(JavaScript) IKOF Generation Code for Montenegro Fiscalization Service

Demonstrates computing the IKOF MD5 summary value as described in section 4.3 of this document: https://poreskauprava.gov.me/ResourceManager/FileDownload.aspx?rId=416042&rType=2

Note: This example requires Chilkat v11.0.0 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 concatenatedParams = "12345678|2019-06-12T17:05:43+02:00|9952|bb123bb1231|cc123cc1231|ss123ss123|199.01";

// Get the private key from a pfx file.
var pfx = new CkPfx();
success = pfx.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
if (success == false) {
    console.log(pfx.LastErrorText);
    return;
}

var privKey = new CkPrivateKey();
success = pfx.PrivateKeyAt(0,privKey);
if (success == false) {
    console.log(pfx.LastErrorText);
    return;
}

// Create IIC signature according to RSASSA-PKCS-v1_5 using SHA256
var rsa = new CkRsa();
success = rsa.UsePrivateKey(privKey);
if (success == false) {
    console.log(rsa.LastErrorText);
    return;
}

// PKCS-v1_5 is used by default.
rsa.EncodingMode = "hex";
rsa.Charset = "utf-8";
var hexSig = rsa.SignStringENC(concatenatedParams,"sha256");

console.log("Signature value result is: " + hexSig);

// Compute the MD5 hash of the bytes.
var crypt = new CkCrypt2();
crypt.EncodingMode = "hex";
crypt.HashAlgorithm = "md5";
var bd = new CkBinData();
bd.AppendEncoded(hexSig,"hex");
var md5_summary = crypt.HashBdENC(bd);

console.log("MD5 summary value is: " + md5_summary);