Dim str As String
Dim str2 As String
'Dim str3() As Byte
 
 
str = ROTXEncrypt("Work", "pass")
MsgBox (str)
MsgBox (ROTXDecrypt(str, "pass"))
 
 

Private Sub Form_Load()
Dim str As String
Dim str2 As String
 
 
str = ROTXEncrypt("-978ç___#{~#{~#'é(-è", "pass")
MsgBox (str)
MsgBox (ROTXDecrypt(str, "pass"))
End Sub
 
Public Function AltStrConv(Temp As Variant, Conversion As VbStrConv) As Variant
Dim i As Long, lLen As Long, bvHack(0) As Byte, lHackDelta As Long
Dim bArr() As Byte, sString As String
 
lHackDelta = VarPtr(bvHack(0))
 
If Conversion = vbFromUnicode Then
    sString = Temp
    lLen = Len(sString)
    ReDim bArr(0 To lLen - 1)
    For i = 0 To lLen - 1
        bvHack(VarPtr(bArr(0)) - lHackDelta + i) = bvHack(StrPtr(sString) - lHackDelta + (i * 2))
    Next i
    AltStrConv = bArr
ElseIf Conversion = vbUnicode Then
    bArr = Temp
    lLen = UBound(Temp) + 1
    sString = Space$(lLen)
    For i = 0 To lLen - 1
        bvHack(StrPtr(sString) - lHackDelta + (i * 2)) = bvHack(VarPtr(bArr(0)) - lHackDelta + i)
    Next i
    AltStrConv = sString
End If
 
End Function
 
Function ROTXDecrypt(ByVal strData As String, ByVal strKey As String)
    On Error Resume Next
    Dim bData() As Byte, bKey() As Byte
    bData = AltStrConv(strData, vbFromUnicode)
    bKey = AltStrConv(strKey, vbFromUnicode)
    For i = 0 To UBound(bData)
        If i <= UBound(bKey) Then
            bData(i) = bData(i) - bKey(i)
        Else
            bData(i) = bData(i) - bKey(i Mod UBound(bKey))
        End If
    Next i
    ROTXDecrypt = AltStrConv(bData, vbUnicode)
End Function
 
Function ROTXEncrypt(ByVal strData As String, ByVal strKey As String)
    On Error Resume Next
    Dim bData() As Byte
    Dim bKey() As Byte
    bData = StrConv(strData, vbFromUnicode)
    bKey = StrConv(strKey, vbFromUnicode)
    For i = 0 To UBound(bData)
        If i <= UBound(bKey) Then
            bData(i) = bData(i) + bKey(i)
        Else
            bData(i) = bData(i) + bKey(i Mod UBound(bKey))
        End If
    Next i
    ROTXEncrypt = StrConv(bData, vbUnicode)
End Function