Tampilan Menu :
Design form :
listing program :
Public Class Form1
Private Sub KriptografiCaesarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiCaesarToolStripMenuItem.Click
Form2.MdiParent = Me
Form2.Show()
End Sub
Private Sub KriptografiVernamToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiVernamToolStripMenuItem.Click
Form3.MdiParent = Me
Form3.Show()
End Sub
Private Sub KriptografiGronsfeldToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiGronsfeldToolStripMenuItem.Click
Form4.MdiParent = Me
Form4.Show()
End Sub
Private Sub KriptografiVigenereToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiVigenereToolStripMenuItem.Click
Form5.MdiParent = Me
Form5.Show()
End Sub
Private Sub KeluarProgramToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KeluarProgramToolStripMenuItem.Click
End
End Sub
End Class
1. KRIPTOGRAFI CAESAR
Design Form :
Public Class Form2
Private Sub enkripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles enkripsi.Click
Dim x As String = ""
Dim xkalimat As String = ""
For i = 1 To Len(plainteks.Text)
x = Mid(plainteks.Text, i, i)
x = Chr(Asc(x) + 3)
xkalimat = xkalimat + x
Next
chiperteks.Text = xkalimat
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim x As String = ""
Dim xkalimat As String = ""
For i = 1 To Len(chiperteks.Text)
x = Mid(chiperteks.Text, i, i)
x = Chr(Asc(x) - 3)
xkalimat = xkalimat + x
Next
plainteks.Text = xkalimat
End Sub
End Class
Hasil Program :
2. KRIPTOGRAFI VERNAM
Design form :
listing program :
Public Class Form3
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
plainteks.Text = ""
kunci.Text = ""
chiperteks.Text = ""
End Sub
Private Sub enkripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles enkripsi.Click
Dim j As Integer
Dim jum As Integer
Dim skey As String
Dim nKata As Integer
Dim nKunci As Integer
Dim sKata As String
Dim sPlain As String = ""
Dim nEnc As Integer
j = 0
sKata = plainteks.Text
jum = Len(sKata)
skey = kunci.Text
For i = 1 To jum
If j = Len(skey) Then
j = 1
Else
j = j + 1
End If
nKata = Asc(Mid(sKata, i, 1)) - 65
nKunci = Asc(Mid(skey, j, 1)) - 65
nEnc = ((nKata + nKunci) Mod 26)
sPlain = sPlain & Chr((nEnc) + 65)
Next i
chiperteks.Text = sPlain
End Sub
Private Sub plain_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles plainteks.KeyPress
e.KeyChar = UCase(e.KeyChar)
Dim tombol As Integer = Asc(e.KeyChar)
If Not (((tombol >= 65) And (tombol <= 90)) Or (tombol = 8)) Then
e.Handled = True
End If
End Sub
Private Sub key_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles kunci.KeyPress
e.KeyChar = UCase(e.KeyChar)
Dim tombol As Integer = Asc(e.KeyChar)
If Not (((tombol >= 65) And (tombol <= 90)) Or (tombol = 8)) Then
e.Handled = True
End If
End Sub
End Class
Hasil Program :
3. KRIPTOGRAFI GRONSFELD
Design form :
Public Class Form4
Private Sub Form4_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
plainteks.Text = ""
kunci.Text = ""
chiperteks.Text = ""
End Sub
Private Sub enkripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles enkripsi.Click
Dim j As Integer
Dim jum As Integer
Dim sKey As String
Dim nKata As Integer
Dim nKunci As Integer
Dim sKata As String
Dim sPlain As String = ""
Dim nEnc As Integer
j = 0
sKata = plainteks.Text
jum = Len(sKata)
sKey = kunci.Text
For i = 1 To jum
If j = Len(sKey) Then
j = 1
Else
j = j + 1
End If
nKata = Asc(Mid(sKata, i, 1)) - 65
nKunci = Asc(Mid(sKey, j, 1)) - 48
nEnc = ((nKata + nKunci) Mod 26)
sPlain = sPlain & Chr((nEnc) + 65)
Next i
chiperteks.Text = sPlain
End Sub
Private Sub plainteks_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles plainteks.KeyPress
If ((e.KeyChar >= "0" And e.KeyChar <= "9") And e.KeyChar <> vbBack) Then e.Handled = True
End Sub
Private Sub kunci_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles kunci.KeyPress
If Not ((e.KeyChar >= "0" And e.KeyChar <= "9") Or e.KeyChar = vbBack) Then e.Handled = True
End Sub
End Class
Hasil Program :
4. KRIPTOGRAFI VIGENERE
design form :
listing program :
Public Class Form5
Private Sub Form5_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
plainteks.Text = ""
kunci.Text = ""
chiperteks.Text = ""
End Sub
Private Sub enkripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles enkripsi.Click
Dim j As Integer
Dim jum As Integer
Dim sKey As String
Dim nKata As Integer
Dim nKunci As Integer
Dim sKata As String
Dim sPlain As String = ""
Dim nEnc As Integer
j = 0
sKata = plainteks.Text
jum = Len(sKata)
sKey = kunci.Text
For i = 1 To jum
If j = Len(sKey) Then
j = 1
Else
j = j + 1
End If
nKata = Asc(Mid(sKata, i, 1)) + 0
nKunci = Asc(Mid(sKey, j, 1)) + 0
nEnc = ((nKata + nKunci) Mod 256)
sPlain = sPlain & Chr((nEnc))
Next
chiperteks.Text = sPlain
End Sub
End Class
Hasil Program :
