I would like to implement HMAC. Our store is in development (FoxyCart v2). I have built a test page: http://www.keepbooks.org/testonly.html
and it all seems to work fine without HMAC.
I don't understand the HMAC documentation. I'm a novice when it comes to PHP etc.
I am trying Manual Signing via FoxyCart Administration because it seems simplest for my level of understanding.
I put my form code info into the box on the Sample Code page (https://admin.foxycart.com/admin.php?ThisAction=SampleCode
) and it generates output.
1) It's not clear to me what I would put in the <! link example--> section.
2) And it's not clear to me where I put the output once it's generated.