Problem: How can I access the public_key in Vault to be used by Boundary

So the public_key on the host is added into Vault and the Boundary Credential Store has the access to it.

Whenever I try to connect to it via:
boundary connect ssh --username user -target-id ttcp_MUuzNRLGn5 -host-id hst_f3oZD0hQPl

I get Secret: null and of course it will timeout.

I was wondering how the procedure is done? Where I am wrong?

Thank you in-advance

Where is it in Vault? KV? If so the upcoming 0.7.5 will support both KVv1 and KVv2 from Vault. @louisruch might have more insight here.