varnish & amazon S3 private buckets

[Marc Fournier]

Hello,

Did anyone already try to use amazon's S3 service as a backend and serve
content from private buckets ?

Basically this means having a calculated hash added to the headers
which get sent to the backend server [1].

A guy recently implemented this for nginx's proxy module[2], so I
wondered if it would make sense to have this sort of facility in
varnish too ?

Or maybe is it more the sort of thing which would belong to a C{...}C
block in VCL ?

Marc

[1] http://docs.amazonwebservices.com/AmazonS3/latest/API/RESTServiceGET.html
[2] http://nginx.org/pipermail/nginx/2010-February/018583.html