PHP ActiveX Requires Chilkat v10.1.2+

Create PKCS7 Signed File (.p7m)

See more Encryption Examples

Demonstrates how to sign a file to create a .p7m that contains both the file contents and the signature. PHP ActiveX

<?php

$success = 0;

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

$crypt = new COM("Chilkat.Crypt2");

$certStore = new COM("Chilkat.CertStore");

//  Load a PFX file into a certificate store object.
$success = $certStore->LoadPfxFile('myPfx.pfx','pfxPassword');
if ($success != 1) {
    print $certStore->LastErrorText . "\n";
    exit;
}

//  Get the certificate by subject common name.
//  This should be the cert within the PFX that also
//  has a private key (also stored within the PFX).
$jsonCN = new COM("Chilkat.JsonObject");
$jsonCN->UpdateString('CN','myCert');
$cert = new COM("Chilkat.Cert");
$success = $certStore->FindCert($jsonCN,$cert);
if ($success == 0) {
    print $certStore->LastErrorText . "\n";
    exit;
}

//  Tell the crypt object to use the certificate for signing:
$success = $crypt->SetSigningCert($cert);

//  Sign a file, producing a .p7m as output.
//  The input file is unchanged, the test.p7m contains the 
//  contents of the input file and the signature.
$inFile = 'test.txt';
$outFile = 'testp7m';
$success = $crypt->CreateP7M($inFile,$outFile);
if ($success != 1) {
    print $crypt->LastErrorText . "\n";
    exit;
}

print 'Success!' . "\n";

?>