TipsTrikSmall

buat 3 textbox dan 2 comand button
buat module



list form

Option Explicit

Private Sub Command1_Click()
Text2 = EncryptText(Text1, "gila")
End Sub

Private Sub Command2_Click()
Text3 = DecryptText(Text2, "gila")
End Sub

Private Sub Command3_Click()
Unload Me

End Sub

list module

Option Explicit

#Const CASE_SENSITIVE_PASSWORD = False

'Encrypt text
Public Function EncryptText(strText As String, ByVal strPwd As String) As String
Dim i As Integer, c As Integer
Dim strBuff As String

#If Not CASE_SENSITIVE_PASSWORD Then

'Convert password to upper case
'if not case-sensitive
strPwd = UCase$(strPwd)

#End If

'Encrypt string
If Len(strPwd) Then
For i = 1 To Len(strText)
c = Asc(Mid$(strText, i, 1))
c = c + Asc(Mid$(strPwd, (i Mod Len(strPwd)) + 1, 1))
strBuff = strBuff & Chr$(c And &HFF)
Next i
Else
strBuff = strText
End If
EncryptText = strBuff
End Function

Public Function DecryptText(strText As String, ByVal strPwd As String)
Dim i As Integer, c As Integer
Dim strBuff As String

#If Not CASE_SENSITIVE_PASSWORD Then

'Convert password to upper case
'if not case-sensitive
strPwd = UCase$(strPwd)

#End If

'Decrypt string
If Len(strPwd) Then
For i = 1 To Len(strText)
c = Asc(Mid$(strText, i, 1))
c = c - Asc(Mid$(strPwd, (i Mod Len(strPwd)) + 1, 1))
strBuff = strBuff & Chr$(c And &HFF)
Next i
Else
strBuff = strText
End If
DecryptText = strBuff
End Function