Jump to content
Sign in to follow this  
Andreik

A simple cipher example

Recommended Posts

Andreik

I write a simple cipher example. I hope you like it.

Func XOR($STRING,$NUM=5)
    Local $INDEX,$RESULT=""
    For $INDEX = 1 To StringLen($STRING)
        $RESULT &= Chr(BitXOR(Asc(StringMid($STRING,$INDEX,1)),$NUM))
    Next
    Return $RESULT
EndFunc

Func Cipher($DATA,$PASSWORD,$OPT=0)
    Local $INDEX,$RESULT="",$L1,$L2,$CARRY,$PWD
    $L1 = StringLen($DATA)
    $L2 = StringLen($PASSWORD)
    If $L1 < $L2 Then SetError(1,0,0)
    $CARRY = Mod($L1,$L2)
    For $INDEX = 1 To Int($L1/$L2)
        $PWD &= $PASSWORD
    Next
    $PWD &= StringLeft($PASSWORD,$CARRY)
    For $INDEX = 1 To $L1
        If $OPT = 0 Then
            $RESULT &= Chr(Asc(StringMid($DATA,$INDEX,1))+Asc(StringMid($PWD,$INDEX,1)))
        ElseIf $OPT = 1 Then
            $RESULT &= Chr(Asc(StringMid($DATA,$INDEX,1))-Asc(StringMid($PWD,$INDEX,1)))
        EndIf
    Next
    Return $RESULT
EndFunc

$GUI = GUICreate("Encrypt/Decrypt",400,235,-1,-1,0x16C80000)
$EDIT1 = GUICtrlCreateEdit("This is a test",5,5,190,195,BitOR(0x00200000,0x00100000))
$EDIT2 = GUICtrlCreateEdit("",205,5,190,195,BitOR(0x00200000,0x00100000))
$BUTTON1 = GUICtrlCreateButton("->",170,210,20,20)
$BUTTON2 = GUICtrlCreateButton("<-",210,210,20,20)
$ENC = GUICtrlCreateButton("ENCRYPT",10,210,90,20)
$DEC = GUICtrlCreateButton("DECRYPT",300,210,90,20)
GUISetState(@SW_SHOW,$GUI)

While 1
    $MSG = GUIGetMsg()
    Switch $MSG
        Case $BUTTON1
            GUICtrlSetData($EDIT2,GUICtrlRead($EDIT1))
            GUICtrlSetData($EDIT1,"")
        Case $BUTTON2
            GUICtrlSetData($EDIT1,GUICtrlRead($EDIT2))
            GUICtrlSetData($EDIT2,"")
        Case $ENC
            GUICtrlSetData($EDIT2,XOR(Cipher(GUICtrlRead($EDIT1),"TEST",0),5))
        Case $DEC
            GUICtrlSetData($EDIT2,Cipher(XOR(GUICtrlRead($EDIT1),5),"TEST",1))
        Case -3
            Exit
    EndSwitch
    Sleep(20)
WEnd

When the words fail... music speaks

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.