PHP

Extract a File from a .p7m (PKCS7 Signed-Data)

See more Encryption Examples

_LANGUAGE_ example to extract the original file from a .p7m (Signed-Data PKCS7 Format) The .p7m contains the signed contents of the original file. It can be verified and restored by calling VerifyP7M. Chilkat2 PHP

<?php

use Chilkat2\Crypt2;

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

$crypt = new Crypt2();

// What is a .p7m file?

$outputFile = '/Users/chilkat/testData/pdf/sample.pdf';
$inFile = '/Users/chilkat/testData/p7m/sample.pdf.p7m';

// Verify and restore the original file:
try {
    $crypt->VerifyP7M($inFile, $outputFile);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo "Success!\n";