Brought into line with JWT protocol

Resolved #2

server/utilities/token-auth.js

@@ -0,0 +1,21 @@
+const jwt = require('jsonwebtoken');
+
+//middleware to authenticate the JWT token
+module.exports = (req, res, next) => {
+	const authHeader = req.headers['authorization'];
+	const token = authHeader?.split (' ')[1]; //'Bearer token'
+
+	if (!token) {
+		return res.status(401).end();
+	}
+
+	jwt.verify(token, process.env.SECRET_ACCESS, (err, user) => {
+		if (err) {
+			return res.status(403).end();
+		}
+
+		req.user = user;
+
+		next();
+	});
+};