private void tbBlockB_TextChanged(object sender, EventArgs e)
{
string content = tbBlockB.Text;
if (string.IsNullOrEmpty(content) || string.IsNullOrWhiteSpace(content))
{
_hLabelBlockB.Clear();
_validBlockB = false;
tbXor.Text = string.Empty;
return;
}
foreach (char c in content)
{
if (!Helper.IsHexChar(c))
{
_hLabelBlockB.SetHint(Color.Red, "Block can only contain hex digit");
_validBlockB = false;
return;
}
}
_validBlockB = true;
_hLabelBlockB.Clear();
if (_validBlockA && _validBlockB)
{
tbXor.Text = Encryptor.Instance.Xor(tbBlockA.Text, content);
}
}
private void tbPan_TextChanged(object sender, EventArgs e)
{
string content = tbPan.Text;
if (string.IsNullOrEmpty(content) || string.IsNullOrWhiteSpace(content))
{
_hLabelPan.Clear();
_validPan = false;
return;
}
foreach (char c in content)
{
if (!Helper.IsDigit(c))
{
_hLabelPan.SetHint(Color.Red, "PAN must only contain digits");
_validPan = false;
return;
}
}
if (content.Length < 13 || content.Length > 19)
{
_hLabelPan.SetHint(Color.Red, "Invalid PAN length");
_validPan = false;
return;
}
_hLabelPan.Clear();
_validPan = true;
}
private void tbServiceCode_TextChanged(object sender, EventArgs e)
{
string content = tbServiceCode.Text;
if (string.IsNullOrEmpty(content) || string.IsNullOrWhiteSpace(content))
{
_hLabelServiceCode.Clear();
_validServiceCode = false;
return;
}
foreach (char c in content)
{
if (!Helper.IsDigit(c))
{
_hLabelServiceCode.SetHint(Color.Red, "Service code must only contain digits");
_validServiceCode = false;
return;
}
}
if (content.Length != 3)
{
_hLabelServiceCode.SetHint(Color.Red, "Invalid service code length");
_validServiceCode = false;
return;
}
_hLabelServiceCode.Clear();
_validServiceCode = true;
}
private void tbClearAwk_TextChanged(object sender, EventArgs e)
{
string content = tbClearAwk.Text;
if (string.IsNullOrEmpty(content) || string.IsNullOrWhiteSpace(content))
{
_hLabelClearAwk.Clear();
_validClearAwk = false;
return;
}
content = content.Replace(" ", "");
foreach (char c in content)
{
if (!Helper.IsHexChar(c))
{
_hLabelClearAwk.SetHint(Color.Red, "AWK must only contain hex digits");
_validClearAwk = false;
return;
}
}
if (content.Length != 32)
{
_hLabelClearAwk.SetHint(Color.Red, "AWK size must be 16 bytes");
_validClearAwk = false;
return;
}
_hLabelClearAwk.SetHint(Color.Black, "Check value: " + Encryptor.Instance.CalKCV(content));
_validClearAwk = true;
}
private void tbPinBlockEncrypted_TextChanged(object sender, EventArgs e)
{
if (!tbPinBlockEncrypted.ReadOnly)
{
string content = tbPinBlockEncrypted.Text;
if (string.IsNullOrEmpty(content) || string.IsNullOrWhiteSpace(content))
{
_hLabelPinBlockEncrypted.Clear();
_validPinBlockEncrypted = false;
tbPin.ReadOnly = false;
btnCalculatePinBlock.Enabled = true;
tbPinBlock.Text = string.Empty;
tbPin.Text = string.Empty;
return;
}
tbPin.ReadOnly = true;
btnCalculatePinBlock.Enabled = false;
foreach (char c in content)
{
if (!Helper.IsHexChar(c))
{
_hLabelPinBlockEncrypted.SetHint(Color.Red, "Block must only contain hex digits");
_validPinBlockEncrypted = false;
return;
}
}
if (content.Length != 16)
{
_hLabelPinBlockEncrypted.SetHint(Color.Red, "Block size must be 8 bytes");
_validPinBlockEncrypted = false;
return;
}
_hLabelPinBlockEncrypted.Clear();
_validPinBlockEncrypted = true;
}
}
private void tbPin_TextChanged(object sender, EventArgs e)
{
if (!tbPin.ReadOnly)
{
string content = tbPin.Text;
if (string.IsNullOrEmpty(content) || string.IsNullOrWhiteSpace(content))
{
_hLabelPin.Clear();
_validPin = false;
tbPinBlockEncrypted.ReadOnly = false;
btnCalculatePin.Enabled = true;
tbPinBlockEncrypted.Text = string.Empty;
tbPinBlock.Text = string.Empty;
return;
}
tbPinBlockEncrypted.ReadOnly = true;
btnCalculatePin.Enabled = false;
foreach (char c in content)
{
if (!Helper.IsDigit(c))
{
_hLabelPin.SetHint(Color.Red, "PIN must only contain digits");
_validPin = false;
return;
}
}
if (content.Length < 4 || content.Length > 6)
{
_hLabelPin.SetHint(Color.Red, "Invalid PIN length");
_validPin = false;
return;
}
_hLabelPin.Clear();
_validPin = true;
}
}
//-------------------------------------------------------------------------------------------------------
#region Event handlers
//-------------------------------------------------------------------------------------------------------
private void tbDataBlock_TextChanged(object sender, EventArgs e)
{
string content = tbDataBlock.Text;
if (string.IsNullOrEmpty(content) || string.IsNullOrWhiteSpace(content))
{
_hLabelDataBlock.Clear();
_validDataBlock = false;
return;
}
content = content.Replace(" ", "");
foreach (char c in content)
{
if (!Helper.IsHexChar(c))
{
_hLabelDataBlock.SetHint(Color.Red, "Block must only contain hex digits");
_validDataBlock = false;
return;
}
}
if (content.Length < 16)
{
_hLabelDataBlock.SetHint(Color.Red, "Block size must be at leaset 8 bytes");
_validDataBlock = false;
return;
}
if (!IsPowOfTwo(content.Length))
{
_hLabelDataBlock.SetHint(Color.Red, "Block size must be power of two");
_validDataBlock = false;
return;
}
_validDataBlock = true;
_hLabelDataBlock.Clear();
}