Returns a string of data for the PIN pad to hash with the MAC algorithm.
Each transaction you send (excluding RequestCurrentKeys and MACReversals) requires an accompanying MACValue. This value is a hash of the contents of GetRequestDataToMAC, and is hashed by the PIN Pad device using the MACKey returned in response to the last transaction.
The GetRequestDataToMAC method returns a string containing the values of several transaction properties. This string must be MAC'ed by the PIN pad, so it is essential that the following properties be set before calling GetRequestDataToMAC:
- and optionally AccountType
Note that VeriFone pinpads support a PURCHASE transaction where the CardTrack2Data, EncryptedPIN, AccountType, and MACValue are returned in a single step. When using a VeriFone pad make sure AccountType is set to acctNotSet, otherwise the MACValue will not be calculated correctly. (AccountType must be set before calling GetRequestDataToMAC for Ingenico pads)
component.MerchantNumber = "yourMerchantNumber" component.TerminalNumber = "100" component.ClientNumber = "0002" component.UserId = "yourUserId" component.Password = "yourPassword" component.SequenceNumber = 2 component.TransactionAmount = "1.00" component.PinPadSerialNumber = "30700015P3600000" ' from label on back of PIN pad component.InteracTransactionType = ittSale component.AccountType = acctChecking component.CardTrack2Data = "9999999800002773=05121015432112345678" ' from card reader component.EncryptedPIN = "FFFFFFFFFFFFFFFF" ' from the PIN pad ' Now use the PIN pad to MAC the value returned from GetRequestDataToMAC ' and then set MACValue with the results component.MACValue = "FFFFFFFF" component.Authorize()
.NET Standard Notes
To call this method in an asynchronous manner call GetRequestDataToMACAsync instead. When the method completes (or an error is encountered) the GetRequestDataToMACCompleted event will fire.