Create AWS Signature with Postman

For almost any AWS service call, you will need to provide an HTTP Authorization header containing an AWS Signature. Postman has an authorization helper that works with the AWS Signature V4.

Pre-requisites

I will assume that you have an Amazon AWS account and that you are at least a bit familiar with the Amazon Console web interface.

I this example I will show you how to configure the permissions for the Simple Queue Service (AWS SQS). I already assume that you already have created an SQS queue or that the service that you want to use is already running.

Creating a new user

If you already have a user (a Principal), you can skip this, but I wanted to show the process from the beginning to the end.

Go to the Identity and Access Management (IAM) section from your AWS Management Console.

Next, go ahead and create a new user.