node-apn/lib/credentials/certificate/APNKey.js

An interface to the Apple Push Notification service for Node.js

"use strict";

var forge = require("node-forge");

function APNKey(key) {
  if(!key || !key.n || !key.e) {
    throw new Error("key is not a valid public key");
  }

  this._key = key;
}

APNKey.prototype.fingerprint = function() {
  return forge.pki.getPublicKeyFingerprint(this._key, {encoding: "hex"});
};

module.exports = APNKey;