HMAC Signature Calculation

This code snipping will calculate an HMAC signature for you. Use it to troubleshoot other HMAC calculations.

Steps

Use Ngrok (localhost:4040) to:

1. Grab the JSON object from the Summary tab.
2. From the Headers tab
   1. Grab the X-Authy-Signature
   2. Grab the X-Authy-Signature-Nonce
3. Edit the hmac.js variables
4. Run node hmac.js
5. Output will tell you if sigs match or not.

OneTouch Headers

Get the JSON object from here.

OneTouch Summary

Get the nonce and signature from here.