User Guide (P400)

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Version: Date:

1.0.0 Feb 2026

Reference documents

Key import

Introduction

The Verifone Key Loading Device (VKLD) is a device used for loading security-sensitive keys to a Key Receiving Device (KRD) such as Trinity and Neo payment Terminals.

The Verifone KLD is an Engage P400 (or P400 Plus) device running the KLD application software.

This document describes how to setup and use a Verifone KLD.

We highly recommend reading Key Concepts before continuing.

Supported Key Types

Key Type	Supported
DUKPT BDK Keys	2TDEA
Master Session Keys	2TDEA, 3TDEA, AES-128, AES-192, AES-256
Fixed Keys	2TDEA, 3TDEA, AES-128, AES-192, AES-256
DUKPT Initial Keys	2TDEA

Supported Target Terminal Platforms

Currently this Verifone KLD product supports target terminals that fall under 3 specific platforms, namely:

• Trinity (Android)
• Neo
• Victa

Copyright