I need to generate some HMACs server side in my application written in node.js. Node does provide HMAC functionality in its crypto class:
http://nodejs.org/api/crypto.html#crypto_class_hmac
However, keyczar has a few more features on top of this, particularly key rotation and management. Has anyone found a way to use keyczar from node.js, or perhaps implemented a key rollover strategy on top of node.js crypto?