JavaScript

X509Certificate GetCertHash SHA256

Shows how to get the SHA256 hash of a certificate.

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.

JavaScript

var success = false;

var cert = new CkCert();

// Load a certificate object with a certificate.
// The certificate object could have come from any source,
// or perhaps was obtained from another Chilkat function.
// The source does not matter.  What matters is that we have
// a cert object loaded with the certificate..
success = cert.LoadFromFile("qa_data/certs/cert_test123.cer");
if (success !== true) {
    console.log(cert.LastErrorText);
    return;
}

// Get the binary DER of the certificae, and compute the SHA256 hash:
var bdDer = new CkBinData();
cert.ExportCertDerBd(bdDer);

// Get the base64 representation of the SHA256 hash.
var certHash = bdDer.GetHash("sha256","base64");

console.log("Certificate hash in base64 = " + certHash);