(PHP Extension) Workaround for the deprecated Crypt2.OpaqueSignString method

Shows how to replace the deprecated OpaqueSignString method. (Chilkat is moving away from the use of CkByteData.)

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux

<?php

include("chilkat.php");

$crypt = new CkCrypt2();

$cert = new CkCert();
// ...
// Load the cert from a source such as a .pfx/.p12 file, smart card, USB token, Apple keychain, Windows certificate store, etc.
// 
$success = $crypt->SetSigningCert($cert);

// Sign the utf-8 byte representation of the text.
$crypt->put_Charset('utf-8');

$textToSign = 'This is the text to sign';

// ------------------------------------------------------------------------
// The OpaqueSignString method is deprecated:

$outData = new CkByteData();

$success = $crypt->OpaqueSignString($textToSign,$outData);

// ------------------------------------------------------------------------
// Workaround.
// (Chilkat is moving away from using CkByteData)

$crypt->put_EncodingMode('base64');
$base64_sig = $crypt->opaqueSignStringENC($textToSign);

$bd = new CkBinData();
$bd->AppendEncoded($base64_sig,'base64');

// Access the raw bytes from bd.

?>