Thanks for the reply and the code.

I am confused as to which digest I should be using and also what I should be outputting.

the requirement is to create a HMAC sha256 digest using an appkey as the secret

the app key is a hex value comprised of 32 2 byte values and not 64 1 byte values

its how to handle that in perl that is causing me the issue as well as which digest to use. I have been using hmac_sha256 as an assumption

thanks again