Encrypt and Sign
This demo will encrypt and sign a PDF document.
PHP
<?php
use setasign\SetaPDF2\Core\Document;
use setasign\SetaPDF2\Core\SecHandler\SecHandler;
use setasign\SetaPDF2\Core\SecHandler\SecHandlerInterface;
use setasign\SetaPDF2\Core\SecHandler\Standard\Aes256;
use setasign\SetaPDF2\Core\Writer\HttpWriter;
use setasign\SetaPDF2\Signer\Signature\Module\Pades as PadesModule;
use setasign\SetaPDF2\Signer\Signer;
// load and register the autoload function
require_once __DIR__ . '/../../../../../bootstrap.php';
$writer = new HttpWriter('encrypted-and-signed.pdf');
$document = Document::loadByFilename(
$assetsDirectory . '/pdfs/lenstown/Laboratory-Report.pdf',
$writer
);
$ownerPassword = 'AVerySecretOwnerPassword';
$userPassword = 'ANotherVerySecretUserPassword';
// all permissions but printing
$permissions = SecHandler::PERM_ACCESSIBILITY
| SecHandler::PERM_ANNOT
| SecHandler::PERM_ASSEMBLE
| SecHandler::PERM_COPY
| SecHandler::PERM_MODIFY
| SecHandler::PERM_FILL_FORM
;
// create a security handler
$secHandler = Aes256::create(
$document, $ownerPassword, $userPassword, $permissions
);
// and pass it to the document instance
$document->setSecHandler($secHandler);
// let's create an authentication callback
$authCallback = static function(SecHandlerInterface $secHandler) use ($ownerPassword) {
$secHandler->auth($ownerPassword);
};
// create a signer instance and pass the callback
$signer = new Signer($document, $authCallback);
// add a signature field
$field = $signer->addSignatureField();
// and define that you want to use this field
$signer->setSignatureFieldName($field->getQualifiedName());
$certificatePath = $assetsDirectory . '/certificates/setapdf-no-pw.pem';
// now create a signature module
$module = new PadesModule();
// pass the path to the certificate
$module->setCertificate('file://' . $certificatePath);
// set the path to the private key (in this demo the key is also saved in the certificate file)
$module->setPrivateKey('file://' . $certificatePath, '');
// sign the document with the module
$signer->sign($module);
