Verify .p7s and Extract Original File

Perl example to verify and unpack the contents of a .p7s to restore the original file.

Download Chilkat Perl Module

use chilkat;

$crypt = new chilkat::CkCrypt2();

#  Any string argument automatically begins the 30-day trial.
$success = $crypt->UnlockComponent("30-day trial");
if ($success != 1) {
    print "Crypt component unlock failed" . "\n";
    exit;
}

#  Find our digital certificate from the Current User certificate store.
$ccs = new chilkat::CkCreateCS();

$certStore = $ccs->OpenCurrentUserStore();

$cert = $certStore->FindCertBySubjectCN("Chilkat Software, Inc.");
if ($cert eq null ) {
    print $cert->lastErrorText() . "\n";

    exit;
}

#  Verify and restore the original file:
$crypt->SetVerifyCert($cert);

$success = $crypt->VerifyP7S("license.p7s","license2.rtf");
if ($success == 0) {
    print $crypt->lastErrorText() . "\n";

    exit;
}

print "Success!" . "\n";