If MessageBox.ShowExit Application?, Exit?, MessageBoxButtons.YesNo, MessageBoxIcon.Question = DialogResult.No Then
e.Cancel = True Else
Dim frm = Application.OpenFormsSplashScreen frm.Close
End If End Sub
End Class
2. Listing Program untuk Form Encrypt
Imports System.Numerics Imports System.IO
Imports Infragistics.Win.UltraWinGrid Imports System.Diagnostics
Public Class EncryptControl Private isLarge As Boolean = False
Private Sub txtPlaintext_ValueChangedByVal sender As System.Object, ByVal e As System.EventArgs Handles txtPlaintext.ValueChanged
lblChar.Text = : txtPlaintext.TextLength Char End Sub
Private Function checkKey As Boolean Dim retValue As Boolean = True
For Each ctrl In UltraGroupBox3.Controls If TypeNamectrl = UltraTextEditor Then
If ctrl.Text = Then retValue = False
End If End If
Next Return retValue
End Function Private Sub btnEncrypt_ClickByVal sender As System.Object, ByVal e As System.EventArgs
Handles btnEncrypt.Click If txtPlaintext.Text = Then
MessageBox.ShowInput your Plaintext, Encrypt Error, MessageBoxButtons.OK, MessageBoxIcon.Error
txtPlaintext.Focus Exit Sub
ElseIf Not checkKey Then MessageBox.ShowYour Key is missing, Encrypt Error, MessageBoxButtons.OK,
MessageBoxIcon.Error txtPrime.Focus
Exit Sub
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End If Dim EncryptTime As Stopwatch = New Stopwatch
Dim time As String = EncryptTime.Start
ciphertext = Dim trans As Transpose = New Transpose
txtTransCipher.Text = trans.TransposeEncrypttxtPlaintext.Text TriGrid.DataSource = trans.getTriangle
TriGrid.DisplayLayout.Override.DefaultColWidth = 25 TriGrid.DisplayLayout.Override.HeaderClickAction = HeaderClickAction.Select
TriGrid.DisplayLayout.Override.SelectTypeCol = SelectType.None TriGrid.DisplayLayout.Override.CellClickAction = CellClickAction.RowSelect
txtCiphertext.Text = Elgamal.EncrypttxtTransCipher.Text EncryptTime.Stop
If EncryptTime.ElapsedMilliseconds 1000 Then time = EncryptTime.ElapsedMilliseconds.ToString miliseconds
ElseIf EncryptTime.ElapsedMilliseconds 60000 Then time = Math.RoundEncryptTime.ElapsedMilliseconds 1000, 3.ToString seconds
Else time = Math.RoundEncryptTime.ElapsedMilliseconds 60000, 3.ToString minutes
End If lblTimeEncrypt.Text = Time to Encrypt File : time
End Sub Private Sub btnGetPrime_ClickByVal sender As System.Object, ByVal e As System.EventArgs
Handles btnGetPrime.Click txtPrime.Text = Elgamal.getPrimeoptBit.Value.ToString
End Sub Private Sub btnGenerate_ClickByVal sender As System.Object, ByVal e As System.EventArgs
Handles btnGenerate.Click If txtPrime.Text = Then
MessageBox.ShowChoose Prime Number First, Generate Key, MessageBoxButtons.OK, MessageBoxIcon.Exclamation
txtPrime.Focus Exit Sub
End If Dim GenerateTime As Stopwatch = New Stopwatch
GenerateTime.Start Elgamal.GenerateKeyBigInteger.ParsetxtPrime.Text
If Elgamal.isInputPrime = True Then txtAlpha.Text = alpha
txtA.Text = a txtAlphaA.Text = alphaA
Else txtAlpha.Text =
txtA.Text =
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txtAlphaA.Text = txtPrime.Focus
End If GenerateTime.Stop
Dim time As String = If GenerateTime.ElapsedMilliseconds 1000 Then
time = GenerateTime.ElapsedMilliseconds.ToString miliseconds ElseIf GenerateTime.ElapsedMilliseconds 60000 Then
time = Math.RoundGenerateTime.ElapsedMilliseconds 1000, 3.ToString seconds Else
time = Math.RoundGenerateTime.ElapsedMilliseconds 60000, 3.ToString minutes End If
lblTimeGenerate.Text = Time to Generate Key : time End Sub
Private Sub btnOpen_ClickByVal sender As System.Object, ByVal e As System.EventArgs Handles btnOpen.Click
Dim open As OpenFileDialog = New OpenFileDialog open.Filter = txt Files|.txt
open.FileName = .txt If open.ShowDialog = DialogResult.OK Then
Dim fstream As FileStream = New FileStreamopen.FileName, FileMode.Open, FileAccess.ReadWrite
Dim sreader As StreamReader = New StreamReaderfstream sreader.BaseStream.Seek0, SeekOrigin.Begin
txtPlaintext.Text = sreader.ReadToEnd sreader.Close
lblFilename.Text = : Path.GetFileNameopen.FileName lblLocation.Text = : Path.GetFullPathopen.FileName
End If End Sub
Private Sub btnSave_ClickByVal sender As System.Object, ByVal e As System.EventArgs Handles btnSave.Click
Dim saveFileDialog1 As SaveFileDialog = New SaveFileDialog saveFileDialog1.Filter = txt files |.txt|All files |.
