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(PHP ActiveX) RFC3161 Timestamp Client - Fetch from Timestamp Authority (TSA) and Verify

Sends an RFC 3161 timestamp request to a TSA (Timestamp Authority) server and validates the timestamp token response.

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

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// Note: Requires Chilkat v9.5.0.75 or greater.

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

// First sha-256 hash the data that is to be timestamped.
// In this example, the data is the string "Hello World"

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2')
$crypt = new COM("Chilkat.Crypt2");
$crypt->HashAlgorithm = 'sha256';
$crypt->EncodingMode = 'base64';
$base64Hash = $crypt->hashStringENC('Hello World');

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http')
$http = new COM("Chilkat.Http");

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData')
$requestToken = new COM("Chilkat.BinData");
$optionalPolicyOid = '';
$addNonce = 0;
$requestTsaCert = 1;

// Create a time-stamp request token
$success = $http->CreateTimestampRequest('sha256',$base64Hash,$optionalPolicyOid,$addNonce,$requestTsaCert,$requestToken);
if ($success != 1) {
    print $http->LastErrorText . "\n";
    exit;
}

// Send the time-stamp request token to the TSA.
// This is the equivalent of the following CURL command:
// curl -H "Content-Type: application/timestamp-query" --data-binary '@file.tsq' https://freetsa.org/tsr > file.tsr
$tsaUrl = 'https://freetsa.org/tsr';
// Another timestamp server you could try is: http://timestamp.digicert.com
$tsaUrl = 'http://timestamp.digicert.com';
// resp is a Chilkat.HttpResponse
$resp = $http->PBinaryBd('POST',$tsaUrl,$requestToken,'application/timestamp-query',0,0);
if ($http->LastMethodSuccess != 1) {
    print $http->LastErrorText . "\n";
    exit;
}

// Get the timestamp reply from the HTTP response object.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData')
$timestampReply = new COM("Chilkat.BinData");
$resp->GetBodyBd($timestampReply);

// Show the base64 encoded timestamp reply.
print $timestampReply->getEncoded('base64') . "\n";

// Let's verify the timestamp reply against the TSA's cert, which we've previously downloaded.
// See https://freetsa.org/index_en.php
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert')
$tsaCert = new COM("Chilkat.Cert");
$success = $tsaCert->LoadFromFile('qa_data/certs/freetsa.org.cer');
if ($success != 1) {
    print $tsaCert->LastErrorText . "\n";
    exit;
}

// The VerifyTimestampReply method will return one of the following values:
// -1:  The timestampReply does not contain a valid timestamp reply.
// -2: The  timestampReply is a valid timestamp reply, but failed verification using the public key of the tsaCert.
// 0:  Granted and verified.
// 1: Granted and verified, with mods (see RFC 3161)
// 2: Rejected.
// 3: Waiting.
// 4: Revocation Warning
// 5: Revocation Notification
$pkiStatus = $http->VerifyTimestampReply($timestampReply,$tsaCert);
if ($pkiStatus < 0) {
    print $http->LastErrorText . "\n";
    exit;
}

print 'pkiStatus = ' . $pkiStatus . "\n";

// json is a Chilkat.JsonObject
$json = $http->LastJsonData();
$json->EmitCompact = 0;
print $json->emit() . "\n";

// The LastJsonData looks like the following.
// Note: The "timestampReply.pkiStatus" portion of the LastJsonData was added in Chilkat v9.5.0.83

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

// {
//   "timestampReply": {
//     "pkiStatus": {
//       "value": 0,
//       "meaning": "granted"
//     }
//   },
//   "pkcs7": {
//     "verify": {
//       "digestAlgorithms": [
//         "sha256"
//       ],
//       "signerInfo": [
//         {
//           "cert": {
//             "serialNumber": "04CD3F8568AE76C61BB0FE7160CCA76D",
//             "issuerCN": "DigiCert SHA2 Assured ID Timestamping CA",
//             "digestAlgOid": "2.16.840.1.101.3.4.2.1",
//             "digestAlgName": "SHA256"
//           },
//           "contentType": "1.2.840.113549.1.9.16.1.4",
//           "signingTime": "200405023019Z",
//           "messageDigest": "f14zOsdnN9vyyV3HjjBiLzNDi1PF28hAFMODxNkNRZs=",
//           "signingAlgOid": "1.2.840.113549.1.1.1",
//           "signingAlgName": "RSA-PKCSV-1_5",
//           "authAttr": {
//             "1.2.840.113549.1.9.3": {
//               "name": "contentType",
//               "oid": "1.2.840.113549.1.9.16.1.4"
//             },
//             "1.2.840.113549.1.9.5": {
//               "name": "signingTime",
//               "utctime": "200405023019Z"
//             },
//             "1.2.840.113549.1.9.16.2.12": {
//               "name": "signingCertificate",
//               "der": "MBowGDAWBBQDJb1QXtqWMC3CL0+gHkwovig0xQ=="
//             },
//             "1.2.840.113549.1.9.4": {
//               "name": "messageDigest",
//               "digest": "f14zOsdnN9vyyV3HjjBiLzNDi1PF28hAFMODxNkNRZs="
//             }
//           }
//         }
//       ]
//     }
//   }
// }

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.DtObj')
$signingTime = new COM("Chilkat.DtObj");
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.DtObj')
$authAttrSigningTimeUtctime = new COM("Chilkat.DtObj");

$timestampReplyPkiStatusValue = $json->IntOf('timestampReply.pkiStatus.value');
$timestampReplyPkiStatusMeaning = $json->stringOf('timestampReply.pkiStatus.meaning');
$i = 0;
$count_i = $json->SizeOfArray('pkcs7.verify.digestAlgorithms');
while ($i < $count_i) {
    $json->I = $i;
    $strVal = $json->stringOf('pkcs7.verify.digestAlgorithms[i]');
    $i = $i + 1;
}

$i = 0;
$count_i = $json->SizeOfArray('pkcs7.verify.signerInfo');
while ($i < $count_i) {
    $json->I = $i;
    $certSerialNumber = $json->stringOf('pkcs7.verify.signerInfo[i].cert.serialNumber');
    $certIssuerCN = $json->stringOf('pkcs7.verify.signerInfo[i].cert.issuerCN');
    $certDigestAlgOid = $json->stringOf('pkcs7.verify.signerInfo[i].cert.digestAlgOid');
    $certDigestAlgName = $json->stringOf('pkcs7.verify.signerInfo[i].cert.digestAlgName');
    $contentType = $json->stringOf('pkcs7.verify.signerInfo[i].contentType');
    $json->DtOf('pkcs7.verify.signerInfo[i].signingTime',0,$signingTime);
    $messageDigest = $json->stringOf('pkcs7.verify.signerInfo[i].messageDigest');
    $signingAlgOid = $json->stringOf('pkcs7.verify.signerInfo[i].signingAlgOid');
    $signingAlgName = $json->stringOf('pkcs7.verify.signerInfo[i].signingAlgName');
    $authAttrContentTypeName = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.3\'.name');
    $authAttrContentTypeOid = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.3\'.oid');
    $authAttrSigningTimeName = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.5\'.name');
    $json->DtOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.5\'.utctime',0,$authAttrSigningTimeUtctime);
    $authAttrSigningCertificateName = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.16.2.12\'.name');
    $authAttrSigningCertificateDer = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.16.2.12\'.der');
    $authAttrMessageDigestName = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.4\'.name');
    $authAttrMessageDigestDigest = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.4\'.digest');
    $i = $i + 1;
}


?>

 

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