HomeHome AutomationServing credentials with NodeRED

Serving credentials with NodeRED

Storing security credentials on your own server

This is a follow-up article to the Tasker credentials article. I mentioned, that If you run a NodeRED server, you can pass an authenticated web request to obtain these credentials from your own server, without sharing the file with Google Docs. The Tasker part of the process remains the same, so please check that tutorial out, as here I’m going to cover the NodeRED endpoint.

I have edited the tutorial on 25 Sept 2019 to add encryption, as no one likes the passwords stored in the text files.

NodeRED Credentials

It’s unwise to store any secure credentials as plain text, so I’m going to use encryption to save the credentials in the encrypted form. There is a very simple node to use – search palette manager for node-red-contrib-crypto-js.

I’m going to work again with HTTP requests and JSON files so if you need a bit of background knowledge, I have the JSON basics for you here.

Saving Credentials

First, I have to create the credentials using a template node, keep a copy of this JSON formatted string elsewhere, you will find it useful if you want to add more information.

 {
"NodeRED_IP": "192.168.1.183:1880",
"DNS": "DNS1.ddns.net",
"MQTT_user": "MQTTuser",
"MQTT_pass": "MQTTpass",
"HTTP_user": "HTTPuser",
"HTTP_pass": "HTTPpass"
}

This msg.payload is then encrypted with the encrypt node and saved to file. Select the encryption of your choice and remember the passphrase, you will need it to decrypt the information.

Getting Credentials

To get the desired information, you need to pass an authorised (username, password) HTTP request. Once the authenticated, the file will be read with a node, decrypted (use the same encryption and password) and formatted to a JSON object.

Please note, this is not the best solution if your credentials contain the server’s IP. If your NodeRED DNS or IP changes, you will have to update the script pulling the JSON file manually. You can bypass this by serving the updated JSON file first, then changing the IP of the server.

Lastly, delete the flow used to create the credentials. You don’t want this to be easily accessible in your ./node-red folder.

Conclusion

Storing your credentials this way introduces a new level of safety as only authenticated HTTP requests will get a valid response. If you want to learn more about securing your NodeRED installation – check this article out. If you have any questions or comments feel free to leave it in this Reddit thread.

Project Download

Download project files here. Bear in mind that Patreon supporters have early access to project files and videos.

PayPal

Nothing says "Thank you" better than keeping my coffee jar topped up!

Patreon

Support me on Patreon and get an early access to tutorial files and videos.

image/svg+xml

Bitcoin (BTC)

Use this QR to keep me caffeinated with BTC: 1FwFqqh71mUTENcRe9q4s9AWFgoc8BA9ZU

Smart Ideas with

Automate your space in with these ecosystems and integrate it with other automation services

client-image
client-image
client-image
client-image
client-image
client-image
client-image
client-image
client-image

Learn NodeRED

NodeRED for beginners: 1. Why do you need a NodeRED server?

0
To server or not to server? That's a very silly question!

Best Automation Projects

NEST your old thermostat under $5

0
Nest-ing up your older thermostat under $5

Nora – Google Assistant in NodeRED

0
Integrate Google Assistant with NodeRED thanks to Nora - NodeRED home automation

Sonoff R3 DIY mode & why it sucks

0
Long awaited Sonoff R3 DIY mode is even worse than I expected.

IKEA TRADFRI Wireless dimmer in NodeRED

0
Thanks to NodeRED you can use IKEA TRADFRI Wireless Dimmer to interact with everything

Things they don’t tell you about IKEA Trådfri

0
There are things you should know about IKEA Tradfri before you make your purchase

Smart Home

Electrolama in my network – flashing CC2652R

0
Flashing CC2652R Zigbee Coordinator to enable ZigBee2MQTT for your home automation

How to wake on LAN computers and put it to sleep with Power Menu, Alexa and Google Assistant

0
How to Wake on LAN properly via Android, Alexa, Google Assistant and Web

Power Menu – All sensors

0
Taking all the sensor data and adding it to a single Power Menu tile!

Smarting up Comfee Miniplus Dishwasher

0
Can a vibration sensor turn Comfee TD305-W dishwasher into a smart appliance? Let's see

M5Stack UnitV2 – Edge computing and vision projects with a mini dev board

0
M5Stack UnitV2 is upon us - everything you should know about the latest dev board for Edge computing and vision projects.