Skip to content

Instantly share code, notes, and snippets.

Last active Nov 16, 2021
What would you like to do?
Veracode custom HMAC request signing algorithm (used for API authorization)
var crypto = require('crypto');
const id = process.env.API_ID; // your API ID, reading from environment variable
const key = process.env.KEY; // your API key, reading from environment variable
const preFix = "VERACODE-HMAC-SHA-256";
const verStr = "vcode_request_version_1";
var resthost = ""; // rest host
var xmlhost = ""; // xml host
var hmac256 = (data, key, format) => {
var hash = crypto.createHmac('sha256', key).update(data);
// no format = Buffer / byte array
return hash.digest(format);
var getByteArray = (hex) => {
var bytes = [];
for(var i = 0; i < hex.length-1; i+=2){
bytes.push(parseInt(hex.substr(i, 2), 16));
// signed 8-bit integer array (byte array)
return Int8Array.from(bytes);
var getHost = (xml) => {
if (xml) {
return xmlhost;
return resthost;
var generateHeader = (url, method, xml) => {
var host = getHost(xml);
var data = `id=${id}&host=${host}&url=${url}&method=${method}`;
var timestamp = (new Date().getTime()).toString();
var nonce = crypto.randomBytes(16).toString("hex");
// calculate signature
var hashedNonce = hmac256(getByteArray(nonce), getByteArray(key));
var hashedTimestamp = hmac256(timestamp, hashedNonce);
var hashedVerStr = hmac256(verStr, hashedTimestamp);
var signature = hmac256(data, hashedVerStr, 'hex');
return `${preFix} id=${id},ts=${timestamp},nonce=${nonce},sig=${signature}`;
module.exports = {
Copy link

mrpinghe commented Dec 18, 2020

This still works as of yesterday.
A few things to check

  1. Is your ID and API key still valid?
  2. Did you generate a token for every request?
  3. Is your account authorized to call the API endpoint you are trying to access ?

If you are sure none of them is the issue, you probably need to post your code for me to help you

Copy link

pillamarip commented Dec 18, 2020

Thank you for reaching back. It worked as is. Thank you!

Copy link

mrpinghe commented Dec 18, 2020

Ah glad to see it worked out!

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment