Zig Requires Chilkat v11.0.0+
Zig
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 Zig Downloads
const std = @import("std");
const chilkat = @import("chilkat");
pub fn main(init: std.process.Init) !void {
const alloc = init.arena.allocator();
// 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"
const crypt = try chilkat.Crypt2.init();
defer crypt.deinit();
crypt.setHashAlgorithm("sha256");
crypt.setEncodingMode("base64");
const base64_hash = try crypt.hashStringENC(alloc, "Hello World");
const http = try chilkat.Http.init();
defer http.deinit();
const request_token = try chilkat.BinData.init();
defer request_token.deinit();
const optional_policy_oid = "";
const add_nonce = false;
const request_tsa_cert = true;
// Create a time-stamp request token
http.createTimestampRequest("sha256", base64_hash, optional_policy_oid, add_nonce, request_tsa_cert, request_token) catch {
std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
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 tsa_url: [:0]const u8 = "https://freetsa.org/tsr";
// Another timestamp server you could try is: http://timestamp.digicert.com
tsa_url = "http://timestamp.digicert.com";
const resp = try chilkat.HttpResponse.init();
defer resp.deinit();
http.httpBd("POST", tsa_url, request_token, "application/timestamp-query", resp) catch {
std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
return;
};
// Get the timestamp reply from the HTTP response object.
const timestamp_reply = try chilkat.BinData.init();
defer timestamp_reply.deinit();
resp.getBodyBd(timestamp_reply) catch {};
// Show the base64 encoded timestamp reply.
std.debug.print("{s}\n", .{try timestamp_reply.getEncoded(alloc, "base64")});
// Let's verify the timestamp reply against the TSA's cert, which we've previously downloaded.
// See https://freetsa.org/index_en.php
const tsa_cert = try chilkat.Cert.init();
defer tsa_cert.deinit();
tsa_cert.loadFromFile("qa_data/certs/freetsa.org.cer") catch {
std.debug.print("{s}\n", .{try tsa_cert.getLastErrorText(alloc)});
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
const pki_status = http.verifyTimestampReply(timestamp_reply, tsa_cert);
if (pki_status < 0) {
std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
return;
}
std.debug.print("pkiStatus = {d}\n", .{pki_status});
const json = try chilkat.JsonObject.init();
defer json.deinit();
http.getLastJsonData(json);
json.setEmitCompact(false);
std.debug.print("{s}\n", .{try json.emit(alloc)});
// 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="
// }
// }
// }
// ]
// }
// }
// }
const signing_time = try chilkat.DtObj.init();
defer signing_time.deinit();
const auth_attr_signing_time_utctime = try chilkat.DtObj.init();
defer auth_attr_signing_time_utctime.deinit();
var str_val: [:0]const u8 = "";
var cert_serial_number: [:0]const u8 = "";
var cert_issuer_cn: [:0]const u8 = "";
var cert_digest_alg_oid: [:0]const u8 = "";
var cert_digest_alg_name: [:0]const u8 = "";
var content_type: [:0]const u8 = "";
var message_digest: [:0]const u8 = "";
var signing_alg_oid: [:0]const u8 = "";
var signing_alg_name: [:0]const u8 = "";
var auth_attr_content_type_name: [:0]const u8 = "";
var auth_attr_content_type_oid: [:0]const u8 = "";
var auth_attr_signing_time_name: [:0]const u8 = "";
var auth_attr_signing_certificate_name: [:0]const u8 = "";
var auth_attr_signing_certificate_der: [:0]const u8 = "";
var auth_attr_message_digest_name: [:0]const u8 = "";
var auth_attr_message_digest_digest: [:0]const u8 = "";
_ = json.intOf("timestampReply.pkiStatus.value");
_ = try json.stringOf(alloc, "timestampReply.pkiStatus.meaning");
var i: i32 = 0;
var count_i: i32 = json.sizeOfArray("pkcs7.verify.digestAlgorithms");
while (i < count_i) {
json.setI(i);
str_val = try json.stringOf(alloc, "pkcs7.verify.digestAlgorithms[i]");
i = i + 1;
}
i = 0;
count_i = json.sizeOfArray("pkcs7.verify.signerInfo");
while (i < count_i) {
json.setI(i);
cert_serial_number = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].cert.serialNumber");
cert_issuer_cn = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].cert.issuerCN");
cert_digest_alg_oid = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].cert.digestAlgOid");
cert_digest_alg_name = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].cert.digestAlgName");
content_type = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].contentType");
json.dtOf("pkcs7.verify.signerInfo[i].signingTime", false, signing_time) catch {};
message_digest = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].messageDigest");
signing_alg_oid = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].signingAlgOid");
signing_alg_name = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].signingAlgName");
auth_attr_content_type_name = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\".name");
auth_attr_content_type_oid = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\".oid");
auth_attr_signing_time_name = try json.stringOf(alloc, "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, auth_attr_signing_time_utctime) catch {};
auth_attr_signing_certificate_name = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.12\".name");
auth_attr_signing_certificate_der = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.12\".der");
auth_attr_message_digest_name = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\".name");
auth_attr_message_digest_digest = try json.stringOf(alloc, "pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\".digest");
i = i + 1;
}
}