private void bValidate_Click(object sender, RoutedEventArgs e)
{
if (this.m_bValidateCorrect == true)
{
if (this.validator.verifyRsaSignature(Datablock.getInstance().Message, signature.GetSignature()))
{
this.ResultValid();
}
else
{
this.ResultNotValid();
}
}
else if (this.m_bValidateCorrect == false)
{
if (this.validator.verifyRsaSignatureWithFlaw(Datablock.getInstance().Message, signature.GetSignature()))
{
this.ResultValid();
}
else
{
this.ResultNotValid();
}
}
}
public SigGenBleichenbControl()
{
InitializeComponent();
RsaKey.Instance.RaiseKeyGeneratedEvent += handleCustomEvent; // listen
Datablock.getInstance().RaiseParamChangedEvent += handleCustomEvent;
this.handleCustomEvent(ParameterChangeType.RsaKey);
this.loadComboDataBlocPos(24);
}
// fired when Checkbox Selection changed
// Hashfunction IdentificationTextbox filled & selected Hashfunction is set
private void cbHashFunc_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
Datablock.getInstance().HashFunctionIdent = (HashFunctionIdent)this.cbHashFunc.SelectedValue;
this.tbHashIdent.Text = Datablock.getInstance().HashFunctionIdent.DERIdent;
// HashDigest Textboxen leeren; werden bei Execute befüllt
this.tbHashDigest.Text = String.Empty;
this.lblHashDigestLength.Content = String.Empty;
}
private void handleParamChanged(ParameterChangeType type)
{
if (ParameterChangeType.Message == type)
{
if (true == this.tbInputText.IsEnabled)
{
this.tbInputText.Text = Encoding.ASCII.GetString(Datablock.getInstance().Message);
}
this.tbHashDigest.Text = Datablock.getInstance().GetHashDigestToHexString();
}
}
private void loadComboDataBlocPos(int start)
{
this.cbPosDataBlock.Items.Clear();
int lengthDatablock = Datablock.getInstance().HashFunctionIdent.DERIdent.Length * 4 + Datablock.getInstance().HashFunctionIdent.digestLength + 8;
int end = RsaKey.Instance.RsaKeySize - lengthDatablock - start;
for (int i = start; i <= end; i += 8)
{
this.cbPosDataBlock.Items.Add(i);
}
this.cbPosDataBlock.SelectedIndex = (end - start) / 10;
}
public void Initialize()
{
// ComboBox befüllen
this.cbHashFunc.Items.Add(HashFuncIdentHandler.SHA1);
this.cbHashFunc.Items.Add(HashFuncIdentHandler.SHA256);
this.cbHashFunc.Items.Add(HashFuncIdentHandler.SHA384);
this.cbHashFunc.Items.Add(HashFuncIdentHandler.SHA512);
this.cbHashFunc.Items.Add(HashFuncIdentHandler.MD2);
this.cbHashFunc.Items.Add(HashFuncIdentHandler.MD5);
this.cbHashFunc.SelectedIndex = 0;
this.rbTextFromBox.IsChecked = true;
Datablock.getInstance().RaiseParamChangedEvent += handleParamChanged;
}
public static void loadRtbColoredSig(RichTextBox richTB, string decryptedSig)
{
FlowDocument flowDoc = new FlowDocument();
Paragraph para = new Paragraph();
Run run = new Run(decryptedSig);
para.Inlines.Add(run);
int paddingEnd = decryptedSig.IndexOf("ff0030"); // Ende des Padding
int identEnd = paddingEnd + 10 + Datablock.getInstance().HashFunctionIdent.DERIdent.Length;
int digestEnd = identEnd + 2 + (Datablock.getInstance().HashFunctionIdent.digestLength / 4);
TextRange rangePadding = UserControlHelper.GenTextRange(run, 4, paddingEnd + 2, Colors.Green);
TextRange rangeIdent = UserControlHelper.GenTextRange(run, paddingEnd + 8, identEnd, Colors.Blue);
TextRange rangeDigest = UserControlHelper.GenTextRange(run, identEnd, digestEnd, Colors.Red);
flowDoc.Blocks.Add(para);
richTB.Document = flowDoc;
}
private void bGenerate_Click(object sender, RoutedEventArgs e)
{
byte[] byteToHash;
if (this.rbTextFromBox.IsChecked == true)
{
byteToHash = Encoding.ASCII.GetBytes(this.tbInputText.Text);
}
else if (this.rbTextfromFile.IsChecked == true)
{
FileStream fs = new FileStream(this.fileName, FileMode.Open, FileAccess.Read);
byteToHash = new byte[fs.Length];
fs.Read(byteToHash, 0, System.Convert.ToInt32(fs.Length));
fs.Close();
}
else
{
byteToHash = Encoding.ASCII.GetBytes("Error!");
}
// Text setzen, Hash wird automatisch generiert, da in Datablock das Event getriggert wird und hier im Handling Hashgenerierung auslöst
Datablock.getInstance().Message = byteToHash;
OnRaiseDataBlockGenerated(ParameterChangeType.DataBlock);
}
