Signature Сalculation for HPP

If you are having trouble calculating the signature for Maxpay HPP please try to follow these steps:

1. Go to Mportal - HPP settings - Signature calculation
2. Add all desired custom parameters
   For redirect payment form - name and value everything between ‘…’
   For iframe and popup payment form - name after data and the parameter between ‘…’
3. After adding all parameters click 'calculate'
4.  Change test keys to live keys and remove signature in the 'signature logic', make sure custom fields are in the alphabetic order.
5. Convert 'signature logic' to lowercase if nessesary
6. Finally, convert to SHA256 format. You can use this or any other convector.

The signature is calculated. Please contact support@maxpay.com if you have any questions.