vads_threeds_cavvAlgorithm

Description

Algorithm used by the ACS to generate the CAVV value.

Its value is populated by 3DS authentication server (ACS) when the buyer has been correctly authenticated (vads_threeds_status equals "Y" or "A").

Output field, returned in the response (IPN and Return URL).
Format n1

Possible values
Value Description
0 HMAC
1 CVV
2 CVV_ATN
3 MasterCard SPA
Category Authentication of cardholder.