Nie dia program Vb.net mengenai kriptografi, yang didalamnya terdiri dari 4 jenis yaitu ;
1. Kriptografi Caesar
1. Kriptografi Caesar
2. Kriptografi Vernam
3. Kriptografi Gronsfeld
4. kriptografi Vegenere
oke,,, selanjutnya
kita masuk ke perogramnya. Pertama kita Buat Formnya sebanyak 5 form.
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Next
Masuk ke form 1, kta buat gambarnya seperti dibawah ini
Selanjutnya, kita isi datanya
Public Class Form1
Private Sub Btnenkripsi_Click(ByVal sender As System.Object, ByVal eAs System.EventArgs) Handles Btnenkripsi.Click
Dim x As String = ""
Dim xkalimat As String = ""
For i = 1 To Len(plain.text)
x = Mid(Plain.Text, i, i)
x = Chr(Asc(x) + 3)
xkalimat = xkalimat + x
Next
Chiper.Text = xkalimat
End Sub
Private Sub Btndekrifsi_Click(ByVal sender As System.Object, ByVal eAs System.EventArgs) Handles Btndekrifsi.Click
Dim x As String = ""
Dim xkalimat As String = ""
For i = 1 To Len(Plain.Text)
x = Mid(Plain.Text, i, i)
x = Chr(Asc(x) - 3)
xkalimat = xkalimat + x
Next
Chiper.Text = xkalimat
End Sub
End Class
Public Class Form2
Private Sub KriptografiCaesarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiCaesarToolStripMenuItem.Click
Form1.MdiParent = Me
Form1.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 KriptografiGransfildToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KriptografiGransfildToolStripMenuItem.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 KeluarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KeluarToolStripMenuItem.Click
Close()
End Sub
End Class
Public Class Form3
Private Sub OneTimePad_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 nEnec 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
nEnec = ((nKata + nKunci) Mod 26)
sPlain = sPlain & Chr((nEnec) + 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 Kunci_KeyPress1(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 btndekripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btndekripsi.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 nEnec 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
nEnec = ((nKata - nKunci) Mod 26)
sPlain = sPlain & Chr((nEnec) + 65)
Next i
Chiperteks.Text = sPlain
End Sub
Private Sub Kunci_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Kunci.TextChanged
End Sub
End Class
Public Class Form4
Private Sub Form4_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Plainteks.Text = ""
Chiperteks.Text = ""
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 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 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 Btndekripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btndekripsi.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
End Class
Public Class Form5
Private Sub Form5_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Plainteks.Text = ""
Chiperteks.Text = ""
Kunci.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)) + 0
nKunci = Asc(Mid(sKey, J, 1)) + 0
nEnc = ((nKata + nKunci) Mod 256)
sPlain = sPlain & Chr((nEnc))
Next i
Chiperteks.Text = sPlain
End Sub
Private Sub Btndekripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btndekripsi.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 i
Chiperteks.Text = sPlain
End Sub
End Class
