Callback and Redirect Url

Redirect URL (redirect_url)

Merchant/partner can set redirect_url during sending payment POST parameters. Redirect URL is browser to browser communication. After the bank transaction from the browser. The user will be redirected to this URL, merchant can set their own page. Information will be posted (POST method) to the URL. By default user will be redirected to SecurePay status page if the redirect URL is nil.

Callback URL (callback_url)

Merchant/partner can set callback_url during sending payment POST parameters. Callback URL is server to server communication. SecurePay server sends the transaction status to the merchant callback server (based on callback URL). It's very important, if error occur on the redirect URL.

Parameter from redirect and callback URL

This parameters will be sent the URL by using POST method.

source	FPX, DuitNow or Direct Debit
payment_status	True or False
currency	RM or other currency
transaction_amount	Transaction amount
transaction_amount_received	Amount received, if payment_status false set to 0.00
order_number	Order number is generated send
merchant_reference_number	This number is generated by SecurePay Platform
exchange_number	This number is generated by SecurePay Platform
buyer_name	Buyer name
buyer_phone	Buyer phone
buyer_email	Buyer email
payment_id	For reference
slient_ip	Client IP address
status_url	SecurePay status URL
retry_url	Any failed payment, can make retry using this links
receipt_url	SecurePay PDF receipt URL
checksum	Checksum generated by SecurePay for verification by merchant/partner
transaction_fee	Transaction fee amount paid, merchant - deduct fro account, Customer - customer will for the fee Credit - deduct from credit account
payment_mode	Merchant - deduct amount, Customer - customer will for the fee, Credit - deduct from credit amount
payment_method	Fpx online banking, DuitNow online banking or Direct Debit
fpx_model	B2C for consumer or B2B1 for business
duitnow_model	B2C for consumer or B2B1 for business
fpx_debit _auth_code	00 success, 99 - pending approval, other codes - unsuccessful .. If perform B2B1, there will be code 99, after approval the server will send callback with code 00.
params	Resend params from API

Checksum is use to verify message that are received by SecurePay Platform for redirect and callback. The verification will be done on the merchant/partner side. (the string also need to include uid).

Guide to generate checksum

Compulsory to use function that automatically sort the key and later replace with the value. Params will keep updating time to time.

Example

Ruby on Rails

example::

#Compulsory to use function that automatically sort the key and later replace with the value. Params will keep updating time to time.
#Token: df8aa0d55308ee762d2a5ce675cb9cfb4f85a59e41723573010e9c3f99f5457b
#Data: {:source=>"FPX", :fpx_name=>"N@ME()/ .-&BUYER", :fpx_bank=>"SBI BANK A", :fpx_transaction_id=>"2106141733330972", :fpx_status=>true, :fpx_status_message=>"Transaction Approved", :fpx_transaction_time=>"20210614173333", :fpx_model=>"B2C", :fpx_debit_auth_code=>"00", :payment_status=>true, :payment_method=>"fpx_online_banking", :payment_mode=>"customer", :transaction_fee=>"1.50", :currency=>"MYR", :amount=>"25.64", :order_number=>"20210614173332470", :merchant_reference_number=>nil, :exchange_number=>"MHQWK1623663213", :buyer_name=>"MOHD KHAIRI MOHD ADNAN", :buyer_phone=>"[phone]", :buyer_email=>"[email protected]", :payment_stage=>"payment_successful", :merchant_name=>"Muslimah Next Store", :merchant_co_number=>"x111222122y", :payment_id=>5747, :client_ip=>"60.53.196.69", :uid=>"c111e3bc3c9c22d572dc", :status_url=>"https://sandbox.securepay.my/api/v1/status/MHQWK1623663213?uid=c111e3bc3c9c22d572dc", :retry_url=>nil, :receipt_url=>"https://sandbox.securepay.my/api/v1/receipt/MHQWK1623663213.pdf?uid=c111e3bc3c9c22d572dc", :params=>nil, :created_at=>Mon, 14 Jun 2021 17:33:48 +08 +08:00, :created_at_unixtime=>"1623663228", :token=>"6mtetdxEvzj6KJ9htyTy"}

def CheckSum.generate(token = "no_token", **data)
	  
	  data_sort_asc = data.sort_by {|k, v| k}

	  data_string = data_sort_asc.map {|k,v| v}.join("|")
	  
    generate_checksum = OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha256'), token, data_string)
      
    return generate_checksum