saveFileDialog1.Title = Save File saveFileDialog1.FileName = .txt
If saveFileDialog1.ShowDialog = DialogResult.OK Then Dim filename As String = saveFileDialog1.FileName
Dim fstream As FileStream = New FileStreamfilename, FileMode.OpenOrCreate Dim sw As StreamWriter = New StreamWriterfstream
Dim seekorigin As SeekOrigin = New SeekOrigin sw.BaseStream.Seek0, seekorigin
sw.WriteLinetxtCiphertext.Text sw.Flush
sw.Close End If
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End Sub Private Sub TriGrid_MouseHoverByVal sender As System.Object, ByVal e As System.EventArgs
Handles TriGrid.MouseHover If TriGrid.Dock = DockStyle.None Then
ToolTip1.ShowDouble Click to Enlarge, Me.TriGrid, 1000 Else
ToolTip1.HideMe.TriGrid End If
End Sub Private Sub TriGrid_DoubleClickByVal sender As System.Object, ByVal e As System.EventArgs
Handles TriGrid.DoubleClick If TriGrid.Dock = DockStyle.Fill Then
isLarge = False UltraGroupBox4.Dock = DockStyle.None
TriGrid.Dock = DockStyle.None Else
isLarge = True UltraGroupBox4.Dock = DockStyle.Fill
TriGrid.Dock = DockStyle.Fill UltraGroupBox4.BringToFront
TriGrid.BringToFront EscSplash.Show
ToolTip1.HideMe.TriGrid End If
End Sub Private Sub TriGrid_KeyDownByVal sender As System.Object, ByVal e As
System.Windows.Forms.KeyEventArgs Handles TriGrid.KeyDown If e.KeyCode = Keys.Escape Then
isLarge = False UltraGroupBox4.Dock = DockStyle.None
TriGrid.Dock = DockStyle.None End If
End Sub Private Sub TriGrid_MouseLeaveByVal sender As Object, ByVal e As System.EventArgs Handles
TriGrid.MouseLeave isLarge = True
End Sub Private Sub EncryptControl_LoadByVal sender As System.Object, ByVal e As System.EventArgs
Handles MyBase.Load primeNumber = 0
alpha = 0 a = 0
b = 0 alphaA = 0
plaintext = 0 ciphertext = 0
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End Sub Private Sub txtPrime_ValueChangedByVal sender As System.Object, ByVal e As System.EventArgs
Handles txtPrime.ValueChanged If txtPrime.Text Then
primeNumber = txtPrime.Text End If
End Sub End Class
3.
Listing Program untuk Form Decrypt
Imports System.Numerics Imports System.IO
Imports Infragistics.Win.UltraWinGrid Public Class DecryptControl
Private isLarge As Boolean = False Private Sub btnDecrypt_ClickByVal sender As System.Object, ByVal e As System.EventArgs
Handles btnDecrypt.Click If txtCiphertext.Text = Then
MessageBox.ShowInput your Ciphertext, , MessageBoxButtons.OK, MessageBoxIcon.Warning
txtCiphertext.Focus Exit Sub
End If If txtPrime.Text = Then
MessageBox.ShowPrime number is missing, , MessageBoxButtons.OK, MessageBoxIcon.Warning
txtPrime.Focus Exit Sub
End If If txtA.Text = Then
MessageBox.ShowPrivate Key is missing, , MessageBoxButtons.OK, MessageBoxIcon.Warning
txtA.Focus Exit Sub
End If If Not Elgamal.FermatprimeNumber Then
MessageBox.ShowNumber is not Prime, , MessageBoxButtons.OK, MessageBoxIcon.Warning
txtPrime.Focus Exit Sub
End If Dim EncryptTime As Stopwatch = New Stopwatch
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Dim time As String = EncryptTime.Start
txtPlaintext.Text = Elgamal.DecrypttxtCiphertext.Text Dim trans As Transpose = New Transpose
txtTransPlain.Text = trans.TransposeDecrypttxtPlaintext.Text TriGrid.DataSource = trans.getTriangle
TriGrid.DisplayLayout.Override.DefaultColWidth = 25 TriGrid.DisplayLayout.Override.HeaderClickAction = HeaderClickAction.Select
TriGrid.DisplayLayout.Override.SelectTypeCol = SelectType.None TriGrid.DisplayLayout.Override.CellClickAction = CellClickAction.RowSelect
EncryptTime.Stop If EncryptTime.ElapsedMilliseconds 1000 Then
time = EncryptTime.ElapsedMilliseconds.ToString miliseconds ElseIf EncryptTime.ElapsedMilliseconds 60000 Then
time = Math.RoundEncryptTime.ElapsedMilliseconds 1000, 3.ToString seconds Else
time = Math.RoundEncryptTime.ElapsedMilliseconds 60000, 3.ToString minutes End If
lblTimeDecrypt.Text = Time to Decrypt File : time End Sub
Private Sub txtPrime_ValueChangedByVal sender As System.Object, ByVal e As System.EventArgs Handles txtPrime.ValueChanged
If txtPrime.Text Then primeNumber = BigInteger.ParsetxtPrime.Text
End If End Sub
Private Sub txtA_ValueChangedByVal sender As System.Object, ByVal e As System.EventArgs Handles txtA.ValueChanged
If txtA.Text Then a = BigInteger.ParsetxtA.Text
End If End Sub
Private Sub btnSave_ClickByVal sender As System.Object, ByVal e As System.EventArgs Handles btnSave.Click
Dim saveFileDialog1 As SaveFileDialog = New SaveFileDialog saveFileDialog1.Filter = txt files |.txt|All files |.
