Secure Web Pay - Checkout Hashing

The following example will demonstrate what is needed to perform the correct computation of the algorithm:

<FORMMETHOD="post" ACTION="https://sandbox.paymentsgateway.net/swp/co/default.aspx">
<input name="pg_billto_postal_name_first" type="text" value="Bob"/>
<input name="pg_billto_postal_name_last" type="text" value="Smith"/>
<input type="hidden" name="pg_api_login_id" value="APILOGINID"/>
<input type="hidden" name="pg_transaction_type" value="10"/>
<input type="hidden" name="pg_version_number" value="1.0"/>
<input type="hidden" name="pg_total_amount" value="5.00"/>
<input type="hidden" name="pg_utc_time" value="634094514514687490"/>
<input type="hidden" name="pg_transaction_order_number" value="100055"/>
<input type="hidden" name="pg_ts_hash" value="4bac0b9badbea7730cd41c334384bdfa"/>
<input TYPE=SUBMIT>
</FORM>

Note: 'pg_ts_hash' was computed like this:

pg_ts_hash=HMAC-MD5("APILOGINID|10|1.0|5.00|634094514514687490|100055", "SECURETRANSACTIONKEY") 

Have you generated your API Login ID and Secure Transaction Key? If not, you’ll need to log into our gateway under “Gateway Settings”>Gateway Key and generate both items; https://sandbox.paymentsgateway.net/vt3/login.aspx.