3. Callback To Merchant Portal

CallBack/ Response URL


Call Back Response Parameters

How to identify parameters that are tampered?

If you want to check whether the parameters tamper or not, convert below parameters into a hash and compare with your hash which you got as a response in a query string.

Use the below method to identify parameter tempering.

  String outParams = $"trackid={trackid}&result={result}&refid={refid}";
  String outhashValue = GetHashValue(outParams,_key);
  if (Hash != outhashValue)
  //This means it is tampered
  // Your code

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