Create a Shared Secret Key Pair

You must create a shared secret key pair to use HTTP signature message security. How you create your shared secret key pair is determined by your

National Australia Bank

account type.

Transacting merchant account users can create their own unique shared secret key. Portfolio and merchant account users must create a

meta key

of a shared secret key. Meta keys enable an organization administrator to create a single shared secret key. That key is assigned to some or all transacting merchants in their organization. The purpose of a meta key is to reduce the time needed to manage an organization's keys. For example, by assigning the same meta key to all of your transacting merchants, you need to update only one key when it expires instead of having to update each transacting merchant's key when it expires.

For more information about meta keys, see the Meta Key Creation and Management section in the

Creating and Using Security Keys User Guide

.