Rust Requires Chilkat v11.0.0+
Rust
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 Rust Downloads
// 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"
let crypt = chilkat::Crypt2::new();
crypt.set_hash_algorithm("sha256");
crypt.set_encoding_mode("base64");
let base64_hash = crypt.hash_string_enc("Hello World").unwrap_or_default();
let http = chilkat::Http::new();
let request_token = chilkat::BinData::new();
let optional_policy_oid = String::new();
let add_nonce = false;
let request_tsa_cert = true;
// Create a time-stamp request token
if http.create_timestamp_request("sha256", &base64_hash, &optional_policy_oid, add_nonce, request_tsa_cert, &request_token).is_err() {
println!("{}", http.last_error_text());
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
let mut tsa_url = "https://freetsa.org/tsr".to_string();
// Another timestamp server you could try is: http://timestamp.digicert.com
tsa_url = "http://timestamp.digicert.com".to_string();
let resp = chilkat::HttpResponse::new();
if http.http_bd("POST", &tsa_url, &request_token, "application/timestamp-query", &resp).is_err() {
println!("{}", http.last_error_text());
return;
}
// Get the timestamp reply from the HTTP response object.
let timestamp_reply = chilkat::BinData::new();
let _ = resp.get_body_bd(×tamp_reply);
// Show the base64 encoded timestamp reply.
println!("{}", timestamp_reply.get_encoded("base64").unwrap_or_default());
// Let's verify the timestamp reply against the TSA's cert, which we've previously downloaded.
// See https://freetsa.org/index_en.php
let tsa_cert = chilkat::Cert::new();
if tsa_cert.load_from_file("qa_data/certs/freetsa.org.cer").is_err() {
println!("{}", tsa_cert.last_error_text());
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
let pki_status = http.verify_timestamp_reply(×tamp_reply, &tsa_cert);
if pki_status < 0 {
println!("{}", http.last_error_text());
return;
}
println!("pkiStatus = {}", pki_status);
let json = chilkat::JsonObject::new();
http.get_last_json_data(&json);
json.set_emit_compact(false);
println!("{}", json.emit().unwrap_or_default());
// 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="
// }
// }
// }
// ]
// }
// }
// }
let signing_time = chilkat::DtObj::new();
let auth_attr_signing_time_utctime = chilkat::DtObj::new();
let timestamp_reply_pki_status_value = json.int_of("timestampReply.pkiStatus.value");
let timestamp_reply_pki_status_meaning = json.string_of("timestampReply.pkiStatus.meaning").unwrap_or_default();
let mut i = 0;
let mut count_i = json.size_of_array("pkcs7.verify.digestAlgorithms");
while i < count_i {
json.set_i(i);
let _ = json.string_of("pkcs7.verify.digestAlgorithms[i]").unwrap_or_default();
i = i + 1;
}
i = 0;
count_i = json.size_of_array("pkcs7.verify.signerInfo");
while i < count_i {
json.set_i(i);
let _ = json.string_of("pkcs7.verify.signerInfo[i].cert.serialNumber").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].cert.issuerCN").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].cert.digestAlgOid").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].cert.digestAlgName").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].contentType").unwrap_or_default();
let _ = json.dt_of("pkcs7.verify.signerInfo[i].signingTime", false, &signing_time);
let _ = json.string_of("pkcs7.verify.signerInfo[i].messageDigest").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].signingAlgOid").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].signingAlgName").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\".name").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\".oid").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.5\".name").unwrap_or_default();
let _ = json.dt_of("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.5\".utctime", false, &auth_attr_signing_time_utctime);
let _ = json.string_of("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.12\".name").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.12\".der").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\".name").unwrap_or_default();
let _ = json.string_of("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\".digest").unwrap_or_default();
i = i + 1;
}