post https://api-sandbox.pismolabs.io/3ds-acs/3ds-acs/v1/preauthenticate
Send pre-authentication information to the client's anti-fraud validator to evaluate. Pismo calls the vaidator's webhook and gets a response before sending a response to the caller.
Pismo provides the encrypt/decrypt keys for the hashed PAN. Talk to your Pismo representative about getting these keys.