Upload files directly to AWS S3 storage using browser rather via asp.net app

Question

We need to work on asp.net application which will allow upload/download of files to AWS S3 storage bucket.

All contents stored in bucket are non-public.

We figured files can be downloaded directly from AWS S3 storage using pre-signed urls .

We are also trying to figure out a way by which we can upload files also directly to AWS S3 storage bucket.

After looking for sometime we found below article but this article is quite old and i am not able to figure out how actually it works or its latest version.

Is there a better way of uploading files directly from client browser.

Pointer to asp.net code snipped or article would be nice start

Answer 1

You could authenticate your users with cognito , either with a login provider or with your own identities .

Then, your client browser can use GetCredentialsForIdentity to retrieve temporary AWS credentials associated with a role that you configure to have permissions to write in S3 .

Use the AWS javascript SDK to communicate with the S3 API.