Form Menu
Public Class Menu
Private Sub ClloseToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ClloseToolStripMenuItem.Click
End
End Sub
Private Sub KriptografiCaesarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiCaesarToolStripMenuItem.Click
Kriptografi_Caesar.Show()
End Sub
Private Sub KriptografiVernamToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiVernamToolStripMenuItem.Click
Kriptografi_Vernam_Chiper.Show()
End Sub
Private Sub KriptografiGronsfeldToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiGronsfeldToolStripMenuItem.Click
Kriptografi_Gronsfeld.Show()
End Sub
Private Sub KriptografiViginereToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiViginereToolStripMenuItem.Click
Kriptografi_Viginere.Show()
End Sub
End Class
Form Kriptografi Caesar
Public Class Kriptografi_Caesar
Private Sub btnenkripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnenkripsi.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 btndekripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btndekripsi.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 Kriptografi_Caesar_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
End Class
Form Kriptografi Vernam
Public Class Kriptografi_Vernam_Chiper
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 btnenkripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnenkripsi.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 plainteks_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 plainteks_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles plainteks.TextChanged
End Sub
Private Sub kunci_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
Private Sub kunci_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles kunci.TextChanged
End Sub
End Class
Form Kriptografi Gronsfeld
Public Class Kriptografi_Gronsfeld
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 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
Private Sub Btnenkripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btnenkripsi.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
End Class
Form Kriptografi Viginere
Public Class Kriptografi_Viginere
Private Sub btnProses_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnProses.Click
Chipertext.Text = Enkripsi(Plaintext.Text, Kunci.Text)
End Sub
Function Enkripsi(ByVal Teks As String, ByVal Kunci As String) As String
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
jum = Len(Teks)
sPlain = ""
sKey = Kunci
sKata = Teks
For i = 1 To jum
If j = Len(sKey) Then
j = 1
Else
j = j + 1
End If
nKata = Asc(Mid(sKata, i, 1))
nKunci = Asc(Mid(sKey, j, 1))
nEnc = ((nKata + nKunci) Mod 256)
sPlain = sPlain & Chr((nEnc))
Next i
Enkripsi = sPlain
End Function
Private Sub Kriptografi_Viginere_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
End Class
Hasil Program
