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(JavaScript) 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 v11.0.0 or greater.
var success = false;
// 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 crypt = new CkCrypt2();
crypt.HashAlgorithm = "sha256";
crypt.EncodingMode = "base64";
var base64Hash = crypt.HashStringENC("Hello World");
var http = new CkHttp();
var requestToken = new CkBinData();
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 == false) {
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";
var resp = new CkHttpResponse();
success = http.HttpBd("POST",tsaUrl,requestToken,"application/timestamp-query",resp);
if (success == false) {
console.log(http.LastErrorText);
return;
}
// Get the timestamp reply from the HTTP response object.
var timestampReply = new CkBinData();
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 CkCert();
success = tsaCert.LoadFromFile("qa_data/certs/freetsa.org.cer");
if (success == false) {
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);
var json = new CkJsonObject();
http.GetLastJsonData(json);
json.EmitCompact = false;
console.log(json.Emit());
// 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="
// }
// }
// }
// ]
// }
// }
// }
var signingTime = new CkDtObj();
var authAttrSigningTimeUtctime = new CkDtObj();
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;
}
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