/// <summary>A MD5 checksum to ensure data integrity. See http://quickpay.net/faq/md5check/ for more information.</summary>
public string CalculateMD5()
{
string md5String =
MsgType + _ordernumber + _amount + _currency + _time + _state + _qpstat + _qpstatmsg + _chstat +
_chstatmsg
+ _merchant + _merchantemail + _transaction + _cardtype + CardNumber + _cardexpire +
SplitPayment + FraudProbability + FraudRemarks + FraudReport + Fee + Secret;
using (var md5 = new MD5CryptoServiceProvider())
{
byte[] md5Hash = md5.ComputeHash(Encoding.UTF8.GetBytes(md5String));
string md5HashStr = PaymentRequestParameters.ToHexString(md5Hash);
if (!Md5Check.IsMatch(md5HashStr))
{
throw new ArgumentException();
}
return(md5HashStr);
}
}
private void Authorize(PaymentRequestParameters request)
{
NameValueCollection data = request.ToNameValueCollection();
Authorize(data);
}