Login ID/Transaction ID to Transaction ID/Signature Key

[mvpetrovich]

I have been using:
  <merchantAuthentication>
    <name>LOGIN_ID</name>
    <transactionKey>TRANSACTION_KEY</transactionKey>
  </merchantAuthentication>

Transactions are processed using :  https://api.authorize.net/xml/v1/request.api

So, now the client has given me a Transaction Key and a Signature Key, and I cannot figure out how to use them with the XML interface.  I have not been able to find any examples.

I do know that I have to convert the Signature Key to Binary, which isn't valid XML.

Can someone send me the links of what I need to understand?

Thanks.

[brianmc]

You only need to plug in transaction key, plus api_login_id, which are both available from the API credentials section in the merchant portal.  You should not need signature key for API calls. 

Hope this helps,

Brian