private void btn_Decrypt3DES_Click(object sender, EventArgs e)
{
string encryptText = tb_EncryptText.Text;
string csPassword = tb_Password.Text;
CryptoSymmetric crypto = new CryptoSymmetric();
crypto.CryptoType = CryptoSymmetric.CryptoTypes.TripleDES;
crypto.StringFormat = StringFormats.HEX;
string decryptText = crypto.Decrypt(encryptText, csPassword);
tb_DecryptText.Text = decryptText;
}
private void btn_Decrypt3DES192_Click(object sender, EventArgs e)
{
string encryptText = tb_EncryptText.Text;
string csPassword = tb_Password.Text;
string csIV = tb_InitializationVector.Text;
CryptoSymmetric crypto = new CryptoSymmetric();
crypto.CryptoType = CryptoSymmetric.CryptoTypes.TripleDES_192;
crypto.StringFormat = StringFormats.HEX;
crypto.CalculateKey = false;
string decryptText = crypto.Decrypt(encryptText, csPassword, csIV);
tb_DecryptText.Text = decryptText;
}
/// <summary>
/// Проверява Рег.Номер
/// </summary>
/// <param name="registrationNumber">Рег.Номер</param>
/// <returns></returns>
public bool Validation(string registrationNumber, DateTime?limiteDate = null)
{
if (registrationNumber == "")
{
return(false);
}
try
{
_IsValid = Validation(registrationNumber
, _ProcessorId
, _ApplicationID
, _ApplicationKey
, _ApplicationIv);
// Добава лимитиране, ако 'Рег.Номер' е валиден
if (_IsValid && (limiteDate != null))
{
if (_RegistrationDate > limiteDate)
{
_RegistrationDate = (DateTime)limiteDate;
CryptoSymmetric crypto = new CryptoSymmetric();
crypto.CryptoType = CryptoSymmetric.CryptoTypes.TripleDES_192;
crypto.StringFormat = StringFormats.HEX;
crypto.CalculateKey = false;
string processorId = crypto.Decrypt(_ApplicationID, _ApplicationKey, _ApplicationIv);
string uniAppId = Hashing.Hash(processorId, Hashing.HashingTypes.MD5, Hashing.EncodingTypes.ASCII, StringFormats.BIT).Substring(0, 15);
string validUntil = _RegistrationDate.ToString("yyyyMMdd");
_RegistrationNumber = crypto.Encrypt(validUntil + uniAppId, _ApplicationKey, _ApplicationIv);
}
}
}
catch
{ _IsValid = false; }
return(_IsValid);
}