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Posted by frizzle on 02/07/06 11:26
Thanks, indeed that's what i meant.
Apparently it's a weaker system then i imagined.
I guess i'll have to find another alternative again ... :(
Greetings Frizzle.
Jim Michaels wrote:
> "frizzle" <phpfrizzle@gmail.com> wrote in message
> news:1138227180.394441.177630@z14g2000cwz.googlegroups.com...
> > Carl Vondrick wrote:
> >> You may want to look into Mcrypt
> >> (http://us3.php.net/manual/en/ref.mcrypt.php). But, with Peter said,
> >> what are you really try to achieve?
> >
> > What i'm trying to do is build a way of security that a human is
> > submitting a form.
> > I know there are ways out there already, but i also have other purposes
> > in mind.
> >
> > Example:
> >
> > Image random generated according to key 1:
> >
> > image.php?txt=kjGKUGFfas8gkjafKfasdf
> >
> > The image is a php file, getting $_GET['txt'], decrypt it according
> > key 1, and encrypt it according to key 2. The second encrypting
> > becomes visible in the actual image.
> >
> > I have a have a hidden form field with the value of key 1, and the
> > visitor has to insert the text from the image / key 2 into a form
> > field.
> >
> > Then after posting i compare the decrypted hidden formfield's value
> > against the user submitted value ( / image's value). if they match,
> > the user read the image, and is human ...
>
> Not sure, but sounds like a CAPTCHA. They can be OCR'd
> (http://www.ocr-research.org.ua/ ) from what I found in an earlier post.
>
> >
> > It might sound stupid, sloppy or whatever, but i'm just trying to
> > achieve my goal.
> >
> > Thanks.
> >
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