saveFileDialog1.Title = Save File saveFileDialog1.FileName = .txt
If saveFileDialog1.ShowDialog = DialogResult.OK Then Dim filename As String = saveFileDialog1.FileName
Dim fstream As FileStream = New FileStreamfilename, FileMode.OpenOrCreate Dim sw As StreamWriter = New StreamWriterfstream
Dim seekorigin As SeekOrigin = New SeekOrigin
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sw.BaseStream.Seek0, seekorigin sw.WriteLinetxtTransPlain.Text
sw.Flush sw.Close
End If End Sub
Private Sub btnOpen_ClickByVal sender As System.Object, ByVal e As System.EventArgs Handles btnOpen.Click
Dim open As OpenFileDialog = New OpenFileDialog open.Filter = txt Files|.txt
open.FileName = .txt If open.ShowDialog = DialogResult.OK Then
Dim fstream As FileStream = New FileStreamopen.FileName, FileMode.Open, FileAccess.ReadWrite
Dim sreader As StreamReader = New StreamReaderfstream sreader.BaseStream.Seek0, SeekOrigin.Begin
txtCiphertext.Text = sreader.ReadToEnd sreader.Close
lblFilename.Text = : Path.GetFileNameopen.FileName lblLocation.Text = : Path.GetFullPathopen.FileName
End If End Sub
Private Sub txtCiphertext_ValueChangedByVal sender As System.Object, ByVal e As System.EventArgs Handles txtCiphertext.ValueChanged
lblChar.Text = : txtCiphertext.Text.Split .Length - 1 Char End Sub
Private Sub TriGrid_MouseHoverByVal sender As System.Object, ByVal e As System.EventArgs Handles TriGrid.MouseHover
If TriGrid.Dock = DockStyle.None Then ToolTip1.ShowDouble Click to Enlarge, Me.TriGrid, 1000
Else ToolTip1.HideMe.TriGrid
End If End Sub
Private Sub TriGrid_DoubleClickByVal sender As System.Object, ByVal e As System.EventArgs Handles TriGrid.DoubleClick
If TriGrid.Dock = DockStyle.Fill Then isLarge = False
UltraGroupBox4.Dock = DockStyle.None TriGrid.Dock = DockStyle.None
Else isLarge = True
UltraGroupBox4.Dock = DockStyle.Fill TriGrid.Dock = DockStyle.Fill
UltraGroupBox4.BringToFront TriGrid.BringToFront
EscSplash.Show
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ToolTip1.HideMe.TriGrid End If
End Sub Private Sub TriGrid_KeyDownByVal sender As System.Object, ByVal e As
System.Windows.Forms.KeyEventArgs Handles TriGrid.KeyDown If e.KeyCode = Keys.Escape Then
isLarge = False UltraGroupBox4.Dock = DockStyle.None
TriGrid.Dock = DockStyle.None End If
End Sub Private Sub DecryptControl_MouseLeaveByVal sender As Object, ByVal e As System.EventArgs
Handles Me.MouseLeave isLarge = True
End Sub Private Sub DecryptControl_LoadByVal sender As System.Object, ByVal e As System.EventArgs
Handles MyBase.Load alpha = 0
b = 0 alphaA = 0
plaintext = 0 ciphertext = 0
txtPrime.Text = primeNumber.ToString txtA.Text = a.ToString
End Sub End Class
4. Listing Program untuk Class ElGamal
