SignatureDoesNotMatch error while amazon web service SES through HTTP.

I am stuck at SignatureDoesNotMatch error while using aws ses. I am creating signature key by using GMT DATE and security key with HMAC SHA256 and then converting it to Base64.

Url: http://ift.tt/1DdsbSR

And input headers as x-amz-date: Thu, 30 Jul 2015 18:15:51 +0000 X-Amzn-Authorization: AWS3-HTTPS AWSAccessKeyId=,Algorithm=HmacSHA256,Signature=