GET /?Param2=value2&Param1=value1 HTTP/1.1 Host:example.amazonaws.com X-Amz-Date:20150830T123600Z Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=host;x-amz-date, Signature=b97d918cfa904a5beff61c982a1b6f458b799221646efd99d3219ec94cdf2500