Project VB - Link Program Kriptografi

Berikut ini merupakan contoh project VB untuk me-Link kan beberapa program Kriptografi ;

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 :

listing program :

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 :

listing program :

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 :

Demikian disampaikan, terimakasih... :)