $crypt->SetSigningCert($certFromP12);
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 = $crypt->CreateP7M('qa_data/infile.anything','qa_output/outfile.p7m');
if ($success != 1) {
    print $crypt->LastErrorText . "\n";
    exit;
}

print 'Success.' . "\n";

?>