Regarding the sha512 transaction hashing and verification, is this designed for or does it work at all for Accept Hosted? I never seen much use for it, and I am noticing that everyone that is posting about this uses SIM/DPM/AIM. I use manual API refund calls on my backend, and that's about it for transactions that return a sha512 hash in the API call response.
It seems like a simple process, but after generating a byte signature key and testing it in every way under the sun I cannot get my hashed value to match.
