How to set basic authorization from environment variable in postman? - postman

Question

I want to set basic Authorization in Postman using environment variable. Because I have different authorization username and password for the different API calls.
I set my postman according to below:
In Authorization Tab: I've selected No Auth
In Header Tab: Key=Authorization Value= Basic{{MyAuthorization}}
In Body Tab:
{
"UserName": "{{UserName}}",
"ServiceUrl": "{{ServiceUrl}}"
}
//which set it from the envitonment variable
In Pre-request Tab:
// Require the crypto-js module
var CryptoJS = require("crypto-js");
// Parse the `username` and `password` environment variables
let credsParsed = CryptoJS.enc.Utf8.parse(`${pm.environment.get('admin')}:${pm.environment.get('admin')}`);
// Base64 encoded the parsed value
let credsEncoded = CryptoJS.enc.Base64.stringify(credsParsed);
// Set the valuse as an environment variable and use in the request
pm.environment.set('MyAuthorization', credsEncoded);
console.log(credsEncoded);
In Test Tab:
var jsonData = JSON.parse(responseBody);
postman.setEnvironmentVariable("LoginInfoID", jsonData.First.LoginInfoID);
Then I've sent the request and got unauthorized.
After that, I've set auth type to basic auth with username and password
it's working fine and I got what I wanted from the response.

Answer 1

Another way which worked for me:
Set up environment variables for 'username' and 'password', and save
In the Authorization tab of the request, select Basic Auth
In the Username field, enter {{username}}
For the Password field, click "Show Password", and enter {{password}}
Hope this helps others :)

Answer 2

You could use cryptp-js in a Pre-request Script with a very crude solution like this:
// Require the crypto-js module
var CryptoJS = require("crypto-js");
// Parse the `username` and `password` environment variables
let credsParsed = CryptoJS.enc.Utf8.parse(`${pm.environment.get('username')}:${pm.environment.get('password')}`);
// Base64 encoded the parsed value
let credsEncoded = CryptoJS.enc.Base64.stringify(credsParsed);
// Set the valuse as an environment variable and use in the request
pm.environment.set('authCreds', credsEncoded);
You could add your credentials to a set of different environment files, under the key username and password.
In the request, just set the Header like this:
You can also set those at the Collection / Sub-folder level so you're not repeating yourself in each request.
It's one way you could achieve this but there will be other ways too.