ROT 256 - encryption, decryption

[Nuffilein805]

i was bored so i made a ROT-256 encryption/decryption

don't know if anyone already made 1

THIS 1 IS NOT SAFE!

if you want to use it, do it on your own risk!

anyway, here's the code

;rot-256
$a = InputBox ("Test", "Text eingeben")
$b = rot_256 ($a)
msgbox (0, $a, $b)

func rot_256($string)
    $letter = StringSplit ($string, "")
    $max = $letter[0] + 1
    dim $output[$max]
    dim $convert[$max]
    dim $rot_256 = ""
    for $i = 1 to $letter[0] step 1
        $convert[$i] = Asc($letter[$i])
        if $convert[$i] > -1 and $convert[$i] < 128 Then
            $convert[$i] = $convert[$i] + 128
            $output[$i] = Chr($convert[$i])
        ElseIf $convert[$i] > 127 and $convert[$i] < 256 Then
            $convert[$i] = $convert[$i] - 128
            $output[$i] = Chr($convert[$i])
        EndIf
        $rot_256 = $rot_256 & $output[$i]
    Next
    
    return $rot_256
            
EndFunc

added a little testthingy

rot_256.au3

Edited October 25, 2005 by Nuffilein805

[Nuffilein805]

oooops actually its rot 128

just had some problems thinking about the name

thought well 256 chars gotta be 256, but its 128

sry bout that

[busysignal]

oooops actually its rot 128

just had some problems thinking about the name

thought well 256 chars gotta be 256, but its 128

sry bout that

So are you going to make a *safe* version??

Cheers..

[Nuffilein805]

rot-"whatever" can't be safe it can just make it harder for some1 to read a text if you know how its "encrypted" then you only need about 2sec to find out what is encrypted

[markusss]

Was bored too so i wrote a decrypt script and modified the encript one, now it writes the output to a file (the decrypt one does that too)^^

The files are here: http://www.autoitscript.com/fileman/users/tdlrali/Some_random_stuff/

Definately not safe, all I had to do to decrypt is change two (2^^) signs:

+ -> - / - -> +

Still kind of fun since it looks cool!

Felix N.

[Nuffilein805]

no this is most likely the unsafest method to encrypt, but it is fun trying to write a script around this old method