The invention provides systems, methods and devices for performing passcode authentication. In one embodiment of the invention, a method of performing passcode authentication conducted at a mobile device is provided which comprises the steps of: receiving an authentication request from a security gateway; receiving a passcode entered by a user of the mobile device; comparing the entered passcode to a passcode offset securely stored in a hardware security module (HSM) coupled to the mobile device; and, if the entered passcode corresponds with the passcode offset, generating a secure authentication confirmation message and transmitting the confirmation message to the security gateway; or, if the entered passcode does not correspond with the passcode offset, generating a secure authentication denial message and transmitting the authentication denial message to the security gateway.