GET
/

host:example.amazonaws.com
x-amz-date:20150830T123600Z
x-amz-region-set:us-east-1
x-amz-security-token:6e86291e8372ff2a2260956d9b8aae1d763fbf315fa00fa31553b73ebf194267

host;x-amz-date;x-amz-region-set;x-amz-security-token
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855