(JavaScript) Create a CAdES-T Signature

Demonstrates how to create a signature with an external timestamp that certifies the time of signing. This requires an online TSA (Time Stamping Authority) service that is capable of producing RFC 3161 compliant timestamps.

Note: This example requires Chilkat v9.5.0.78 or greater.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

var crypt = new CkCrypt2();

// This example will use a certificate + private key from a .pfx/.p12 file.
// On Windows systems, it is also possible to use certs on smartcards/usb tokens or certs pre-installed in the Windows registry.
var cert = new CkCert();

var pfxPath = "qa_data/pfx/myCertAndKey.p12";
var pfxPassword = "test123";

success = cert.LoadPfxFile(pfxPath,pfxPassword);
if (success !== true) {
    console.log(cert.LastErrorText);
    return;
}

success = crypt.SetSigningCert(cert);

// Use SHA-256 rather than the default of SHA-1
crypt.HashAlgorithm = "sha256";

// Create JSON that tells Chilkat what signing attributes to include:
var attrs = new CkJsonObject();
attrs.UpdateBool("contentType",true);
attrs.UpdateBool("signingTime",true);
attrs.UpdateBool("messageDigest",true);
attrs.UpdateBool("signingCertificateV2",true);

// A CAdES-T signature is one that includes a timestampToken created by an online TSA (time stamping authority).
// We must include the TSA's URL, as well as a few options to indicate what is desired.
// Except for the TSA URL, the options shown here are typically what you would need.
attrs.UpdateBool("timestampToken.enabled",true);
attrs.UpdateString("timestampToken.tsaUrl","https://freetsa.org/tsr");
attrs.UpdateBool("timestampToken.addNonce",false);
attrs.UpdateBool("timestampToken.requestTsaCert",true);
attrs.UpdateString("timestampToken.hashAlg","sha256");

crypt.SigningAttributes = attrs.Emit();

var inFile = "qa_data/json/sample.json";
var outFile = "qa_output/sample_cades_t.p7m";

// This creates the CAdES-T signature.  During the signature creation, it
// communicates with the TSA to get a timestampToken.
success = crypt.CreateP7M(inFile,outFile);
if (success !== true) {
    console.log(crypt.LastErrorText);
    return;
}

console.log("Success.");