public static bool VerifyCheckSum(string masterKey, Dictionary <string, string> parameters, string checkSum)
{
CheckSum.ValidateVerifyCheckSumInput(masterKey, checkSum);
try
{
string str1 = Crypto.Decrypt(checkSum, masterKey);
if (str1 == null || str1.Length < 4)
{
return(false);
}
string str2 = str1.Substring(str1.Length - 4, 4);
MessageConsole.WriteLine("Salt:::: " + str2);
MessageConsole.WriteLine();
MessageConsole.WriteLine("Input CheckSum:::: " + checkSum);
string checkSumString = SecurityUtils.CreateCheckSumString(parameters);
MessageConsole.WriteLine();
MessageConsole.WriteLine("GeneratedCheckSum String:::: " + checkSumString);
string inputValue = checkSumString + str2;
MessageConsole.WriteLine();
MessageConsole.WriteLine("GeneratedCheckSum String with Salt:::: " + inputValue);
string hashedString = SecurityUtils.GetHashedString(inputValue);
MessageConsole.WriteLine();
MessageConsole.WriteLine("HashedGeneratedCheckSum String:::: " + hashedString);
string str3 = hashedString + str2;
MessageConsole.WriteLine();
MessageConsole.WriteLine("HashedGeneratedCheckSum String with Salt:::: " + str3);
return(str3.Equals(str1));
}
catch (System.Exception ex)
{
throw new CryptoException("Exception occurred while verifying CheckSum. " + ex.Message);
}
}
public static string GenerateCheckSumForRefund(string masterKey, Dictionary <string, string> parameters)
{
CheckSum.ValidateGenerateCheckSumInput(masterKey);
try
{
string checkSumString = SecurityUtils.CreateCheckSumString(parameters);
string randomString = StringUtils.GenerateRandomString(4);
string inputValue = checkSumString + randomString;
MessageConsole.WriteLine();
MessageConsole.WriteLine("Final CheckSum String:::: " + inputValue);
string hashedString = SecurityUtils.GetHashedString(inputValue);
MessageConsole.WriteLine();
MessageConsole.WriteLine("HashedCheckSum String:::: " + hashedString);
string clearText = hashedString + randomString;
MessageConsole.WriteLine();
MessageConsole.WriteLine("HashedCheckSum String with Salt:::: " + clearText);
return(Crypto.Encrypt(clearText, masterKey));
}
catch (System.Exception ex)
{
throw new CryptoException("Exception occurred while generating CheckSum. " + ex.Message);
}
}
public static string GenerateCheckSum(string masterKey, Dictionary <string, string> parameters)
{
CheckSum.ValidateGenerateCheckSumInput(masterKey);
Dictionary <string, string> parameters1 = new Dictionary <string, string>();
try
{
foreach (string key in parameters.Keys)
{
if (parameters[key].Trim().ToUpper().Contains("REFUND") || parameters[key].Trim().Contains("|"))
{
parameters1.Add(key.Trim(), "");
}
else
{
parameters1.Add(key.Trim(), parameters[key].Trim());
}
}
string checkSumString = SecurityUtils.CreateCheckSumString(parameters1);
string randomString = StringUtils.GenerateRandomString(4);
string inputValue = checkSumString + randomString;
MessageConsole.WriteLine();
MessageConsole.WriteLine("Final CheckSum String:::: " + inputValue);
string hashedString = SecurityUtils.GetHashedString(inputValue);
MessageConsole.WriteLine();
MessageConsole.WriteLine("HashedCheckSum String:::: " + hashedString);
string clearText = hashedString + randomString;
MessageConsole.WriteLine();
MessageConsole.WriteLine("HashedCheckSum String with Salt:::: " + clearText);
return(Crypto.Encrypt(clearText, masterKey));
}
catch (System.Exception ex)
{
throw new CryptoException("Exception occurred while generating CheckSum. " + ex.Message);
}
}