public static PayPhoneSecureData GetPayphoneSecureDataInfo(string msisdn, string paymentMethodTypeCode, string ttid, long amount = -1, string version = "10")
{
var payPhoneSecureDataInfo = new PayPhoneSecureData()
{
CustomerId = msisdn,
PrimaryMobileNumber = msisdn,
PinDesKey = GenerateRandomString(32),
Identifier = ttid,
PayPhoneSecureDataVersion = version,
PayPhoneSecureMacVersion = version,
Type = paymentMethodTypeCode
};
if (amount != -1)
{
payPhoneSecureDataInfo.Amount = amount.ToString();
}
return(payPhoneSecureDataInfo);
}
public static string CalculateSecureData12(PayPhoneSecureData secureDataInfo, byte[] macDesBytes, string macDataVaue = null)
{
var secureBytes = new byte[64];
var headerBytes = Hex.Decode(secureDataInfo.PayPhoneSecureDataHeaderValue);
var formatVersionBytes = Hex.Decode(secureDataInfo.PayPhoneSecureDataVersion);
var macVersionBytes = Hex.Decode(secureDataInfo.PayPhoneSecureMacVersion);
var footerBytes = Hex.Decode(secureDataInfo.FooterBytes);
byte[] pinDesKey;
try
{
if (secureDataInfo.PinDesKey.Length == 32)
{
pinDesKey = Hex.Decode(secureDataInfo.PinDesKey);
}
else
{
pinDesKey = Hex.Decode(string.Format("{0}{1}", secureDataInfo.PinDesKey.Length.ToString(CultureInfo.InvariantCulture).PadLeft(2, '0'), secureDataInfo.PinDesKey.PadRight(30, '0')));
}
}
catch (Exception e)
{
throw new Exception(string.Format("Error while Hex.Decoding account number: {0}", secureDataInfo.PinDesKey), e);
}
byte[] customerIdBytes;
try
{
var customerId = string.IsNullOrWhiteSpace(secureDataInfo.CustomerId) ? secureDataInfo.Pan : secureDataInfo.CustomerId;
customerIdBytes = Hex.Decode(string.Format("{0}{1}{2}", (customerId.Length).ToString().Length, customerId.Length, customerId).PadRight(40, '0'));
}
catch (Exception e)
{
throw new Exception(string.Format("Error while Hex.Decoding pan: {0}", secureDataInfo.Pan), e);
}
var macData = "";
if (string.IsNullOrWhiteSpace(macDataVaue))
{
macData = string.Format("{0}default{1}", secureDataInfo.PrimaryMobileNumber, secureDataInfo.Identifier);
}
else
{
macData = macDataVaue;
}
var macBytes = BouncyCastleGetCbcMac(macData, macDesBytes);
// macBytes = Hex.Encode(macBytes);
Array.Copy(headerBytes, 0, secureBytes, 0, 1);
Array.Copy(formatVersionBytes, 0, secureBytes, 1, 1);
Array.Copy(macVersionBytes, 0, secureBytes, 2, 1);
Array.Copy(pinDesKey, 0, secureBytes, 3, 16);
Array.Copy(macDesBytes, 0, secureBytes, 19, 16);
Array.Copy(customerIdBytes, 0, secureBytes, 35, 20);
Array.Copy(macBytes, 0, secureBytes, 55, 4);
//use this string to pard the data
var paddingStringBytes = Hex.Decode(SetFixedLength("", 28, true, '0'));
Array.Copy(paddingStringBytes, 0, secureBytes, 59, 4);
Array.Copy(footerBytes, 0, secureBytes, 63, 1);
var encryptedSecureData = Hex.Encode(BouncyCastleRsaEncrypt(secureBytes, secureDataInfo.RsaPublicKeyExponent, secureDataInfo.RsaPublicKeyModulus));
return(Encoding.UTF8.GetString(encryptedSecureData, 0, encryptedSecureData.Length));
}
