title: AWS S3 REST calls - creating signature
body: <p>I have 'AWS Account ID (say xxx)' and 'Access Key ID (say yyy)' with me. I am trying to issue simple REST GET call (via the POSTMAN chrome app) to list the objects in my bucket (GET BucketName.s3.amazonaws.com).
  It is elementary but I am not able to find a simple way to create the signature based on this information. The s3-dg.pdf document talks of creating the signature in concept but no script/code listed that will get me there.
  Can anyone help with getting from here to to the signature.</p>