Amazon has clients sign the request: http://docs.amazonwebservices.com/AmazonS3/2006-03-01/RESTAuthentication.html http://docs.amazonwebservices.com/AmazonS3/20

Amazon has clients sign the request: http://docs.amazonwebservices.com/AmazonS3/2006-03-01/RESTAuthentication.html http://docs.amazonwebservices.com/AmazonS3/2006-03-01/RESTAu...