Support signing with another device

server/router/xpub-auth/index.js

@@ -0,0 +1,50 @@
+/**
+ * This router handles things related to the web browser experience...
+ */
+// This is the mock data we working with...
+
+module.exports = function (options) {
+    const config = require('config');
+    var QRCode = require('qrcode');
+    var express = options.express;
+    
+    const db = options.db;
+    const hdAuthUtil = options.hdAuthUtil;
+
+    var router = express.Router();
+
+    router.route('/sign')
+        .post(function(request, response, next) {
+            // Verify challenge
+            db.Challenge.findByPk(request.body.id,
+                {
+                    where: {
+                        response: null
+                    }
+                }).then(challenge => {
+                if (challenge) {
+                    challenge.response = {
+                        signature: request.body.signature
+                    };
+                    if(hdAuthUtil.verifyHDAuthChallengeResponse(challenge)) {
+                        challenge.save().then(() => {
+                            response.json({
+                                "message": "challenge response accepted"
+                            })
+                        });
+                    } else {
+                        response.status(401);
+                        // user failed challenge
+                        // TODO: Validate input
+                        // TODO: Createa new challenge
+                        console.error("User failed to authenticate");
+                        // Create new challenge and try again...
+                    }
+                } else {
+                    response.status(500);
+                }
+                });
+        })
+    // TODO: add other endpoints
+    return router;
+};