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" make sure to check the signature returned from Gateway to ensure that the payment response is coming from the payment page and not from a hacker who is trying to modify the payment response; and display a “security violation was detected!” message if the signatures mismatching occurred. "

this message from external gateway but my question how i can check this signature ? i use hash('sha256',..); in php

  • Which payment gateway you are using. Are you trying to built a new custom payment method. – PHP Bugs May 18 '16 at 7:29
  • I'm used NetCommerce Payment gateway , yes i created a new custom payment method. – mahmoudismail May 18 '16 at 7:31
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You can check the signature from Gateway per compare your signature with the payment gateway signature example :

$my_signature = '47783y74834332hd3873298392332';
$gateway_signature = '47783y74834332hd3873298392332'
if ($my_signature == $gateway_signature){ echo 'true'; }else{echo 'false';}

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