This app uses PayU web portal(web pages) for payment process using CB without SDK.
Note : In this app only CB is integrated,SDK is not integrated.
If you are using only CB then you need only payment hash.
What is Hash?
Every transaction (payment or non-payment) needs a hash by the merchant before sending the transaction details to PayU. This is required for PayU to validate the authenticity of the transaction. This should be done on your server.
Formula to generate payment hash
Payment Hash
sha512(key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5||||||salt)
For more information regarding PayU APIs and mandatory parameters,refer Integration Document ver2.5