Content Hash Generating


Good morning everyone!

I am seeking information on how to generate a content hash using HMAC SHA256. I am building my site on and would like to add the Whisqr loyalty program api to my code but am unable to do so pending this content hash. I am unsure of how to generate this code and have seen online generators which request “plain text” and a “secret key” but I am unsure of what “plain text” is being requested from my api and the same goes for the “secret key”.

Any and all feedback is greatly appreciated!