Our next point of concern is the Decryption Handler, we destructure the request body (req.body) and pull out the “encrypted” and “IV” keys from it. We’ll be using the built-in Node.js crypto module for decryption, and express for handling the HTTP request(s). Our Node.js backend has been set up on CodeSandbox. Now we’re ready to send encrypted data from Postman but we don’t have a backend to receive it. The same is done for the local variable “IV”. encrypt(val, Key, ) *and then setting it to the JSON key named “encrypted” (the JSON key can be named whatever you wish). finds the SHA-256 hash for the keyString var Key = CryptoJS. Generate random 16 bytes to use as IV var IV = CryptoJS. Now let’s see how to encrypt data using the crypto-js AES specification in the code below: var CryptoJS = require( 'crypto-js') One of those packages is crypto-js which we’ll be using to encrypt data on the Pre-request Script. **As the name implies, it’s a script that runs just before a request is sent.Īlso, Postman is pre-installed with some popular JavaScript packages and these packages can be utilized in the Pre-request Script for manipulating data. So, I began another round of research and stumbled upon a tab on Postman called **Pre-request Script. The result - more efficient and less tedious work.Įven though I had experience with Postman, I didn’t know how to encrypt data before making a request yet. This is done by allowing users to create and save simple and complex HTTP/s requests, as well as read their responses. And the fastest way to test an API without creating a frontend is with Postman.Īccording to BlazeMeter, Postman is a popular API client that makes it easy for developers to create, share, test and document APIs. Once I discovered what I was looking for, I had to test my findings.

Since I hadn’t done such a thing before, I had to do some research to see how this was done. The backend was written with Java, so I thought about how to accomplish this with Node.js.

On the backend, the ciphertext is then decrypted back to plaintext. Recently, I started interacting with a project’s backend that accepts only encrypted dat - that is, plaintext is converted to ciphertext before it is sent to the backend.

Prerequisite: Knowledge of JavaScript, Node.js, and basic knowledge of Postman LinkedIn logo for sharing a link Twitter logo for sharing a link Reddit logo for sharing a link

Python decrypt RSA buffer