METODE VIGENERE PADA KRIPTOGRAFY


Hasil

Hasil

Adapun langkah-langkah untuk membuat program kriptografy dengan metode Vigenere adalah sebagai berikut
1. Desain form seperti gambar dibawah ini
1
2. Setelah selesai desain formnya ketikkan coding dibawah ini

Public Class Form1

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
End Class

Anda juga dapat melihat rumahnya http://mesran.net
semoga bermanfaat buat kita semua 😀

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s