Downloading file from secured s3 over https

The following shell script can be used to download a file from secured Amazon s3 bucket over https.

#!/bin/sh

file=path/to/file/in/the/bucket

bucket=bucket-name

s3Key=XXXXXXXXXXXXXXXXXX

s3Secret=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

###

resource="/${bucket}/${file}"

dateValue="`date +'%a, %d %b %Y %H:%M:%S %z'`"

stringToSign="GET\n\n\n\nx-amz-date:${dateValue}\n${resource}"

signature=`/bin/echo -en "$stringToSign" | openssl sha1 -hmac ${s3Secret} -binary | base64`

wget --header="Host: ${bucket}.s3.amazonaws.com" \

--header="x-amz-date: ${dateValue}" \

--header="Authorization: AWS ${s3Key}:${signature}" \

https://${bucket}.s3.amazonaws.com/${file}

Resources:

http://stackoverflow.com/questions/27658147/download-private-file-from-s3-using-bash

https://s3.amazonaws.com/doc/s3-developer-guide/RESTAuthentication.html