PHP Extension

Create Egypt ITIDA CAdES-BES .p7s Signature (with strings in-memory)

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements.

Note: This example requires Chilkat v9.5.0.75 or greater.

PHP Extension

<?php

include("chilkat.php");

$success = false;

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

$crypt = new CkCrypt2();

$cert = new CkCert();

// There are many ways to load the certificate.  
// This example was created for a customer using an ePass2003 USB token.
// Assuming the USB token is the only source of a hardware-based private key..
$success = $cert->LoadFromSmartcard('');
if ($success != true) {
    print $cert->lastErrorText() . "\n";
    exit;
}

// Tell the crypt component to use this cert.
$success = $crypt->SetSigningCert($cert);
if ($success != true) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

$cmsOptions = new CkJsonObject();
// Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
$cmsOptions->UpdateBool('DigestData',true);
$cmsOptions->UpdateBool('OmitAlgorithmIdNull',true);
$crypt->put_CmsOptions($cmsOptions->emit());

// The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
// To create a CAdES-BES signature, set this property equal to true. 
$crypt->put_CadesEnabled(true);

$crypt->put_HashAlgorithm('sha256');

$jsonSigningAttrs = new CkJsonObject();
$jsonSigningAttrs->UpdateInt('contentType',1);
$jsonSigningAttrs->UpdateInt('signingTime',1);
$jsonSigningAttrs->UpdateInt('messageDigest',1);
$jsonSigningAttrs->UpdateInt('signingCertificateV2',1);
$crypt->put_SigningAttributes($jsonSigningAttrs->emit());

// By default, all the certs in the chain of authentication are included in the signature.
// If desired, we can choose to only include the signing certificate:
$crypt->put_IncludeCertChain(false);

// Make sure we sign the utf-8 byte representation of the JSON string
$crypt->put_Charset('utf-8');

// Create the CAdES-BES signature.
$textToSign = '\'issuer\'\'address\'\'branchID\'\'0\'\'country\'\'EG\'\'regionCity...';

$crypt->put_EncodingMode('base64');
$sigBase64 = $crypt->signStringENC($textToSign);
if ($crypt->get_LastMethodSuccess() == false) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

print 'Base64 signature:' . "\n";
print $sigBase64 . "\n";

?>