I liked the idea of server side encryption with my keys, so I tried

#!/bin/sh -ex # # key=$(echo -n "key" | base64) key_md5=$(echo -n "key" | md5sum | cut -b 1-32 | base64) s3cmd \ --add-header=x-amz-server-side-encryption-customer-algorithm:AES256 \ --add-header=x-amz-server-side-encryptiony:"$key" \ --add-header=x-amz-server-side-encryption-customer-key-MD5:"$key_md5" \ $@

but I keep getting

ERROR: S3 error: 403 (SignatureDoesNotMatch): The request signature we calculated does not match the signature you provided. Check your key and signing method.

Any ideas?

Example data values:

base64 of "key": a2V5
base64 of md5 of "key": M2M2ZTBiOGE5YzE1MjI0YTgyMjhiOWE5OGNhMTUzMWQK