PHP Requires Chilkat v11.0.0+
Chilkat2 PHP
RFC3161 Timestamp Client - Fetch from Timestamp Authority (TSA) and Verify
See more HTTP Examples
Sends an RFC 3161 timestamp request to a TSA (Timestamp Authority) server and validates the timestamp token response.Chilkat PHP Downloads
<?php
use Chilkat2\BinData;
use Chilkat2\Cert;
use Chilkat2\Crypt2;
use Chilkat2\DtObj;
use Chilkat2\Http;
use Chilkat2\HttpResponse;
use Chilkat2\JsonObject;
// 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"
$crypt = new Crypt2();
$crypt->HashAlgorithm = 'sha256';
$crypt->EncodingMode = 'base64';
$base64Hash = $crypt->HashStringENC('Hello World');
$http = new Http();
$requestToken = new BinData();
$optionalPolicyOid = '';
$addNonce = false;
$requestTsaCert = true;
// Create a time-stamp request token
try {
$http->CreateTimestampRequest('sha256', $base64Hash, $optionalPolicyOid, $addNonce, $requestTsaCert, $requestToken);
// 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 = new HttpResponse();
$http->HttpBd('POST', $tsaUrl, $requestToken, 'application/timestamp-query', $resp);
} catch (\Chilkat2\Exception $e) {
echo $e->getMessage(), "\n";
exit;
}
// Get the timestamp reply from the HTTP response object.
$timestampReply = new BinData();
$resp->GetBodyBd($timestampReply);
// Show the base64 encoded timestamp reply.
echo $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
$tsaCert = new Cert();
try {
$tsaCert->LoadFromFile('qa_data/certs/freetsa.org.cer');
} catch (\Chilkat2\Exception $e) {
echo $e->getMessage(), "\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) {
echo $http->LastErrorText, "\n";
exit;
}
echo 'pkiStatus = ', $pkiStatus, "\n";
$json = new JsonObject();
$http->GetLastJsonData($json);
$json->EmitCompact = false;
echo $json->Emit(), "\n";
// The JSON looks like the following.
// 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="
// }
// }
// }
// ]
// }
// }
// }
$signingTime = new DtObj();
$authAttrSigningTimeUtctime = new DtObj();
$strVal = '';
$certSerialNumber = '';
$certIssuerCN = '';
$certDigestAlgOid = '';
$certDigestAlgName = '';
$contentType = '';
$messageDigest = '';
$signingAlgOid = '';
$signingAlgName = '';
$authAttrContentTypeName = '';
$authAttrContentTypeOid = '';
$authAttrSigningTimeName = '';
$authAttrSigningCertificateName = '';
$authAttrSigningCertificateDer = '';
$authAttrMessageDigestName = '';
$authAttrMessageDigestDigest = '';
$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', false, $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', false, $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;
}