private string calcPVV()
{
String PVV = String.Empty;
//Step-1
String TSP = getTSP();
/*
* //Step-2
* String Step2Result = Util.DES(Util.Cryption.Encrypt, TSP, KeyA);
*
* //Step-3
* String Step3Result = Util.DES(Util.Cryption.Decrypt, Step2Result, KeyB);
*
* //Step-4
* String Step4Result = Util.DES(Util.Cryption.Encrypt, Step3Result, KeyA);
*/
String Step4Result = String.Empty;
try
{
HSMClient HSM = new HSMClient(new TcpClient(IP, Port));
//HSMClient HSM = new HSMClient(new TcpClient("192.168.30.168", 1500));
HSM.initOps();
Step4Result = HSM.DES_Encrypt(DesMode.ECB, KeyLength.Double, 1, KeyPair.KP14, KeyA + KeyB, TSP);
HSM.TermClient();
HSM = null;
}
catch (Exception ex)
{
throw ex;
}
//Step-5
String Step5Result = String.Empty;
String ExtractHex = String.Empty;
for (int i = 0; i < Step4Result.Length; i++)
{
if (Char.IsDigit(Step4Result, i))
{
Step5Result += Step4Result.Substring(i, 1);
}
else
{
ExtractHex += Step4Result.Substring(i, 1);
}
}
//Step-6
String Step6Result = String.Empty;
for (int i = 0; i < ExtractHex.Length; i++)
{
Step6Result += (Convert.ToChar(ExtractHex.Substring(i, 1)) - 'A').ToString();
}
//Step-7
String Concatenate = Step5Result + Step6Result;
return(Concatenate.Substring(0, 4));
}
private String calcCVV(String pan, String expirationDate, String serviceCode)
{
String CVV = String.Empty;
//Step-1
String extractData = String.Empty, block1 = String.Empty, block2 = String.Empty;
//Step-2
extractData = (pan + expirationDate + serviceCode).PadRight(32, '0');
//Step-3
block1 = extractData.Substring(0, 16);
block2 = extractData.Substring(16, 16);
/*
* //Step-4
* String Step4Result = Util.DES(Util.Cryption.Encrypt, block1, KeyA);
* throw new Exception(Step4Result);
*
* //Step-5
* String XorResult = Util.xorBytes(Step4Result, block2);
* String Step5Result = Util.DES(Util.Cryption.Encrypt, XorResult, KeyA);
*
* //Step-6
* String Step6Result = Util.DES(Util.Cryption.Decrypt, Step5Result, KeyB);
*
* //Step-7
* String Step7Result = Util.DES(Util.Cryption.Encrypt, Step6Result, KeyA);
*/
///*
String Step4Result = String.Empty;
String XorResult = String.Empty;
String Step7Result = String.Empty;
try
{
HSMClient HSM = new HSMClient(new TcpClient(IP, Port));
//HSMClient HSM = new HSMClient(new TcpClient("192.168.30.168", 1500));
HSM.initOps();
Step4Result = HSM.DES_Encrypt(DesMode.ECB, KeyLength.Single, 1, KeyPair.KP14, KeyA, block1);
XorResult = Util.xorBytes(Step4Result, block2);
Step7Result = HSM.DES_Encrypt(DesMode.ECB, KeyLength.Double, 1, KeyPair.KP14, KeyA + KeyB, XorResult);
HSM.TermClient();
HSM = null;
}
catch (Exception ex)
{
throw ex;
}
//*/
//Step-8
String Step8Result = String.Empty;
String ExtractHex = String.Empty;
for (int i = 0; i < Step7Result.Length; i++)
{
if (Char.IsDigit(Step7Result, i))
{
Step8Result += Step7Result.Substring(i, 1);
}
else
{
ExtractHex += Step7Result.Substring(i, 1);
}
}
//Step-9
String Step9Result = String.Empty;
for (int i = 0; i < ExtractHex.Length; i++)
{
Step9Result += (Convert.ToChar(ExtractHex.Substring(i, 1)) - 'A').ToString();
}
//Step-10
String Concatenate = Step8Result + Step9Result;
return(Concatenate.Substring(0, 3));
}