Add a hash to my webhook

[Ric_Kolibar]

How do I add a hash to my webhook from Marketo to Salesforce. 

Salesforce admins are asking for one.

[SanfordWhiteman]

A hash... of what data? Not enough to work with here!

[Ric_Kolibar]

Can Marketo use HMAC to hash/authenticate webhooks like in this article: https://hookdeck.com/webhooks/guides/how-to-implement-sha256-webhook-signature-verification#choosing...

[SanfordWhiteman · Accepted solution]

Generally: No.

Given certain requirements: Maybe.

If you want to use a webhook-powered service that requires a hash for authentication, but your company’s internal security rules didn't specifically require the hash, then you could generate the hash using another webhook.

Naturally, the 1st webhook — which generates the hash — would be authenticated via preshared key. Then include the hash in the 2nd webhook's headers. You can use Data Value Changes on the hash field to trigger the 2nd webhook.