"longer actively maintained or enhanced" If this is a new setup, go with
the other APIhttp://developer.authorize.net/api/reference/
http://developer.authorize.net/api/upgrade_guide/The items on this page
represent API Implementations that are supported but no longer actively
maintained or enhanced. For newer alternatives, please see below.
is like transHash but using Sha2transHashPayment gateway-generated MD5
hash value that can be used to authenticate the transaction
response.Because transaction responses are...