node-red-contrib-tuya-file-decrypt 1.0.5

Node-RED contribution to decrypt Tuya Files

npm install node-red-contrib-tuya-file-decrypt

node-red-contrib-tuya-file-decrypt

A Node‑RED node that decrypts Tuya encrypted files (AES‑CBC) and returns the resulting image as Base64 or binary Buffer.

This is especially useful for Tuya‑based cameras and sensors that stores encrypted snapshots or movement configuration files.

Besides the Tuya credentials, it is paramount to enable the Beta API on your Tuya IOT Platform (Cloud -> [Your Project] -> Service API and activate "Beta API")

Based on 'How To Parse IPC movement_detect_pic Data' Tuya Support Help (https://support.tuya.com/en/help/_detail/Kbfus79b0gcpi)

✨ Features

• Downloads encrypted files
• Decrypts AES‑CBC with PKCS7 padding
• Returns the image in:
  • msg.payload → Base64
  • msg.image → Buffer (binary)
• Fully compatible with:
  • Node‑RED standalone
  • Node‑RED add‑on for Home Assistant
  • Docker deployments
• Zero Python dependencies — pure Node.js

📦 Installation

From Node‑RED Palette Manager

Menu → Manage Palette → Install → node-red-contrib-tuya-file-decrypt

From NPM

npm install node-red-contrib-tuya-file-decrypt

Home Assistant (Node‑RED Add‑on)

cd /config/node-red

npm install node-red-contrib-tuya-file-decrypt

Then restart the add‑on.

🧩 Node Configuration

The node requires your Tuya Cloud credentials:

📥 Input Format

The node expects a Base64 string containing a JSON object with Tuya metadata:

{
  "bucket": "example-bucket",
  "files": [
    ["path/to/file", "AESencryptionKey"]
  ]
}