adrianmacneil/omnipay — pull request #134 by amsross (2013-09-25 13:24:54+00:00)
Title: Fixed missing MD5 key for Authorize.net

Allows for matching MD5 hash if Authorize.net Merchant Interface setting is set.

Mentioned here: http://support.authorize.net/authkb/index?page=content&id=A588&actp=LIST_POPULAR