Interaction of Cloudflare worker and RDS backend

[RitikJaiswal75]

Sending and receiving data between Cloudflare worker and RDS backend.

Here we are looking for a way to send and receive data between the RDS backend and Cloudflare worker. We need the means to verify the calls are coming only from the specified Cloudflare worker.
The method we chose was using RSA Private and Public keys and generating a JWT for the requests.

[rohan09-raj]

Design Frontend

https://www.figma.com/file/5Tk9bgA7DXchDtCdrrPSwD/Main-Site?type=design&node-id=644-14&mode=design&t=OkhGdZVK2YRBDCsI-0

Implementation

Implemented the working code for the successful interaction between Real Dev Squad Backend and Cloudflare Worker

JWT Interaction Details

Cloudflare Workers

• Package Used -> https://www.npmjs.com/package/@tsndr/cloudflare-worker-jwt
• Method -> sign
• Payload -> {name: "Cloudflare Worker"}
• Key Type -> Private Key (as it is generated)
• Algorithm -> RS256
• Expiry -> 2 seconds
• Code Sample ->

const name = { name: "Cloudflare Worker" };
const jwtToken = await jwt.sign(
      { 
        name: "Cloudflare Worker", 
        exp: Math.floor(Date.now() / 1000) + 2 
      }, 
      env.PRIVATE_KEY, 
      { 
        algorithm: 'RS256' 
      }
);

Backend

• Package Used -> https://www.npmjs.com/package/jsonwebtoken
• Method -> verify
• Key Type -> Public Key (Append string with \n and +)
• Algorithm -> RS256
• Code Sample ->

const headers = req.headers.authorization.split(" ");
const token = headers[1];
const data = jwt.verify(token, config.get("botToken.publicKey"), { algorithms: ["RS256"] });