Kriptografi Caesar

 

Listing Program

Public Class Form1

    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(Plain.Text)
            x = Mid(Plain.Text, i, i)
            x = Chr(Asc(x) + 3)
            xkalimat = xkalimat + x
        Next
        Chiper.Text = xkalimat
    End Sub

    Private Sub Btndeskripsi_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btndeskripsi.Click
        Dim x As String = ""
        Dim xkalimat As String = ""
        For i = 1 To Len(Chiper.Text)
            x = Mid(Chiper.Text, i, i)
            x = Chr(Asc(x) - 3)
            xkalimat = xkalimat + x
        Next
        Plain.Text = xkalimat
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub
End Class

Selamat mencoba ya teman-teman..,,

semoga berhasil :)