(Node.js) Renew a DigiCert Certificate from an EST-enabled profile

Demonstrates how to renew a certificate from an EST-enabled profile in DigiCert​​®​​ Trust Lifecycle Manager. (The certificate must be within the renewal window configured in the certificate profile. The CSR must have same Subject DN values as the original certificate.)

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    // The example below duplicates the following OpenSSL commands:
    // 
    // # Name of certificate as argument 1
    // 
    // # Make new key
    // openssl ecparam -name prime256v1 -genkey -noout -out ${1}.key.pem
    // 
    // # Make csr
    // openssl req -new -sha256 -key ${1}.key.pem -out ${1}.p10.csr -subj "/CN=${1}"
    // 
    // # Request new cert
    // curl -v --cacert data/ca.pem --cert data/${1}.pem --key data/${1}.key.pem 
    //     --data-binary @${1}.p10.csr -o ${1}.p7.b64 -H "Content-Type: application/pkcs10" https://clientauth.demo.one.digicert.com/.well-known/est/IOT/simplereenroll
    // 
    // # Convert to PEM
    // openssl base64 -d -in ${1}.p7.b64 | openssl pkcs7 -inform DER -outform PEM -print_certs -out ${1}.pem

    // ------------------------------------------------------------------------------------------------------------------

    // Create a Fortuna PRNG and seed it with system entropy.
    // This will be our source of random data for generating the ECC private key.
    var fortuna = new chilkat.Prng();
    var entropy = fortuna.GetEntropy(32,"base64");
    var success = fortuna.AddEntropy(entropy,"base64");

    var ec = new chilkat.Ecc();

    // Generate a random EC private key on the prime256v1 curve.
    // privKey: PrivateKey
    var privKey = ec.GenEccKey("prime256v1",fortuna);
    if (ec.LastMethodSuccess !== true) {
        console.log(ec.LastErrorText);
        return;
    }

    // Create the CSR object and set properties.
    var csr = new chilkat.Csr();

    // Specify your CN
    csr.CommonName = "mysubdomain.mydomain.com";

    // Create the CSR using the private key.
    var bdCsr = new chilkat.BinData();
    success = csr.GenCsrBd(privKey,bdCsr);
    if (success == false) {
        console.log(csr.LastErrorText);

        return;
    }

    // Save the private key and CSR to files.
    privKey.SavePkcs8EncryptedPemFile("password","c:/temp/qa_output/ec_privkey.pem");

    bdCsr.WriteFile("c:/temp/qa_output/csr.pem");

    // ----------------------------------------------------------------------
    // Now do the CURL request to POST the CSR and get the new certificate.

    var http = new chilkat.Http();

    var tlsClientCert = new chilkat.Cert();
    success = tlsClientCert.LoadFromFile("data/myTlsClientCert.pem");
    if (success == false) {
        console.log(tlsClientCert.LastErrorText);
        return;
    }

    var bdTlsClientCertPrivKey = new chilkat.BinData();
    success = bdTlsClientCertPrivKey.LoadFile("data/myTlsClientCert.key.pem");
    if (success == false) {
        console.log("Failed to load data/myTlsClientCert.key.pem");
        return;
    }

    var tlsClientCertPrivKey = new chilkat.PrivateKey();
    success = tlsClientCertPrivKey.LoadAnyFormat(bdTlsClientCertPrivKey,"");
    if (success == false) {
        console.log(tlsClientCertPrivKey.LastErrorText);
        return;
    }

    success = tlsClientCert.SetPrivateKey(tlsClientCertPrivKey);
    if (success == false) {
        console.log(tlsClientCert.LastErrorText);
        return;
    }

    http.SetSslClientCert(tlsClientCert);

    http.RequireSslCertVerify = true;

    // The body of the HTTP request contains the binary CSR.
    // resp: HttpResponse
    var resp = http.PBinaryBd("POST","https://clientauth.demo.one.digicert.com/.well-known/est/IOT/simplereenroll",bdCsr,"application/pkcs10",false,false);
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

    if (resp.StatusCode !== 200) {
        console.log("response status code = " + resp.StatusCode);
        console.log(resp.BodyStr);
        console.log("Failed");

        return;
    }

    // The response is the Base64 DER of the new certificate.
    var myNewCert = new chilkat.Cert();
    success = myNewCert.LoadFromBase64(resp.BodyStr);
    if (success == false) {
        console.log(myNewCert.LastErrorText);
        console.log("Cert data = " + resp.BodyStr);
        console.log("Failed.");

        return;
    }

    success = myNewCert.SaveToFile("c:/temp/qa_output/myNewCert.cer");
    if (success == false) {
        console.log(myNewCert.LastErrorText);
        console.log("Failed.");
        return;
    }

    console.log("Success.");

}

chilkatExample();