PHP ActiveX

Sign String to create a CAdES-T Signature, using HTTP Proxy to Access Timestamp Server

This example will sign a string to create a CAdEST-T signature. It will use an HTTP proxy to access the timestamp server. PHP ActiveX

<?php

$success = 0;

$crypt = new COM("Chilkat.Crypt2");

$cert = new COM("Chilkat.Cert");
$cert->SmartCardPin = '123456';
$success = $cert->LoadFromSmartcard('');
if ($success != 1) {
    print $cert->LastErrorText . "\n";
    exit;
}

$success = $crypt->SetSigningCert($cert);

// Use SHA-256 rather than the default of SHA-1
$crypt->HashAlgorithm = 'sha256';

// Create JSON that tells Chilkat what signing attributes to include:
$attrs = new COM("Chilkat.JsonObject");
$attrs->UpdateBool('contentType',1);
$attrs->UpdateBool('signingTime',1);
$attrs->UpdateBool('messageDigest',1);
$attrs->UpdateBool('signingCertificateV2',1);

// A CAdES-T signature is one that includes a timestampToken created by an online TSA (time stamping authority).
// We must include the TSA's URL, as well as a few options to indicate what is desired.
// Except for the TSA URL, the options shown here are typically what you would need.
$attrs->UpdateBool('timestampToken.enabled',1);
$attrs->UpdateString('timestampToken.tsaUrl','https://freetsa.org/tsr');
$attrs->UpdateBool('timestampToken.addNonce',0);
$attrs->UpdateBool('timestampToken.requestTsaCert',1);
$attrs->UpdateString('timestampToken.hashAlg','sha256');

$crypt->SigningAttributes = $attrs->emit();

$strToSign = 'Hello World!';

$bd = new COM("Chilkat.BinData");
$bd->AppendString($strToSign,'utf-8');

// -------------------------------------------------------------------------
// The purpose of this example is to show how an HTTP object with custom
// settings can be used to access the Internet when signing.
// Access to the Internet is needed to communicate with the timestamp server.
$http = new COM("Chilkat.Http");
// This can be a domain name, hostname, or IP address.
$http->ProxyDomain = '172.16.16.56';
$http->ProxyPort = 808;
$http->ProxyLogin = 'myProxyLogin';
$http->ProxyPassword = 'myProxyPassword';
$crypt->SetTsaHttpObj($http);
// -------------------------------------------------------------------------

// This creates the CAdES-T signature.  During the signature creation, it
// communicates with the TSA to get a timestampToken.
// The contents of bd are signed and replaced with the CAdES-T signature (which embeds the original content).
$success = $crypt->OpaqueSignBd($bd);
if ($success != 1) {
    print $crypt->LastErrorText . "\n";
    exit;
}

// Get the signature in base64 format:
print $bd->getEncoded('base64_mime') . "\n";

print 'Success.' . "\n";

?>