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 the

Cybersource

account type that you are using.

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

meta key

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

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

Creating and Using Security Keys User Guide

.