(Node.js) 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.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    // 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"
    var success;
    var crypt = new chilkat.Crypt2();
    crypt.HashAlgorithm = "sha256";
    crypt.EncodingMode = "base64";
    var base64Hash = crypt.HashStringENC("Hello World");

    var http = new chilkat.Http();

    var requestToken = new chilkat.BinData();
    var optionalPolicyOid = "";
    var addNonce = false;
    var requestTsaCert = true;

    // Create a time-stamp request token
    success = http.CreateTimestampRequest("sha256",base64Hash,optionalPolicyOid,addNonce,requestTsaCert,requestToken);
    if (success !== true) {
        console.log(http.LastErrorText);
        return;
    }

    // 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
    var tsaUrl = "https://freetsa.org/tsr";
    // Another timestamp server you could try is: http://timestamp.digicert.com
    tsaUrl = "http://timestamp.digicert.com";
    // resp: HttpResponse
    var resp = http.PBinaryBd("POST",tsaUrl,requestToken,"application/timestamp-query",false,false);
    if (http.LastMethodSuccess !== true) {
        console.log(http.LastErrorText);
        return;
    }

    // Get the timestamp reply from the HTTP response object.
    var timestampReply = new chilkat.BinData();
    resp.GetBodyBd(timestampReply);

    // Show the base64 encoded timestamp reply.
    console.log(timestampReply.GetEncoded("base64"));

    // Let's verify the timestamp reply against the TSA's cert, which we've previously downloaded.
    // See https://freetsa.org/index_en.php
    var tsaCert = new chilkat.Cert();
    success = tsaCert.LoadFromFile("qa_data/certs/freetsa.org.cer");
    if (success !== true) {
        console.log(tsaCert.LastErrorText);
        return;
    }

    // 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
    var pkiStatus = http.VerifyTimestampReply(timestampReply,tsaCert);
    if (pkiStatus < 0) {
        console.log(http.LastErrorText);
        return;
    }

    console.log("pkiStatus = " + pkiStatus);

    // json: JsonObject
    var json = http.LastJsonData();
    json.EmitCompact = false;
    console.log(json.Emit());

    // 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="
    //             }
    //           }
    //         }
    //       ]
    //     }
    //   }
    // }

    var signingTime = new chilkat.DtObj();
    var authAttrSigningTimeUtctime = new chilkat.DtObj();
    var strVal;
    var certSerialNumber;
    var certIssuerCN;
    var certDigestAlgOid;
    var certDigestAlgName;
    var contentType;
    var messageDigest;
    var signingAlgOid;
    var signingAlgName;
    var authAttrContentTypeName;
    var authAttrContentTypeOid;
    var authAttrSigningTimeName;
    var authAttrSigningCertificateName;
    var authAttrSigningCertificateDer;
    var authAttrMessageDigestName;
    var authAttrMessageDigestDigest;

    var timestampReplyPkiStatusValue = json.IntOf("timestampReply.pkiStatus.value");
    var timestampReplyPkiStatusMeaning = json.StringOf("timestampReply.pkiStatus.meaning");
    var i = 0;
    var 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;
    }


}

chilkatExample();