Re: CAPTCHA image validation in web form

["Guillermo Andrades, CPI Software" <gab@xxxxxxx>]

Hi Ralph,

<<Do you have WDSc RSE with the IFS directory listed? Deploying via
WDSc to the IFS is very straightforward if you are using it.>>

I use wdsc 7 but basically for editing RPGIV batch programas (for using with
html).

btw, I've found info about an 3rd party captcha generator that is command
line:

http://www.retrologic.com/capture-main.html
Since it runs on the command line, RetroCapture can be used to generate
CAPTCHA security images for web-applications written in any development
language, not just in Java."

the demo images are really complex for me, I think the normal users can get
errors in typing from these complex images (I like more the idea of
selecting one from several images doing a click):
http://www.retrologic.com/capture-gallery.html

Thanks very much for your interest,
Guillermo.



On Wed, Sep 3, 2008 at 9:54 AM, Ralph Daugherty <rdjfc@xxxxxxxxxxxxx> wrote:

>    well, this has been eye opening. After seeing what all was involved
> with Java to create CAPTCHA's, I took a look at PHP because I knew my
> phpBB forum software wasn't that complicated. On the otehr hand, neither
> is the CAPTCHA.
>
>    To generate good CAPTCHA's is mostly done with the GD PHP graphics
> library. But then that's getting up there in complexity with the Java
> graphics library, so no shortcuts there.
>
>    The Java package that looked most promising is
> org.apache.myfaces.custom.captcha.util. I pulled that code into a
> project. I need to go get some more supporting classes, but they're all
> Apache. There is one use of HTTPServletResponse (or something close to
> that), but I commented out that import and will replace whatever is
> being done there with something else appropriate.
>
>    The Java code out there is understandably servlet oriented, so what
> we want is a jar that ends up with a CAPTCHA PNG (or JPG or GIF) file as
> output without any other interactions.
>
>    Will be interesting code to get working and post in any event.
>
>  rd